View max6325 datasheet:

19-1203; Rev 1; 1/01 1ppm/°C, Low-Noise, +2.5V/+4.096V/+5V Voltage References General Description ____________________________Features The MAX6325/MAX6341/MAX6350 are low-noise, preci- ¦ Ultra Low, 1ppm/°C Max Tempco sion voltage references with extremely low, 0.5ppm/°C ¦ Very Low, 1.5µVp-p Noise (0.1Hz to 10Hz) typical temperature coefficients and excellent, ±0.02% (MAX6325) initial accuracy. These devices feature buried-zener technology for lowest noise performance. Load-regula- ¦ ±0.02% Initial Accuracy (MAX6350) tion specifications are guaranteed for source and sink ¦ ±15mA Output Source and Sink Current currents up to 15mA. Excellent line and load regulation and low output impedance at high frequencies make ¦ Low, 18mW Power Consumption (MAX6325) them ideal for high