PCM CODEC for Digital cellular phones

BU8776KN

Description

Dimension (Units : mm)

Features

Applications

01W127A

November, 2001

QFN48U

7.0 ± 0.1

7.2 ± 0.1

0.4

0.18 ± 0.05

0.05

12°

12°

0.6

1.4 ± 0.1

+0.1

-0.3

0.05 M

12

1

13

24

48

37

25

36

PDC/CDMA/GSM type digital cellular phones

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.

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