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PDF AK4634 Data sheet ( Hoja de datos )
| Número de pieza | AK4634 | |
| Descripción | 16-Bit Mono CODEC | |
| Fabricantes | AKM | |
| Logotipo |  |
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[AK4634]
AK4634
16-Bit Mono CODEC with ALC & MIC/SPK -AMP
GENERAL DESCRIPTION
The AK4634 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 AK4634 is suitable for a moving picture of Digital Still
Camera and etc. This speaker-Amplifier supports a Piezo Speaker. The AK4634 is housed in a
space-saving 32-pin QFN 5mm x 5mm package and 29-pin CSP 2.5mm x 3mm package.
FEATURE
1. 16-Bit Delta-Sigma Mono CODEC
2. Recording Function
1ch Mono Input
MIC Amplifier: (0dB/+3dB/+6dB/+10dB/ +17dB/+20dB/+23dB/+26dB/+29dB/+32dB)
Digital ALC (Automatic Level Control)
(+36dB -54dB, 0.375dB Step, Mute)
ADC Performance (MIC-Amp=+20dB)
- S/(N+D): 84dB
- DR, S/N: 86dB
Wind-noise Reduction Filter
5 band notch Filter
3. Playback Function
Digital ALC (Automatic Level Control)
(+36dB -54dB, 0.375dB Step, Mute)
Mono Line Output: S/(N+D): 85dB, S/N: 93dB
Mono Class-D Speaker-Amp
- BTL Output
- Output Power: 400mW @ 8 (SVDD=3.3V)
- S/(N+D): 55dB (150mW@8)
Beep Generator
4. Power Management
5. PLL Mode:
Frequencies:
12MHz, 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
MS0686-E-03
-1-
2014/10
1 page  
■ Compatibility with AK4633
1. Function
Function
MIC-Amp
Single End of Analog Input
LPF
Notch Filter ( Equalizer)
SPK-Amp
ALC Recovery Waiting Period
Master Clock Mode
PLL Mode Frequency
BEEP Output
Control Interface
Package
[AK4634]
AK4633
0dB/+6dB/+10dB/+14dB
+17dB/+20dB/+26dB/+32dB
1ch (MIC pin)
Not Available
2 band
Class-AB
4 steps
(128fs ~ 1024fs)
11.2896MHz, 12MHz,
12.288MHz, 13.5MHz
24MHz, 27MHz
Analog Input
3-wire
24pin QFN: 4.0mm x 4.0mm
AK4634
0dB/+3dB/+6dB/+10dB/+17dB/
+20dB/+23dB/+26dB/+29dB/
+32dB
2ch (MIC pin / LIN pin)
Available
5 band
Class-D
8 steps
(128fs ~ 16384fs)
12MHz, 13.5MHz, 24MHz,
27MHz
Generator circuit Included
3-wire, I2C
32pin QFN : 5mm x 5mm
29 pin CSP:2.5mm x 3.0mm
MS0686-E-03
-5-
2014/10
5 Page 
[AK4634]
FILTER CHRACTERISTICS
(Ta = Tmin ~ Tmax; AVDD = 2.8 3.6V; DVDD = 1.6 3.6V, SVDD = 2.2 4.0V; fs=8kHz)
Parameter
Symbol
min
typ
max Unit
ADC Digital Filter (Decimation LPF):
Passband
(Note 18) 0.16dB
PB
0
- 3.0 kHz
0.66dB
- 3.5 - kHz
1.1dB
- 3.6 - kHz
6.9dB
- 4.0 - kHz
Stopband
(Note 18)
SB 4.7
-
- kHz
Passband Ripple
PR -
- 0.1 dB
Stopband Attenuation
SA 73
-
- dB
Group Delay
(Note 19)
GD - 16 - 1/fs
Group Delay Distortion
GD
-
0
- s
DAC Digital Filter (Decimation LPF):
Passband
(Note 18) 0.16dB
PB
0
- 3.0
0.54dB
1.0dB
-
-
3.5
3.6
-
-
dB
6.7dB
- 4.0 -
Stopband
(Note 18)
SB 4.7
-
- kHz
Passband Ripple
PR -
- 0.1 dB
Stopband Attenuation
SA 73
-
- dB
Group Delay
(Note 19)
GD - 16 - 1/fs
Group Delay Distortion
GD
-
0
- s
DAC Digital Filter + Analog Filter:
Frequency Response: 0 3.4kHz
FR - 1.0 - dB
Note 18. The passband and stopband frequencies are proportional to fs (system sampling rate).
For example, ADC of PB = 3.6kHz is 0.45*fs (@ 1.0dB). A reference of frequency response is 1kHz.
Note 19. The calculated delay time caused by digital filtering. This time is from the input of analog signal to setting of the
16-bit data of a channel from the input register to the output register of the ADC. For the DAC, this time is from
setting the 16-bit data of a channel from the input register to the output of analog signal. When there is not a phase
change with the IIR filter, group delay of the programmable filter (primary HPF + primary LPF + 5-band
Equalizer + ALC) increases for 2/fs than a value of an above mention.
DC CHRACTERISTICS
(Ta = Tmin ~ Tmax; AVDD = 2.8 3.6V, DVDD = 1.6 3.6V, SVDD = 2.2 4.0V)
Parameter
Symbol
min
typ
High-Level Input Voltage
(DVDD ≥ 2.2V)
VIH 70%DVDD
-
Low-Level Input Voltage
(DVDD < 2.2V)
(DVDD ≥ 2.2V)
80%DVDD
VIL -
-
-
(DVDD < 2.2V)
--
High-Level Output Voltage
(Iout = 80A)
VOH DVDD0.2
-
Low-Level Output Voltage
(Except SDA pin: Iout = 80A) VOL1
-
-
(SDA pin, 2.0V DVDD 3.6V: Iout = 3mA) VOL2
-
-
(SDA pin, 1.6V DVDD < 2.0V: Iout = 3mA) VOL2
-
-
Input Leakage Current
Iin -
-
max
-
-
30%DVDD
20%DVDD
-
0.2
0.4
20%DVDD
10
Unit
V
V
V
V
V
V
V
A
MS0686-E-03
- 11 -
2014/10
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK4634.PDF ] | |
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