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austriamicrosystems
Multi-Standard CMOS Telephone IC for Basic Telephones
AS2533-36
DATA SHEET
General Description
The AS253x is a CMOS integrated circuit that contains all the functions needed to build a high performance electronic telephone set with basic features. The AS253x incorporates a line interface, a speech circuit, a dialler and ringer. It is a real single-chip / single-die IC with 28 pins. It allows either package mounting or chip-onboard mounting. The device is available in 4 versions (pin-compatible) with different features ranging from LNR only (last number redial) to 4 direct (one-touch) memories and 10 indirect (two-touch) memories. The sliding cursor procedure makes the LNR function easy to use under various PABX systems. The versatility of the circuit is provided by pin options and a few external components. This allows fast time-to-market and easy adaptation to different PTT requirements. A unique EMI performance has been achieved due to the consequent use of CMOS amplifiers.
-
Rx and Tx soft clipping to avoid harsh distortion Real or complex impedance (EU compliant) Stabilized supply for dialler and peripherals Automatic line loss compensation Operating range from 13 to 100 mA (down to 5 mA with reduced performance) Unique EMI performance (EU compliant)
Dialler
-
LD/MF dialing and mixed-mode dialing 31 digit last number redial (LNR) 4 direct/10 indirect (AS2533/36), 12 direct (AS2535) Repeat dialing by busy or engaged (not AS2535) Confidence tone during memory programming and mute Notepad memory function Pause key for access pause or wait function 3 flash timings, 100 ms, 280 ms and 375/600 ms Sliding cursor protocol with comparison
Ringer
-
Key Features
Line Interface and Speech Circuit
-
Electronic Rx volume control Electronic microphone mute Microphone amplifier with symmetrical input
Ring frequency discrimination 3-tone melody generator Ring melody selection via keyboard Ring volume selection via keyboard Version available with fixed ring melody and ring volume
Package
-
SOIC 28 or DIE
Block Diagram
Figure 1 Block Diagram
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Data Sheet AS2533-36
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Pin Description
Pin # 4 5 Symbol VDD AGND Positive Voltage Supply This is the supply pin for the circuit. Function
Analog Ground
This is the analogue ground for the amplifiers.
6
STB
Side Tone Balance Input
This is the input for side tone cancellation.
7
CI
Complex Impedance Pin
For complex impedance a capacitor should be connected to
8
MO
Melody Output
PDM output of the melody generator for tone ringing with internal open-drain transistor. Hi-Z when not active.
9
LLC
Line Loss Compensation
Select pin for line loss compensation (see also Figure 6 and Figure 7). LLC = AGND : 20 - 50 mA LLC = VDD : 45 - 75 mA LLC = VSS : none.
10
HS/DP
Hook Switch Input and Dial Pulse Output
This is an I/O that is pulled high by the hook switch when off-hook and an open drain pulls it low during break periods of pulse dialing and flash.
11
OSC
OSCillator Input
Pin for ceramic resonator (3.58 MHz). Reference: Murata CSTCC3M58GD3346-R0 Murata CSTLS3M58GD3458-B0 SMD Lead
12
MODE
Signaling
MODE Select Input
Function Dialing inhibited LD mode, 10 pps, 33/66 ms LD mode, 10 pps, 40/60 ms LD mode, 20 pps, 33/66 ms LD mode, 20 pps, 40/60 ms LD mode, 10 pps, 33/66 ms, Temp. MF with tone on first * key entry MF only, 82/82 ms MF only, 82/160 ms
Mode pin Open Row 1 Row 2 Row 3 Row 4 Row 5 Row 61 Row 7
During temporary MF: 82/160 ms 13 14 15 16 C4 C3 C2 C1 Keyboard Columns (see key arrangements in Figure 2, Figure 3 and Figure 4)
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Data Sheet AS2533-36
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Pin # 17 18 19 20 21
Symbol R4 R3 R2 R1 FCI
Function Keyboard Rows (see key arrangements in Figure 2, Figure 3 and Figure 4)
Frequency Comparator Input
This is a Schmitt trigger input for ring frequency discrimination. Disabled during off-hook.
22
LED
LED Output Driver
Output for driving an LED that will be flashing when in Program/Mute state. Microphone Inputs Differential inputs for the microphone (electret).
23 24 25
M1 M2 CS
Current Shunt Control Output
This N-channel open drain output controls the external high power shunt transistor for the modulation of the line voltage and for shorting the line during make period of pulse dialing.
26 27
VSS LI
Negative Power Supply
Line Input
This input is used for power extraction and line current sensing.
28
RI
Receive Input
This is the input for the receive signal.
1
LS
Line Current Sense Input
This is the input for sensing the line current.
2
MFL
MF Level Setting
A voltage divider connected from this pin to AGND and VSS can be used to set the DTMF level.
3
RO
Receive Output
This is the output for driving a dynamic earpiece with an impedance of 150 to 300 .
