The AD9689 is a dual, 14-bit, 2.0 GSPS/2.6 GSPS analog-to-digital converter (ADC). The device has an on-chip buffer and a sample-and-hold circuit designed for low power, small size, and ease of use. This product is designed to support communications applications capable of direct sampling wide bandwidth analog signals of up to 5 GHz. The −3 dB bandwidth of the ADC input is 9 GHz. The AD9689 is optimized for wide input bandwidth, high sampling rate, excellent linearity, and low power in a small package.

Product Highlights
Wide, input −3 dB bandwidth of 9 GHz supports direct radio frequency (RF) sampling of signals up to about 5 GHz.
Four integrated, wideband decimation filters and NCO blocks supporting multiband receivers.
Fast NCO switching enabled through the GPIO pins.
SPI controls various product features and functions to meet specific system requirements.
Programmable fast overrange detection and signal monitoring.
On-chip temperature diode for system thermal management.
12 mm × 12 mm, 196-ball BGA.
Pin, package, feature, and memory map compatible with the AD9208 14-bit, 3.0 GSPS, JESD204B dual ADC.
Applications
Diversity multiband and multimode digital receivers
3G/4G, TD-SCDMA, W-CDMA, and GSM, LTE, LTE-A
Electronic test and measurement systems
Phased array radar and electronic warfare
DOCSIS 3.0 CMTS upstream receive paths
HFC digital reverse path receivers