Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage References

Please check latest availability status for a specific part variant.


The MAX6225/MAX6241/MAX6250 are low-noise, precision voltage references with extremely low 1ppm/°C temperature coefficients and excellent ±0.02% initial accuracy. These devices feature buried-zener technology for lowest noise performance. Load-regulation specifications are guaranteed for source and sink currents up to 15mA. Excellent line and load regulation and low output impedance at high frequency make them ideal for high-resolution data-conversion systems up to 16 bits.

The MAX6225 is set for 2.500V output, the MAX6241 is set for 4.096V output, and the MAX6250 is set for 5.000V output. All three devices provide for the option of external trimming and noise reduction.
MAX6225, MAX6241, MAX6250: Typical Operating Circuit MAX6225, MAX6241, MAX6250: Typical Operating Circuit Enlarge+

Key Features

  • Low 1.0ppm/°C Temperature Coefficient
  • Very Low 1.5µVp-p Noise (0.1Hz to 10Hz)
  • ±0.02% Initial Accuracy
  • ±15mA Output Source and Sink Current
  • Low, 18mW Power Consumption (MAX6225)
  • Industry-Standard Pinout
  • Optional Noise Reduction and Voltage Trim
  • Excellent Transient Response
  • 8-Pin SO Package Available
  • Low 20ppm/1000h Long-Term Stability
  • Stable for All Capacitive Loads


  • A/D Converters
  • Automated Test Equipment (ATE)
  • Digital Voltmeters
  • High-Accuracy Industrial and Process Control
  • High-Accuracy Reference Standard
  • High-Resolution Analog-to-Digital
  • Precision Current Sources

See parametric specs for Voltage References (171)

Part NumberVOUT
Temp. Coeff.
Initial Accuracy
(% max)
Calibration MethodISUPPLY
Noise 0.1Hz to 10Hz
Oper. Temp.
max@ +25°CmaxminmaxtypSee Notes
MAX6225A 2.520.04Trim30008362.8
-55 to +125
-40 to +85
0 to +70
$5.90 @1k
MAX6225B 2.550.1230002.8
$2.99 @1k
MAX6241A 4.09620.0232002.4
$5.90 @1k
MAX6241B 4.09650.132002.4
$2.90 @1k
MAX6250A 520.0233003
$5.81 @1k
MAX6250B 550.133003
$3.30 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Product Reliability Reports: MAX6250.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


Related Resources