GENERAL DESCRIPTION

The AD9237 is a family of monolithic, single 3 V supply, 12-bit, 20 MSPS/40 MSPS/65 MSPS analog-to-digital converters (ADC). This family features a high performance sample-and-hold amplifier (SHA) and voltage reference. The AD9237 uses a multistage differential pipelined architecture with output error correction logic to provide 12-bit accuracy at 20 MSPS/40 MSPS/65 MSPS data rates and guarantees no missing codes over the full operating temperature range.

FEATURES

Ultralow power 85 mW at 20 MSPS 135 mW at 40 MSPS 190 mW at 65 MSPS

SNR = 66 dBc to Nyquist at 65 MSPS

SFDR = 80 dBc to Nyquist at 65 MSPS

DNL = ±0.7 LSB

Differential input with 500 MHz bandwidth

Flexible analog input: 1 V p-p to 4 V p-p range

Offset binary, twos complement, or gray code data formats

Output enable pin

2-step power-down

Full power-down and sleep mode

Clock duty cycle stabilizer

APPLICATIONS

Ultrasound and medical imaging

Battery-powered instruments

Hand-held scope meters

Low cost digital oscilloscopes

Low power digital still cameras and copiers

Low power communications