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GENERAL DESCRIPTION

The AD9231 is a monolithic, dual-channel, 1.8 V supply, 12-bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS analog-to-digital converter (ADC). It features a high performance sample-and-hold circuit and on-chip voltage reference.

FEATURES

1.8 V analog supply operation

1.8 V to 3.3 V output supply

SNR

71.3 dBFS at 9.7 MHz input

69.0 dBFS at 200 MHz input

SFDR

93 dBc at 9.7 MHz input

83 dBc at 200 MHz input

Low power

32 mW per channel at 20 MSPS

71 mW per channel at 80 MSPS

Differential input with 700 MHz bandwidth

On-chip voltage reference and sample-and-hold circuit

2 V p-p differential analog input

DNL = ±0.40 LSB

Serial port control options

Offset binary, gray code, or twos complement data format

Optional clock duty cycle stabilizer

Integer 1-to-8 input clock divider

Data output multiplex option

Built-in selectable digital test pattern generation

Energy-saving power-down modes

Data clock out with programmable clock and data alignment

APPLICATIONS

Communications

Diversity radio systems

Multimode digital receivers

GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA

I/Q demodulation systems

Smart antenna systems

Battery-powered instruments

Hand held scope meters

Portable medical imaging

Ultrasound

Radar/LIDAR