Datasheet SA8507D, SA8507S Datasheet (SILAN)

Silan Semiconductors

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COMPANDER

DESCRIPTION

SA8507 is a automatic gain control system that is used for

dynamic range compression and expansion. According to the

companding the signal, this can reduce the noise components.

SA8507 includes compressor, expander, pre-amp, filter amp, limiter

and mute/bypath logic.

FEATURES

* Wide supply voltage: 2.4V ~ 7V

* Easy gain control

* Mute/bypath logic

* Data in/out pin

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ORDERING INFORMATION

SA8507D DIP-20-300 Package

SA8507S SOP-20-375 Package

PIN CONFIGURATION

FO

1

FI

2

CO

3

DI

4

5

AGIC

6

CRC

7

CPI-

8

CPI+

9

CB

GND CMUTE

20

19

18

17

16

15

SA8507

14

13

12

1110

SA8507

DIP-20

SOP-20

Vcc

EO

ERC

DO

EPI-

EPI+

EB

EMUTE

BYPATH

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REV: 1.1 2001-11-30

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BLOCK DIAGRAM

Mute

FICODICRCAGIC

+

-

Logic1112

Bias Circuit

10149191817

CPI-

EPI-

5 6 4 3 2

Rectifier

Byath

Variable Resistor

7

8CPI+

16

15EPI+

+

-

Byath

+

-

DO ERC EO CB EB GND

Varia ble Resistor

Rectifier

Summing

AMP

Summing

AMP

Expandor

Mute

Compressor

Output Buffer

Compressor

Limiter

ABSOLUTE MAXIMUM RATINGS

(Ta=25°C )

Characteristic Symbol Value Unit

Supply Voltage VCC 10 V

Power Dissipation

Operating Temperature T

Storage Temperature T

SA8507D 1000 mW

SA8507S

PD

-22 ~ +70

OPR

-55 ~ +150

STG

410 mW

ELECTRICAL CHARACTERISTICS

(Ta=25°C)

Characteristic Symbol Test Condition Min Typ. Max Unit

DC ELECTRICAL CHARACTERISTICS

Operating Voltage VCC -- -- 2.4 7.0 V

Operating Current ICC No Signal -- 4.0 6.5 mA

COMPRESSOR PART

Standard Output Voltage V

Gain Deference

Bypath Gain Difference

∆G

Output Distortion THD

Noise Output Voltage V

Mute Attenuation Radio ATT

Maximum Voltage V

Vin=12.5mV 240 300 360 mVrms

O(COMP)

V1(COMP)

V2(COMP)

VB(COMP)

NO(COMP)

Vin=-20dB(300mV=0dB) -0.5 0 +0.5

Vin=-40dB -1.0 0 +1.0

Vout=0dB, BYPATH=GND -1.5 0 +1.5 dB

Vin=0dB -- 0.5 1.0 %

COMP

Rg=620hm -- 3.0 5.5 mVrns

Vin=0dB, CMUTE=GND 60 80 -- dB

MUTE

-- 1.15 1.35 1.50 Vrms

out

SA8507

1

FO

CMUTE

BYPATH

13

EMUTE

20

Vcc

(To be continued)

°C

dB

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REV: 1.1 2001-11-30

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(Continued)

Characteristic Symbol Test Condition Min Typ. Max Unit

EXPANDER PART

Standard Output Level (0dB) V

Gain Difference

Bypath Gain Difference

Output Distortion THD

Noise Output Voltage V

Mute Attenuation Ratio ATT

Max. Output Voltage V

Vin=30mVrms=0dB 110 130 160 mVrms

O(EXP)

∆G

V1(EXP)

V2(EXP)

V3(EXP)

VB(EXP)

Vin=0dB -- 0.5 1.5 %

EXP

Rg=620hm -- 10.0 30.0

NO(EXP)

Vin=0dB, EMUTE=GND 60 80 -- dB

MUTE

OEXP(MAX)

THD=10% 700 800 -- mVrms

Vin=-10dB -0.5 0 +0.5

Vin=-20dB -1.0 0 +1.0

Vin=-30dB -1.5 0 +2.0

Vin=0dB, BYPATH=GND -2.5 0 +0.5 dB

PIN DESCRIPTION

Pin No. Symbol Description Pin No. Symbol Description

1 FO Filter Amp Output 11 CMUTE Compressor Mute

2 FI Filter Amp Input 12 BYPATH No Companding

3 CO Compressor Output 13 EMUTE Expander Mute

4 DI Data Input 14 EB Expander Reference Bias

5 AGIC AC Gain Infinity Capacitor 15 EPI+ Expander Non-inverting Input

6 CRC Compressor Rectifier Capacitor 16 EPI- Expander Inverting Input

7 CPI- Compressor Inverting Input 17 DO Data Output

8 CPI+ Compressor Non-inverting Input 18 ERC Expander Rectifier Capacitor

9 CB Compressor Reference Bias 19 EO Expander Output

10 GND Ground 20 Vcc Supply Voltage

SA8507

dB

µVrms

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.1 2001-11-30

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TEST CIRCUIT

COMP OUT 1F

100k

10k

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1

FO

2

FI

1

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F

3

CO

Vcc

EO

ERC

20

19

2.2uF

18

Vcc

10uF

1.0uF

SA8507

EXP OU T

COMP

IN

4.7uF

APPLICATION CIRCUIT

Speaker

Vcc

47F

22uF

2.2uF

9.1k0.47uF

474

620

4

DI

AGIC

5

CRC

6

CPI-

7

CPI+

8

CB

9

GND CMUTE

390k

473

Exp

-

+

17

DO

51k 50pF

16

EPI-

474

15

EPI+

SA8507B

100k

14

EB

EMUTE

BYPATH

Data

Output

473

2.2F

18 1720 19

-

+

13

SW3

12

SW2

1110

SW1

Expander

Input

104

0.47F

10k

33k

47k

16 15 14 13 12 11

+

620 EX P IN

Expander

Mute

10F

REG LOGIC

-

1.0

Compressor

REG

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F100k

Mute

33k

TO TX

Modulation

1 2 3 4 5 6 7 8

104

5.6k

132 101

120k

33k

22F

39k

473

22F

1F8.2k

223103

109

2.2k

MC

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.1 2001-11-30

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PACKAGE OUTLINE

DIP-20-300-2.54 UNIT: mm

2.54

SA8507

0.25

6.40

1.50

22.95

3.51

0.46

7.62

15 degree

5.083.30

SOP-20-375-1.27 UNIT: mm

7.70

10.45

9.53

1.27

18.02

17.62

0.41

1.95

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.1 2001-11-30

5

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