[AK4646]
■ Comparison with AK4642/AK4643
1. Function
Function
AK4642
AK4643
AK4646
AVDD
DVDD
Power Supply for SPK-Amp
2.6V ∼ 3.6V
2.6V ∼ 3.6V
2.6V ∼ 5.25V (HVDD)
0.75 x AVDD
2.2V ∼ 3.6V
1.6V ∼ 3.6V
2.2V ∼ 4.0V (SVDD)
0.8 x AVDD
Output Voltage of
MIC Power
MIC-Amp
0dB/+20dB/+26dB/+32dB
0dB/+10dB/+17dB/+20dB/
+23dB/+26dB/+29dB/
+32dB
HPF / LPF
Notch filter
1 Step
No
HPF : 2 Step, LPF : 1 Step
5 Band
ALC Recovery Operation
Waiting Period
Read of ALC Volume
Output Volume
128/fs ∼ 1024/fs
128/fs ∼ 16384/fs
No
128/fs ∼ 16384/fs
No
Yes
+12dB ∼ -115dB, 0.5dB Step
+36dB ∼ -54dB, 0.375dB Step
(Note 1)
0dB ∼ -18dB, 6dB Step
No
No
Headphone-Amp
Bass Boost
Yes
Yes
Receiver-Amp
No
Yes
No
SPK-Amp Output Power
Analog Mixing
ADC Input Selector
400mW@3.3V
1 Mono
2 Stereo
1.2W@5V
2 Stereo
3 Stereo
400mW@3.3V
1 Mono
2 Stereo
SPK-Amp Maximum Output 8.5Vpp@SVDD=5V
Voltage for Piezo Speaker
6.33Vpp@SVDD=3.8V
3-Wire(Write only), I2C-Bus
3-Wire(Read/Write)
μP I/F
Audio I/F Format
DSP Mode
EXT Master Mode
No
No
Yes
Yes
No
No
Master Clock frequency for 11.2896MHz, 12MHz, 12.288MHz, 13.5MHz
PLL Mode 24MHz, 27MHz
12MHz, 13.5MHz, 24MHz,
27MHz
Note 1. ALC and Volume circuits are shared by input and output. Therefore, it is impossible to use ALC and Volume
function at same time for both recording and playback mode.
MS0557-E-05
2011/01
- 4 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
