GENERAL DESCRIPTION

The AD9445 is a 14-bit, monolithic, sampling analog-to-digital converter (ADC) with an on-chip IF sampling track-and-hold circuit. It is optimized for performance, small size, and ease of use. The product operates at up to a 125 MSPS conversion rate and is designed for multicarrier, multimode receivers, such as those found in cellular infrastructure equipment.

FEATURES

125 MSPS guaranteed sampling rate (AD9445BSV-125)

78.3 dBFS SNR/92 dBFS SFDR with 30 MHz input (3.2 V p-p)

74.8 dBFS SNR/95 dBFS SFDR with 30 MHz input (2.0 V p-p)

77.0 dBFS SNR/87 dBFS SFDR with 170 MHz input (3.2 V p-p)

74.6 dBFS SNR/95 dBFS SFDR with 170 MHz input (2.0 V p-p)

73.0 dBFS SNR/88 dBFS SFDR with 300 MHz input (2.0 V p-p)

102 dBFS 2-tone SFDR with 30 MHz and 31 MHz

92 dBFS 2-tone SFDR with 170 MHz and 171 MHz

60 fsec rms jitter

Excellent linearity

DNL = ±0.25 LSB typical

INL = ±0.8 LSB typical

2.0 V p-p to 4.0 V p-p differential full-scale input

Buffered analog inputs

LVDS outputs (ANSI-644 compatible) or CMOS outputs

Data format select (offset binary or twos complement)

Output clock available

3.3 V and 5 V supply operation

APPLICATIONS

Multicarrier, multimode cellular receivers

Antenna array positioning

Power amplifier linearization

Broadband wireless

Radar

Infrared imaging

Medical imaging

Communications instrumentation