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PDF AK4958 Data sheet ( Hoja de datos )
| Número de pieza | AK4958 | |
| Descripción | 24bit Stereo CODEC | |
| Fabricantes | AKM | |
| Logotipo |  |
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[AK4958]
AK4958
24bit Stereo CODEC with MIC/SPK/VIDEO-AMP & LDO
GENERAL DESCRIPTION
The AK4958 is a 24-bit stereo CODEC with a microphone, speaker, video amplifiers and LDO. The input
circuits include a microphone amplifier and the output circuits include a speaker amplifier. It is suitable for
portable application with recording/playback function. A one channel composite In/Out video amplifier is
also integrated. The AK4958 is available in a small 32-pin BGA (3.5mm x 3.5mm, 0.5mm pitch:
AK4958EG) and a 25-pin CSP (2.2mm x 2.2mm, 0.4mm pitch: AK4958ECB) packages saving mounting
area on the board.
FEATURES
1. Recording Functions
Analog Input
(AK4958EG)
Stereo Single-ended input with two Selectors
(AK4958ECB)
Stereo Single-ended input
Microphone Amplifier
(+30dB, +25dB, +21dB, +18dB, +15dB, +12dB, +6dB, 0dB)
Digital ALC (Automatic Level Control)
- Setting Range: +36dB 52.5dB, 0.375dB Step & Mute
- Motor Noise Reduction Circuit
ADC Performance: S/(N+D): 83dB, DR, S/N: 88dB (MIC-Amp=+18dB)
S/(N+D): 85dB, DR, S/N: 96dB (MIC-Amp=0dB)
Microphone Sensitivity Compensation (with Moving Average Data Output Circuit)
Automatic Wind Noise Reduction Filter
5-Band Notch Filter
Include Dynamic Gain Control
Stereo Separation Emphasis Circuit
Digital Microphone Interface
2. Playback Functions
Soft Mute
Digital ALC (Automatic Level Control)
- Setting Range: +36dB ~ 52.5dB, 0.375dB Step & Mute
Digital Volume Control
- +6dB ~ 89.5dB, 0.5dB Step & Mute)
Stereo Separation Emphasis Circuit
Stereo Line Output
- Output Voltage: 1Vrms (AVDD= 3.3V)
- S/(N+D): 85dB
- S/N: 92dB
Mono Mixing Output
Mono Speaker-Amplifier
- S/(N+D): 65dB@150mW, 60dB@250mW,
- S/N: 90dB
- BTL Output
- Output Power: 400mW@8 (AVDD=3.3V)
Analog Mixing: BEEP Input
Bass Boost Circuit
3-band Dynamic Range Control Circuit
MS1558-E-01-PB
-1-
2013/10
http://www.Datasheet4U.com
1 page  
■ Ordering Guide
AK4958EG
AK4958ECB
AKD4958EG
AKD4958ECB
30 +85C
32-pin BGA (0.5mm pitch)
30 +85C
25-pin CSP (0.4mm pitch)
Evaluation board for AK4958EG
Evaluation board for AK4958ECB
■ Pin Layout
▪ AK4958EG
6
5
4
Top View
3
2
1
A BCD E F
[AK4958]
6
MPWR
ROUT REGFIL VCOM
VSS1
VIN
5
RIN2
BEEP
LOUT
AVDD
VOUT
VSS4
4
RIN1
/DMCLK
LIN2
SPP
SPN
3
LIN1
/DMDAT
I2C
VSS2
VSS3
2
CDTIO
/CAD0
CSN
/SDA
SDTI
MCKO
MCKI
DVDD
1
CCLK
/SCL
LRCK
BICK
SDTO
TVDD
PDN
A BCDEF
Top View
MS1558-E-01-PB
-5-
2013/10
5 Page 
[AK4958]
■ Handling of Unused Pin
Unused I/O pins must be processed appropriately as below.
Classification Pin Name
MPWR, SPN, SPP, LOUT, ROUT, BEEP, RIN2,
Analog
LIN2, VIN, VOUT
LIN1, RIN1
Digital
MCKO, SDTO
MCKI, SDTI
LRCK, BICK
Setting
These pins must be open.
DMIC bit = “0”, and
these pins must be open.
These pins must be open.
These pins must be connected to VSS2.
M/S bit = “0”, and
these pins must be connected to VSS2.
MS1558-E-01-PB
- 11 -
2013/10
11 Page | ||
| Páginas | Total 35 Páginas | |
| PDF Descargar | [ Datasheet AK4958.PDF ] | |
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