The MAX6126 is an ultra-low-noise, high-precision, low-dropout voltage reference. It features curvature-correction circuitry and high-stability, laser-trimmed, thin-film resistors resulting in a temperature coefficient of 3ppm/°C (max) and an initial accuracy of ±0.02% (max). The proprietary low-noise reference architecture produces low flicker noise of 1.3µVP-P and wideband noise as low as 60nV/√Hz (2.048V output) without increased supply current. Adding a 0.1µF capacitor at the noise reduction pin improves wideband noise to 35nV/√Hz and AC power-supply rejection. The MAX6126 operates from a wide 2.7V to 12.6V supply voltage range with load-regulation specifications guaranteed to be less than 0.025Ω for sink and source currents up to 10mA. It is available over the automotive temperature range of -40°C to +125°C and typically draws 380µA of supply current. The MAX6126 is stable with 0.1µF to 10µF of load capacitance.
The MAX6126 series provides ultra‑high‑precision, ultra‑low‑noise voltage references featuring curvature‑correction circuitry and laser‑trimmed thin‑film resistors. It operates over a wide supply range of 2.7 V to 12.6 V and is available in 8‑pin UMAX and 8‑pin SO packages.
Key specifications include a 3 ppm/°C (max) temperature coefficient, +0.02 % (max) initial accuracy, low dropout voltage of 200 mV (max), and a typical quiescent supply current of 380 µA. The device supports multiple output voltages from 2.048 V to 5.000 V and offers low noise performance of 1.3 µVp‑p (0.1 Hz‑10 Hz) and 60 nV/√Hz at 1 kHz for the 2.048 V version.
| Temperature Coefficient | 3 ppm/°C (max) |
|---|---|
| Initial Accuracy | +0.02 % (max) |
| Dropout Voltage | 200 mV (max) |
| Quiescent Supply Current | 380 µA typical |
| Supply Voltage Range | 2.7 V to 12.6 V |
| Noise Voltage (1 kHz, 2.048 V output) | 60 nV/√Hz |
The device typically draws 380 µA of supply current.
The noise voltage is 60 nV/√Hz at 1 kHz.