AK4145 Datasheet, PDF (1/27 Pages) Asahi Kasei Microsystems – Digital BTSC Stereo Encoder

[AK4145]
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 a digital BTSC encoding architecture which 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
† Stereo Matrix Control
† 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
MS0982-E-01
-1-
2010/09