Selection Overview
Function
Direct memories (one-key) Indirect memories (two-key) Repeat dialing LNR key Pause insertion by LNR key Pause (PS) key P/M or MT key Tone/Pulse (T/P) key Temporary MF by * key Centrex (A - D) keys Volume (VOL, -/+) keys Volume reset by off-hook Programming of tone ringer
AS2533
4 10 yes yes yes yes P/M yes yes yes yes yes
AS2534/34R
AS2535
AS2536
0 12 4 0 0 10 yes no yes yes yes yes yes yes yes yes no yes P/M P/M P/M yes no yes yes yes yes yes no yes yes yes yes no yes no AS2534:yes yes yes yes AS2534R: no R3 Flash duration 600 ms 600 ms 600 ms 600 ms The corresponding product (AS2533-36) can be selected via bond-options (see chapter "Bond options" for details).
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Data Sheet AS2533-36
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Functional Description
Keyboard Connections
Key closure, RON max. = 1 k Key open, ROFF min. = 1 M
(Either VOL or +/- keys)
C1 R1 R2 R3 R4 P // M PM 4 4 8 8 # # LNR LNR A A RP RP M2 M2
C2 1 1 5 5 9 9 R1 R1 VOL VOL B B PS PS M3 M3
C3 2 2 6 6 0 0 R2 R2 + + C C T // P TP M4 M4
C4 3 3 7 7
* *
R3 R3
- -
D D M1 M1 MR MR
Figure 2 Keyboard Connection AS2533/36
C1 R1 R2 R3 R4 P // M PM 4 4 8 8 # # LNR LNR A A RP RP
C2 1 1 5 5 9 9 R1 R1 VOL VOL B B PS PS
C3 2 2 6 6 0 0 R2 R2 + + C C T // P TP
C4 3 3 7 7
* *
R3 R3
- -
D D
Figure 3 Keyboard Connection AS2534
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Data Sheet AS2533-36
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(either VOL or +/- keys)
Keyboard Connections continued
C1 R1 R2 R3 R4 P // M PM 4 4 8 8 # # LNR LNR M1 M1 M5 M5 M9 M9
C2 1 1 5 5 9 9 R1 R1 VOL VOL M2 M2 M6 M6 M 10 M 10
C3 2 2 6 6 0 0 R2 R2 + + M3 M3 M7 M7 M 11 M 11
C4 3 3 7 7
* *
R3 R3
- -
M4 M4 M8 M8 M 12 M 12
Figure 4 Keyboard Connection AS2535
Power On Reset
The on chip power on reset circuit monitors the supply voltage (VDD ) during off-hook. When VDD rises above approx. 1.2V, a power on reset occurs which clears the RAM.
During pulse dialing the speech circuit and other part of the device not operating is in a power down mode to save current. The CS pin is pulled to VSS in order to turn the external shunt transistor on to keep a low voltage drop at the LS pin during make periods.
DC Conditions
The normal operating range is from 13 mA to 100 mA. Operating range with reduced performance is from 5 mA to 13 mA (parallel operation). In the operating range all functions are operational. At line currents below 13 mA the AS253x provides an additional slope below 4.5V in order to allow parallel operation (see Figure 12). The dc characteristic (excluding diode bridge) is determined by the voltage at LI and the resistor R1 at line currents above 13 mA as follows: VLS = VLI + ILINE x R1 The voltage at LI is 4.5V in the normal operating range.
AC Impedance
The ac impedance of the circuit is set by external components. The impedance can be real or complex. The ac impedance is determined as follows: ZAC = 33 * Z1 The dc value of Z1 should be 30 to maintain correct dc performance. Return loss and side tone cancellation can be determined independent of each other.
Speech Circuit
The speech circuit consists of a transmit and a receive path with dual soft clipping, mute, line loss compensation and sidetone cancellation.
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Data Sheet AS2533-36
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Line Loss Compensation The line loss compensation is a pin option. When it is activated, the transmit and receive gains are decreased by 6 dB at line currents from 20 to 50 mA when LLC = AGND and 45 to 75 mA when LLC = high (@ R1 = 30 ). The line loss compensation is disabled when LLC = low (see Figure 6 and Figure 7).
Transmit The gain of the transmit path is 37 dB for 600 line termination from M1/M2 to LS (see test circuit Figure 9). The microphone input is differential with an input impedance of 20 k. The soft clip circuit limits the output voltage at LI to 2VPEAK (see Figure 11). The attack time is 30 s/6 dB and the decay time is 20 ms/6 dB. When mute is active, during dialing or after pressing the P/M key, the gain reduced by > 60 dB. Receive The gain of the receive path is 3 dB for 600 line termination (test circuit Figure 9). The receive input the differential signal of RI and STB. When mute is active during dialing the gain is reduced by > 60 dB. During DTMF dialing a MF comfort tone is applied to the receiver. The comfort tone is the DTMF signal with level that is -30 dB relative to the line signal. The receive gain can be changed by pressing the volume keys. The VOL key gives a +5.4 dB boost and has a toggle function, i.e. repressing the key resets the gain to default. As an alternative the +/- keys can be used. The + key increases the gain by 8.1 dB in 3 steps and the - key decreases the gain by 5.4 dB in 2 steps (total range 13.5 dB). On AS2533/35 the volume is reset to default by next off-hook and on AS2534/36 the volume setting will remain at last setting. A POR will always reset the volume to default. The soft clip circuit limits the voltage at the receive output (RO) to 1V PEAK (see Figure 10). It prevents harsh distortion and acoustic shock. Sidetone A good sidetone cancellation is achieved by using the following equation:
Dialing Functions
Valid Keys The key scanning is enabled when HS/DPN is pulled high and VDD is above VREF. A valid key is detected from the keyboard by connecting the appropriate row to the column (RON < 1 k). This can be done using an n x m keyboard matrix with single contacts. Four diodes are used to extend the number of rows (see keyboard arrangement fig. 2). It is also possible to connect a microcontroller to the rows and columns (see application note AN3010). P/M and MT Key The P/M key is used to enter the Program/Mute state. Depressing the P/M key mutes the speech circuit and the device is in program state. Repressing the P/M key deactivates the mute and program state (toggle function).The MT key works in similar way, but has no program function. When program/mute is activated, the LED indication is turned on (flashing: 80 ms 'on' and 1 sec 'off'). Dial Mode Selection The default mode (LD or MF) can be selected by the mode pin. When default LD mode is selected, a temporary change to MF can be invoked by pressing T/P key (not AS2535) or the * key (when mode pin = row 5, the MF tone is generated with the first * key entry). The circuit will revert to LD by repression the T/P key (not AS2535) or by pressing the R (R1, R2 or R3) key or by next on-hook. When MF mode is selected by the mode pin, the circuit can not be changed temporary to LD but will remain in MF mode. Centrex Keys (not AS2535) The alphanumeric keys accommodate easy use of centrex services. The A, B, C and D keys are only valid in MF mode (including temporary MF) and are not storable. Pressing one of these keys will invoke the appropriate MF tones to be transmitted. The centrex keys are not stored in the RAM, and subsequently entered digits are buffered in FIFO.
