LT6656 - 1μA Precision Series Voltage Reference

The LT®6656 is a tiny precision voltage reference that draws less than 1μA of supply current and can operate with a supply voltage within 10mV of the output voltage. The LT6656 offers an initial accuracy of 0.05% and temperature drift of 10ppm/°C. The combined low power and precision characteristics are ideal for portable and battery powered instrumentation.

The LT6656 can supply up to 5mA of output drive with 65ppm/mA of load regulation, allowing it to be used as the supply voltage and the reference input to a low power ADC. The LT6656 can accept a supply voltage up to 18V and withstand the reversal of the input connections.

The LT6656 output is stable with 1μF or larger output capacitance and operates with a wide range of output capacitor ESR.

This reference is fully specified for operation from –40°C to 85°C, and is functional over the extreme temperature range of –55°C to 125°C. Low hysteresis and a consistent temperature drift are obtained through advanced design, processing and packaging techniques.

The LT6656 is offered in the 6-lead SOT-23, (2mm × 2mm) DFN, and 8-lead LS8 Packages. The LS8 is a 5mm × 5mm surface mount hermetic package that provides outstanding stability.

Features
  • Ultralow Supply Current: 850nA
  • Low Drift A Grade: 10 ppm/°C Max B Grade: 20 ppm/°C Max
  • High Accuracy A Grade: 0.05% Max B Grade: 0.1% Max
  • Long-Term Drift: 15ppm/√kHr (LS8 Package)
  • No Humidity Sensitivity (LS8 Package)
  • High Output Drive Current: 5mA Min
  • Low Dropout Voltage: 10mV Max
  • Fully Specified from –40°C to 85°C
  • Operational from –55°C to 125°C
  • Wide Supply Range to 18V
  • Reverse Input/Output Protection
  • Available Output Voltage Options: 1.25V, 2.048V, 2.5V, 3V, 3.3V, 4.096V and 5V
  • Available in Low Profile (1mm) ThinSOT™, (2mm × 2mm) DFN and High Stability Hermetic (5mm × 5mm) LS8 Packages
Typical Application
LT6656 Typical Application
LT6656 Typical Application
Applications
  • Precision A/D and D/A Converters
  • Portable Gas Monitors
  • Battery- or Solar-Powered Systems
  • Precision Regulators
  • Low Voltage Signal Processing
  • Micropower Remote Sensing
