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Semiconductor
SL5001P/2P
TONE RINGER
Description
The oscillator frequencies can be adjusted over a wide range by selection of external components
Features
* * * * * * Designed telephone bell replacement Adjustable 2-frequency tone Low current drain Built-in hysteresis prevents false triggering and rotary dial "Chirp" External triggering ringer disable(5001P) Adjustable for reduced supply initiation current(5002P)
Applications
* Telephone tone ringers * Alarms or other alerting devices * Extension tone ringer modules
Ordering Information
Type NO.
SL5001P SL5002P
Marking
SL5001 SL5002
Package Code
DIP8 DIP8
Outline Dimensions
unit : mm
KSI-W012-001
1
SL5001P/2P
Absolute Maximum Ratings
Characteristic
Supply Voltage Power Dissipation Operating Temperature Storage Temperature
(Ta = 25C)
Symbol
VCC PD Topr Tstg
Rating
30 400 -45+65 -65+150
Unit
V mW C C
Block Diagram
VCC
1
R E G ULA T O R W I T H HY S T E R E S I S
2
T r i g g e r -I n
O S C1 In pu t
3
LF O
HF O
A MP
8
O u tpu t
5
G ND
4 O S C1 Ou tpu t
7 O S C2 In pu t
6 O S C2 O u tpu t
LF O : Lo w F r e q u e n c y O S C. HF O : Hi g h F r e q u e n c y O S C. P i n 3,4 : Lo w F r e q u e n c y T i me Co n s t a n t P i n 6,7 : Hi g h F r e q u e n c y T i me Co n s t a n t * R e g u l a t o r c i r c u i t h a s b u i l t -i n h y s t e r e s i s t o p r e v e n t f a l s e t r i g g e r i n g a n d r o t a r y d i a l "Ch i r p s "
Electrical Characteristics
(Unless otherwise specified, Ta = 25C)
Characteristic
Operating Supply Voltage Initiation Supply Voltage Sustaining Voltage Initiation Supply Current Sustaining Current Trigger Voltage Trigger Current Disable Voltage Disable Current Output Voltage Oscillator Frequency Tolerance
Symbol
VCC VCC(INI) VSUS ICC(INI) ISUS VTR ITR VDIS IDIS VOUT fO
Test Condition
Trigger-In Open, No Load Trigger-In Open, No Load RSL = 6.8K(5002P) VCC=VSUS, No Load 5001P 5001P 5001P 5001P VCC=21V, No Load KSI-W012-001
Min.
17 9.7 0.8 0.7 10.5 10 -40 17 -
Typ.
19 11 2.5 1.2 11 20 0.4 -50 19 -
Max.
29 21 13 4.2 1000 0.8 21 7
Unit
V V V mA mA V A V A V % 2
SL5001P/2P
Electrical Characteristics (continued)
1.Initiation supply voltage VCC(INI) must be exceeded to trigger oscillation. 2.Sustaining voltage (VSUS) is the supply voltage required to maintain oscillation. 3.Trigger voltage (VTR) and trigger current(ITR) are the conditions applied to trigger in to start oscillation for VSUS VCC VCC(INI) . 4.Disable voltage (VDIS) and disable current(IDIS) are the conditions applied to trigger in to inhibit oscillation for VCC(INI) < VCC 5.Trigger current must be limited to this value externally. 6.Oscillator frequencies are given by equations : * fL = 1/(1.234RC) where R is the resistance connected between pins 3 and 4, and C is the capacitance connected between pin 3 and ground. * fH1 = 1/(1.515RC) where R is the resistance connected between pins 6 and 7, and C is capacitance connected between pin 6 and ground. Norminal rate (fHA) is the HFO when the output of LFO is high * fH2 = 1.25fH1, higher rate(fH2) is the HFO when the output of LFO is low.