Z Line Z 2 = Z BAL Z1
The sidetone cancellation signal is applied to the STB input.
Z LI
Z1
Z BA
Z2
Figure 5 Side Tone Balance
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Data Sheet AS2533-36
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Memory Keys (not AS2534) The keys M1 to M12 are direct memory access keys and the MR key (AS2533/36 only) is used for abbreviated dialing. Memory arrangement Storable numbers Direct memory keys Indirect memories AS2533/36 AS2534 14 4 10 0 0 0 AS2535 12 12 0
Last Number Redial LNR is a facility that allows resignalling of the last manually dialed number without keying in all the digits again. The LNR is repeatable after each off-hook. The current content of the RAM is overwritten by new entries. A manually entered number is automatically stored in the LNR RAM. The capacity of the RAM is 31 digits. If a number greater than 31 digits is entered, the LNR facility will be inhibited (until new entries < 32 digits) and further entries will be buffered in FIFO. Pauses can be inserted by pressing the PS key (not AS2535). Post dialed digits, i.e. digits manually entered after LNR has been invoked, are not stored in RAM but buffered in FIFO. Repeat Dialing (not AS2535) The last manually dialed number can be repeated without going on-hook by pressing the RP key. If a called number is engaged, pressing the RP key will break the line for 1.6 second (to get a new dial tone) and after a pause the number will be repeated. The repeat function is enabled when prior to pressing the RP key, a number has been dialed, and it can be invoked an unlimited number of times until next on-hook. During the 1.6 second break the device is in power down mode to save current. Recall Function A recall (R1, R2 or R3 key) activation will invoke a flash (timed loop break), however, the R1 flash is never executed in LD mode. R2 and R3 will be executed independent of the mode. If recall is the first entry in a digit string, it will be stored in LNR RAM when digit(s) are entered after the recall. If the recall key is depressed after a digit string has been entered or dialed out, the recall will not be stored but buffered in the FIFO together with subsequently entered digit. If pressing the recall key is not followed by digit entries, the LNR RAM remains intact. After a recall a 270 ms pause will automatically be
In the on chip RAM, numbers can be stored. Each number can contain up to 21 digits (including pauses). During programming multiple pauses can be inserted by pressing the PS (not AS2535) or the LNR key. Each pause inserted within the first 5 entries will automatically be terminated after 2 seconds whereas pauses inserted after location 5 in a digit string will halt dialing and can be terminated manually by pressing the PS (not AS2535) or the LNR key. The halt function allows in-dialing to an extension on a PABX. Example (45678-123 is stored in M1, where - is a pause/wait and 123 the extension number): off-hook, wait for dial tone press M1 (45678 is dialed out) await dial tone from called PABX press PS or LNR (123 is dialed out) Memory dialing is cascadable. However, the content of one memory must be dialed out before a new can be invoked. Sliding Cursor Procedure To accommodate easy and uncomplicated redialing (LNR) behind a PABX, a sliding cursor protocol is implemented. If new entries match the previous RAM contents, pressing the LNR key will dial out the remaining digits. If there is an error in matching, the LNR will be inhibited until next on-hook, and the RAM will contain the new number. Example (LNR content 912345, where 9 is access code): off-hook, wait for PABX dial tone press 9 and wait for external dial tone press LNR (12345 will be dialed out). Tone Generator The tone generator incorporates the DTMF tones, 3 basic frequencies for the tone ringer and pacifier tones. DTMF The DTMF generator provides 8 frequencies, namely:
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Data Sheet AS2533-36
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Low group Digit 1-2-3-A Digit 4-5-6-B Digit 7-8-9-C Digit * -0-# -D High group Digit 1-4-7- * Digit 2-5-8-0 Digit 3-6-9-# Digit A-B-C-D
697 770 852 941
Hz Hz Hz Hz Hz Hz Hz Hz (not AS2535)
The procedure is ended by repressing the P/M key. The default setting is digit 6, i.e. after a power on reset the device will start up with repetition rate 4 and maximum volume. If digit 0 is programmed, the tone ringer will be turned off until next off-hook where it will turn back to the last setting before 0. The programmed settings are stored in the on chip RAM. Repetition rate means that a sequence of 6 frequencies is repeated 1, 4 or 10 times within 1 second. The sequence of the frequencies is controlled by the sequence register as follows: Sequence F1 F2 F3 F1 F2 F3 ... Pacifier Tone By MF dialing the DTMF tones are provided to the earpiece as comfort tone. During programming a key entry is acknowledged by a pacifier tone of 1477 Hz. The level of the pacifier tone is approximately 60 mV at the RO output. The duration is 40 ms after every key entry in program mode. When terminating the program mode with the P/M key an acknowledge tone of 140 ms is provided. An invalid key entry, however, will cause a termination of the program mode indicated by a rejection tone of 4 times 40 ms with 28 ms pauses between the tone bursts.
