AD9891/AD9895 are CCD signal processors with Precision Timing™ Generator from Analog Devices.
The document describes the AD9891 and AD9895, which are highly integrated CCD signal processors designed for digital still camera applications. Both devices include a complete analog front end with A/D conversion combined with a full-function programmable timing generator.
A Precision Timing core allows adjustment of high-speed clocks with 1 ns resolution at 20 MHz operation and 700 ps resolution at 30 MHz operation. The AD9891 is specified for pixel rates up to 20 MHz, while the AD9895 is specified for 30 MHz. The analog front end includes black level clamping, Correlated Double Sampling (CDS), Pixel Gain Amplifier (PxGA), Variable Gain Amplifier (VGA), and a 10-Bit or 12-Bit A/D converter.
| Operating Temperature Range | -20 to +85 °C |
|---|---|
| Storage Temperature Range | -65 to +150 °C |
| Maximum Clock Rate (AD9891) | 20 MHz |
| A/D Converter Resolution (AD9891) | 10 Bits |
| A/D Converter Resolution (AD9895) | 12 Bits |
| VGA Max Gain | 36 dB |
The maximum clock rate for the AD9891 is 20 MHz.
The devices are specified over an operating temperature range of –20 °C to +85 °C.