■ Overview

The MN673274 is designed for surveillance and PC input cameras. In addition to the basic functions of luminance signal and chrominance signal processing, it also integrates microcontroller functions (ALC, AWB, and AGC) and SSG, CG, and I2C-bus circuits on a single chip.

■ Features

? Input: Analog signal (A/D converter input)

? Output: Digital output

YUV signal: 8 bits

Analog outputs

Y signal

C signal

Composite video output

RGB outputs

? Operating supply voltage: 3.3 V ± 0.3 V

? Operating frequency: 9.5 MHz to 28.7 MHz

? Main functions

? 10-bit A/D converter

? 10-bit D/A converter

? 2-channel 8-bit D/A converter

? Support for analog AGC (NN2038, NN2039)

? CG and SSG functions

? 510H and 768H (Supports NTSC and PAL )

? Supports progressive scan readout CCDs with complementary color filters for VGA

? Supports black-and-white CCD signal processing

? CCD white defect/black defect correction circuit

? Maximum digital AGC gain: 24 dB

? Left/right reversing function

? Variable gamma correction (γ = 0.3 to 1)

? ZV port conforming mode, BT656 conforming mode

? External synchronization support: HD/VD, VD2, Sync., LL mode

? On-chip I2C-bus circuit

? ELC/AGC (Also supports external AGC)

? Two-mode white balance (manual/ATW) with ATW lock function

? Automatic OB correction function

■ Applications

? Surveillance cameras, PC cameras