Datasheet

[AK4646]
MS0557-E-06 2011/06
- 4 -
■ Comparison with AK4642/AK4643
1. Function
Function AK4642 AK4643 AK4646
AVDD
2.6V ∼ 3.6V 2.2V ∼ 3.6V
DVDD
2.6V ∼ 3.6V 1.6V ∼ 3.6V
Power Supply for SPK-Amp
2.6V ∼ 5.25V (HVDD) 2.2V ∼ 4.0V (SVDD)
Output Voltage of
MIC Power
0.75 x AVDD 0.8 x AVDD
MIC-Amp 0dB/+20dB/+26dB/+32dB 0dB/+10dB/+17dB/+20dB/
+23dB/+26dB/+29dB/
+32dB
HPF / LPF 1 Step HPF : 2 Step, LPF : 1 Step
Notch filter No 5 Band
ALC Recovery Operation
Waiting Period
128/fs ∼ 1024/fs 128/fs ∼ 16384/fs 128/fs ∼ 16384/fs
Read of ALC Volume No No Yes
Output Volume
+12dB ∼ -115dB, 0.5dB Step +36dB ∼ -54dB, 0.375dB Step
(
Note 1)
0dB ∼ -18dB, 6dB Step
Headphone-Amp Yes No
Bass Boost Yes No
Receiver-Amp No Yes No
SPK-Amp Output Power 400mW@3.3V 1.2W@5V 400mW@3.3V
Analog Mixing 1 Mono 2 Stereo 1 Mono
ADC Input Selector 2 Stereo 3 Stereo 2 Stereo
SPK-Amp Maximum Output
Voltage for Piezo Speaker
8.5Vpp@SVDD=5V 6.33Vpp@SVDD=3.8V
μP I/F
3-Wire(Write only), I2C-Bus 3-Wire(Read/Write)
Audio I/F Format
DSP Mode No Yes No
EXT Master Mode No Yes No
Master Clock frequency for
PLL Mode
11.2896MHz, 12MHz, 12.288MHz, 13.5MHz
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.