1209 1336 1477 1633
The MF output level can be set with an external voltage divider on pin MFL. Voltage at pin MFL (2) AGND 0.878 * AGND 0.791 * AGND 0.705 * AGND 0.620 * AGND 0.495 * AGND 0.372 * AGND 0.290 * AGND 0.210 * AGND 0.130 * AGND VSS (ZLINE = 600) *typical MFL values for AGND = 1.5V The preemphasis is 2.6 dB. The MF tones are according to CEPT recommendations. Tone Ringer (Melody/Volume) The three basic frequencies of the melodies are: F1 = 800 Hz, F2 = 1067 Hz, and F3 = 1333 Hz ( 5%). The repetition rate and the volume of the tone ringer melodies can be programmed by pressing P/M and # followed by a digit as follows: Digit 1 2 3 4 5 6 7 8 9 0 Repetition Rate 1 time (50 ms pause) 1 time (50 ms pause) 1 time (50 ms pause) 4 times 4 times 4 times (default, AS2534R) 10 times 10 times 10 times None Volume - 16 dB - 7 dB 0 dB (max.) - 16 dB - 7 dB 0 dB (max.) - 16 dB - 7 dB 0 dB (max.) Off typ. 1.50* V 1.317 V 1.187 V 1.058 V 0.930 V 0.743 V 0.558 V 0.435 V 0.315 V 0.195 V 0.000 V (VSS) DTMF Level
(Low Grp.)
-4.0 dBm -5.2 dBm -6.4 dBm -7.6 dBm -8.8 dBm -10.0 dBm -11.2 dBm -12.4 dBm -13.6 dBm -14.8 dBm -16.0 dBm
Ring Frequency Discrimination
The ring frequency discriminator assures that only signals with a frequency between 13Hz and 70 Hz are regarded as valid ring signals. The time for recognizing a valid ring signal is 1/f seconds, where 'f' is the ring frequency. When a valid ring signal is present for 73 ms continuously, the melody generator is activated and remains active as long as the ring signal is present. Once the melody generator has been started, the ring signal is continuously monitored and the melody generator is instantly turned on or off according to the momentary presence of a valid or invalid ring signal respectively (until next POR or off-hook).
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Data Sheet AS2533-36
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Typical Characteristics of Line Loss Compensation
(dB) 35 34 33 32 31 30 29
Tx Gain LLC = AGND LLC = VDD LLC = VSS
f = 800 Hz ZLINE = 600 VLS = -10 dBm 20 30 40 50 60 70 80
DC Line Current (mA)
Figure 6 Typical Tx Gain Characteristics Line Loss Compensation
(dB) +4 +3 +2 +1 0 -1 -2
Rx Gain LLC = AGND f = 800 Hz ZLINE = 600 VLS = -10 dBm VOL = 0 dB (neutral) 20 30 40 50 60 70 80 LLC = VDD LLC = VSS
DC Line Current (mA)
Figure 7 Typical Rx Gain Characteristics Line Loss Compensation
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Data Sheet AS2533-36
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Typical Application
Complex Impedance (270 W + 750 W // 150 nF) Only the components necessary for presenting the complete functions of the AS253x are included. The external components might change to comply with various national PTT regulations and to interface to different transducers. Since the AS253x is a component and not a complete system, it can not be approved as a stand alone part by the standard bodies. Hence, full conformance to any standards is depending on the application in which the AS253x is being used, and therefore, approvals by the standard bodies are the responsibility of the customer and austriamicrosystems AG will not have tested the product to meet specific standards. For further application information please refer to application note AN2201 .
Figure 8 Typical Application
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Data Sheet AS2533-36
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When Code 0 (tone ringer off) has been programmed, the device will automatically return to previous setting (different from 0) by next off-hook.
Programming Procedures
Procedure Principles
The procedures for utilizing the features of the AS253x are optimized out of consideration for the human factor in order to: meet the user's expectations be easy to learn and relearn not invoke any automatic functions which the user doesn't expect protect the user from committing critical errors, e.g. dialing wrong numbers, deleting stored numbers, etc. be consistent, simple and usable. The following chapters describe the operating procedures for the provided features. Pressing an invalid key or key combination during programming will cause the device to abort the program state. Pressing any key combination or sequence which is not described or defined may cause the device to enter a state or mode that does not comply with the expectation of the user. In such cases, any undesired state can be terminated at any time by going on-hook / offhook which will generate a functional reset.
