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ASAHI KASEI
www.DataSheet4U.com
[AK4633]
AK4633
16-Bit ∆Σ Mono CODEC with ALC & MIC/SPK-AMP
GENERAL DESCRIPTION
The AK4633 is a 16-bit mono CODEC with Microphone-Amplifier and Speaker-Amplifier. Input circuits
include a Microphone-Amplifier and an ALC (Automatic Level Control) circuit. Output circuits include a
Speaker-Amplifier and Mono Line Output. The AK4633 suits a moving picture of Digital Still Camera and
etc. This speaker-Amplifier supports a Piezo Speaker. The AK4633 is housed in a space-saving 24-pin
QFN package.
FEATURE
1. 16-Bit Delta-Sigma Mono CODEC
2. Recording Function
1ch Mono Input
1st MIC Amplifier: 0dB, 6dB, 10dB, 14dB, 17dB, 20dB, 26dB or 32dB
2nd Amplifier with ALC: +36dB -54dB, 0.375dB Step, Mute
ADC Performance (MIC-Amp= +20dB): S/(N+D): 84dB, DR, S/N: 85dB
Wind Noise Reduction
Notch Filter
3. Playback Function
Digital ALC (Automatic Level Control): +36dB -54dB, 0.375dB Step, Mute
Mono Line Output Performance: S/(N+D): 85dB, S/N: 93dB
Mono Speaker-Amp
- Speaker-Amp Performance: S/(N+D): 60dB (150mW@ 8)
Output Noise Level: -87dBV
- BTL Output
- Output Power: 400mW @ 8
Beep Input
4. Power Management
5. Flexible PLL Mode:
Frequencies:
11.2896MHz, 12MHz, 12.288MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin)
1fs (FCK pin)
16fs, 32fs or 64fs (BICK pin)
6. EXT Mode:
Frequencies: 256fs, 512fs or 1024fs (MCKI pin)
7. Sampling Rate:
PLL Slave Mode (FCK pin) : 7.35kHz ~ 48kHz
PLL Slave Mode (BICK pin) : 7.35kHz ~ 48kHz
PLL Slave Mode (MCKI pin):
8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz
PLL Master Mode:
8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz
EXT Slave Mode/EXT Master Mode:
7.35kHz~ 48kHz (256fs), 7.35kHz ~ 26kHz (512fs), 7.35kHz ~ 13kHz (1024fs)
8. Output Master Clock Frequency: 256fs
9. Serial µP Interface: 3-wire
10. Master / Slave Mode
MS0447-E-03
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ASAHI KASEI
11. Audio Interface Format: MSB First, 2’s compliment
ADC: DSP Mode, 16bit MSB justified, I2S
DAC: DSP Mode, 16bit MSB justified, 16bit LSB justified, I2S
12. Ta = -40 85°C
13. Power Supply
AVDD: 2.2 3.6V (typ. 3.3V)
DVDD: 1.6 3.6V (typ. 3.3V)
SVDD: 2.2 4.0V (typ. 3.3V)
14. Power Supply Current: 12mA (All Power ON)
15. Package: 24pin QFN(4mmx4mm)
„ Block Diagram
MPI
MIC/MICP
Mic
Line Out
Speaker
AOUT
SPP
SPN
AVDD
PMMP
MIC Power
Supply
AVSS VCOM
DVDD
PMADC
MIC-Amp
0dB /+6dB/+10dB/+14dB/+17dB
+20dB / +26dB / +32dB
A/D
HPF
PMAO
PMPFIL
HPF
2 Band
EQ
VOL
(ALC)
DVSS
Audio
I/F
PMSPK
PMDAC
D/A
PMPLL
PLL
[AK4633]
PDN
BICK
FCK
SDTO
SDTI
MCKO
MCKI
VCOC
PMBP
SVDD
SVSS
BEEP/MICN
Figure 1. AK4633 Block Diagram
Control
Register
CSN
CCLK
CDTI
MS0447-E-03
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ASAHI KASEI
„ Ordering Guide
AK4633VN
AKD4633
„ Pin Layout
40 +85°C
24pin QFN (0.5mm pitch)
Evaluation board for AK4633
[AK4633]
SVSS
SVDD
AOUT
BEEP/MICN
MPI
MIC/MICP
19
20
21
22
23
24
AK4633VN
Top View
12 BICK
11 FCK
10 SDTO
9 SDTI
8 CDTI
7 CCLK
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ASAHI KASEI
[AK4633]
„ Interchange with AK4631
1. Function
Function
AK4631
AK4633
AVDD
DVDD
2.6V 3.6V
2.6V 3.6V
2.2V 3.6V
1.6V 3.6V
SVDD
2.6V 5.25V
2.2V 4.0V
MIC Input
Single-end
Single-end / differential
MIC Power Output Voltage
0.75 x AVDD
0.8 x AVDD
MIC-Amp
0dB/+20dB/+26dB/+32dB
0dB/+6dB/+10dB/+14dB
+17dB/+20dB/+26dB/+32dB
HPF for Wind Noise Reduction
No
Yes
Notch Filter
No
Yes
ALC for Input Signal
Analog ALC
Digital ALC (Note 1)
Input Volume
+27.5dB -8dB, 0.5dB Step
+36dB -54dB, 0.375dB Step
(Note 1)
ALC for Output Signal
Speaker-Amp block
Digital Block (Note 1)
Output Volume
+12dB -115dB, 0.5dB Step
+36dB -54dB, 0.375dB Step
(Note 1)
Maximum Output for SPK-Amp 8.5Vpp@SVDD=5V
6.33Vpp@SVDD=3.8V
(using Piezo Speaker)
MCKI Pull-down Resistance
Yes
No (Delete MCKPD bit )
Package
28pin QFN 5.2mm x 5.2mm
24pin QFN 4.0mm x 4.0mm
41pin BGA 4.0mm x 4.0mm
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.
