TI REF200AU/2K5

The REF200 combines three circuit building-blocks on a single monolithic chip: two 100-µA current sources and a current mirror. The sections are dielectrically isolated, making them completely independent. Also, because the current sources are two-terminal devices, they can be used equally well as current sinks. The performance of each section is individually measured and laser-trimmed to achieve high accuracy at low cost.

• Completely Floating: No Power Supply or Ground Connections
• High Accuracy: 100 µA ±0.5%
• Low Temperature Coefficient: ±25 ppm/°C
• Wide Voltage Compliance: 2.5 V to 40 V
• Includes Current Mirror

• Sensor Excitation
• Biasing Circuitry
• Offsetting Current Loops
• Low Voltage References
• Charge-pump Circuitry
• Hybrid Microcircuits