Typical Performance Characteristics
Ic c - V c c No Lo a d 5001 10 (V r ms ) V c c =21V 8 6 V c c =15V 4 2 5001 0 10 20 30 40 V
L
- IL
3.5 Sup p l y Cur r ent I cc (mA) 3.0 2.5 2.0 1.5 1.0 0.5 2
6
10
14 18
22 26
30 34
S u p p l y V o l t a g e V c c (V ) (mA) Ic c - V c c 5002 A :R S L< 6.8K B:R S L= 6.8K C :R S L> 6.8K
Lo ad V o l tag e V
L
Lo a d C u r r e n t I L (mA r ms ) I c c (IN I) - R SL
Sup p l y C ur r ent I cc (mA)
3.5 3.0 2.5 2.0 1.5 1.0 0.5 2
(IN I)
4.0
4.0 3.5
Sup p l y I ni ti ati o n Cur r ent I cc
3.0 2.5 2.0 1.5 1.0 0.5 5002 2 4 6 8 10 12 14 16 R e s i s t a n c e R S L (K) 18
C B
A
6
10 14 18 22 26 30 34 S u p p l y V o l t a g e V c c (V )
KSI-W012-001
3
SL5001P/2P
Application Circuit And Information
1.Typical Tone Ringer
TIP 1u F 2K C5 RE 5001 RING D1 29V 5002 R2 4 165K 0.047u F 5 R5 15K 1300 : 8 C2 SP 1 2 3 8 7 6 R4 C3 510 191K 0.0068u F R3 0.22u F R6 10K
DBL5001
SL5002P
SL5001P
C4 10u F
RSL
The AC ringing voltage appears across the TIP and RING inputs of the circuit and is attenuated by capacitor(C1) and resistor (R1). C1 also provides isolation from DC voltages(48V) on the line. After full wave rectification by the bridge, the waveform is filtered by capacitor(C4) to provide a DC supply for Tone Ringer chip. As this voltage exceeds the initiation voltage VCC(INI) oscillation starts. With the components shown, the output frequency chops between fH1 and fH2 at a fL rate. The loudspeaker load is coupled through a 1300 to 8 transformer. To prevent DC power supply regulation problems due to high source impedance of the telephone line and coupling components C1 and R1, while the output impedance of the 5001P circuit is quite low, the load impedance must be kept fairly high. The output coupling capacitor (C5) is required with transformer coupled loads. The variable resistor (R6) is used to adjust the audio amplitude and resistor (R4) is a current limiting resistor. Resistor R5 is a quenching resistor used to limit back emf generated by the inductive load when ringing stops. When driving a piezo-ceramic transducer type load, the coupling capacitor (C5) is not required. However, a current limiting resistor is required as is a 29V zener diode in parallel with the transducer. This diode limits the voltage transients than can be generated by mechanical shocking of piezoceramic transducer. In the 5002P circuit, the initiation supply current ICC(INI) can be changed by using external resistor(RSL). The resistor (RSL) is connected to GND from pin2. As this initiation voltage remains constant independent of RSL, the supply initiation current fCC(INI) varies inversely with RSL. Thus, increasing the value of RSL will decrease the amount of AC ringing current required to trigger the device. RSL can also be used to compensated for smaller AC line
KSI-W012-001
4
SL5001P/2P
Application Circuit And Information (continued)
coupling capacitors which can be used to alter the ringer equivalence number of a tone ringer circuit ICC-VCC(5002P) graph in typical performance characteristic illustrates the variation of supply current with supply voltage. Curve B(RSL=6.8k) shows the ICC-VCC characteristic for 5001P circuit Tone Ringer. Curve A is a plot with RSL< 6.8 K and shows a increase in the current drawn up to the initiation voltage VCC(INI). The ICC-VCC characteristic after initiation remains unchanged. Curve C shows the effect of increasing RSL above 6.8 K . Initiation current decreases but again current after triggering is unchanged. 2. Pin 2 Input Equivalent Circuit(5001P)
D1 Q1 D2 R1 300K P I N2
Q2
Usually pin 2 is used at an open state, but in the 5001P circuit the trigger in terminal may be used to externally trigger oscillation for voltage in the range VSUS VCC VCC(INI) or disable ringer operation. The ringer circuit can only oscillate when Q1 and Q2 are conducting. Normally when supply voltage VCC exceeds the supply initiation voltage VCC(INI) base Current flows into Q1 via D1 causing Q1 and Q2 conduct. This continues until VCC is taken below the minimum sustaining voltage (VSUS).
KSI-W012-001
5
SL5001P/2P
Application Circuits And Information (continued)
3. Enabling Oscillation of the 5001P circuit for Supply Voltages less than VCC(INI).
V cc
The 5001P Circuit can oscillate when
ITR
powered from supply voltages in the range VSUS VCC VCC(INI). Oscillation is ensured by
1 8
forcing a current ITR(10uA ITR 1mA) into pin2 should be exceeded VTR by the sum of zener voltage of D3 the VBE of Q1 and the VBE of Q2(Typ. 11V). The required current drive can be provided by connecting a resistor RE(20k RE (VCC-11)/10M ) between pin1 and VCC.
RE 2
SL5001P
7
DBL5001 SL5002P
3 V
TR
6
4
5
G ND
4. Reducing the Effective Value of VCC(INI) for the 5001P circuit
V cc
ITR
To operate the 5001P circuit from a DC 12V supply, RE should be typically 50k . This operation can also be used to reduce the
1 8
VZ
effective value of the VCC(INI), by inserting a zener diode in series with RE. Then, this initiating voltage VCC(INI) is VIR + VZ + 10RE
RE 2
SL5001P SL5002P
7
DBL5001
6
3 V TR 4
5
GND
KSI-W012-001
6
SL5001P/2P
Application Circuit And Information (continued)
5. Inhibiting Oscillation of the 5001P circuit
V cc
V cc
1
8
1 I D IS
8
2
7
2 R1 V DIS
7
SL5001P DBL5001
3
SL5001P DBL5001
3
SL5002P 6
5
SL5002P
6
4
4 V IH
G ND
5
G ND
When the 5001P circuit is oscillating , this circuit may be inhibited for voltage in the range VCC(INI) < VCC VCC(MAX) by sinking the current from D1, starving Q1 of base current. This is achieved by either grounding pin2 or applying a voltage VIH via a resistor R1 to pin2
KSI-W012-001
7
SL5001P/2P
These AUK products are intended for usage in general electronic equipments(Office and communication equipment, measuring equipment, domestic electrification, etc.). Please make sure that you consult with us before you use these AUK products in equipments which require high quality and/or reliability, and in equipments which could have major impact to the welfare of human life(atomic energy control, airplane, spaceship, traffic signal, combustion central, all types of safety device, etc.). AUK cannot accept liability to any damage which may occur in case these AUK products were used in the mentioned equipments without prior consultation with AUK.
KSI-W012-001
8

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