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首页 > 混合信号集成电路 > 视频和音频/视频开关 > 音频/视频开关 > AK4704
AK4704
AV SCART开关配有音频DAC、音量及视频滤波器
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- 2ch Audio DAC
 - Sampling Rates Ranging from 8kHz to 50kHz
- 64dB High Attenuation FIR Digital Filter
- 2nd order Analog LPF
- On chip Buffer with Single-ended Output
- Digital de-emphasis for 32k, 44.1k and 48kHz sampling
- I/F format: 24bit MSB justified, 18/16bit LSB justified, I2S
- Master clock: 256fs, 384fs
- High Tolerance to Clock Jitter
- Analog switches for SCART
Audio section
- THD+N: -86dB (@2Vrms)
- Dynamic Range: 96dB (@2Vrms)
- Stereo Analog Volume with Zero-cross Detection Circuit
(+6dB to –60dB & Mute)
- Six Analog Inputs:
Two Stereo Inputs (TV, VCR SCART)
One Stereo Input (changeover to internal DAC)
- Five Analog Outputs:
Two Stereo Outputs (TV, VCR SCART)
One Mono Output (Modulator)
- Pop Noise Free Circuit for Power on/off
Video section
- Integrated LPF: -40dB@27MHz
- 75ohm driver
- 6dB Gain for Outputs
- Adjustable gain
- Four CVBS/Y inputs (ENCx2, TV, VCR) &
Three CVBS/Y outputs (RF, TV, VCR)
- Three R/C inputs (ENCx2, VCR) & Two R/C outputs (TV, VCR)
- Bi-directional control for VCR-Chroma/Red
- Two G and B inputs (ENC, VCR) & One G and B outputs (TV)
- Y/C Mixer for RF output
- VCR input monitor
Loop-through mode for standby
Auto-Startup Mode for power saving
- SCART pin#16(Fast Blanking), pin#8(Slow Blanking) Control
- Power supply
- 5V+/-5% and 12V+/-5%
- Low Power Dissipation
- Package
- Small 48pin LQFP
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AK4704 BLOCK DIAGRAM
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