¡ Semiconductor

MSM7716

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¡ Semiconductor

MSM7716

Single Rail Linear CODEC

GENERAL DESCRIPTION

The MSM7716 is a single-channel CODEC CMOS IC for voice signals that contains filters for

linear A/D and D/A conversion.

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

optimized for applications for the analog interfaces of audio signal processing DSPs and digital

wireless systems.

The analog output signal can directly drive a ceramic type handset receiver. In addition, levels

for analog outputs can be set by external control.

FEATURES

• Single power supply

: +2.7 V to +3.6 V

• Low power consumption

Operating mode

: 24 mW Typ.

Power down mode

: 0.05 mW Typ.

• Digital signal input/output interface

: 14-bit serial code in 2's complement format

• Sampling frequency(fs)

: 4 to 16 kHz

• Transmission clock frequency

: fs ¥ 14 min., 2048 kHz max.

• Filter characteristics

: when fs = 8 kHz, complies with ITU-T Recommen-

dation G. 714

• Built-in PLL eliminates a master clock

• Two input circuits in transmit section

• Two output circuits in receive section

• Transmit gain adjustable using an external resistor

• Receive gain adjustable by external control 8 steps, 4 dB/step

• Transmit mic-amp is eliminated by the gain setting of a maximum of 36 dB.

with push-pull driving.

• Built-in reference voltage supply

• Package options:

32-pin plastic TSOP (TSOPI32-P-814-0.50-1K) (Product name : MSM7716TS-K)

30-pin plastic SSOP (SSOP30-P-56-0.65-K)

(Product name : MSM7716GS-K)

E2U0043-28-82

This version: Aug. 1998

Previous version: Nov. 1996