Rad Hard Dual 36V Precision Single-Supply, Rail-to-Rail
Output, Low-Power Operational Amplifiers
ISL70218SRH
Features
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.
• 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.
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.
• 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
Applications for this amplifier include precision
instrumentation, data acquisition, precision power supply
controls, and industrial controls.
- High Dose Rate. . . . . . . . . . . . . . . . . . . . . . . . . . 100krad(Si)
- Low Dose Rate . . . . . . . . . . . . . . . . . . . . . . . . . . 100krad(Si)
- SEL/SEB LETTH (VS = ±18V) . . . . . . . . . . 86.4 MeV/mg/cm2
The ISL70218SRH is available in a 10 Ld hermetic ceramic
flatpack and operates over the extended temperature range of
-55°C to +125°C.
Applications
• Precision Instruments
• Active Filter Blocks
Related Literature
• See AN1653, “ISL70218SRH Evaluation Board User’s
Guide”
• Data Acquisition
• Power Supply Control
• Industrial Process Control
R
F
400
100kΩ
+25°C
LOAD
300
+3V
to 40V
R
-
IN
+125°C
200
IN-
-
V
OUT
V+
10kΩ
R
SENSE
100
0
ISL70218SRH
R
+
V-
IN
IN+
+
10kΩ
-100
GAIN = 10
-40°C
R
+
REF
-200
-300
-400
-55°C
100kΩ
V
REF
-16
-15
-14
-13 13
14
15
16
INPUT COMMON MODE VOLTAGE (V)
FIGURE 2. INPUT OFFSET VOLTAGE vs INPUT COMMON MODE
VOLTAGE, VS = ±15V
FIGURE 1. TYPICAL APPLICATION: SINGLE-SUPPLY, LOW-SIDE
CURRENT SENSE AMPLIFIER
August 17, 2011
FN7871.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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