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
-
Mute function
-
PCM interface; 14bits linear data
systems
(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
AAF
A/D
PCM I/F
VR
VFR
GSR
Internal
Main Clock
BGREF
AMP1
AMP2
SMF
AMPR
D/A
CODEC Core
DX
DR
FS
BCLK
PLL
PLLC
MUTEN
RSTN
TEST1
TEST2
TEST3
AMP2I
TAGND
VREF
VDD
VSS
AK2301A
AMP1O
AMP1I
AMP2O
<MS0300-E-00>
1
2004/3