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Asahi Kasei Microsystems |
ASAHI KASEI
AK2301A
AK2301A
3.3V Single channel PCM CODEC LSI
GENERAL DESCRIPTION
The AK2301A is a single channel PCM CODEC
for speech processing 8kHz sampling PCM data by
DSP. The AK2301A interfaces with 14bit linear
data (16bit format).
It includes Band limiting filter, A/D and D/A
converter, and universal op-amps for construction
of the output filter. All functions are provided in
small 24pin VSOP package and it is good for
reducing the mounting space.
PACKAGE
- 24pin VSOP
・Pin to pin 7.9mm x 7.6mm
・Pin pitch 0.65mm
FEATURE
- Single PCM CODEC and filtering systems
- Mute function
- PCM interface; 14bits linear data
(16bit format, serial interface)
- Long Frame / Short Frame are selected
automatically
- PCM data rate
256kHz/512kHz
- Op-Amp for the external gain adjustment
- Dual universal op-amps
- Single power supply voltage
+3.3±0.3V
- Low power consumption
- Small package
BLOCK DIAGRAM
GST
VFTN
VFTP
AMPT
VR
VFR
GSR
AMPR
AAF
A/D
SMF
D/A
CODEC Core
PCM I/F
TAGND
Internal
Main Clock
PLL
VREF
VDD
www.DataSheVeSt4SU.com
BGREF
AK2301A
AMP1
AMP2
AMP1O
AMP1I AMP2O
AMP2I
DX
DR
FS
BCLK
PLLC
MUTEN
RSTN
TEST1
TEST2
TEST3
<MS0300-E-00>
1
2004/3
ASAHI KASEI
CONTENT
ITEMS
PAGE
- BLOCK DIAGRAM…………………………………… 1
- PIN CONDITION……………………………………… 3
- PIN FUNCTION……………………………………….. 4
- ABSOLUTE MAXIMUM RATINGS………………… 5
- RECOMMENDED OPERATING CONDITIONS…...5
- ELECTRICAL CHARACTERISTICS………………...5
- PACKAGE INFORMATION…………………………. 10
- PIN ASSIGNMENT…………………………………… 11
- MARKING……………..………………………………. 11
- CIRCUIT DESCRIPTION….………………………. 12
- FUNCTIONAL DESCRIPTION……………………… 13
- PCM CODEC………….…………………………. 13
- PCM INTERFACE…………...…………………... 14
- Long Frame / Short Frame…....……………... 14
- MUTE……………………………….…………….. 16
- RESET SEQUENCE……………………….……. 17
- Universal op-amps……………………………. 18
- APPLICATION CIRCUIT EXAMPLE ……………….19
AK2301A
www.DataSheet4U.com
<MS0300-E-00>
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2004/3
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