AK4953A Datasheet, PDF (4/96 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/HP/SPK-AMP

[AK4953A]
■ Comparison with AK4645
Function
AK4645
AK4953A
Resolution
16bit
24bit
AVDD
2.6V ∼ 3.6V
2.85V ∼ 3.5V
DVDD
2.6V ∼ 3.6V
1.6V ~ 2.0V
HVDD
2.6V ∼ 5.25V
-
SVDD
-
0.9V ∼ 5.5V
TVDD
1.6V ~ 3.6V
DVDD ∼ 3.5V
ADC DR, S/N
86dB @ MGAIN = +20dB
88dB @ MGAIN = +20dB
95dB @ MGAIN = 0dB
96dB @ MGAIN = 0dB
DAC S/N
92dB
96dB
Input level
typ. 0.6 x AVDD @ MIC Gain=0dB typ. 2.4Vpp @ MIC Gain=0dB
Output level (Headphone)
typ. 0.6 x AVDD @LOVL=0dB
typ. 1.75Vpp @ DVOL=0dB
ADC Input Selector
4 Stereo
3 Stereo
MIC Power Output Voltage 0.8 x AVDD
typ 2.3V (2 Line Outputs)
MIC-Amp
0dB/+20dB/+26dB/+32dB
0dB/+12dB/+16dB/+20dB/+23dB/
+26dB/+29dB
Digital MIC I/F
No
Yes
HPF(HPF1) after ADC
Fixed (fc = 0.9Hz)
4 frequencies
(fc = 3.4Hz/13.6Hz/108.8Hz/217.6Hz
@ fs=44.1kHz)
Notch Filter
No
5 Step (4 Step + 1 Step)
Stereo Emphasis
Yes
No
Output Volume
+36dB ∼ -54dB, 0.375dB Step (Note 1) +36dB ∼ -54dB, 0.375dB Step (Note 1)
& +12dB ∼ -115dB, 0.5dB Step
& +12dB ∼ -115dB, 0.5dB Step
Speaker-Amp
No
Yes
Master Clock Reference for 11.2896MHz, 12MHz, 12.288MHz, 11.2896MHz, 12MHz, 13.5MHz,
PLL Mode
13.5MHz, 24MHz, 27MHz
24MHz, 27MHz
External Clock Mode
256fs, 512fs, 1024fs
256fs, 384fs, 512fs, 1024fs
Master Clock
Power Supply Current
(Stereo Recording) typ. 7.3mA
typ. 3.3mA
(Headphone Playback) typ. 10.6mA
typ. 3.6mA
Package
32QFN (4 x 4mm, 0.4mm pitch)
36QFN (5 x 5mm, 0.4mm pitch)
Note 1. ALC and Volume circuits are shared by input and output. Therefore, it is impossible to use ALC and Volume
control function at the same time for both recording and playback mode.
■ Compatibility with AK4953
1. Function
Function
Headphone Hi-Z Mode
AK4953
No
2. Register
Addr
Bit
05H
D2
AK4953
0 (Pull-down by 10Ω)
AK4953A
Yes
AK4953A
0: Pull-down by 10Ω (Default)
1: Hi-Z
MS1252-E-00
-4-
2010/10