SHC298

® SHC298 SHC298A Monolithic SAMPLE/HOLD AMPLIFIER FEATURES q 12-BIT THROUGHPUT ACCURACY q LESS THAN 10µs ACQUISITION TIME q WIDEBAND NOISE LESS THAN 20µVrms q RELIABLE MONOLITHIC CONSTRUCTION q 1010Ω INPUT RESISTANCE q TTL-CMOS-COMPATIBLE LOGIC INPUT Offset Adjust 2 30kΩ Analog 3 Input Logic 8 Logic 7 Reference A2 5 Output A1 150Ω 6 Hold Capacitor C1 Mode Control (S/H) Input DESCRIPTION The SHC298 and SHC298A are high-performance monolithic sample/hold amplifiers featuring high DC accuracy with fast acquisition times and a low droop rate. Dynamic performance and holding performance can be optimized with proper selection of the external holding capacitor. With a 1000pF holding capacitor, 12-bit accuracy can be achieved with a 6µs acquisition time. Droop rates less than 5mV/min are possible with a 1µF holding capacitor. These sample/holds will operate over a wide supply voltage ranging from ±5V to ±18V with very little change in performance. A separate Offset Adjust pin is used to adjust the offset in either the Sample on the Hold modes. The fully differential logic inputs have low input current, and are compatible with TTL, 5V CMOS, and CMOS logic families. The SHC298AM is available in a hermetically sealed 8-pin TO-99 package and is specified over a temperature range from –25°C to +85°C. The SHC298JP and SHC298JU are 8-pin plastic DIP and SOIC packaged parts specified over 0°C to +70°C. The SHC298AJP, specified over 0°C to +70°C, is available in an 8-pin plastic DI...