GENERAL DESCRIPTION

The AD9235 is a family of monolithic, single 3 V supply, 12-bit, 20/40/65 MSPS analog-to-digital converters (ADCs). This family features a high performance sample-and-hold amplifier (SHA) and voltage reference. The AD9235 uses a multistage differential pipelined architecture with output error correction logic to provide 12-bit accuracy at 20/40/65 MSPS data rates and guarantee no missing codes over the full operating temperature range.

FEATURES

Single 3 V supply operation (2.7 V to 3.6 V)

SNR = 70 dBc to Nyquist at 65 MSPS

SFDR = 85 dBc to Nyquist at 65 MSPS

Low power: 300 mW at 65 MSPS

Differential input with 500 MHz bandwidth

On-chip reference and SHA

DNL = ±0.4 LSB

Flexible analog input: 1 V p-p to 2 V p-p range

Offset binary or twos complement data format

Clock duty cycle stabilizer

APPLICATIONS

Ultrasound equipment

IF sampling in communications receivers IS-95, CDMA-One, IMT-2000

Battery-powered instruments

Hand-held scopemeters

Low cost digital oscilloscopes