SPT7855

SPT7855 10-BIT, 25 MSPS, 135 mW A/D CONVERTER TECHNICAL DATA MAY 25, 2001 FEATURES Monolithic 25 MSPS converter 135 mW power dissipation On-chip track-and-hold Single +5 V power supply TTL/CMOS outputs 5 pF input capacitance Low cost Tri-state output buffers High ESD protection: 3,500 V minimum Selectable +3 V or +5 V logic I/O APPLICATIONS All high-speed applications where low power dissipation is required Video imaging Medical imaging IR imaging Digital communications GENERAL DESCRIPTION The SPT7855 is a 10-bit monolithic, low-cost, ultralowpower analog-to-digital converter capable of minimum word rates of 25 MSPS. The on-chip track-and-hold function assures very good dynamic performance without the need for external components. The input drive requirements are minimized due to the SPT7855’s low input capacitance of only 5 pF. Power dissipation is extremely low at only 135 mW typical at 25 MSPS with a power supply of +5.0 V. The digital outputs are +3 V or +5 V, and are user selectable. The SPT7855 is pin-compatible with an entire family of 10-bit, CMOS converters (SPT7835/40/50/55/60/61), which simplifies upgrades. The SPT7855 has incorporated proprietary circuit design* and CMOS processing technologies to achieve its advanced performance. Inputs and outputs are TTL/CMOS-compatible to interface with TTL/CMOS logic systems. Output data format is straight binary. The SPT7855 is available in 28-lead SOIC and 32-lead small (7 mm square) TQFP p...