Maxim Integrated Precision Precision Voltage Reference 2.5V 0.06% 8-Pin SO, MAX6143AASA25+

Wide (VOUT + 2V) to +40V Supply Voltage Range
Excellent Temperature Stability: 3ppm/°C (max)
Tight Initial Accuracy: 0.05% (max)
Low Noise: 3.8μVP-P (typ at 2.5V Output)
Sources up to 30mA Output Current
Low Supply Current: 450μA (max at +25°C)
Low 0.01μA Shutdown Current
Linear Temperature Transducer Voltage Output
+2.5V, +3.3V, +4.096V, +5.0V, or +10V Output Voltages
Wide Operating Temperature Range: -40°C to +125°C
No External Capacitors Required for Stability
Applications
A/D Converters
D/A Converters
Digital Voltmeters
Threshold Detectors
Voltage Regulators