View CXA2502_143499.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

CXA2502M
Dolby B-C Type Noise Reduction System for Playback
Description The CXA2502M is a bipolar IC incorporating stereo Dolby B-C type noise reduction (NR) system for playback. Pins of this IC are compatible with those of the Dolby B type NR ICs CXA1102M/ CXA1552M. A reduction in the number of external parts and small package have been achieved due to the fact that the spectral skewing circuits are all on-chip and this IC is intended for playback. Features * Few external parts * Spectral skewing circuit are on-chip * NR OFF/B/C and AUX/TAPE switches * Small package (16-pin SOP) * Low current consumption 12mA Typ. * Built-in two channels Structure Bipolar silicon monolithic IC Absolute Maximum Ratings (Ta = 25C) * Supply voltage VCC 17 V * Operating temperature Topr -40 to +85 C * Storage temperature Tstg -65 to +150 C * Allowable power dissipation PD 600 (SOP) mW 16 pin SOP (Plastic)
This IC is available only to the licensees of Dolby Laboratories Licensing Corporation from whom licensing and applications information may be obtained. "Dolby" and the double D symbols are trademarks of Dolby Laboratories Licensing Corporation. Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
-1-
E95621A5X-PS
Block Diagram, Pin Configuration and Application Circuit
P12 C13 1
P13
LINEOUT1 (-6dBm)
PBIN1 (-30dBm) AUXIN1 (-30dBm)
P11
PBIN1
LINEOUT1
C11 1
C12 1
R1 20k
TAPE
AUX
C14 100n
C15 68n
AUXIN1
IREF
TCH1
GND
16 11
15 10
14
13 12 9
MODE
HDET
MOA SSK
HLS
TCL1
LDET LLS P1 VCC LLS LDET 7 8 C25 68n
VCC
VCT
PBIN2
AUXIN2
NRSW
C21 1
C2 10
C22 1
C1 47
C
B
OFF
LINEOUT2
C24 100n C23 1
P21
AUXIN2 (-30dBm) PBIN2 (-30dBm)
P22
TCH2
TCL2
-2-
IREF SSK MOA HLS HDET 2 3 4 5 6
Mode Control
1
P23
LINEOUT2 (-6dBm)
CXA2502M
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
CXA2502M
Pin Description Pin No. Symbol Z (in) VDC (V) Equivalent circuit
VCC
Description
VCT
1 16
40k
AUX IN
40K
VCT
Auxiliary input. Reference level = -30dBm
GND
2
VCC
VCC
VCC
Positive power supply.
VCT
3 14
40k
PB IN
40K
VCT
Playback input. Reference level = -30dBm
GND
4
VCT
0
VCT
Dual power supply: Ground Single power supply: Vcc/2
VCC 50A 22k
5
NRSW
--
--
NR control High: C type Medium:B type Low: NR OFF
GND VCC
200
6 11
LINE OUT
0
VCT
200
Line output.
GND
-3-
CXA2502M
Pin No.
Symbol
Z (in)
VDC (V)
Equivalent circuit
VCC
Description
7 10
TCH
--
0.4V
13k
36k
Time constant for the HLS.
330k GND
VCC
8 9
TCL
--
0.4V
13.5k
Time constant for the LLS.
480k GND VCC 50A 22k
12
MODE
--
--
MODE control High: TAPE Low: AUX
GND
VCC
13
IREF
0
1.25V
1.25V
Reference current which determines the built-in filter cut-off frequency.
