| A/V
Switch |
| AK4709 |
| Cap-less AV SCART Switch with Volume and Video Filter |
| The AK4709 is an I2C controlled audio and video switch which has a matrix designed architecture for digital TV and set-top-box applications. The AK4709 offers the ideal features for digital set-top-box systems. The AK4709 includes audio switches, video switches, and video filters. The integrated audio driver supports ground referenced outputs, eliminating the need for large AC-coupling capacitors, reducing cost and saving board space. The AK4709 is housed in a space saving small 48-pin LQFP package. |
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- Applications: Digital STBs, DVRs
- Analog Switches for SCART
 Audio section
THD+N: ~92dB (@2Vrms)
Dynamic Range: 99dB (@2Vrms), (A-weighted)
· Stereo Analog Volume with Pop-noise Free Circuit (+6dB to –60dB & Mute)
· Analog Inputs
One Full Differential Stereo Input or Single-ended input for Decoder DAC
Two Stereo Input (TV & VCR SCART)
· Analog Outputs
Two Stereo Outputs (TV & VCR SCART)
· Ground-Referenced Outputs Eliminate DC-Blocking Capacitor
Video section
· Integrated LPF: ~40dB@27MHz
· 75ohm driver
· 6dB Gain for Outputs
· Four CVBS/Y inputs (ENCx2, TV, VCR), Two CVBS/Y outputs (TV, VCR)
· Three R/C inputs (ENCx2, VCR), Two R/C output (TV, VCR)
· Two G and B inputs (ENC, VCR), One G and B outputs (TV)
· Bi-Directional Control for VCR-Red/Chroma
· Y/Pb/Pr Option (to 6MHz)
TV/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
· 3.3V+/~5% and 12V+/~10%
· Low Power Dissipation / Low Power Standby Mode
- Package
· Small 48pin LQFP
- Evaluation Board: AKD4709
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PDF
Download |
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Data Sheets
Rev. MS1319-E-00 2011/07
PDF : 599KB / 42pages
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Evaluation Board Manual
Rev. KM103002 2011/06
PDF : 1526KB / 28pages |
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Audio Block
Video Block
Video Blanking Block
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| AK4709 BLOCK DIAGRAM |
