ISL28118 Datasheet, PDF (1/23 Pages) Intersil Corporation – 40V Precision Single Supply Rail-to-Rail Output Low Power Operational Amplifiers

40V Precision Single Supply Rail-to-Rail Output
Low Power Operational Amplifiers
ISL28118, ISL28218
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.
Applications for these amplifiers include precision
instrumentation, data acquisition, precision power supply
controls, and industrial controls.
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.
Features
• Rail-to-Rail Output
• 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.
• Superb Offset Voltage Temperature Drift
- ISL28118 . . . . . . . . . . . . . . . . . . 1.2µV/°C, Max.
- ISL28218 . . . . . . . . . . . . . . . . . . 1.4µV/°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
Typical Application
R_F
LOAD
R_IN-
R_SENSE
10kΩ
R_IN+
10kΩ
100kΩ
IN-
IN+
+3V
-
to 40V
V+
ISL28118
V-
+
V_OUT
R_REF+
100kΩ
GAIN = 10
V_REF
SINGLE-SUPPLY, LOW-SIDE CURRENT SENSE AMPLIFIER
Input Offset Voltage vs Input
Common Mode Voltage, V_S = ±15V
500
400
+25°C
300
200
100
+125°C
0
-100
-200
-300
-40°C
-400
-500
-17 -16 -15 -14 -13 -1210 11 12 13 14 15
INPUT COMMON MODE VOLTAGE (V)
November 22, 2010
1
FN7532.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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