¡ Semiconductor

MSM7702-01/02/03

1/17

¡ Semiconductor

MSM7702-01/02/03

Single Rail CODEC

GENERAL DESCRIPTION

The MSM7702 is a single-channel CODEC CMOS IC for voice signals ranging from 300 to 3400

Hz with filters for A/D and D/A conversion.

Designed especially for a single-power supply and low-power applications, the device is

optimized for telephone terminals in digital wireless systems or ISDN systems.

The MSM7702 utilizes low-voltage operational amplifiers (Op-amps) to provide low-power

consumption.

The device uses the same transmission clocks as those used in the MSM7508B and MSM7509B.

The analog output signal can directly drive a piezoelectric type handset receiver.

FEATURES

• Single power supply: +2.7 V to +3.8 V

• Low power consumption

Operating mode:

15 mW Typ.

Power save mode:

3.6 mW Typ.

Power down mode:

0.05 mW Typ.

• ITU-T Companding law

MSM7702-01:

m/A-law pin selectable

MSM7702-02:

m-law

MSM7702-03:

A-law

• Built-in PLL eliminates a master clock

• Serial data rate: 64/128/256/512/1024/2048 kHz

96/192/384/768/1536/1544/200 kHz

• Adjustable transmit gain

• Built-in reference voltage supply

• Analog output can directly drive a load equivalent to 1.2 kW

• Pin-for-pin compatible with the MSM7578 and MSM7579

• Package options:

24-pin plastic SOP (SOP24-P-430-1.27-K)

(Product name : MSM7702-01GS-K)

(Product name : MSM7702-02GS-K)

(Product name : MSM7702-03GS-K)

20-pin plastic SSOP (SSOP20-P-250-0.95-K) (Product name : MSM7702-01MS-K)

(Product name : MSM7702-02MS-K)

(Product name : MSM7702-03MS-K)

E2U0018-28-81

This version: Aug. 1998

Previous version: Nov. 1996