MS0447-E-03
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ASAHI KASEI
[AK4633]
2. Register Map
(1) AK4631
Addr
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
Register Name
Power Management 1
Power Management 2
Signal Select 1
Signal Select 2
Mode Control 1
Mode Control 2
Timer Select
ALC Mode Control 1
ALC Mode Control 2
Input PGA Control
Digital Volume Control
ALC2 Mode Control
D7
0
0
SPPS
0
PLL3
0
DVTM
0
0
0
OVOL7
0
D6
PMVCM
0
BEEPS
AOPSN
PLL2
0
ROTM
ALC2
REF6
IPGA6
OVOL6
0
D5
PMBP
0
ALC2S
MGAIN1
PLL1
FS3
ZTM1
ALC1
REF5
IPGA5
OVOL5
RFS5
D4
PMSPK
0
DACA
SPKG1
PLL0
MSBS
ZTM0
ZELM
REF4
IPGA4
OVOL4
RFS4
D3
PMAO
M/S
DACM
SPKG0
BCKO1
BCKP
WTM1
LMAT1
REF3
IPGA3
OVOL3
RFS3
D2
PMDAC
MCKPD
MPWR
BEEPA
BCKO0
FS2
WTM0
LMAT0
REF2
IPGA2
OVOL2
RFS2
D1
PMMIC
MCKO
MICAD
ALC1M
DIF1
FS1
LTM1
RATT
REF1
IPGA1
OVOL1
RFS1
D0
PMADC
PMPLL
MGAIN0
ALC1A
DIF0
FS0
LTM0
LMTH
REF0
IPGA0
OVOL0
RFS0
(2) AK4633
Addr
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
0DH
0EH
Register Name
Power Management 1
Power Management 2
Signal Select 1
Signal Select 2
Mode Control 1
Mode Control 2
Timer Select
ALC Mode Control 1
ALC Mode Control 2
Digital Volume Control
Digital Volume Control
ALC Mode Control 3
ALC LEVEL
Signal Select 3
10H - 1FH
D7
PMPFIL
0
SPPSN
PFSDO
PLL3
ADRST
0
0
IREF7
IVOL7
OVOL7
RGAIN1
VOL7
DATT1
hatching
Bold
D6 D5 D4 D3
PMVCM PMBP PMSPK PMAO
0 0 0 M/S
BEEPS DACS DACA
0
AOPS MGAIN1 SPKG1 SPKG0
PLL2
PLL1
PLL0 BCKO1
FCKO
FS3
MSBS
BCKP
0
ZTM1
ZTM0
WTM1
ALC2
ALC1 ZELMN LMAT1
IREF6
IREF5
IREF4
IREF3
IVOL6 IVOL5 IVOL4 IVOL3
OVOL6 OVOL5 OVOL4 OVOL3
LMTH1 OREF5 OREF4 OREF3
VOL6 VOL5 VOL4 VOL3
DATT0 SMUTE MDIF
EQ2
Digital Filter Setting
Register bits changed from the AK4631.
Register bits added from the AK4631.
D2
PMDAC
0
PMMP
BEEPA
BCKO0
FS2
WTM0
LMAT0
IREF2
IVOL2
OVOL2
OREF2
VOL2
EQ1
D1
0
MCKO
MGAIN2
PFDAC
DIF1
FS1
RFST1
RGAIN0
IREF1
IVOL1
OVOL1
OREF1
VOL1
HPF
D0
PMADC
PMPLL
MGAIN0
ADCPF
DIF0
FS0
RFST0
LMTH0
IREF0
IVOL0
OVOL0
OREF0
VOL0
HPFAD
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