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Rad Hard Dual 36V Precision Single-Supply, Rail-to-Rail
Output, Low-Power Operational Amplifiers
ISL70218SRH
The ISL70218SRH is a dual, low-power precision amplifier
optimized for single-supply applications. This op amp features
a common mode input voltage range extending to 0.5V below
the V- rail, a rail-rail differential input voltage range, and
rail-to-rail output voltage swing, which makes it ideal for
single-supply applications where input operation at ground is
important.
This op amp features low power, low offset voltage, and low
temperature drift, making it ideal for applications requiring
both high DC accuracy and AC performance. This amplifier is
designed to operate over a single supply range of 3V to 36V or a
split supply voltage range of +1.8V/-1.2V to ±18V. The
combination of precision and small footprint provides the user
with outstanding value and flexibility relative to similar
competitive parts.
Applications for this amplifier include precision
instrumentation, data acquisition, precision power supply
controls, and industrial controls.
The ISL70218SRH is available in a 10 Ld hermetic ceramic
flatpack and operates over the extended temperature range of
-55°C to +125°C.
Related Literature
? See AN1653 , “ISL70218SRH Evaluation Board User’s
Guide”
Features
? Wide Single and Dual Supply Range . . . . . . . .3V to 36V Max.
? Low Current Consumption . . . . . . . . . . . . . . . . . . 850μA, Typ.
? Low Input Offset Voltage . . . . . . . . . . . . . . . . . . . . . . 40μV, Typ.
? Rail-to-Rail Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <10mV
? Rail-to-Rail Input Differential Voltage Range for Comparator
Applications
? Operating Temperature Range. . . . . . . . . . .-55°C to +125°C
? Below-ground (V-) Input Capability to -0.5V.
? Low Noise Voltage . . . . . . . . . . . . . . . . . . . . . . 5.6nV/ √ Hz, Typ.
? Low Noise Current . . . . . . . . . . . . . . . . . . . . . . 355fA/ √ Hz, Typ.
? Offset Voltage Temperature Drift . . . . . . . . . . . 0.3μV/°C, Typ.
? No Phase Reversal
? Radiation Tolerance
- High Dose Rate. . . . . . . . . . . . . . . . . . . . . . . . . . 100krad(Si)
- Low Dose Rate . . . . . . . . . . . . . . . . . . . . . . . . . . 100krad(Si)
- SEL/SEB LET TH (V S = ±18V) . . . . . . . . . . 86.4 MeV/mg/cm 2
Applications
? Precision Instruments
? Active Filter Blocks
? Data Acquisition
? Power Supply Control
? Industrial Process Control
R F
LOAD
R SENSE
R IN -
10k ?
IN-
100k ?
-
V+
ISL70218SRH
+3V
to 40V
V OUT
400
300
200
100
+25°C
+125°C
R IN +
IN+
+
V-
0
10k ?
R REF +
GAIN = 10
-100
-200 -55°C
-40°C
100k ?
-300
V REF
-400
-16
-15
-14
-13 13
14
15
16
INPUT COMMON MODE VOLTAGE (V)
FIGURE 1. TYPICAL APPLICATION: SINGLE-SUPPLY, LOW-SIDE
CURRENT SENSE AMPLIFIER
FIGURE 2. INPUT OFFSET VOLTAGE vs INPUT COMMON MODE
VOLTAGE, V S = ±15V
August 17, 2011
FN7871.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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