GENERAL DESCRIPTION
DATEL's ADS-325A is a low power, 10-bit, 20MHz, CMOS sampling A/D converter. Its small 48 pin plastic LQFP package contains a S/H amplifier, a 3-state output register, linearity calibration circuitry, and all necessary control logic. Only two external reference voltages, an A/D clock and a few digital inputs are required. The A/D clock may be applied with 50% duty cycle.
The excellent dynamic performance includes a spurious free dynamic range of 65dB and a signal-to-noise ratio with distortion of 54dB with a 3MHz input. ADS-325A is capable of operating from a single +5V power supply and typically consumes only 150mW. It can also operate from a +5V analog VS with +3.3V digital VS enabling an interface with 3.3V logic circuitry. The ADS-325A is ideally suited for high quality video/CCD imaging applications.

FEATURES
*10-bit, 20MHz sampling
*±1LSB max. differential nonlinearity
*Internal calibration circuit
*Internal S/H amplifier
*70MHz input bandwidth
*TTL/CMOS compatible in-out logic
*Latched three-state output data
*Single +5V supply
*Low 150mW power dissipation
*Small 48 pin LQFP package
*Low cost

 

ADS-325A - 10-Bit, 20MHz Sampling A/D Converter