GENERAL DESCRIPTION

The SPT7720 is an 8-bit, high-speed, analog-to-digital converter implemented in a 0.5 µm BiCMOS process. It utilizes a folding and interpolating architecture that provides both high sample rates and low power. The device comes complete with a high bandwidth track-and-hold amplifier and internal voltage reference.

The SPT7720 digital inputs interface directly to TTL, CMOS or positive ECL (PECL) logic. The digital outputs are user selectable in either single-channel or dual-channel modes. It is a pin-compatible, direct replacement for the AD9054. The SPT7720 is available in a 44-lead TQFP surface mount package over the industrial temperature range of –40 to +85 °C.

FEATURES

• Pin-compatible with AD9054

• High conversion rate: 200 MSPS

• Less than ±1/2 LSB DLE

• 7.16 effective number of bits (ENOB) at 70 MHz

• Single +5 V power supply

• Internal THA and voltage reference

• Low power: 430 mW

• 500 MHz full-power bandwidth

• 1V PP input range

• Single or demuxed TTL output ports

• 44-lead TQFP

APPLICATIONS

• Digital sampling oscilloscopes (DSO)

• RGB video processing

• Digital communications

• High-speed instrumentation

• Projection display systems