01W127A
PCM CODEC for Digital cellular phones
BU8776KN
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.
Dimension (Units : mm)
1.4 ± 0.1
0.6
+0.1
-0.3
37
7.2 ± 0.1
7.0 ± 0.1
36
25
24
8±
0.1
7.2 ± 0.1
7.0 ± 0.1
48
1
12
0.2 ± 0.05
Features
1) +3V single power supply (V
DD
=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
0.4
0.18 ± 0.05
0.05 M
12°
12°
0.05
QFN48U
Applications
PDC/CDMA/GSM type digital cellular phones
November, 2001
0.01
+0.03
-0.007
0.6 ± 0.1
+0.2
0.8
-0.1
0.1
55
0.
3-
.1
0 .4
+ 0
-
4
0.
5
-
.1
0 .3
+ 0
13
LSI [ LSI COMPUTER SYSTEMS ]
