SHC298 Datasheet, PDF (1/9 Pages) Burr-Brown (TI) – Monolithic SAMPLE/HOLD AMPLIFIER

®
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 tempera-
ture 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 DIP. The SHC298A grade
features improved gain and offset error, improved drift
over temperature, and faster acquisition time.
The SHC298 family is a price-performance bargain. It
is well suited for use with several 12-bit A/D convert-
ers in data acquisition systems, data distribution
systems, and analog delay circuits.
SBFS011
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© 1977 Burr-Brown Corporation
PDS-373E
Printed in U.S.A. August, 1996