GENERAL DESCRIPTION

The AD9245 is a monolithic, single 3 V supply, 14-bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS analog-to-digital converter (ADC) featuring a high performance sample-andhold amplifier (SHA) and voltage reference. The AD9245 uses a multistage differential pipelined architecture with output error correction logic to provide 14-bit accuracy 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 = 72.7 dBc to Nyquist

SFDR = 83.0 dBc to Nyquist

Low power

366 mW at 80 MSPS

300 mW at 65 MSPS

165 mW at 40 MSPS

90 mW at 20 MSPS

Differential input with 500 MHz bandwidth

On-chip reference and sample-and-hold

DNL = ±0.5 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

Medical imaging equipment

IF sampling in communications receivers

WCDMA, CDMA-One, CDMA-2000, and TDS-CDMA

Battery-powered instruments

Hand-held scopemeters

Spectrum analyzers

Power-sensitive military applications