Packaging
LT6656 Package Drawing
LT6656 Package Drawing
LT6656 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT6656ACDC-1.25#PBF2x2 DFN-6C$3.76
LT6656ACDC-1.25#TRMPBF2x2 DFN-6C$3.76$2.75
LT6656ACDC-1.25#TRPBF2x2 DFN-6C$3.76$2.70
LT6656ACDC-2.048#PBF2x2 DFN-6C$3.76
LT6656ACDC-2.048#TRMPBF2x2 DFN-6C$3.76$2.75
LT6656ACDC-2.048#TRPBF2x2 DFN-6C$3.76$2.70
LT6656ACDC-2.5#PBF2x2 DFN-6C$3.76
LT6656ACDC-2.5#TRMPBF2x2 DFN-6C$3.76$2.75
LT6656ACDC-2.5#TRPBF2x2 DFN-6C$3.76$2.70
LT6656ACDC-3.3#PBF2x2 DFN-6C$3.76
LT6656ACDC-3.3#TRMPBF2x2 DFN-6C$3.76$2.75
LT6656ACDC-3.3#TRPBF2x2 DFN-6C$3.76$2.70
LT6656ACDC-3#PBF2x2 DFN-6C$3.76
LT6656ACDC-3#TRMPBF2x2 DFN-6C$3.76$2.75
LT6656ACDC-3#TRPBF2x2 DFN-6C$3.76$2.70
LT6656ACDC-4.096#PBF2x2 DFN-6C$3.76
LT6656ACDC-4.096#TRMPBF2x2 DFN-6C$3.76$2.75
LT6656ACDC-4.096#TRPBF2x2 DFN-6C$3.76$2.70
LT6656ACDC-5#PBF2x2 DFN-6C$3.76
LT6656ACDC-5#TRMPBF2x2 DFN-6C$3.76$2.75
LT6656ACDC-5#TRPBF2x2 DFN-6C$3.76$2.70
LT6656ACS6-1.25#PBFSOT-23C$3.42
LT6656ACS6-1.25#TRMPBFSOT-23C$3.42$2.50
LT6656ACS6-1.25#TRPBFSOT-23C$3.42$2.45
LT6656ACS6-2.048#PBFSOT-23C$3.42
LT6656ACS6-2.048#TRMPBFSOT-23C$3.42$2.50
LT6656ACS6-2.048#TRPBFSOT-23C$3.42$2.45
LT6656ACS6-2.5#PBFSOT-23C$3.42
LT6656ACS6-2.5#TRMPBFSOT-23C$3.42$2.50
LT6656ACS6-2.5#TRPBFSOT-23C$3.42$2.45
LT6656ACS6-3.3#PBFSOT-23C$3.42
LT6656ACS6-3.3#TRMPBFSOT-23C$3.42$2.50
LT6656ACS6-3.3#TRPBFSOT-23C$3.42$2.45
LT6656ACS6-3#PBFSOT-23C$3.42
LT6656ACS6-3#TRMPBFSOT-23C$3.42$2.50
LT6656ACS6-3#TRPBFSOT-23C$3.42$2.45
LT6656ACS6-4.096#PBFSOT-23C$3.42
LT6656ACS6-4.096#TRMPBFSOT-23C$3.42$2.50
LT6656ACS6-4.096#TRPBFSOT-23C$3.42$2.45
LT6656ACS6-5#PBFSOT-23C$3.42
LT6656ACS6-5#TRMPBFSOT-23C$3.42$2.50
LT6656ACS6-5#TRPBFSOT-23C$3.42$2.45
LT6656AIDC-1.25#PBF2x2 DFN-6I$4.21
LT6656AIDC-1.25#TRMPBF2x2 DFN-6I$4.21$3.07
LT6656AIDC-1.25#TRPBF2x2 DFN-6I$4.21$3.02
LT6656AIDC-2.048#PBF2x2 DFN-6I$4.21
LT6656AIDC-2.048#TRMPBF2x2 DFN-6I$4.21$3.07
LT6656AIDC-2.048#TRPBF2x2 DFN-6I$4.21$3.02
LT6656AIDC-2.5#PBF2x2 DFN-6I$4.21
LT6656AIDC-2.5#TRMPBF2x2 DFN-6I$4.21$3.07
LT6656AIDC-2.5#TRPBF2x2 DFN-6I$4.21$3.02
LT6656AIDC-3.3#PBF2x2 DFN-6I$4.21
LT6656AIDC-3.3#TRMPBF2x2 DFN-6I$4.21$3.07
LT6656AIDC-3.3#TRPBF2x2 DFN-6I$4.21$3.02