Temporary MF
The procedure below assumes that the device is operated in puls mode. 1. 2. 3. 4. Go off-hook Press [*] or [T/P] to switch to DTMF mode Press [R] or [T/P] to switch back to PULS mode Got to 2. to switch again to DTMF mode
Mode pin is connected to row 1, 2, 3, 4, or 5. When mode pin = row 5, pressing the [*] key also transmits the tone by MF selected. The [T/P] key (not AS2535) can be used alternatively to the [*] key.
Automatic Dialing
The following procedure describes the dialing procedure and the internal sequences: 1. Go off-hook Enter the number by pressing digit, [M1]-[M12], [LNR] or [MR] + digit 3. 4. 5. 6. The number is internally buffed in the FIFO Tone- or Puls-Dialing starts Wait for connection Got to 2 for entering postdialed digits
Storing Numbers (not AS2534)
Up to 14 numbers, each with maximum 21 digits, can be stored into the internal RAM. 1. 2. 3. Press [P/M] to enter program mode Enter location (MR + digit 1 ; or M1 to M12) Enter number - entries (0-9, *, #, PS or LNR, R1, R2, R3) will b written directly into the selected memory location) 4. 5. Press [P/M] to store and exit or go on-hook to abort Go to 1 for storing further numbers
2.
Postdialed digits are not stored but buffed in the FIFO.
Programming Tone Ringer
Three different ringer melodies with three levels each can be programmed. AS2534R cannot be programmed. 1. 2. 3. 4.
1
Press [P/M] to enter program mode Press [#] for ringer programming mode Enter Code to select ringer melody and volume(see code table in section Tone Ringer (Melody/Volume) Press [P/M] to store and exit or go on-hook to abort
Digit includes 0 - 9
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Data Sheet AS2533-36
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Timing Diagrams
LD Dialing
MUTE
MASK
HS/DPN
t IDP
t PDP
tB
tM
tB
tM
t IDP
t PDP
tB
tM
LD Dialing with Access Pause
MUTE
MASK
HS/DPN
t IDP
t PDP
tB
tM
tB
tM
t AP
t IDP
t PDP
tB
tM
MF Dialing
MUTE
HS/DPN
LS
t TD
t ITP
t TD
t ITP
t AP
t TD
t ITP
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Data Sheet AS2533-36
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Flash
MUTE
MASK
HS/DPN
tM
t FD
tM
t PFP
tM
t FD
tM
Repeat Dialing (not AS2535)
Number engaged
New connection
RP key MUTE DIALLING
HS/DPN
Power Down
t RP
t AP
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Data Sheet AS2533-36
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Electrical Characteristics
Absolute maximum ratings
Positive Supply Voltage Input Current Input Voltage (LS) Input Voltage (LI, CS) Input Voltage (STB, RI) Input Voltage (MO) Digital Input Voltage Electrostatic Discharge (HBM 1.5k-100pF) Storage Temperature -0.3V < VDD < 7V 25mA -0.3V < VIN < 10V -0.3V < VIN < 8V -2V < VIN < VDD+0.3V -0.3V < VIN < +35V -0.3V < VIN < VDD+0.3V 1000V -65C to +125C
Recommended operating conditions
Supply Voltage * (Speech Mode) Oscillator Frequency (Resonator: Murata CSA 3.58M G312AM) Operating Temperature * This voltage is generated internally 3.8V < VDD < 5V 3.58 MHz -25C to +70C
DC Characteristics (ILINE = 15 mA unless otherwise specified) Symbol
IDD
Parameter
Operating Current
Conditions
Speech mode MF dialing LD dialing, VDD = 2.5V Ring mode, VDD = 2.5V
Min.
Typ.
3 4 200 300 0.05
Max.
