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GENERAL DESCRIPTION

The AD6645 is a high speed, high performance, monolithic 14-bit analog-to-digital converter (ADC). All necessary functions, including track-and-hold (T/H) and reference, are included on the chip to provide a complete conversion solution. The AD6645 provides CMOS-compatible digital outputs. It is the fourth generation in a wideband ADC family, preceded by the AD9042 (12-bit, 41 MSPS), the AD6640 (12-bit, 65 MSPS, IF sampling), and the AD6644 (14-bit, 40 MSPS/65 MSPS).

FEATURES

SNR = 75 dB, fIN 15 MHz, up to 105 MSPS

SNR = 72 dB, fIN 200 MHz, up to 105 MSPS

SFDR = 89 dBc, fIN 70 MHz, up to 105 MSPS

100 dBFS multitone SFDR

IF sampling to 200 MHz

Sampling jitter: 0.1 ps

1.5 W power dissipation

Differential analog inputs

Pin compatible to AD6644

Twos complement digital output format

3.3 V CMOS compatible

Data-ready for output latching

APPLICATIONS

Multichannel, multimode receivers

Base station infrastructures

AMPS, IS-136, CDMA, GSM, W-CDMA

Single channel digital receivers

Antenna array processing

Communications instrumentation

Radars, infrared imaging

Instrumentation