DATASHEET
ISL28134
FN6957
Rev 6.00
October 14, 2014
5V Ultra Low Noise, Zero Drift Rail-to-Rail Precision Op Amp
The ISL28134 is a single, chopper-stabilized zero drift
Features
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
S
- V and V . . . . . . . . . . . . . . . . . . . . . . .10mV from V , typ
OH OL
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
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.
• 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 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
Applications
• Medical instrumentation
- Industrial. . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
- Full industrial . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
• Sensor gain amps
• Packaging
• Precision low drift, low frequency ADC drivers
• Precision voltage reference buffers
- Single: SOIC, SOT-23
Related Literature
• Thermopile, thermocouple, and other temperature sensors
front-end amplifiers
• AN1641, “ISL28134SOICEVAL1Z Evaluation Board User’s
Guide”
• Inertial sensors
• AN1560, “Making Accurate Voltage Noise and Current Noise
Measurements on Operational Amplifiers Down to 0.1Hz”
• 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
FN6957 Rev 6.00
October 14, 2014
Page 1 of 25