5
Units
mA mA A A A
IDD0
Retention Current
Idle mode, VDD = 2 V, TAMB = 25C
B
V LI IOL IOL VIL
Line Voltage (default) Output Current, Sink CS, HS/DP, MO Output Current, Sink; LED Input Low Voltage
13 mA < ILINE < 100 mA VOL = 0.4V VOL = 0.4V HS/DPN; FCI TAMB = 25C
B
4.5 1.5 4 VSS 0.3 VDD
V mA mA V
VIH
Input High Voltage
HS/DPN; FCI TAMB = 25C
B
0.7 VDD
VDD
V
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Data Sheet AS2533-36
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AC Characteristics (I LINE = 15 mA; f = 800 Hz unless otherwise specified) Symbol
Tx ATX ATX/F THD VAGC ASCO tATTACK tDECAY ZIN AMUTE VNO VIN Max BJT VIN MAX VTX RL ZAC/TEMP Rx ARX AVOL AVOL ARX/F THD VAGC ASCO tATTACT tDECAY VNO VUFC ZIN VIN RI AST VIN ST ZIN
Parameter
Transmit Gain, Transmit Variation with Frequency Distortion Soft Clip Level Soft Clip Overdrive Attack Time Decay Time Input Impedance (M1/M2) Mute Attenuation Noise Output Voltage Input Voltage Range (M1/M2) Output Driver Input Voltage Range (LI) Dynamic Range Return Loss Temperature Variation Receive Receive Gain (Vol. default) Volume Gain Volume Gain Variation with Frequency Distortion Soft Clip Level Soft Clip Overdrive Attack Time Decay Time Noise Output Voltage Unwanted F. Components Input Impedance (RI) Input Voltage Range (RI) Sidetone Cancellation Input Voltage Range (STB) Input Impedance (STB)
Conditions
Test Circuit Figure 9 M1/M2 to LI f = 500 Hz to 3.4 kHz VLI < 0.25VRMS
Min
35.1
Typ
36.6 0.8
Max
38.1
Units
dB dB
2 2 20 30 20 20
% VPEAK dB s/6 dB ms/6dB k dB
Mute activated TAMB = 25C
B
60 -72 1 0.5 2 2 18 0.5
dBmp VPEAK VPEAK VPEAK VPEAK dB /C
Differential Single Ended
ZRL =1000; TAMB = 25C
B
Test Circuit Figure 9 LI to RO VOL key -/+ keys f = 500 Hz to 3.4 kHz VRI < 0.25VRMS VRO = VRI > 0.8VRMS 1 10 30 20 TAMB = 25C
B
1.5
3 +5.4 -5.4/+8.1 0.8
4.5
dB dBr dBr dB
2
% VPEAK dB s/6 dB ms/6dB
-72 -60 8 2
dBmp dBm k VPEAK dB
50 Hz....20 kHz
VRI < 0.25VRMS
26 2 80
VPEAK k
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Data Sheet AS2533-36
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AC Characteristics (contd) (ILINE = 15 mA; f = 800 Hz unless otherwise specified)
Symbol Parameter Keyboard tD Key Debounce Time HS/DPN Input tHS-L tHS-H Low to High Debounce High to Low Debounce Going off-hook Not LD dialing During LD dialing DTMF F VMF VMF VL-H VUFC Frequency deviation MF Tone Level (Low group) MF Tone Level (Low group) Preemphasis Low to High Unwanted F. Components Note 3; MFL = VSS TAMB = 25C, Note 5
B
Conditions
Min
Typ 15
Max
Units ms
15 210 270 1.2 - 2.5 -4 -16...-4 1.8 2.4 3.0 - 40 - 50 - 70 - 80 80 80 150 82.3 82.3 165 85 85 170 5 5 - 5.5
ms ms ms % dB dB dB dBm dBm dBm dBm ms ms ms ms ms
MFL = AGND, TAMB = 25C
B
MFL Range = VSS ... AGND, TAMB = 25C
B
TAMB = 25C,
B
300 Hz...5 kHz 5 kHz...14 kHz 14 kHz...28.5 kHz 28.5 kHz...40 kHz
tTD tITP tITP tTR tTF
Tone Duration Inter Tone Pause Inter Tone Pause Tone Rise Time Tone Fall Time LD
Note 1&6; Mode=row 6 or 7 Note1; Mode=row 6 Note 1 & 6; Mode=row 7 Note 2 Note 2
tDR
Dial Rate
Mode = row 1, 2 or 5 Mode = row 3 or 4
9.53 19.05 57 28.5 63 31.5 38 19 31.5 15.7
10 20 61.2 30.6 66 33 40.8 20.4 33 16.5 35
10.5 21 63 31.5 69 34.5 42 21 34.5 17.3
pps pps ms ms ms ms ms ms ms ms ms
t/B t/B t/B t/B tM/ tM/ tM/ tM/ tPDP tIDP tHS-H tMO
Break Period Break Period Break Period Break Period Make Period Make Period Make Period Make Period Pre-Digit Pause Inter Digit Pause High to Low Debounce Mute Overhang
Mode = row 2 Mode = row 4 Mode = row 1 or 5 Mode = row 3 Mode = row 2 Mode = row 4 Mode = row 1 or 5 Mode = row 3
Mode = row 1, 2, 3, 4 or 5 fosc = 3.58 MHz During LD dialing
780
790 270 tM
800
ms ms
Revision 8.8
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Data Sheet AS2533-36
austriamicrosystems
Symbol
tFD
Parameter
Flash Duration 1 Flash Duration 2 Flash Duration 3
Conditions
R1 key R2 key R3 key (AS2533/34/35/36) Note 8
Min
100 270 600
Typ
Max
102 300 650
Units
ms ms ms ms sec sec
tPFP tAP tRP VMO tMD F1 F2 F3 tDT tTO fMIN fMAX fPT VRT tRTD-E tRTD-A tRTD-R tLED-ON tLED-OFF VCT
Post Flash Pause Access Pause Repeat Break Time Tone Ringer Melody Output Melody Delay Frequency 1 Frequency 2 Frequency 3 Detection Time Detection Time-out Min. Detection Frequency Max. Detection Frequency Pacifier Tone Frequency Level (RO) Duration, Key Entry Duration, Acknowledge Duration, Reject LED Output "on-time" Interval Comfort Tone (DTMF) Level (RO) Relative to LS P/M state P/M state Program Mode Only P/M mode, key entry Key entry Valid key entry, prog. Terminate with P/M key Invalid key entry, note 7 Initial 2.0
274 2.05 1.6 PDM 10 800 1067 1333
1/f + 73ms
2.12
ms Hz Hz Hz s ms Hz Hz Hz mV ms ms ms ms sec dBr
note 4 13 70 1477 60 40 140 4x40 80 1 -30
Note 1: The values are valid during automatic dialing and are minimum values during manual dialing, i.e. the tones will continue as long as the key is depressed. Note 2: The rise time is the time from 10% of final value till the tone amplitude has reached 90 % of its final value. Note 3: Relative to high group. Note 4: The FCI circuit is reset by POR and HS/DPN pulled high (off-hook). After a reset the FCI circuit is in a standby state. A positive edge on FCI will start a 73 ms timer and the frequency discrimination is initiated. Whenever a period of the ring signal is missing, the timer is reset. When a valid ring signal is present for 73 ms, the melody generator is started and is directly controlled by the ring signal. This condition will remain until a new reset.
