AK4145 データシートの表示（PDF） - Asahi Kasei Microdevices

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AK4145

Digital BTSC Stereo Encoder

Asahi Kasei Microdevices 

[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

P/S

PDN

FS1/SDA

DIF/SCL

LRCK

BICK

SDTI

µP

Interface

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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