LT6656 Series

1μA Precision Series Voltage Reference

Catalog

1μA Precision Series Voltage Reference

Part	Temperature Coefficient	Voltage - Input [Max]	Voltage - Input [Min]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Tolerance	Current - Output	Current - Supply	Reference Type	Supplier Device Package	Output Type	Noise - 0.1Hz to 10Hz	Voltage - Output (Min/Fixed)	Noise - 10Hz to 10kHz
Analog Devices LT6656BCDC-3#TRMPBF	20 ppm/°C	18 V	3.5 V	Surface Mount	70 °C	0 °C	6-WFDFN Exposed Pad	0.2 %	5 mA	1.5 µA	Series	6-DFN (2x2)	1.81 mOhm	30 µVpp/V
Analog Devices LT6656AIDC-4.096#TRPBF	10 ppm/°C	18 V	4.596 V	Surface Mount	85 °C	-40 °C	6-WFDFN Exposed Pad	0.1 %	5 mA	1.5 µA	Series	6-DFN (2x2)	1.81 mOhm	30 µVpp/V	4.096 V
Analog Devices LT6656ACS6-2.5#TRMPBF	10 ppm/°C	18 V	3 V	Surface Mount	70 °C	0 °C	SOT-23-6 Thin TSOT-23-6	0.05 %	5 mA	1.5 µA	Series	TSOT-23-6	1.81 mOhm	30 µVpp/V	2.5 V	80 µVrms
Analog Devices LT6656BIDC-4.096#TRPBF	20 ppm/°C	18 V	4.596 V	Surface Mount	85 °C	-40 °C	6-WFDFN Exposed Pad	0.2 %	5 mA	1.5 µA	Series	6-DFN (2x2)	1.81 mOhm	30 µVpp/V	4.096 V
Analog Devices LT6656BCS6-4.096#TRMPBF	20 ppm/°C	18 V	4.596 V	Surface Mount	70 °C	0 °C	SOT-23-6 Thin TSOT-23-6	0.1 %	5 mA	1.5 µA	Series	TSOT-23-6	1.81 mOhm	30 µVpp/V	4.096 V
Analog Devices LT6656BIDC-4.096#TRMPBF	20 ppm/°C	18 V	4.596 V	Surface Mount	85 °C	-40 °C	6-WFDFN Exposed Pad	0.2 %	5 mA	1.5 µA	Series	6-DFN (2x2)	1.81 mOhm	30 µVpp/V	4.096 V
Analog Devices LT6656BIDC-3#TRPBF	20 ppm/°C	18 V	3.5 V	Surface Mount	85 °C	-40 °C	6-WFDFN Exposed Pad	0.2 %	5 mA	1.5 µA	Series	6-DFN (2x2)	1.81 mOhm	30 µVpp/V
Analog Devices LT6656AIS6-5#TRMPBF	10 ppm/°C	18 V	5.5 V	Surface Mount	85 °C	-40 °C	SOT-23-6 Thin TSOT-23-6	0.05 %	5 mA	1.5 µA	Series	TSOT-23-6	1.81 mOhm	30 µVpp/V	5 V	140 µVrms
Analog Devices LT6656BCS6-1.25#TRMPBF	20 ppm/°C	18 V	2.2 V	Surface Mount	70 °C	0 °C	SOT-23-6 Thin TSOT-23-6	0.1 %	5 mA	1.5 µA	Series	TSOT-23-6	1.81 mOhm	30 µVpp/V	1.25 V	50 µVrms
Analog Devices LT6656BIDC-5#TRPBF	20 ppm/°C	18 V	5.5 V	Surface Mount	85 °C	-40 °C	6-WFDFN Exposed Pad	0.2 %	5 mA	1.5 µA	Series	6-DFN (2x2)	1.81 mOhm	30 µVpp/V	5 V	140 µVrms

Catalog

1μA Precision Series Voltage Reference

Key Features

• Ultralow Supply Current: 850nA

• Low DriftA Grade: 10 ppm/°C MaxB Grade: 20 ppm/°C Max

• A Grade: 10 ppm/°C Max

• B Grade: 20 ppm/°C Max

• High AccuracyA Grade: 0.05% MaxB Grade: 0.1% Max

• 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, 2.8V, 3V, 3.3V, 4.096V and 5V

• Available in Low Profile (1mm) ThinSOT™, (2mm × 2mm) DFN and High Stability Hermetic (5mm × 5mm) LS8 Packages

Description

The LT6656 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.APPLICATIONSPrecision A/D and D/A ConvertersPortable Gas MonitorsBattery- or Solar-Powered SystemsPrecision RegulatorsLow Voltage Signal ProcessingMicropower Remote Sensing