GENERAL DESCRIPTION

The AD9694 is a quad, 14-bit, 500 MSPS 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 device is designed for sampling wide bandwidth analog signals of up to 1.4 GHz. The AD9694 is optimized for wide input bandwidth, high sampling rate, excellent linearity, and low power in a small package.

FEATURES

JESD204B (Subclass 1) coded serial digital outputs Lane rates up to 15 Gbps

1.66 W total power at 500 MSPS

415 mW per analog-to-digital converter (ADC) channel

SFDR = 82 dBFS at 305 MHz (1.80 V p-p input range)

SNR = 66.8 dBFS at 305 MHz (1.80 V p-p input range)

Noise density = −151.5 dBFS/Hz (1.80 V p-p input range)

0.975 V, 1.8 V, and 2.5 V dc supply operation

No missing codes

Internal ADC voltage reference

Analog input buffer

On-chip dithering to improve small signal linearity

Flexible differential input range 1.44 V p-p to 2.16 V p-p (1.80 V p-p nominal)

1.4 GHz analog input full power bandwidth

Amplitude detect bits for efficient AGC implementation

4 integrated wideband digital processors 48-bit NCO, up to 4 cascaded half-band filters

Differential clock input

Integer clock divide by 1, 2, 4, or 8

On-chip temperature diode

Flexible JESD204B lane configurations

APPLICATIONS

Communications

Diversity multiband, multimode digital receivers 3G/4G, W-CDMA, GSM, LTE, LTE-A

General-purpose software radios

Ultrawideband satellite receivers

Instrumentation

Radars

Signals intelligence (SIGINT)