The MAX6143 is a low-noise, high-precision voltage reference. The device features a proprietary temperature-coefficient curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low 3ppm/°C temperature coefficient and excellent ±0.06% initial accuracy. The MAX6143 provides a TEMP output where the output voltage is proportional to die temperature, making the device suitable for a wide variety of temperature-sensing applications. The device also provides a TRIM input, allowing fine trimming of the output voltage with a resistive-divider network. Low temperature drift and low noise make the MAX6143 ideal for use with high-resolution A/D or D/A converters. The MAX6143 provides accurate preset +2.5V, +3.3V, +4.096V, +5.0V, and +10V reference voltages and accepts input voltages up to +40V. The device draws 340µA of supply current and sources 30mA or sinks 2mA of load current. The active-low shutdown feature (SHDN) reduces supply current to 0.01µA. The MAX6143 uses bandgap technology for low-noise performance and excellent accuracy. The MAX6143 does not require an output bypass capacitor for stability, and is stable with capacitive loads up to 100µF. Eliminating the output bypass capacitor saves valuable board area in space-critical applications. The MAX6143 is available in an 8-pin SO package and operates over the automotive (-40°C to +125°C) temperature range.
The MAX6143 voltage reference offers five preset reference voltages (+2.5 V, +3.3 V, +4.096 V, +5.0 V, +10 V) and a temperature‑proportional output (TEMP). It features a proprietary curvature‑correction circuit and laser‑trimmed thin‑film resistors that give a very low 3 ppm/°C temperature coefficient and ±0.05 % initial accuracy.
The device operates from –40 °C to +125 °C, accepts up to +40 V on the input, and draws only 340 µA quiescent current. An active‑low shutdown pin reduces supply current to 0.01 µA. It is stable without an external output capacitor and can drive capacitive loads up to 100 µF. The part is supplied in an 8‑pin SO package.
| Reference Voltages | +2.5 V, +3.3 V, +4.096 V, +5.0 V, +10 V |
|---|---|
| Temperature Coefficient | 3 ppm/°C (max) |
| Quiescent Supply Current | 340 µA |
| Shutdown Supply Current | 0.01 µA (typ) |
| Operating Temperature Range | -40 °C to +125 °C |
| Input Voltage Range | up to +40 V |
| Load Current Capability | Sources 30 mA, sinks 2 mA |
| External Capacitor Requirement | None required; stable up to 100 µF load |
| Package | 8‑pin SO |
It provides five preset reference voltages: +2.5 V, +3.3 V, +4.096 V, +5.0 V, and +10 V.
The device has a temperature coefficient of 3 ppm/°C (maximum).
In shutdown mode the typical supply current is 0.01 µA.
No, it is stable without an external capacitor and can drive loads up to 100 µF.