MAX6126[基准源].pdf

19-2647; Rev 4; 7/04 Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference General Description Features M The MAX6126 is an ultra-low-noise, high-precision, low- ♦ Ultra-Low 1.3µVP-P Noise (0.1Hz to 10Hz, 2.048V A X dropout voltage reference. This family of voltage refer- Output) ences feature curvature-correction circuitry and high-stability, laser-trimmed, thin-film resistors that ♦ Ultra-Low 3ppm/°C (max) Temperature Coefficient 6 result in 3ppm/°C (max) temperature coefficients and ♦ ±0.02% (max) Initial Accuracy 1 an excellent ±0.02% (max) initial accuracy. The propri- ♦ Wide (V + 200mV) to 12.6V Supply Voltage 2 6 etary low-noise reference architecture produces a low OUT flicker noise of 1.3µVP-P and wideband noise as low as Range 60nV/√Hz (2.048V output) without the increased supply ♦ Low 200mV (max) Dropout Voltage current usually found in low-noise references. Improve wideband noise to 35nV/√Hz and AC power-supply ♦ 380µA Quiescent Supply Current rejection by adding a 0.1µF capacitor at the noise ♦ 10mA Sink/Source-Current Capability reduction pin. The MAX6126 series mode reference operates from a wide 2.7V to 12.6V supply voltage ♦ Stable with CLOAD = 0.1µF to 10µF range and load-regul