■ Overview

The MN6732741 is camera signal-processing IC appropriate for a wide variety of applications, including surveillance cameras and cameras used for input to personal computers. In addition to the basic functions of luminance and chrominance signal processing, it also integrates the ALC, AWB, and AGC functions that were previously implemented using microcontroller signal processing. Furthermore, it also integrates on a single chip, including SSG, CG, and I2C-bus functions.

■ Features

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

• Outputs: Digital output

8-bit YUV signal

Analog outputs

Luminance signal

Chrominance signal

Composite video signal output

RGB output

• Operating supply voltage: 3.3 V ± 0.3 V

• Operating clock frequency: 9.5 MHz to 28.7 MHz

• Main functions

• 10-bit A/D converter

• Single-channel 10-bit D/A converter

• Two-channel 8-bit D/A converter

• Supports analog AGC (NN2038 or NN2039)

• CG and SSG circuits

• Supports 510 and 768 horizontal lines (NTSC and PAL)

• Supports VGA progressive scan readout CCDs (complementary color filters)

• Also supports black-and-white CCD signal processing

• CCD white defect/black defect correction circuit

• Digital AGC gain: up to 24 dB

• Left/right reversing function

• Variable gamma correction (γ = 0.3 to 1)

• ZV port standard mode, BT656 standard mode

• Modes: LL, SYNC, VD2, and HD/VD external synchronization support

• Built-in I2C-bus circuit

• ALC and AGC (Also supports external AGC)

• Two white balance modes (manual and ATW) with ATW lock function

• Automatic OB correction function

■ Applications

• Surveillance cameras, PC input cameras, multimedia cameras