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 guaranteed 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, temperature warning circuits, and other applications.
The Maxim MAX873, MAX875 and MAX876 are precision voltage reference devices offering +2.5 V, +5 V and +10 V outputs with very low temperature drift, low noise and low quiescent current. They are suited for 12‑bit data‑acquisition systems, digital multimeters, portable test equipment and other low‑power applications.
The document provides absolute maximum ratings, electrical characteristics, typical operating curves, pin configuration, and package dimensions. It also lists ordering information for the various device variants and includes a revision history.
| Output Voltage | 2.5 V (MAX873), 5 V (MAX875), 10 V (MAX876) |
|---|---|
| Initial Accuracy (max) | ±1.5 mV (2.5 V), ±2.0 mV (5 V), ±3.0 mV (10 V) |
| Temperature Coefficient | 7 ppm/°C (max) |
| Quiescent Current | 450 nA (max) |
| Output Noise (10 Hz‑1 kHz) | 3.8 µV RMS (2.5 V), 9 µV RMS (5 V), 18 µV RMS (10 V) |
| Load Regulation | 15 ppm/mA (max) |
| Line Regulation | 4 ppm/V (max) |
| Supply Voltage Range (MAX873) | +4.5 V to +18 V |
| Short‑Circuit Output Current | 60 mA |
| Vout Adjust Range | +100 mV (MAX873), +300 mV (MAX875), +600 mV (MAX876) |
| Temperature Sensitivity (TEMP pin) | 1.9 mV/°C (MAX873), 2.1 mV/°C (MAX875/876) |
The MAX873 operates with a supply voltage from +4.5 V to +18 V.
The MAX875 has a typical quiescent current of about 320 µA.
All three devices can source up to 60 mA when the output is shorted to ground.
The MAX876 has a temperature coefficient of up to 7 ppm/°C (max).