HA5340

HA5340/883 June 1994 High Speed, Low Distortion, Precision Monolithic Sample and Hold Amplifier Description The HA-5340/883 combines the advantages of two sample/hold architectures to create a new generation of monolithic sample/ hold. High amplitude, high frequency signals can be sampled with very low distortion being introduced. The combination of exceptionally fast acquisition time and specified/characterized hold mode distortion is an industry first. Additionally, the AC performance is only minimally affected by additional hold capacitance. To achieve this level of performance, the benefits of an integrating output stage have been combined with the advantages of a buffered hold capacitor. To the user this translates to a front-end stage that has high bandwidth due to charging only a small capacitive load and an output stage with constant pedestal error which can be nulled out using the offset adjust pins. Since the performance penalty for additional hold capacitance is low, the designer can further minimize pedestal error and droop rate without sacrificing speed. Low distortion, fast acquisition, and low droop rate are the result, making the HA-5340/883 the obvious choice for high speed, high accuracy sampling systems. Features • This Circuit is Processed in Accordance to MIL-STD883 and is Fully Conformant Under the Provisions of Paragraph 1.2.1. • Fast Acquisition Time (0.01%) . . . . . . . . . . . . . . . 900ns • Fast Hold Mode Settling Time (0.01%) . . . . . . . . . 300ns • Low Distortion (Hold Mode) . . . . . . . . . . . -72dBc (Typ) (VIN = 200kHz, Fs = 450kHz, 5VP-P) • Bandwidth Minimally Affected By External CH • Fully Differential Analog Inputs • Built-in 135pF Hold Capacitor • Pin Compatible with HA-5320 Applications • High Bandwidth Precision Data Acquisition Systems • Inertial Navigation and Guidance Systems • Ultrasonics • SONAR • RADAR Pinouts HA-5340/883 (CERDIP) TOP VIEW Ordering Information PART NUMBER TEMPERATURE RANGE -55oC -55oC to to +125oC +125oC PACKAGE 14 Lead CerDIP 20 Lead Ceramic LCC -INPUT 1 +INPUT 2 OFFSET ADJ 3 OFFSET ADJ 4 V- 5 SIG GND 6 OUTPUT 7 14 S/H CONTROL 13 SUPPLY GND 12 NC 11 EXTERNAL HOLD CAP 10 NC 9 V+ 8 NC HA1-5340/883 HA4-5340/883 Functional Diagram OFFSET ADJUST 3 4 CHOLD EXTERNAL (OPTIONAL) 11 7 HA-5340/883 (CLCC) TOP VIEW NC S/H CNTL SUPPLY GND 1 2 14 9 +V 5 -V 13 SUPPLY GND 6 * CHOLD 120pF -IN +IN CCOMP 15pF 7 OUT +IN 3 OFFSET ADJ NC OFFSET ADJ NC 4 5 6 7 -IN 2 1 20 19 18 NC 17 NC 16 EXT. HOLD CAP. 15 NC 14 NC S/H CONTROL V- 8 9 10 11 12 13 SIG GND OUTPUT NC NC V+ NOTE: Buffer acts as a buffer in sample mode, acts as a closed switch in hold mode. SIGNAL GND CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999 7-8 Spec Number 511117-883 File Number 2452.1 Specifications HA5340/883 Absolute Maximum Ratings Voltage Between V+ and V- Terminals . . . . . . . . . . . . . . . . . . . . 36V Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24V Digital Input Voltage (S/H Pin) . . . . . . . . . . . . . . . . . . . . . . .+8V, -6V Output Current, Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20mA Storage Temperature Range . . . . . . . . . . . . . . . . . -65oC to +150oC Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +175oC Lead Temperature (Soldering 10s) . . . . . . . . . . . . . . . . . . . . +300oC ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .