描述 Description

BU8776KN is PCM CODEC deveolped for digital cellular phones. High-precision linear CODEC and each audio part are integrated into a single chip by mixed signal technology. Compact and thin QFN48U package is adopted.

特性 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 deta 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

Applications

PDC/CDMA/GSM type digital cellular phones