DATASHEET
5V Ultra Low Noise, Zero Drift Rail-to-Rail Precision
Op Amp
ISL28134
Features
The ISL28134 is a single, chopper-stabilized zero drift
operational amplifier optimized for single and dual supply
operation from 2.25V to 6.0V and ±1.125V and ±3.0V. The
ISL28134 uses auto-correction circuitry to provide very low input
offset voltage, drift and a reduction of the 1/f noise corner below
0.1Hz. The ISL28134 achieves ultra low offset voltage, offset
temperature drift, wide gain bandwidth and rail-to-rail
input/output swing while minimizing power consumption.
• Rail-to-rail inputs and outputs
- CMRR at V = 0.1V beyond V . . . . . . . . . . . . . 135dB, typ
CM
- V and V . . . . . . . . . . . . . . . . . . . . . . .10mV from V , typ
OH OL
S
S
• No 1/f noise corner down to 0.1Hz
- Input noise voltage . . . . . . . . . . . . . . . . .10nV/Hz at 1kHz
- 0.1Hz to 10Hz noise voltage. . . . . . . . . . . . . . . . . 250nV
P-P
• Low offset voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5µV, Max
• Superb offset drift . . . . . . . . . . . . . . . . . . . . . . . 15nV/°C, Max
• Single supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.25V to 6.0V
• Dual supply . . . . . . . . . . . . . . . . . . . . . . . . . ±1.125V to ±3.0V
The ISL28134 is ideal for amplifying the sensor signals of analog
front-ends that include pressure, temperature, medical, strain
gauge and inertial sensors down to the µV levels.
The ISL28134 can be used over standard amplifiers with high
stability across the industrial temperature range of -40°C to
+85°C and the full industrial temperature range of -40°C to
+125°C. The ISL28134 is available in an industry standard
pinout SOIC and SOT-23 packages.
• Low I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 675µA, typ
CC
• Wide bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5MHz
• Operating temperature range
- Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
- Full industrial . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
Applications
• Medical instrumentation
• Packaging
• Sensor gain amps
- Single: SOIC, SOT-23
• Precision low drift, low frequency ADC drivers
• Precision voltage reference buffers
Related Literature
• AN1641, “ISL28134SOICEVAL1Z Evaluation Board User’s
Guide”
• Thermopile, thermocouple, and other temperature sensors
front-end amplifiers
• AN1560, “Making Accurate Voltage Noise and Current Noise
Measurements on Operational Amplifiers Down to 0.1Hz”
• Inertial sensors
• Process control systems
• Weight scales and strain gauge sensors
1600
V
V
= ±2.5V
CM
s
1400
1200
1000
800
= 0V
+5
T = -40°C to +125°C
N = 2796
ISL28134
+
ISL26102
50Ω
50Ω
ISL22316
24-BIT ADC
-
50kΩ
ISL21010
5V VREF
600
50kΩ
-
400
DCP
+
200
0
ISL28134
-2.5 -2.0 -1.5 -1.0 -0.5
0
0.5 1.0 1.5 2.0 2.5
FIGURE 1. PRECISION WEIGH SCALE / STRAIN GAUGE
FIGURE 2. V HISTOGRAM V = 5V
OS
S
October 14, 2014
FN6957.6
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 2011-2014. 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.
1