Note 5: This does not include the frequency deviation of the ceramic resonator. Note 6: During temporary MF mode. Note 7: An invalid key entry in program mode will invoke a tone sequence with 4 tone bursts of 40 ms and pauses between bursts of 28 ms and abort the program mode. Note 8: Pauses inserted within the first 5 entries of a digit string will be automatically terminated after 2 seconds. Pauses inserted after location 5 can only be terminated manually by pressing the PS or LNR key.
Revision 8.8
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Data Sheet AS2533-36
austriamicrosystems
Test Circuit
Figure 9 Test Circuit
Revision 8.8
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Data Sheet AS2533-36
austriamicrosystems
Characteristic Curves (Typical)
1,2 [Vp] Receive Output Voltage (RO) 1,0 soft clipping
VRO
12 11 [%] 10
Line Output Voltage (LS) 2,5 [Vp] soft clipping 2,0
VLS
10 [%] 9 8 7
Distortion
9 0,8 Line Current: 20mA Frequency: 800Hz Tamb: 25C Typically 8
Distortion
7 6 5
1,5
0,6
Line Current: 20mA Frequency: 800Hz Tamb: 25C Typically
6 5 4
0,4
THD
4 3
1,0
THD
3 2 1
0,2
2 1
0,5
0,0 0,00
0,25
0,50
0,75
1,00
1,25
1,50
1,75 [Vp]
0 2,00
0,0 0 25 50 75 100 125 Microphone Input Voltage (M1/M2)
0 150 [mVp]
Line Input Voltage (LS)
Figure 10 Receive Soft Clipping and Distortion
Figure 11 Transmit Soft Clipping and Distortion
8 7 6
DC Mask [V]
VLS
5 4 3 2 1 0 0 10 20 30 40 50
Line Current [mA]
VLI
Typically No AC signals Tamb: 25C
60
70
80
90
100
Figure 12 DC Mask
Revision 8.8
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Data Sheet AS2533-36
austriamicrosystems
Bond Pad Layout
Bond Options
Product Version AS2533 AS2534/34R AS2535 AS2536
(1)
Bond Pad BOND_AS2535 BOND_AS2536 BOND_AS2535 BOND_AS2536 BOND_AS2535 BOND_AS2536 BOND_AS2535 BOND_AS2536
Connection not bonded not bonded not bonded bonded to MODE bonded to MODE not bonded not bonded bonded to MODE
(1)
For deliveries as packaged devices (SOIC28), LNR only is tested, direct and indirect memories are not tested!
Revision 8.8
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Data Sheet AS2533-36
austriamicrosystems
Sizes and Coordinates
Die Size: Bond Pad Size: Bond Pad Co-ordinates: 3.190mm x 2.975mm 85m x 85m Reference co-ordinate of DIE = DIE center Reference co-ordinate of PAD = PAD center
X [m] -1413.50 -1413.50 -1413.50 -1413.50 -1392.50 -1392.50 -1392.50
y [m] 1052.25 796.25 586.25 226.25 -107.75 -399.35 -974.20
Pad Name VDD AGND STB CI MO LLC HS/DP
Pin No 4 5 6 7 8 9 10
x [m] 1392.50 1392.50 1392.50 1413.50 1413.50
y [m] -1053.80 -663.00 -319.80 408.75 683.75
Pad Name R1 FCI LED M1 M2
Pin No 20 21 22 23 24
Pads on the Left
Pads on the Right
Pads on the Top 1227.50 1079.50 1301.25 1301.25 1301.25 1301.25 1301.25 1301.25 1301.25 1301.25 CS VSS VSS LI RI LS MFL RO 25 26 26 27 28 1 2 3
Pads on the Bottom -1244.00 -862.10 -696.70 -432.50 -215.10 -49.70 214.50 379.90 677.30 842.70 1173.30 -1285.00 -1285.00 -1285.00 -1285.00 -1285.00 -1285.00 -1285.00 -1285.00 -1285.00 -1285.00 -1285.00 OSC BOND_AS2535 MODE BOND_AS2536 C4 C3 C2 C1 R4 R3 R2 13 14 15 16 17 18 19 12 11
969.50 627.50 54.50 -90.50 -449.50 -744.50
Revision 8.8
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Data Sheet AS2533-36
austriamicrosystems
Vertical Structure of Bond Pads
Process CXQ/CXB - FAB B Layer Specification metal 2 upper layer: metal 2 metal 1 metal 1 barrier polysilicon oxide Si substrate metal 1 barrier polysilicon oxide silicon substrate metal 1
960 nm AISiCu 98.5% Aluminium 1.0% Silicon 0.5 % Copper 40 nm Titanium lower layer: 450 nm AISiCu upper layer: 98.5 % Aluminium 1.0% Silicon 0.5 % Copper 40 nm Titanium lower layer: upper layer 80nm Titanium Nitride lower layer 30nm Titanium 270 nm polysilicon 460 nm thermal oxide
General Conditions Passivation Marking of Failure Dice Allowed Loss after Assembly
200 nm silicon oxynitride + 550 nm silicon nitride Ink Dots, water resistant, Diameter 0.4...1.2 mm < 5% in average < 10% for a single delivery lot Compensation is limited to replacement of the number of defectives exceeding the above allowances. Quantity of dice per delivery lot Only complete wafers can be delivered, therefore the number of good dice delivered may differ from the order quantity up to 1000 pcs. Storage Conditions Dice on wafer or dice on foil must be stored in originally sealed boxes or bags. For storage period - see below. Except for RMA, opened boxes or bags will not be accepted by austriamicrosystems for return
