GENERAL DESCRIPTION

The AD9648 is a monolithic, dual-channel, 1.8 V supply, 14-bit, 105 MSPS/125 MSPS analog-to-digital converter (ADC). It features a high performance sample-and-hold circuit and on chip voltage reference.

The product uses multistage differential pipeline architecture with output error correction logic to provide 14-bit accuracy at 125 MSPS data rates and to guarantee no missing codes over the full operating temperature range.

FEATURES

1.8 V analog supply operation

1.8 V CMOS or LVDS outputs

SNR = 74.5 dBFS @ 70 MHz

SFDR = 91 dBc @ 70 MHz

Low power: 78 mW/channel ADC core @ 125 MSPS

Differential analog input with 650 MHz bandwidth

IF sampling frequencies to 200 MHz

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

2 V p-p differential analog input

DNL = ±0.35 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

Broadband data applications

Battery-powered instruments

Hand held scope meters

Portable medical imaging

Ultrasound

Radar/LIDAR