The MAX873/MAX875/MAX876 precision 2.5V, 5V, and 10V references offer excellent accuracy and very low power consumption. Extremely low temperature drift combined with excellent line and load regulation permit stable operation over a wide range of electrical and environmental conditions. Operation for the MAX873 is guar- anteed with a +4.5V supply, making the part ideal in systems running from a +5V ±10% supply. Low 10Hz to 1kHz noise—typically 3.8µVRMS, 9µVRMS, and 18µVRMS, respectively, for the MAX873, MAX875, MAX876—make the parts suitable for 12-bit data-acquisition systems. A TRIM pin facilitates adjustment of the reference voltage over a ±6% range, using only a 100kΩ potentiometer. A voltage output proportional to temperature provides a source for temperature compensation circuits, tempera- ture warning circuits, and other applications.
The MAX873, MAX875, and MAX876 are precision voltage‑reference devices that provide preset output voltages of +2.5 V, +5 V, and +10 V with very low temperature drift and low noise. They operate from a wide supply range and include a TRIM pin for fine adjustment and a TEMP pin that outputs a voltage proportional to die temperature.
Key features include a typical quiescent current of 320 µA, source capability of up to 10 mA (30 mA typical) and sink capability of 2 mA, low‑noise performance (3.8 µV P‑P at 2.5 V), and tight line and load regulation (4 ppm/V line, 15 ppm/mA load). The devices are specified for operation from –40 °C to +85 °C and are suitable for data‑acquisition systems, digital multimeters, and low‑power test equipment.
| Output Voltage | +2.5 V / +5 V / +10 V |
|---|---|
| Temperature Coefficient | 7 ppm/°C (max) |
| Quiescent Supply Current | 320 µA (typ) |
| Noise (2.5 V output) | 3.8 µV P‑P (typ) |
| Load Regulation | 15 ppm/mA (max) |
| Line Regulation | 4 ppm/V (max) |
| Supply Voltage Range (MAX873) | +4.5 V to +18 V |
| Source / Sink Current | Sources up to 10 mA, Sinks up to 2 mA |
The devices provide preset output voltages of +2.5 V, +5 V, and +10 V.
Typical quiescent supply current is 320 µA.
It can source up to 10 mA and sink up to 2 mA.
Yes, the TEMP pin outputs a voltage proportional to the die temperature.