40V Precision Single Supply Rail-to-Rail Output
Low Power Operational Amplifiers
ISL28118, ISL28218
Features
• Rail-to-Rail Output
The ISL28118 and ISL28218 are single and dual
precision, single supply rail-to-rail output amplifiers with
a common mode input voltage range extending to 0.5V
below the V- rail. These op amps feature low power, low
offset voltage, and low temperature drift, making them
the ideal choice for applications requiring both high DC
accuracy and AC performance. The devices can operate
from single (3V to 40V) or dual (±1.5V to ±20V)
supplies. The combination of precision and small
footprint provides the user with outstanding value and
flexibility relative to similar competitive parts.
• Below-Ground (V-) Input Capability to -0.5V
• Single Supply Range. . . . . . . . . . . . . . . .3V to 40V
• Low Current Consumption . . . . . . . . . . . . . . 850µA
• Low Noise Voltage . . . . . . . . . . . . . . . . 5.6nV/√Hz
• Low Noise Current . . . . . . . . . . . . . . . . 355fA/√Hz
• Low Input Offset Voltage
- ISL28118 . . . . . . . . . . . . . . . . . . . . 150µV Max.
- ISL28218 . . . . . . . . . . . . . . . . . . . . 230µV Max.
Applications for these amplifiers include precision
instrumentation, data acquisition, precision power supply
controls, and industrial controls.
• Superb Offset Voltage Temperature Drift
- ISL28118 . . . . . . . . . . . . . . . . . . 1.2µV/°C, Max.
- ISL28218 . . . . . . . . . . . . . . . . . . 1.4µV/°C, Max.
Both parts are offered in 8 Ld TDFN, 8 Ld SOIC and 8 Ld
MSOP packages. All devices are offered in standard pin
configurations and operate over the extended
temperature range of -40°C to +125°C.
• Operating Temperature Range . . . .-40°C to +125°C
• No Phase Reversal
Applications
• Precision Instruments
• Medical Instrumentation
• Data Acquisition
• Power Supply Control
• Industrial Process Control
Typical Application
Input Offset Voltage vs Input
Common Mode Voltage, VS = ±15V
R
F
500
100kΩ
LOAD
+25°C
400
+3V
R
-
IN
IN-
to 40V
300
-
V
OUT
V+
ISL28118
V-
10kΩ
R
200
100
0
+125°C
-40°C
SENSE
R
+
IN
IN+
+
10kΩ
-100
-200
-300
-400
-500
GAIN = 10
R
+
REF
100kΩ
V
REF
-17 -16 -15 -14 -13 -1210 11 12 13 14 15
INPUT COMMON MODE VOLTAGE (V)
SINGLE-SUPPLY, LOW-SIDE CURRENT SENSE AMPLIFIER
November 22, 2010
FN7532.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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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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