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AK4953A Datasheet Preview

AK4953A Datasheet

24bit Stereo CODEC

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[AK4953A]
AK4953A
24bit Stereo CODEC with MIC/HP/SPK-AMP
GENERAL DESCRIPTION
The AK4953A is a low power consumption 24bit stereo CODEC with a microphone, headphone and
speaker amplifiers. The input circuits include a microphone amplifier and an ALC (Automatic Level
Control) circuit, and the output circuits include a cap-less headphone amplifier and a speaker amplifier. It
is suitable for portable application with recording/playback function. The integrated charge pump circuit
generates a negative voltage and removes the output AC coupling capacitors. The speaker amplifier has
a wide operating voltage range, which is from 0.9V to 5.5V, enabling a direct drive to batteries. The
AK4953A is available in a small 36-pin QFN (5x5mm 0.4mm pitch), utilizing less board space than
competitive offerings.
FEATURES
1. Recording Function
Stereo Single-ended input with three Selectors
MIC Amplifier (+29dB/+26dB/+23dB/+20dB/+16dB/+12dB/0dB)
Digital ALC (Automatic Level Control)
(Setting Range: +36dB  54dB, 0.375dB Step)
ADC Performance: S/(N+D): 82dB, DR, S/N: 88dB (MIC-Amp=+20dB)
S/(N+D): 85dB, DR, S/N: 96dB (MIC-Amp=0dB)
Wind-noise Reduction Filter
5 Band Notch Filter
Digital MIC Interface
2. Playback Function
Digital De-emphasis Filter (tc=50/15s, fs=32kHz, 44.1kHz, 48kHz)
Digital ALC (Automatic Level Control)
(Setting Range: +36dB ~ 54dB, 0.375dB Step)
Digital Volume Control (+12dB ~ 115dB, 0.5dB Step, Mute)
Capacitor-less Stereo Headphone Amplifier
- HP-Amp Performance: S/(N+D): 80dB@24mW, S/N: 96dB
- Output Power: 24mW@16
- Pop Noise Free at Power-ON/OFF
Mono Speaker-Amplifier
- SPK-Amp Performance: S/(N+D): 70dB@250mW, S/N: 95dB
- BTL Output
- Output Power: 400mW@8(SVDD=3.3V)
100mW@8(SVDD=1.5V)
Beep Generator
3. Power Management
4. Master Clock:
(1) PLL Mode
Frequencies: 11.2896MHz, 12MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin)
32fs or 64fs (BICK pin)
(2) External Clock Mode
Frequencies: 256fs, 384fs, 512fs or 1024fs (MCKI pin)
MS1252-E-05
-1-
2015/10




AKM

AK4953A Datasheet Preview

AK4953A Datasheet

24bit Stereo CODEC

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[AK4953A]
5. Output Master Clock Frequencies: 32fs/64fs/128fs/256fs
PLL Slave Mode (BICK pin): 7.35kHz 96kHz
PLL Slave Mode (MCKI pin): 7.35kHz, 8kHz, 11.025kHz, 12kHz, 14.7kHz, 16kHz,
22.05kHz, 24kHz, 29.4kHz, 32kHz, 44.1kHz, 48kHz,
64kHz, 88.2kHz, 96kHz
PLL Master Mode: 7.35kHz, 8kHz, 11.025kHz, 12kHz, 14.7kHz, 16kHz, 22.05kHz,
24kHz, 29.4kHz, 32kHz, 44.1kHz, 48kHz, 64kHz, 88.2kHz,
96kHz
EXT Master/Slave Mode: 7.35kHz ~ 96kHz (256fs), 7.35kHz ~ 48kHz (384fs),
7.35kHz ~ 48kHz (512fs), 7.35kHz ~ 12kHz (1024fs)
6. P I/F: 3-wire Serial, I2C Bus (Ver 1.0, 400kHz Fast-Mode)
7. Master/Slave mode
8. Audio Interface Format: MSB First, 2’s complement
ADC: 24bit MSB justified, 16/24bit I2S
DAC: 24bit MSB justified, 16bit LSB justified, 24bit LSB justified, 16/24bit I2S
9. Ta = 30 85C (SPK-Amp = OFF)
Ta = 30 70C (SPK-Amp = ON)
10. Power Supply:
Analog Power Supply (AVDD): 2.85 ~ 3.5V
Digital Power Supply (DVDD): 1.6 ~ 2.0V
Digital I/O Power Supply (TVDD): DVDD ~ 3.5V
Speaker Power Supply (SVDD): 0.9 ~ 5.5V
11. Package: 36-pin QFN (5 x 5mm, 0.4mm pitch)
Block Diagram
AVDD VSS1 REGFIL VCOM
DVDD TVDD VSS2
MPWR2
MPWR1
Internal
MIC
External
MIC
LIN1/DDAT
RIN1/DMCLK
LIN2
RIN2
Line In
LIN3
RIN3
Speaker
SVDD
VSS4
SPP
SPN
Cap-less
Headphone
HPL
HPR
CP
CN
PMMP
MIC Power
Supply
PMADL
PMVCM
LDO
+2.5V
Analog Block
Charge pump
Control
Register
PMADR
MIC-Amp
PMSPK
Class-AB
SPK-AMP
PMHPL
PMHPR
PMHPL or PMHPR
Charge
Pump
PMADL or PMADR
ADC HPF1
PMBP
Beep
Generator
PMPFIL
HPF2
LPF
4-band EQ
ALC
1-band EQ
SDTI
Audio
I/F
SDTO
PMDAC
DAC
DVL/R DEM
SMUTE
PMPLL
PLL
AVDD
I2C
CSN/SDA
CCLK/SCL
CDTIO/CAD0
PDN
BICK
LRCK
SDTI
SDTO
MCKO
MCKI
PVEE VSS3
Figure 1. Block Diagram
MS1252-E-05
-2-
2015/10


Part Number AK4953A
Description 24bit Stereo CODEC
Maker AKM
Total Page 30 Pages
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