Analog Devices Inc

LT6657, Low-Noise, Buffered Voltage Reference

Analog Devices features the industry’s lowest drift bandgap voltage reference

Image of Analog Devices LT6657 Low Noise, Buffered Voltage ReferenceThe LT6657 from Analog Devices is a precision voltage reference that combines robust operating characteristics with extremely low drift and low noise. With advanced curvature compensation, this bandgap reference achieves 1.5 ppm/°C drift with predictable temperature behavior, and an initial voltage accuracy of 0.1%. It also offers 0.5 ppmP-P noise and very low temperature cycling hysteresis.

The LT6657 is a low-dropout reference that can be powered from as little as 50 mV above the output voltage, up to 40 V. The buffered output supports ±10 mA of output drive with low output impedance and precise load regulation. The high sink current capability allows operation as a negative voltage reference with the same precision as a positive reference. This part is safe under reverse battery conditions, and includes current protection when the output is short-circuited and thermal shutdown for overload conditions. A shutdown is included to allow power reduction while enabling a quick turn-on.

The LT6657 is fully specified over the temperature range of -40°C to 125°C. It is available in the 8-lead MSOP package.

Thumbnail of Analog Devices LT6657 Voltage Reference: Performance Plus Features VideoVideo:

LT6657 Voltage Reference: Performance Plus Features

 

LT6657, Low-Noise, Buffered Voltage Reference Diagram and Graph

Features
  • Low drift
    • A grade: 1.5 ppm/°C (max.)
    • B grade: 3 ppm/°C (max.)
  • Low noise
    • 0.5 ppmP-P (0.1 Hz to 10 Hz)
    • 0.8 ppmRMS (10 Hz to 1 kHz)
  • Wide supply range up to 40 V
  • Sources and sinks: 10 mA (min.)
  • Line regulation: 0.2 ppm/V
  • Load regulation: 0.7 ppm/mA
  • Reverse supply protection
  • Reverse output protection
  • Low-power shutdown: <4 μA (max.)
  • Thermal protection
  • Can operate in shunt mode
  • Configurable as a negative reference
  • Available output voltage options: 2.5 V, 3 V, 5 V
  • MSOP-8 package
Applications
  • High-temperature industrial
  • High-resolution data acquisition systems
  • Instrumentation and process control
  • Automotive control and monitoring
  • Medical equipment
  • Shunt and negative-voltage references

LT6657 Low Noise, Buffered Voltage Reference

ImageManufacturer Part NumberDescriptionToleranceVoltage - InputAvailable QuantityPriceView Details
IC VREF SERIES 0.1% 8MSOPLT6657AHMS8-2.5#PBFIC VREF SERIES 0.1% 8MSOP±0.1%3V ~ 40V487 - Immediate$21.52View Details
IC VREF SERIES 0.1% 8MSOPLT6657BHMS8-2.5#PBFIC VREF SERIES 0.1% 8MSOP±0.1%3V ~ 40V588 - Immediate$14.39View Details
IC VREF SERIES 0.1% 8MSOPLT6657BHMS8-3#PBFIC VREF SERIES 0.1% 8MSOP±0.1%3.5V ~ 40V134 - Immediate$14.39View Details
IC VREF SERIES 0.1% 8MSOPLT6657BHMS8-5#PBFIC VREF SERIES 0.1% 8MSOP±0.1%5.5V ~ 40V227 - Immediate$14.39View Details
IC VREF SERIES 0.1% 8MSOPLT6657AHMS8-3#PBFIC VREF SERIES 0.1% 8MSOP±0.1%3.5V ~ 40V224 - Immediate$21.52View Details
IC VREF SERIES 0.1% 8MSOPLT6657AHMS8-5#PBFIC VREF SERIES 0.1% 8MSOP±0.1%5.5V ~ 40V320 - Immediate$21.52View Details
Published: 2016-07-15

Related Videos

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LT6657 Ultra-Stable Bandgap Voltage References Analog Devices' LT6657 is a precision voltage reference that combines robust operating characteristics with extremely low drift and low noise.