BU8776KN Datasheet, PDF (1/2 Pages) LSI Computer Systems – PCM CODEC for Digital cellular phones

01W127A
PCM CODEC for Digital cellular phones
BU8776KN
Description
Dimension (Units : mm)
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.
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
1.4 ± 0.1
0.6
+0.1
-0.3
0.55_-+00.4.1
0.4
0.18 ± 0.05
3-0.45-+0
0.3.1
0.18 ^{± 0.1}
0.05 M
7.2 ± 0.1
7.0 ± 0.1
36
25
37
24
48
1
12°
13
12
12°
0.05
QFN48U
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
November, 2001