GND
15
GND
GND
Dual power supply: Negative power supply Single power supply: Ground
-4-
CXA2502M
Electrical characteristics Characteristics Operating voltage Current consumption LINEOUT level AUX IN level PB IN level Decode characteristics B type boost (1) (2) (3) (4) C type boost (1) (2) (3) (4) (5) (6) Signal handling Total harmonic distortion 1) NR OFF 2) B 3) C Decode S/N ratio REC-PB PB-REC ch to ch Offset voltage (OFF-C type) THD (OFF) THD (B) THD (C) SN (CCIR) CT-1 CT-2 CT-3 Voff PB PB PB PB OFF B C C 1k 1k 1k -- 1k 1k 1k -- +10dB +10dB +10dB Rg = 5k (CCIR/ARM) 0dB 0dB 0dB -- -- -- 75 -- -- -- -100 C-R-1 C-R-2 C-R-3 C-R-4 C-R-5 C-R-6 Vomax PB PB PB PB PB PB PB C C C C C C OFF 500 500 2k 2k 5k 10k 1k -60dB -25dB -60dB -25dB -25dB 0dB THD = 1% 14.2 7.2 18.7 5.4 3.5 -5.5 13.5 B-R-1 B-R-2 B-R-3 B-R-4 PB PB PB PB B B B B 500 5k 10k 10k -25dB -25dB -40dB 0dB 1.4 3.9 9.7 -1.1 Symbol Vopr ICC Vlout Vlin Vpin OFF AUX OFF PB OFF 1k 1k 1k No Signal Measurement conditions P/A NR f (Hz) Other conditions Min. 7.2 8.0 -7.0 -32 -32
(Ta = 25C, VCC = 9V) Typ. -- 12.0 -6.0 -30 -30 Max. 16.0 18.0 -5.0 -28 -28 Unit V mA dBm dBm dBm
2.9 5.4 10.4 0.4 16.2 9.2 20.7 7.4 5.5 -3.5 16.0
4.4 6.9 11.4 1.9 18.2 11.2 22.7 9.4 7.5 -1.5 --
dB dB dB dB dB dB dB dB dB dB dB
0.01 0.03 0.04 83 -85 -85 -68 0
0.1 0.1 0.2 -- -70 -70 -60 100
% % % dB dB dB dB mV
PB OFF AUX OFF PB OFF PB OFF C
0dB means the level which provides -6dBm to the line output when NR is off.
-5-
Electrical Characteristics Measurement Circuit
S12 S2_1 DC Volt Meter C12 1
VMODE 100n
C13 1
S11 R1 20K 13 12 11 10 9 C14 C15 68n
C11 1 15 14
16
GND
IREF
PBIN1
AUXIN1
MODE
LINEOUT1
TCH1
TCL1
AUXIN2
PBIN2
LINEOUT2
NRSW
VCC
VCT
1 3 C22 1
VNRSW
2 4 7 C24 100n C25 68n 8 C2 100
5
6
C21 1
C1 100
S21
TCH2
TCL2
-6-
CXA2502M S2_2 C23 1
VCC
Audio SG
A
CCIR/ARM Filter
S3 Audio Analyzer
S22
CXA2502M
CXA2502M
Application Note The CXA2502M is a stereo Dolby B-C type NR IC like the CXA1560 series. Few external parts and smaller package can be achieved because this IC has a built-in spectral skewing circuit and the reduced number of pins for playback. 1) Power Supply The CXA2502M is designed to operate on either single or dual power supply. For dual power supply, connect VCT pin to GND, and GND pin to the negative power supply. For single power supply, connect GND pin to GND. VCC/2, generated from the internal circuit, is output to VCT pin. Connect a by-pass capacitor between this pin and GND. The operating voltage range is 7.0 to 16V, which satisfies the signal handling of 12dB specified by the Dolby Laboratories. 2) Operation Mode Control The CXA2502M has built-in electronic switches. The operations are controlled by the DC voltages of NRSW and MODE control pins. Table 1 shows the switching truth tables. For single power supply, VH, VM and VL correspond to VCC, VCC/2 and GND, respectivery. For dual power supply, VH, VM and VL correspond to VCC, GND and VEE, respectively. Refer to "threshold" on the characteristics graph for the thresholds of the control voltages. NRSW and MODE control pins are connected to VCT via a 50k resistor, so when the pin is open, VM condition results. VH NRSW MODE C type VM B type TAPE Table 1 VL NR OFF AUX
3) Reference level The CXA2502M Dolby level is -6dBm (388mVrms). The reference level of the playback input pin (PB IN) is defined as the levels which provide the line output level to the line output pin (LINE OUT) in NR OFF mode.
