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PDF AK4953A Data sheet ( Hoja de datos )
| Número de pieza | AK4953A | |
| Descripción | 24bit Stereo CODEC | |
| Fabricantes | AKM | |
| Logotipo |  |
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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
1 page  
[AK4953A]
PIN/FUNCTION
No. Pin Name
I/O Function
1 MPWR1
2
LIN1
DMDAT
3
RIN1
DMCLK
O MIC Power Supply Pin for Microphone 1
I Lch Analog Input 1 Pin
I Digital Microphone Data Input Pin
I Rch Analog Input 1 Pin
O Digital Microphone Clock pin
(DMIC bit = “0”)
(DMIC bit = “1”)
(DMIC bit = “0”)
(DMIC bit = “1”)
4 PDN
Power-down & Reset
I When “L”, the AK4953A is in power-down mode and is held in reset.
CSN
5 SDA
6
CCLK
SCL
7 CDTIO
CAD0
The AK4953A must be always reset upon power-up.
I Chip Select Pin
(I2C pin = “L”)
I/O Control Data Input/Output Pin
(I2C pin = “H”)
I Control Data Clock Pin
(I2C pin = “L”)
I Control Data Clock Pin
(I2C pin = “H”)
I/O Control Data Input/Output Pin
(I2C pin = “L”)
I Chip Address Select Pin
(I2C pin = “H”)
8 SDTI
I Audio Serial Data Input Pin
9 LRCK
I/O Input/Output Channel Clock Pin
10 BICK
I/O Audio Serial Data Clock Pin
11 SDTO
O Audio Serial Data Output Pin
12 TVDD
- Digital I/O Power Supply Pin, 1.6 ~ 3.5V
13 VSS2
- Ground 2 Pin
14 MCKI
I External Master Clock Input Pin
15 MCKO
16 I2C
O Master Clock Output Pin
I Control Mode Select Pin “H”: I2C Bus, “L”: 3-wire Serial
17 SVDD
- Speaker-Amp Power Supply Pin, 0.9 ~ 5.5V
18 VSS4
- Ground 4 Pin
19 SPN
O Speaker-Amp Negative Output Pin
20 SPP
O Speaker-Amp Positive Output Pin
21 DVDD
- Digital Power Supply Pin, 1.6 ~ 2.0V
22 HPL
O Lch Headphone-Amp Output Pin
23 HPR
O Rch Headphone-Amp Output Pin
24 PVEE
O
Charge-Pump Circuit Negative Voltage Output Pin
This pin must be connected to VSS3 with 2.2μF±50% capacitor in series.
25 VSS3
- Ground 3 Pin
26 CP
O
Positive Charge-Pump Capacitor Terminal Pin
This pin must be connected to CN pin with 2.2μF±50% capacitor in series.
27 CN
I
Negative Charge-Pump Capacitor Terminal Pin
This pin must be connected to CP pin with 2.2μF±50% capacitor in series.
28 AVDD
- Analog Power Supply Pin, 2.85 ~ 3.5V
29 VSS1
- Ground 1 Pin
30 REGFIL
O
Regulator Ripple Filter Pin
This pin must be connected to VSS1 with 2.2μF±50% capacitor in series.
Common Voltage Output Pin
31 VCOM
O Bias voltage of ADC inputs and DAC outputs.
This pin must be connected to VSS1 with 2.2μF±50% capacitor in series.
32 LIN3
I Lch Analog Input 3 Pin
33 RIN3
I Rch Analog Input 3 Pin
34 LIN2
I Lch Analog Input 2 pin
35 RIN2
I Rch Analog Input 2 Pin
36 MPWR2
O MIC Power Supply Pin for Microphone 2
Note 2. All input pins except analog input pins (LIN1, RIN1, LIN2, RIN2, LIN3, RIN3) must not be left floating.
MS1252-E-05
-5-
2015/10
5 Page 
[AK4953A]
■ Power Consumption on Each Operation Mode
Conditions: Ta=25C; AVDD=TVDD=SVDD=3.3V, DVDD=1.8V; VSS1=VSS2=VSS3=VSS4=0V; fs=44.1kHz,
External Slave Mode, BICK=64fs; 1kHz, 0dBFS input; Headphone & Speaker = No output.
Power Management Bit
Mode
AVDD DVDD TVDD SVDD Total Power
[mA] [mA] [mA] [mA]
[mW]
All Power-down
LIN1/RIN1 → ADC
LIN1 (Mono) → ADC
DAC → HP
DAC → SPK
LIN1/RIN1 → ADC
& DAC → HP
LIN1/RIN1 → ADC
& DAC → SPK
0000000
0
0
0
1 0 0 1 1 0 0 2.2 1.0 0.1
1 0 0 1 0 0 0 1.5 1.0 0.1
1 0 1 0 0 1 1 2.5
1.1
0
1 1 1 0 0 0 0 1.8
0.7
0
1 0 1 1 1 1 1 3.9 1.8 0.1
1 1 1 1 1 0 0 3.1 1.4 0.1
Table 1. Power Consumption on Each Operation Mode (typ)
0
0
0
0
1.3
0
1.3
0
9.4
7.1
10.2
11.5
16.4
17.4
MS1252-E-05
- 11 -
2015/10
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK4953A.PDF ] | |
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