High-Precision Voltage Reference with Temperature Sensor

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The MAX6143 is a low-noise, high-precision voltage reference. The device features a proprietary temperature-coefficient curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low 3ppm/°C temperature coefficient and excellent ±0.06% initial accuracy. The MAX6143 provides a TEMP output where the output voltage is proportional to die temperature, making the device suitable for a wide variety of temperature-sensing applications. The device also provides a TRIM input, allowing fine trimming of the output voltage with a resistive-divider network. Low temperature drift and low noise make the MAX6143 ideal for use with high-resolution A/D or D/A converters.

The MAX6143 provides accurate preset +2.5V, +3.3V, +4.096V, +5.0V, and +10V reference voltages and accepts input voltages up to +40V. The device draws 340µA of supply current and sources 30mA or sinks 2mA of load current. The MAX6143 uses bandgap technology for low-noise performance and excellent accuracy. The MAX6143 does not require an output bypass capacitor for stability, and is stable with capacitive loads up to 100µF. Eliminating the output bypass capacitor saves valuable board area in space-critical applications.

The MAX6143 is available in an 8-pin SO package and operates over the automotive (-40°C to +125°C) temperature range.

Key Features

  • 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


  • A/D Converters
  • D/A Converters
  • Digital Voltmeters
  • Threshold Detectors
  • Voltage Regulators

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: MAX6143.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.

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