The TLV990-40 is a complete CCD and video signal processor/digitizer designed for digital still camera and video camcorder applications. The TLV990-40 performs all the analog-processing functions necessary to maximize the dynamic range, corrects various errors associated with the CCD sensor, and then digitizes the results with an on-chip high-speed analog-to-digital converter (ADC).
The key components of the TLV990-40 include: an input clamp circuit for CCD and analog video signals, a correlated double sampler (CDS), a programmable-gain amplifier (PGA) with 0 to 36-dB gain range, two internal digital-to-analog converters (DAC) for automatic or programmable optical black level and offset calibration, a 10-bit, 40-MSPS pipeline ADC, a parallel data port for easy microprocessor interface, a serial port for configuring internal control registers, two additional DACs for external system control, and internal reference voltages.
features
• Single-Chip CCD Analog Front-End
• 10-Bit, 40-MSPS†, A/D-Converter Single 3-V Supply Operation
• Very Low Power: 200 mW Typical, 2-mW Power-Down Mode
• Differential Nonlinearity Error:
< ±0.6 LSB Typical
• Integral Nonlinearity Error: < ±1.75 LSB Typical
• Programmable Gain Amplifier (PGA) With 0-dB to 36-dB Gain Range (0.045 dB/Step)
• Automatic or Programmable Optical Black Level and Offset Calibration With Digital Filter and Bad Pixel Limits
