AK4649 Datasheet, PDF (4/96 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK-AMP

[AK4649]
■ Comparison with AK4646/AK4649
1. Function
Function
AK4646
AK4649
Resolution
16bit
24bit
AVDD
2.2V ∼ 3.6V
2.4V ∼ 3.6V
DVDD
1.6V ∼ 3.6V
←
SVDD
2.2V ∼ 4.0V
2.4V ∼ 3.6V
ADC DR, S/N
86dB @ MGAIN = 20dB
89dB @ MGAIN = 20dB
95dB @ MGAIN = 0dB
100dB @ MGAIN = 0dB
DAC S/N
92dB
97dB
Power Supply Current
AVDD+DVDD: typ. 15mA
AVDD+DVDD: typ. 12.5mA
(PLL Master, All Power-Up)
Output Voltage of MIC Power 0.8 x AVDD
←
Input Level
typ. 0.636 x AVDD @ MIC Gain=0dB typ. 0.7 x AVDD @ MIC Gain=0dB
Output Level (line out)
typ. 0.6 x AVDD @LOVL=0dB
typ. 0.7 x AVDD @LOVL=0dB
MIC-Amp
0dB/+10dB/+17dB/+20dB/+23dB/ 0dB/+3dB/+6dB/+9dB/+12dB/
+26dB/+29dB/+32dB
+16dB/+20dB/+23dB/+26dB/+29dB
HPF with ADC (HPF1)
Programmable
4 values
(fc = 3.4Hz/13.6Hz/108.8Hz/217.6Hz
@ fs=44.1kHz)
Notch Filter
5 Step
5 Step (4 Step + 1 Step)
ALC Noise Suppression
No
Yes
Programmable Filter Bypass No
Yes
Mode
Digital MIC I/F
No
Yes
Output Volume
+36dB ∼ -54dB, 0.375dB Step(Note 1) +36dB ∼ -54dB, 0.375dB Step (Note 1) &
& 0dB ∼ -18dB, 6dB Step
0dB ∼ -18dB, 6dB Step &
+0dB ∼ -48.13dB, 256 Linear Step
MIN Input Gain Setting
External Resistor
External Resistor/Internal VOL
MIN Feedback Resistance
typ. 20kΩ
typ. 33kΩ
Piezo Speaker Support
μP I/F
Yes
3-Wire Serial (Write/Read)
No
3-Wire Serial (Write/Read) + I²C
Audio I/F
No
Yes
DAC 24 bit LSB justified
Master Clock frequency for 12MHz, 13.5MHz, 24MHz, 27MHz 11.2896MHz, 12MHz, 13.5MHz,
PLL Mode
24MHz, 27MHz
Package
EN: 32QFN (5x5mm, 0.5mm pitch) 29 pin CSP (3x3.3mm, 0.5mm pitch)
EZ: 32QFN (4x4mm, 0.4mm pitch)
Note 1. ALC and Volume circuits are shared by input and output. Therefore, it is impossible to use ALC and Volume
function at the same time for both recording and playback mode.
MS1023-E-01
-4-
2010/08