Intersil MICROPOWER VOLTAGE REFERENCE
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Isl21060 Voltage Reference For Accurate, Active Loads For Sensor Front-Ends
Force and sense connections, Kelvin connections, offer a method of eliminating the effects of voltage drops in circuit wires. The Kelvin connection overcomes the problem by including the wire resistance within the forcing loop of the voltage reference and sensing the load voltage.
A copper trace with a stray resistance of 1Ω develops an error of 1mV/mA and introduces a TC of 4V/mA/°C. For a 2.5V reference, this corresponds to an accuracy degradation of 0.04% and a TC of 1.6 ppm/°C.
Applications
- Portable medical
- Data Acquisition
- High Resolution A/D and D/A
- Digital Meters
- Bar Code Scanners
- Battery Management/Montitoring
- Industrial/Instrumentation Equipment
Grade | Initial Accuracy | Temp | Price @ 1ku | ESD (HBM) |
|---|---|---|---|---|
B – Grade | 1.0 mV | 10 ppm/°C | $2.65 | 5.5kV |
C – Grade | 2.5 mV | 25 ppm/°C | $0.95 | 5.5kV |