Conditions for Delivery as Wafer Wafer diameter 200 mm Wafer thickness 380 20m Back finishing Scribe lane width Packing Max. Storage time in sealed box back grinding, silicon 100 20m Wafer Box Ultrapack 200 / sealed in foil bags 6 month, Tamb = 25 C
Revision 8.8
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Data Sheet AS2533-36
austriamicrosystems
Conditions for Delivery as Dice on Foil, sawn Die thickness 380 20m Back finishing Frame Frame Position Tolerance back grinding, silicon Material: Plastic Size: see figure Center wafer to frame: 4mm Angle deviation wafer to frame: 8 Orientation wafer to frame: Wafer flat to frame side with kerfs Covering adhesive foil to frame: >5mm Type: PVC with acrylic adhesive Thickness: 70 20 m Sawing conditions Sawing mode: Saw - through mode Sawing width: typ. 60 m Kerf depth in foil: typ. 20 m XV -dimension deviation: max.25 m frame sealed in foil bags filled with nitrogen 2 months, Tamb = 25 C
Tape
Packing Storage time In sealed bags
Mechanical Drawing of Frame
Revision 8.8
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Data Sheet AS2533-36
austriamicrosystems
Pin Configuration
28 Pin SOIC (suffix T)
Packaging
The device is available in the packages outlined below (not to scale). For exact mechanical package dimensions please see austriamicrosystemsAG packaging information. 28-pin plastic SOIC (suffix T)
Max. Body Length Max. Body Width Pitch
18.1mm / 713mil 7.6mm / 300mil 1.27mm / 50mil
Ordering Information
Device
AS2533 T AS2533 F AS2533 W AS2534B T AS2534B F AS2534B W AS2534R T AS2534R F AS2534R W AS2535 T AS2535 F AS2535 W AS2536 T AS2536 F AS2536 W AS253x F AS253x W AS253xR F AS253xR W
Order Number
AS2533U-ZSO-U pls see bottom rows pls see bottom rows AS2534U-ZSO-U pls see bottom rows pls see bottom rows AS2534R-ZSO-U pls see bottom rows pls see bottom rows AS2535U-ZSO-U pls see bottom rows pls see bottom rows AS2535U-ZSO-U pls see bottom rows pls see bottom rows AS253xU-ZSW-F AS253xU-ZSW AS253xR-ZSW-F AS253xR-ZSW
Package
28 pin SOIC in tubes Dice on foil, sawn Dice on wafer 28 pin SOIC in tubes Dice on Foil, sawn Dice on Wafer 28 pin SOIC in tubes Dice on Foil, sawn Dice on Wafer 28 pin SOIC Dice on Foil, sawn Dice on Wafer 28 pin SOIC Dice on Foil, sawn Dice on Wafer Dice on Foil, sawn Dice on Wafer Dice on Foil, sawn Dice on Wafer
Features
LNR, 4 direct/10 indirect memories LNR, 4 direct/10 indirect memories LNR, 4 direct/10 indirect memories LNR only, no direct/indirect memories LNR only, no direct/indirect memories LNR only, no direct/indirect memories LNR only, no direct/indirect memories, ringer fixed LNR only, no direct/indirect memories, ringer fixed LNR only, no direct/indirect memories, ringer fixed LNR, 12 direct memories LNR, 12 direct LNR, 12 direct LNR, 4 direct/10 indirect memories LNR, 4 direct/10 indirect memories LNR, 4 direct/10 indirect memories All versions All versions
(1) (1) (1) (1) (2) (2)
All versions, ringer fixed All versions, ringer fixed
(1)
Please Note: For wafer delivery or dice-on-foil delivery, the versions can be selected by bond options. (2) For deliveries as packaged devices (SOIC28), LNR only is tested, direct and indirect memories are not tested!
Revision 8.8
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Data Sheet AS2533-36
austriamicrosystems
Contact Information
austriamicrosystems AG Business Unit Communications A 8141 Schloss Premstaetten, Austria-EU T. +43 (0) 3136 500 0 F. +43 (0) 3136 500 5692 http://www.austriamicrosystems.com
For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact
Copyright
Copyright (c) 1997-2006, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered (R). All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks of their respective companies.
Disclaimer
Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services.
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