The AD9814 is a complete analog signal processor for CCD imaging applications. It features a 3-channel architecture de-signed to sample and condition the outputs of trilinear color CCD arrays. Each channel consists of an input clamp, Corre-lated Double Sampler (CDS), offset DAC and Programmable Gain Amplifier (PGA), multiplexed to a high performance 14-bit A/D converter.The CDS amplifiers may be disabled for use with sensors such as Contact Image Sensors (CIS) and CMOS active pixel sensors, which do not require CDS.The 14-bit digital output is multiplexed into an 8-bit output word that is accessed using two read cycles. The internal registers are programmed through a 3-wire serial interface, and provide adjustment of the gain, offset, and operating mode.
- 14-Bit 10 MSPS A/D Converter
- No Missing Codes Guaranteed
- 3-Channel Operation Up to 10 MSPS
- 1-Channel Operation Up to 7 MSPS
- Correlated Double Sampling
- 1-6x Programmable Gain
- ±300 mV Programmable Offset
- Input Clamp Circuitry
- Internal Voltage Reference
- Multiplexed Byte-Wide Output (8+6 Format)
- 3-Wire Serial Digital Interface
- +3/+5 V Digital I/O Compatibility
- Available in Tray and Reel Packaging
- Applications:
- Flatbed Document Scanners
- Film Scanners
- Digital Color Copiers
- Multifunction Peripherals