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MM1102

Compander IC

Mitsumi 

MITSUMI

Compander IC

Monolithic IC MM1102

Compander IC MM1102

This IC was developed for use in cordless telephones. It is a compander IC incorporating

compressor/expander circuits for a significant noise reduction effect without complicated external circuitry.

On the transmission side, the dynamic range of audio signals is compressed by the compressor circuit; on the

receiving side, the expander expands the signals. As a result the dynamic range over the transmission

channel is reduced logarithmically by one-half.

Features

1. Can be driven at low voltages (down to 2.4V)

2. Internal mute function

3. Internal limiter (IDC) function

4. Two internal op-amps (for splatter filter)

5. Internal standby function

6. Data input, output pins

7. Independent mute circuit

Package

SSOP-24A (MM1102XF)

Applications

1. Cordless telephones

2. Various mobile communication devices

Pin Assignment

24 23 22 21 20 19 18 17 16 15 14 13

1 2 3 4 5 6 7 8 9 10 11 12

SSOP-24A

1

C.Vref

9

C.OUT

17 E.MUTE SW

2

C.IN

10

BUFIN 1

18

E.OUT

3

C.IN-

11

BUFOUT 1

19

E.RECT

4

C.RECT

12

GND

20

A.OUT

5

C.RIN

13

BUFIN 2

21

A.IN-

6

C.FB

14

BUFOUT 2

22

A.IN+

7

C.NF

15 STANDBY SW 23

E.Vref

8

DATA IN

16 C.MUTE SW 24

VCC

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