
1
40V Precision Single-Supply, Rail-to-Rail Output,
Low-Power Operational Amplifiers
ISL28118, ISL28218
The ISL28118 and ISL28218 are single and dual, low-power
precision amplifiers optimized for single-supply applications.
These devices feature a common mode input voltage range
extending to 0.5V below the V- rail, a rail-rail differential input
voltage range for use as a comparator, and rail-to-rail output
voltage swing, which makes them ideal for single-supply
applications where input operation at ground is important.
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. These amplifiers are designed to operate over a
single supply range of 3V to 40V or a split supply voltage range
of +1.8V/-1.2V to ±20V. The combination of precision and
small footprint provides the user with outstanding value and
flexibility relative to similar competitive parts.
Applications for these amplifiers include precision
instrumentation, data acquisition, precision power supply
controls, and industrial controls.
Both parts are offered in 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.
Related Literature
AN1595: ISL28218SOICEVAL1Z Evaluation Board User’s
Guide
Features
Rail-to-rail output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <10mV
Below-ground (V-) input capability to -0.5V
Rail-to-rail input differential voltage range for comparator
applications
Single-supply range . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 40V
Low current consumption . . . . . . . . . . . . . . . . . . . . . . . 850A
Low noise voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6nV/
√Hz
Low noise current. . . . . . . . . . . . . . . . . . . . . . . . . . . 355fA/
√Hz
Low input offset voltage
- ISL28118 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150V Max.
- ISL28218 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230V Max.
Superb offset voltage temperature drift
- ISL28118 . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2V/°C, Max.
- ISL28218 . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4V/°C, Max.
Operating temperature range. . . . . . . . . . . -40°C to +125°C
No phase reversal
Applications
Precision instruments
Medical instrumentation
Data acquisition
Power supply control
Industrial process control
FIGURE 1. TYPICAL APPLICATION: SINGLE-SUPPLY, LOW-SIDE
CURRENT SENSE AMPLIFIER
FIGURE 2. INPUT OFFSET VOLTAGE vs INPUT COMMON MODE
VOLTAGE, VS = ±15V
IN-
IN+
RF
RREF+
ISL28118
+3V
V-
V+
RIN-
10k
RIN+
10k
-
+
100k
VREF
100k
VOUT
LOAD
RSENSE
GAIN = 10
to 40V
V
OS
(V)
INPUT COMMON MODE VOLTAGE (V)
-400
-300
-200
-100
0
100
200
300
400
-16
-15
-14
-13 13
14
15
16
-40°C
+25°C
+125°C
March 5, 2013
FN7532.4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Copyright Intersil Americas LLC, 2010, 2011, 2013. 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.