3ppm/°C, Low-Power, Low-Dropout Voltage Reference

Low-Power, Low-Dropout Voltage Reference has 3ppm/°C Drift and Fits in Tiny µMAX® Package

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The MAX6133 high-precision, low-power, low-dropout voltage reference features a low 3ppm/°C (max) temperature coefficient and a low dropout voltage (200mV, max). This series-mode device features bandgap technology for low-noise performance and excellent accuracy. Load regulation specifications are guaranteed for source currents up to 15mA. The laser-trimmed, high-stability thin-film resistors, together with post-package trimming, guarantee an excellent initial accuracy specification (0.04%, max). The MAX6133 is a series voltage reference and consumes only 40µA of supply current (virtually independent of supply voltage). Series-mode references save system power and use minimal external components compared to 2-terminal shunt references.

The MAX6133 is available in 8-pin µMAX and SO packages. The unique blend of tiny packaging and excellent precision performance make these parts ideally suited for portable and communication applications.
MAX6133: Typical Operating Circuit MAX6133: Typical Operating Circuit Enlarge+

Key Features

  • Low Temperature Coefficient
    • 3ppm/°C (max), SO
    • 5ppm/°C (max), µMAX
  • Tiny 5mm x 3mm µMAX Package
  • Low 200mV (max) Dropout Voltage
  • Low 40µA Quiescent Current
  • ±0.04% (max) Initial Accuracy
  • Low 16µVP-P Noise (0.1Hz to 10Hz) (2.5V Output)
  • 15mA Output Source-Current Capability
  • Wide 2.7V to 12.6V Supply Voltage
  • Excellent Line (30µV/V, max) and Load (0.05mV/mA, max) Regulation


  • A/D and D/A Converters
  • Handheld Instruments (PDAs, Palmtops)
  • High-Accuracy Industrial and Process Control
  • Power Supplies
  • Precision Regulators
Part NumberVOUT
Temp. Coeff.
Initial Accuracy
(% max)
Noise 0.1Hz to 10Hz
Oper. Temp.
max@ +25°Cmaxminmaxtyp
50.06602.712.616-40 to +125
MAX6133A-SOIC 30.04
MAX6133B-SOIC 50.08
See All Voltage References (170)
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.

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

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.

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Related Resources

Low-Power, Low-Drift, Low-Noise Voltage Reference

  • ±0.04% Initial Accuracy
  • 10ppm/°C (Max) Temperature Drift
  • 12μVPP Noise (0.1Hz to 10Hz) at 2.5V

Low-Power, Low-Drift, Low-Noise Voltage Reference

  • ±0.04% Initial Accuracy
  • 10ppm/°C (Max) Temperature Drift
  • 12μVPP Noise (0.1Hz to 10Hz) at 2.5V

Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference

  • 8-pin Hermetically Sealed Ceramic Package Reduces System Board Space
  • Ultra-Low 1.45µVP-P Noise (0.1Hz to 10Hz, 2.5V Output)
  • Ultra-Low 5ppm/°C (Max) Temperature Coefficient