SHM-14

® ® SHM-14 Ultra-Fast, 14-Bit Linear Monolithic Sample-Hold Amplifiers IN N O V A T I O N a n d E X C E L L E N C E FEATURES • Fast acquisition time: 10ns to ±0.1% 20ns to ±0.024% 25ns to ±0.012% • ±0.0012% Nonlinearity • 65µV rms output noise • 250MHz small signal bandwidth • 70MHz full power bandwidth • –80dB feedthrough • 1ps Aperture jitter • 250mW power dissipation • Low cost INPUT/OUTPUT CONNECTIONS — SOIC PIN 1 2 3 4 5 6 7 8 FUNCTION –5V SUPPLY DO NOT CONNECT ANALOG INPUT DO NOT CONNECT –5V SUPPLY DO NOT CONNECT DO NOT CONNECT –5V SUPPLY PIN 16 15 14 13 12 11 10 9 FUNCTION SAMPLE/HOLD SAMPLE/HOLD +5V SUPPLY EXT. CAPACITOR GROUND +5V SUPPLY +5V SUPPLY ANALOG OUTPUT GENERAL DESCRIPTION The SHM-14 is an extremely high-speed and accurate monolithic sample-and-hold amplifier designed for fast data acquisition applications. The SHM-14 is accurate (±0.5 LSB to 14-bits over the full military temperature range) and is very fast (10ns and 20ns acquisition times to accuracies of 10 and 12 bits respectively). With this high performance and a full power bandwidth of 70MHz, the SHM-14 is an ideal device for driving flash and high-resolution subranging A/D converters. A careful design optimizes the device for accuracy and speed over the full military temperature range. The droop rate is a low ±2mV/µs and can be further reduced by adding an optional external hold capacitor. The 30mA output current and guaranteed specifications for a 100Ω load provide high drive capability. Operating from ± 5V supplies, the SHM-14 consumes only 250mW of power. The SHM-14 is built using a fast complementary bipolar process. The device is available in both military and industrial temperature ranges. The SHM-14 is packaged in a 16-pin plastic SOIC or in a 20-pin ceramic LCC. INPUT/OUTPUT CONNECTIONS — CLCC PIN 1 2 3 4 5 6 7 8 9 10 FUNCTION NOT CONNECTED –5V SUPPLY NOT CONNECTED ANALOG INPUT NOT CONNECTED DO NOT CONNECT –5V SUPPLY DO NOT CONNECT DO NOT CONNECT –5V SUPPLY PIN 20 19 18 17 16 15 14 13 12 11 FUNCTION NOT CONNECTED SAMPLE/HOLD SAMPLE/HOLD +5V SUPPLY NOT CONNECTED EXT. CAPACITOR GROUND +5V SUPPLY +5V SUPPLY ANALOG OUTPUT –5V SUPPLY 1, 5, 8 EXTERNAL HOLD CAPACITOR 13 +5V SUPPLY 10, 11, 14 ANALOG INPUT 3 +1 CH 15pF +1 9 ANALOG OUTPUT SAMPLE/HOLD SAMPLE/HOLD 15 16 SWITCH DRIVE 2, 4, 6, 7 DO NOT CONNECT 12 Note: SOIC Package Pinouts Shown GROUND Figure 1. SHM-14 Functional Block Diagram DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048-1151 (U.S.A.) • Tel: (508) 339-3000 Fax: (508) 339-6356 • For immediate assistance (800) 233-2765 ® ® SHM-14 ABSOLUTE MAXIMUM RATINGS PARAMETERS +5V Supply –5V Supply Analog Input LIMITS UNITS Volts Volts Volts Volts mA Volts °C °C 0 to +6 0 to –6 +5V Supply –1 –5V Supply +1 Continuous Output Current ±50 Digital Inputs