-7-
CXA2502M
Example of Representative Characteristics
Quiescent current consumption vs. Supply voltage
ICC - Quiescent current consumption [mA] ICC - Quiescent current consumption [mA]
Decode Mode 15 14 13 12 11 10 9 4 6 8 10 12 14 16 NR OFF B type C type
Quiescent current consumption vs. Input level
Decode Mode VCC = 9V 15 0dB = -6dBm 14 B f = 10kHz 13 NR OFF 12 11 10 9 -12 -8 -4 0 4 8 12 B f = 1kHz C f = 1kHz
C f = 10kHz
VCC - Supply voltage [V]
Input level [dB]
B type decode characteristics
-2 0 2 0dB -10dB -4 0
C type decode characteristics
0dB -10dB 4
Decode boost [dB]
Decode boost [dB]
-20dB 8 12 16 20 -30dB -40dB -50dB VCC = 9V 0dB = Lineout Level 100 200 500 1k 2k -60dB
4 6 8 10 12 100 200 500 1k 2k 5k
-20dB
-30dB
VCC = 9V 0dB = Lineout Level
-40dB 10k 20k
24 5k 10k 20k
Frequency [Hz]
Frequency [Hz]
Signal handling
Decode Mode f = 1kHz THD = 1% 20 0dB = -6dBm
Load characteristics
Decode Mode VCC = 9V 12 THD = 1% f = 1kHz 10 NR OFF 8 6 4 2 0
C type
10
0
4
6
8
10
12
14
16
Maximum output level [dBm]
NR OFF
Signal handling [dB]
100
300
1k
3k
10k
VCC - Supply voltage [V]
Frequency [Hz]
-8-
CXA2502M
NR OFF total harmonic distortion-1
Decode Mode VCC = 9V 0.1 0dB = -6dBm
NR OFF total harmonic distortion-2
Decode Mode f = 1kHz 0.1 0dB = -6dBm
Distortion [%]
Distortion [%]
0.01
f = 10kHz
0.01
VCC = 7V
f = 100Hz f = 1kHz
VCC = 16V
0.001 -4 0 4 8 12 16 20 Output level [dB]
0.001 -4 0 4 8 12 16 20 Output level [dB]
B type total harmonic distortion-1
Decode Mode VCC = 9V 0.1 0dB = -6dBm f = 100Hz
B type total harmonic distortion-2
Decode Mode f = 1kHz 0.1 0dB = -6dBm
Distortion [%]
Distortion [%]
f = 1kHz f = 10kHz 0.01
VCC = 7V
0.01 VCC = 16V
0.001 -4 0 4 8 12 16 20 Output level [dB]
0.001 -4 0 4 8 12 16 20 Output level [dB]
C type total harmonic distortion-1
Decode Mode VCC = 9V 1.0 0dB = -6dBm f = 10kHz
C type total harmonic distortion-2
Decode Mode f = 1kHz 1.0 0dB = -6dBm
Distortion [%]
0.1
f = 100Hz
Distortion [%]
0.1 VCC = 7V VCC = 16V
f = 1kHz 0.01 -4 0 4 8 12 16 20 Output level [dB] 0.01 -4 0 4 8 12 16 20 Output level [dB]
-9-
CXA2502M
Cross talk
-30 VCC = 9V Input = +10dB Refer to Dolby Level -40 NR OFF
Cross talk [dB]
-50 -60 -70 -80 -90 AUX to PB, PB to AUX
CH to CH
100
300
1k
3k
10k
Frequency [Hz]
MODE control threshold
14
VCM - MODE control voltage [V]
12 10 8 PB 6 4 2 0
AUX 4 6 8 10 12 14 16
VCC - Power supply [V]
NR control threshold
14 VCC
VCN - NR control voltage [V]
12 10 C type 8 6 B type 4 2 0 VCT
NR OFF 4 6 8 10 12 14 16
VCC - Supply voltage [V]
- 10 -
CXA2502M
Package Outline
Unit: mm
16PIN SOP (PLASTIC)
+ 0.4 9.9 - 0.1
+ 0.4 1.85 - 0.15
16
9 0.15 + 0.2 0.1 - 0.05
+ 0.3 5.3 - 0.1
7.9 0.4
0.45 0.1
1.27
+ 0.1 0.2 - 0.05
0.24 M
PACKAGE STRUCTURE
PACKAGE MATERIAL SONY CODE EIAJ CODE JEDEC CODE PACKAGE MASS SOP-16P-L01 SOP016-P-0300 LEAD MATERIAL COPPER ALLOY 0.2g LEAD TREATMENT EPOXY RESIN SOLDER PLATING
- 11 -
0.5 0.2
1
8
6.9

▲Up To Search▲

Price & Availability of CXA2502

	To Download CXA2502 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .