ISL28134 Datasheet, PDF (1/20 Pages) Intersil Corporation – 5V Ultra Low Noise, Zero Drift Rail-to-Rail Precision Op Amp

5V Ultra Low Noise, Zero Drift Rail-to-Rail Precision Op
Amp
ISL28134
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 features very low input offset voltage and low noise
with no 1/f noise corner down to 0.1Hz. The ISL28134 is
designed to have ultra low offset voltage and offset temperature
drift, wide gain bandwidth and rail-to-rail input/output swing
while minimizing power consumption.
This amplifier is ideal for amplifying the sensor signals of analog
front-ends that include pressure, temperature, medical, strain
gauge and inertial sensors.
The ISL28134 can be used over standard amplifiers with high
stability over the industrial temperature range of -40°C to
+85°C. The ISL28134 is available in an industry standard pinout
SOIC package.
Applications
• Medical Instrumentation
• Sensor Gain Amps
• Precision Low Drift, Low Frequency ADC Drivers
• Precision Voltage Reference Buffers
• Thermopile, Thermocouple, and other Temperature Sensors
Front-end Amplifiers
• Inertial Sensors
• Process Control Systems
• Weight Scales and Strain Gauge Sensors
Features
• Rail-to-Rail Inputs and Outputs
- CMRR @ V_CM = 0.1V beyond V_S . . . . . . . . . . . . .135dB, typ.
- V_OH and V_OL . . . . . . . . . . . . . . . . . . . . . . 10mV from V_S, typ.
• No 1/f Noise Corner Down to 0.1Hz
- Input Noise Voltage . . . . . . . . . . . . . . . . .10 nV/√Hz @ 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
• Low I_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .675µA, typ.
• Wide Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5MHz
• Operating Temperature Range
- Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
- Full Industrial (Coming Soon) . . . . . . . . . .-40°C to +125°C
• Packaging
- Single: SOIC, SOT-23, µTDFN (1.6mmx1.6mm)
Related Literature
• See AN1641, “ISL28134 Evaluation Board Manual”
• See AN1560, “Making Accurate Voltage Noise and Current
Noise Measurements on Operational Amplifiers Down to
0.1Hz”
SINGLE SUPPLY
HIGH GAIN AMPLIFIER
3V
A_V = 10,000 V/V
1MΩ
100
-
100
+
ANALOG
SENSOR INPUT ^1MΩ
0.1µ
V_OUT
RL
GND
FIGURE 1. TYPICAL APPLICATION
1400
1200
1000
V_s = ±2.5V
V_CM = 0V
T = -40°C to +85°C
N = 2330
800
600
400
200
0
-2.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5
V_OS (µV)
FIGURE 2. V_OS HISTOGRAM V_S = 5V
June 8, 2011
1
FN6957.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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