THC7984 Datasheet, PDF (1/45 Pages) THine Electronics, Inc. – 10-bit 3-channel Video Signal Digitizer

THC7984_Rev.2.0_E
THC7984
10-bit 3-channel Video Signal Digitizer
General Description
The THC7984 integrates all the functions to digitize
analog video signals on a single chip.
Acceptable Signals
PC Graphics (RGB) : VGA-UXGA
- Separate Sync
- Composite Sync
- Sync on Green
Component Video (YPbPr) :
- SDTV (480i / 480p) 2-level Sync
- HDTV (1080i / 720p / 1080p) 3-level Sync
- Protection Signal
Applications
LCD TV / PDP TV
Rear-Projection TV
LCD Display / PDP Display
Front Projector etc.
Features
170 MSPS 10-bit ADC
- Internal 14-bit ADCs
- Oversampling functions (2x, 4x, and 8x)
Line-locked PLL with low jitter
- Phase adjustment: 64 steps
Fine clamp / preamp
- Pedestal / center clamp
- Clamp level auto adjust
- Very low gain mismatch
- Gain adjustment: 2048 steps
Video Filter (LPF)
- Bandwidth adjustment: 28 steps (6MHz - 310MHz)
Sync Processor
- 2-level / 3-level sync slicer
- Advanced sync detection / measurement
- Automatic sync processing mode
- IRQ Output
2-wire serial interface
LQFP 80-pin package
RAIN0
RAIN1
GAIN0
GAIN1
BAIN0
BAIN1
SOGIN0
SOGIN1
HSYNC0
HSYNC1
VSYNC0
VSYNC1
EXTCLK/COAST
CLAMP
FILT
2:1
Switch
Block Diagram
Auto Clamp
Level Adjust
Clamp
PGA
LPF
ADC
Auto Clamp
Level Adjust
2:1
Switch
Clamp
PGA
LPF
ADC
2:1
Switch
Auto Clamp
Level Adjust
Clamp
PGA
LPF
ADC
SOG
Slicer
SYNC
Processing
&
Clock
Generation
Serial I/F
Control
Decimation
Filter ^10-bit
&
Output
Formatter
10-bit
RED0-9
GREEN0-9
10-bit
BLUE0-9
DATACK
SOGOUT
O/E FIELD
HSOUT
VSOUT/A0
Voltage
Reference
REFHI
REFCM
REFLO
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