Description

BU8732AK is a PCM CODEC developed for digital cellular phones. It is a high-precision linear CODEC that integrates each audio part into a single chip using mixed signal technology. The codec comes in a compact and thin QFN48U package.

Specifications and features

1) +3V single power supply (VDD=2.7~3.3V)
2) 14bit high-precision linear µ/A-LAW CODEC
3) Transmission filter in CODEC (Based on ITU-T G.714)
4) Built-in PLL circuit for generating system clock
5) Built-in DSP I/F for PDC, N-CDMA
6) Serial I/F for register setting adapted for 3-wire serial type
7) Selectable PCM data transmission clock frequency
µ/A-LAW 64kHz~2048kHz
Linear 128kHz~2048kHz
8) Wide variety of Analog I/O functions
- Built-in two microphone amplifiers (Differential input type, single input type)
- Built-in speaker amplifier for receiver (32 BTL type)
- Built-in speaker amplifier for earphone (32 single type)
- Built-in driver amplifier for receiving REXT (600)
- Built-in electronic volume for gain control (Receiving, Transmitting, TONE)
- Built-in data signal I/O circuit can connect outside
* REXT, earphone, and receiver output reduce the pop noise by soft mute when power is ON/OFF.
9) QFN48U small, thin package

Application Scenarios

BU8732AK is suitable for PDC/CDMA/GSM type digital cellular phones.

Comparison