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AK4145 Encoder Datasheet |
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| Part Number | AK4145 |
| Description | Digital BTSC Stereo Encoder |
| Manufacture | Asahi Kasei Microsystems |
| Total Page | 11 Pages |
| PDF Download |
[AK4145]
= Preliminary =
AK4145
Digital BTSC Stereo Encoder
GENERAL DESCRIPTION
The AK4145 is a BTSC Encoder with D/A Converter, which is optimized for Digital AV application. The
AK4145 achieves high audio performance using the digital BTSC encoding architecture requires no
alignment of external parts. The AK4145 supports major audio data formats (MSB justified, I2S, TDM) to
interface with usual DSP. Therefore, the AK4145 is suitable for the systems such as Digital STB/TV,
digital recorder.
FEATURES
Alignment Free Digital BTSC Stereo Encoding
Base band Composite Audio Output (Mono/Stereo)
Digital Volume for Composite Audio Output
Digital De-emphasis filter (32k/44.1k/48kHz)
Stereo Digital Volume Control for Audio Input Data
Soft Mute
Sampling Rate (fs): 32k/44.1k/48kHz
Master Clock: 256fs/384fs/512fs/768fs
I/F format: 24-Bit MSB justified, 24/20/16-Bit LSB justified or I2S
Control: Standalone/I2C-bus Selectable
Video Input for Pilot Synchronization
S/(N+D): 0.01%
S/N: 82dB
Channel Separation: 47dB
Power Supply: 1.7V ~ 1.9V, 2.7 ~ 3.6V
Ta: -20 ~ 85°C
www.DataSheet4U.com
FS1/SDA
DIF/SCL
P/S
µP
Interface
PDN
LRCK
BICK
SDTI
Audio
Data
Interface
De-emphasis,
DVOL,
Stereo Matrix
MCLK
PLL
Digital
BTSC
Encoder
FILT
DATT
DAC
Sync
separator
TVDD
DVDD
VSS
VCOM
AVDD
CA
CV/27M
Rev. 0.3-PB
-1-
2007/12
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■ Ordering Guide
AK4145ET
AKD4145
■ Pin Layout
-20 ∼ +85°C
Evaluation Board
FILT
PSN
CV27M
PDN
MCLK
LRCK
BICK
SDTI
1
2
3
4
5
6
7
8
16pinTSSOP
Top
View
16
15
14
13
12
11
10
9
CA
AVDD
VCOM
VSS
DVDD
TVDD
DIF/SCL
FS/SDA
[AK4145]
www.DataSheet4U.com
Rev. 0.3-PB
-2-
2007/12
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| Features | [AK4145] = Preliminary = AK4145 Digit al BTSC Stereo Encoder GENERAL DESCRIPT ION The AK4145 is a BTSC Encoder with D /A Converter, which is optimized for Di gital AV application. The AK4145 achiev es high audio performance using the dig ital BTSC encoding architecture require s no alignment of external parts. The A K4145 supports major audio data formats (MSB justified, I2S, TDM) to interface with usual DSP. Therefore, the AK4145 is suitable for the systems such as Dig ital STB/TV, digital recorder. FEATURES Alignment Free Digital BTSC Stereo Encoding Base band Composite Audio O utput (Mono/Stereo) Digital Volume f or Composite Audio Output Digital De -emphasis filter (32k/44.1k/48kHz) S tereo Digital Volume Control for Audio Input Data Soft Mute Sampling Rat e (fs): 32k/44.1k/48kHz Master Clock : 256fs/384fs/512fs/768fs I/F format : 24-Bit MSB justified, 24/20/16-Bit LS B justified or I2S Control: Standalo ne/I2C-bus Selectable Video Input for Pilot Synchronization S/(N+D): . |
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