LT6656AIDC-3#PBF2x2 DFN-6I$4.21
LT6656AIDC-3#TRMPBF2x2 DFN-6I$4.21$3.07
LT6656AIDC-3#TRPBF2x2 DFN-6I$4.21$3.02
LT6656AIDC-4.096#PBF2x2 DFN-6I$4.21
LT6656AIDC-4.096#TRMPBF2x2 DFN-6I$4.21$3.07
LT6656AIDC-4.096#TRPBF2x2 DFN-6I$4.21$3.02
LT6656AIDC-5#PBF2x2 DFN-6I$4.21
LT6656AIDC-5#TRMPBF2x2 DFN-6I$4.21$3.07
LT6656AIDC-5#TRPBF2x2 DFN-6I$4.21$3.02
LT6656AILS8-1.25#PBFLS-8I$4.88$3.50
LT6656AIS6-1.25#PBFSOT-23I$3.42
LT6656AIS6-1.25#TRMPBFSOT-23I$3.83$2.80
LT6656AIS6-1.25#TRPBFSOT-23I$3.83$2.75
LT6656AIS6-2.048#PBFSOT-23I$3.83
LT6656AIS6-2.048#TRMPBFSOT-23I$3.83$2.80
LT6656AIS6-2.048#TRPBFSOT-23I$3.83$2.75
LT6656AIS6-2.5#PBFSOT-23I$3.83
LT6656AIS6-2.5#TRMPBFSOT-23I$3.83$2.80
LT6656AIS6-2.5#TRPBFSOT-23I$3.83$2.75
LT6656AIS6-3.3#PBFSOT-23I$3.83
LT6656AIS6-3.3#TRMPBFSOT-23I$3.83$2.80
LT6656AIS6-3.3#TRPBFSOT-23I$3.83$2.75
LT6656AIS6-3#PBFSOT-23I$3.83
LT6656AIS6-3#TRMPBFSOT-23I$3.83$2.80
LT6656AIS6-3#TRPBFSOT-23I$3.83$2.75
LT6656AIS6-4.096#PBFSOT-23I$3.83
LT6656AIS6-4.096#TRMPBFSOT-23I$3.83$2.80
LT6656AIS6-4.096#TRPBFSOT-23I$3.83$2.75
LT6656AIS6-5#PBFSOT-23I$3.83
LT6656AIS6-5#TRMPBFSOT-23I$3.83$2.80
LT6656AIS6-5#TRPBFSOT-23I$3.83$2.75
LT6656BCDC-1.25#PBF2x2 DFN-6C$2.44
LT6656BCDC-1.25#TRMPBF2x2 DFN-6C$2.44$1.79
LT6656BCDC-1.25#TRPBF2x2 DFN-6C$2.44$1.74
LT6656BCDC-2.048#PBF2x2 DFN-6C$2.44
LT6656BCDC-2.048#TRMPBF2x2 DFN-6C$2.44$1.79
LT6656BCDC-2.048#TRPBF2x2 DFN-6C$2.44$1.74
LT6656BCDC-2.5#PBF2x2 DFN-6C$2.44
LT6656BCDC-2.5#TRMPBF2x2 DFN-6C$2.44$1.79
LT6656BCDC-2.5#TRPBF2x2 DFN-6C$2.44$1.74
LT6656BCDC-3.3#PBF2x2 DFN-6C$2.44
LT6656BCDC-3.3#TRMPBF2x2 DFN-6C$2.44$1.79
LT6656BCDC-3.3#TRPBF2x2 DFN-6C$2.44$1.74
LT6656BCDC-3#PBF2x2 DFN-6C$2.44
LT6656BCDC-3#TRMPBF2x2 DFN-6C$2.44$1.79
LT6656BCDC-3#TRPBF2x2 DFN-6C$2.44$1.74
LT6656BCDC-4.096#PBF2x2 DFN-6C$2.44
LT6656BCDC-4.096#TRMPBF2x2 DFN-6C$2.44$1.79
LT6656BCDC-4.096#TRPBF2x2 DFN-6C$2.44$1.74
LT6656BCDC-5#PBF2x2 DFN-6C$2.44
LT6656BCDC-5#TRMPBF2x2 DFN-6C$2.44$1.79
LT6656BCDC-5#TRPBF2x2 DFN-6C$2.44$1.74
LT6656BCS6-1.25#PBFSOT-23C$2.44
LT6656BCS6-1.25#TRMPBFSOT-23C$2.44$1.79
LT6656BCS6-1.25#TRPBFSOT-23C$2.44$1.74
LT6656BCS6-2.048#PBFSOT-23C$2.44
LT6656BCS6-2.048#TRMPBFSOT-23C$2.44$1.79
LT6656BCS6-2.048#TRPBFSOT-23C$2.44$1.74
LT6656BCS6-2.5#PBFSOT-23C$2.44
