CH7002D

Features:

• Fully integrated solution for PC to TV display
• TrueScale TM rendering engine supports underscan operation for both 640x480 or 800x600 inputs †
• Advanced 3-line digital flicker filtering with programmable algorithm selections †
• Fully programmable through I2C port or hardware (pin-based) controls
• Wide range of VGA software drivers for full synchronization and image positioning
• Auto-detection of TV presence
• Programmable power management features three power-down modes
• Supports both NTSC and PAL (B, D, G, H, or I) TV formats onto both composite and S-Video
• Triple 8-bit ADC inputs and triple 8-bit DAC outputs
• On-chip reference generation and loop filter
• Offered in 44-pin PLCC package


Pinout




Specifications

Symbol	Description	Min	Typ	Max	Units
	VDD relative to GND	- 0.5		7.0	V
	Input voltage of all digital pins	GND - 0.5		Vdd + 0.5	V
TSC	Analog output short circuit duration		Indefinite		Sec
TAMB	Ambient operating temperature	- 55		70
TSTOR	Storage temperature	- 65		150
TJ	Junction temperature			150
TVPS	Vapor phase soldering (one minute)			220
PMAX	Maximum Power dissipation			1.9	W

Description

Chrontel's CH7002 VGA to NTSC/PAL encoder is a standalone integrated circuit which provides a PC 99 compliant solution for TV output. It accepts RGB analog inputs directly from VGA controllers and converts them directly into NTSC or PAL TV format, with simultaneous composite and S-Video outputs.

CH7002D integrates a digital NTSC/PAL encoder with 8- bit ADC and DAC interfaces, a 3-line vertical filter, and lowjitter phase-locked loop to create outstanding quality video. Through Chrontel's TrueScale TM rendering technology, the CH7002 supports full vertical and horizontal underscan operation from either 640x480 or 800x600 input to either NTSC or PAL outputs.

A high level of performance along with full programmability makes the CH7002 ideal for system-level PC or Web browser solutions. All features are software programmable, through a standard I2C port, to enable fully integrated system solutions by using a TV as the primary display device.