HS-2420RH
Radiation Hardened
Fast Sample and Hold
July 1995
Features
Description
• Maximum Acquisition Time
The HS-2420RH is a radiation hardened monolithic circuit
consisting of a high performance operational amplifier with
its output in series with an ultra-low leakage analog switch
and MOSFET input unity gain amplifier.
- 10V Step to 0.1%. . . . . . . . . . . . . . . . . . . . . . . . . . . 4µs
- 10V Step to 0.01%. . . . . . . . . . . . . . . . . . . . . . . . . . 6µs
• Maximum Drift Current . . . . . . . . . . . . . . . . . . . . . .10nA
(Maximum Over Temperature)
With an external hold capacitor connected to the switch output,
a versatile, high performance sample-and-hold or track-and-
hold circuit is formed. When the switch is closed, the device
behaves as an operation amplifier, and any of the standard op
amp feedback networks may be connected around the device
to control gain, frequency response, etc. When the switch is
opened the output will remain at its last level.
• TTL Compatible Control Input
• Power Supply Rejection . . . . . . . . . . . . . . . . . . . . . .≥80dB
• Total Gamma Dose. . . . . . . . . . . . . . . . . 1 x 105 RAD(SI)
• No Latch-Up
Performance as a sample-and-hold compares very favorably
with other monolithic, hybrid, modular, and discrete circuits.
Accuracy to better than 0.01% is achievable over the
temperature range. Fast acquisition is coupled with superior
droop characteristics, even at high temperatures. High slew
rate, wide bandwidth, and low acquisition time produce
excellent dynamic characteristics. The ability to operate at
gains greater than 1 frequently eliminates the need for
external scaling amplifiers.
Applications
• Data Acquisition Systems
• D to A Deglitcher
• Auto Zero Systems
• Peak Detector
• Gated Op Amp
The device may also be used as a versatile operational
amplifier with a gated output for applications such as analog
switches, peak holding circuits, etc.
Ordering Information
TEMPERATURE
PART NUMBER
RANGE
PACKAGE
o
o
HS1-2420RH-Q
-55 C to +125 C
14 Lead CerDIP
Pinout
Functional Diagram
14 LEAD CERAMIC DUAL-IN-LINE
FRIT SEAL PACKAGE (CerDIP)
MIL-STD-1835, GDIP1-T14
TOP VIEW
OFFSET
ADJUST
V+
3
4
5
SAMPLE/HOLD
CONTROL
1
2
3
4
5
6
7
14
13
12
11
10
9
IN-
7
1
IN+
OFFSET ADJUST
OFFSET ADJUST
V-
GND
-
- INPUT
+ INPUT
OUTPUT
-
+
+
NC
2
14 Pin DIP
HOLD CAPACITOR
HS-2420RH
14
NC
V+
SAMPLE/
HOLD
CONTROL
NC
8
NC
OUTPUT
13
GND V-
5
11
HOLD
CAPACITOR
NOTE: Pin Numbers Correspond to DIP Package Only.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Spec Number 518855
File Number 3554.1
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