LT6656BCS6-2.5#TRMPBFSOT-23C$2.44$1.79
LT6656BCS6-2.5#TRPBFSOT-23C$2.44$1.74
LT6656BCS6-3.3#PBFSOT-23C$2.44
LT6656BCS6-3.3#TRMPBFSOT-23C$2.44$1.79
LT6656BCS6-3.3#TRPBFSOT-23C$2.44$1.74
LT6656BCS6-3#PBFSOT-23C$2.44
LT6656BCS6-3#TRMPBFSOT-23C$2.44$1.79
LT6656BCS6-3#TRPBFSOT-23C$2.44$1.74
LT6656BCS6-4.096#PBFSOT-23C$2.44
LT6656BCS6-4.096#TRMPBFSOT-23C$2.44$1.79
LT6656BCS6-4.096#TRPBFSOT-23C$2.44$1.74
LT6656BCS6-5#PBFSOT-23C$2.44
LT6656BCS6-5#TRMPBFSOT-23C$2.44$1.79
LT6656BCS6-5#TRPBFSOT-23C$2.44$1.74
LT6656BIDC-1.25#PBF2x2 DFN-6I$2.79
LT6656BIDC-1.25#TRMPBF2x2 DFN-6I$2.79$2.03
LT6656BIDC-1.25#TRPBF2x2 DFN-6I$2.79$1.98
LT6656BIDC-2.048#PBF2x2 DFN-6I$2.79
LT6656BIDC-2.048#TRMPBF2x2 DFN-6I$2.79$2.03
LT6656BIDC-2.048#TRPBF2x2 DFN-6I$2.79$1.98
LT6656BIDC-2.5#PBF2x2 DFN-6I$2.79
LT6656BIDC-2.5#TRMPBF2x2 DFN-6I$2.79$2.03
LT6656BIDC-2.5#TRPBF2x2 DFN-6I$2.79$1.98
LT6656BIDC-3.3#PBF2x2 DFN-6I$2.79
LT6656BIDC-3.3#TRMPBF2x2 DFN-6I$2.79$2.03
LT6656BIDC-3.3#TRPBF2x2 DFN-6I$2.79$1.98
LT6656BIDC-3#PBF2x2 DFN-6I$2.79
LT6656BIDC-3#TRMPBF2x2 DFN-6I$2.79$2.03
LT6656BIDC-3#TRPBF2x2 DFN-6I$2.79$1.98
LT6656BIDC-4.096#PBF2x2 DFN-6I$2.79
LT6656BIDC-4.096#TRMPBF2x2 DFN-6I$2.79$2.03
LT6656BIDC-4.096#TRPBF2x2 DFN-6I$2.79$1.98
LT6656BIDC-5#PBF2x2 DFN-6I$2.79
LT6656BIDC-5#TRMPBF2x2 DFN-6I$2.79$2.03
LT6656BIDC-5#TRPBF2x2 DFN-6I$2.79$1.98
LT6656BILS8-1.25#PBFLS-8I$3.80$2.73
LT6656BIS6-1.25#PBFSOT-23I$2.79
LT6656BIS6-1.25#TRMPBFSOT-23I$2.79$2.03
LT6656BIS6-1.25#TRPBFSOT-23I$2.79$1.98
LT6656BIS6-2.048#PBFSOT-23I$2.79
LT6656BIS6-2.048#TRMPBFSOT-23I$2.79$2.03
LT6656BIS6-2.048#TRPBFSOT-23I$2.79$1.98
LT6656BIS6-2.5#PBFSOT-23I$2.79
LT6656BIS6-2.5#TRMPBFSOT-23I$2.79$2.03
LT6656BIS6-2.5#TRPBFSOT-23I$2.79$1.98
LT6656BIS6-3.3#PBFSOT-23I$2.79
LT6656BIS6-3.3#TRMPBFSOT-23I$2.79$2.03
LT6656BIS6-3.3#TRPBFSOT-23I$2.79$1.98
LT6656BIS6-3#PBFSOT-23I$2.79
LT6656BIS6-3#TRMPBFSOT-23I$2.79$2.03
LT6656BIS6-3#TRPBFSOT-23I$2.79$1.98
LT6656BIS6-4.096#PBFSOT-23I$2.79
LT6656BIS6-4.096#TRMPBFSOT-23I$2.79$2.03
LT6656BIS6-4.096#TRPBFSOT-23I$2.79$1.98
LT6656BIS6-5#PBFSOT-23I$2.79
LT6656BIS6-5#TRMPBFSOT-23I$2.79$2.03
LT6656BIS6-5#TRPBFSOT-23I$2.79$1.98
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