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