Signal Conditioning
Voltage References
Series Voltage References
Signal Conditioning
Voltage References
Micropower Voltage References
LT6656 - 1μA Precision Series Voltage Reference
Features
- 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 - Ultralow Supply Current: 850nA
- 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 - Thermal Hysteresis: 25ppm
- Low Profile (1mm) ThinSOT™ Package and
(2mm × 2mm) DFN Package
Typical Application
Description
The LT6656 is a tiny precision voltage reference that draws less than 1µA of supply current and can operatewith a supply voltage within 10mV of the output voltage. The LT6656 offers an initial accuracy of 0.05% and tem-
perature 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 and (2mm × 2mm) DFN Packages.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
SOT-23,DFN-6
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
|---|---|---|---|---|---|---|
| LT6656ACDC-1.25#PBF | DFN | 6 | C | $3.76 | View | |
| LT6656ACDC-1.25#TRMPBF | DFN | 6 | C | $3.76 | $2.75 | View |
| LT6656ACDC-1.25#TRPBF | DFN | 6 | C | $3.76 | $2.70 | View |
| LT6656ACDC-2.048#PBF | DFN | 6 | C | $3.76 | View | |
| LT6656ACDC-2.048#TRMPBF | DFN | 6 | C | $3.76 | $2.75 | View |
| LT6656ACDC-2.048#TRPBF | DFN | 6 | C | $3.76 | $2.70 | View |
| LT6656ACDC-2.5#PBF | DFN | 6 | C | $3.76 | View | |
| LT6656ACDC-2.5#TRMPBF | DFN | 6 | C | $3.76 | $2.75 | View |
| LT6656ACDC-2.5#TRPBF | DFN | 6 | C | $3.76 | $2.70 | View |
| LT6656ACDC-3#PBF | DFN | 6 | C | $3.76 | View | |
| LT6656ACDC-3#TRMPBF | DFN | 6 | C | $3.76 | $2.75 | View |
| LT6656ACDC-3#TRPBF | DFN | 6 | C | $3.76 | $2.70 | View |
| LT6656ACDC-3.3#PBF | DFN | 6 | C | $3.76 | View | |
| LT6656ACDC-3.3#TRMPBF | DFN | 6 | C | $3.76 | $2.75 | View |
| LT6656ACDC-3.3#TRPBF | DFN | 6 | C | $3.76 | $2.70 | View |
| LT6656ACDC-4.096#PBF | DFN | 6 | C | $3.76 | View | |
| LT6656ACDC-4.096#TRMPBF | DFN | 6 | C | $3.76 | $2.75 | View |
| LT6656ACDC-4.096#TRPBF | DFN | 6 | C | $3.76 | $2.70 | View |
| LT6656ACDC-5#PBF | DFN | 6 | C | $3.76 | View | |
| LT6656ACDC-5#TRMPBF | DFN | 6 | C | $3.76 | $2.75 | View |
| LT6656ACDC-5#TRPBF | DFN | 6 | C | $3.76 | $2.70 | View |
| LT6656ACS6-1.25#PBF | SOT | 6 | C | $3.42 | View | |
| LT6656ACS6-1.25#TRMPBF | SOT | 6 | C | $3.42 | $2.50 | View |
| LT6656ACS6-1.25#TRPBF | SOT | 6 | C | $3.42 | $2.45 | View |
| LT6656ACS6-2.048#PBF | SOT | 6 | C | $3.42 | View | |
| LT6656ACS6-2.048#TRMPBF | SOT | 6 | C | $3.42 | $2.50 | View |
| LT6656ACS6-2.048#TRPBF | SOT | 6 | C | $3.42 | $2.45 | View |
| LT6656ACS6-2.5#PBF | SOT | 6 | C | $3.42 | View | |
| LT6656ACS6-2.5#TRMPBF | SOT | 6 | C | $3.42 | $2.50 | View |
| LT6656ACS6-2.5#TRPBF | SOT | 6 | C | $3.42 | $2.45 | View |
| LT6656ACS6-3#PBF | SOT | 6 | C | $3.42 | View | |
| LT6656ACS6-3#TRMPBF | SOT | 6 | C | $3.42 | $2.50 | View |
| LT6656ACS6-3#TRPBF | SOT | 6 | C | $3.42 | $2.45 | View |
| LT6656ACS6-3.3#PBF | SOT | 6 | C | $3.42 | View | |
| LT6656ACS6-3.3#TRMPBF | SOT | 6 | C | $3.42 | $2.50 | View |
| LT6656ACS6-3.3#TRPBF | SOT | 6 | C | $3.42 | $2.45 | View |
| LT6656ACS6-4.096#PBF | SOT | 6 | C | $3.42 | View | |
| LT6656ACS6-4.096#TRMPBF | SOT | 6 | C | $3.42 | $2.50 | View |
| LT6656ACS6-4.096#TRPBF | SOT | 6 | C | $3.42 | $2.45 | View |
| LT6656ACS6-5#PBF | SOT | 6 | C | $3.42 | View | |
| LT6656ACS6-5#TRMPBF | SOT | 6 | C | $3.42 | $2.50 | View |
| LT6656ACS6-5#TRPBF | SOT | 6 | C | $3.42 | $2.45 | View |
| LT6656AIDC-1.25#PBF | DFN | 6 | I | $4.21 | View | |
| LT6656AIDC-1.25#TRMPBF | DFN | 6 | I | $4.21 | $3.07 | View |
| LT6656AIDC-1.25#TRPBF | DFN | 6 | I | $4.21 | $3.02 | View |
| LT6656AIDC-2.048#PBF | DFN | 6 | I | $4.21 | View | |
| LT6656AIDC-2.048#TRMPBF | DFN | 6 | I | $4.21 | $3.07 | View |
| LT6656AIDC-2.048#TRPBF | DFN | 6 | I | $4.21 | $3.02 | View |
| LT6656AIDC-2.5#PBF | DFN | 6 | I | $4.21 | View | |
| LT6656AIDC-2.5#TRMPBF | DFN | 6 | I | $4.21 | $3.07 | View |
| LT6656AIDC-2.5#TRPBF | DFN | 6 | I | $4.21 | $3.02 | View |
| LT6656AIDC-3#PBF | DFN | 6 | I | $4.21 | View | |
| LT6656AIDC-3#TRMPBF | DFN | 6 | I | $4.21 | $3.07 | View |
| LT6656AIDC-3#TRPBF | DFN | 6 | I | $4.21 | $3.02 | View |
| LT6656AIDC-3.3#PBF | DFN | 6 | I | $4.21 | View | |
| LT6656AIDC-3.3#TRMPBF | DFN | 6 | I | $4.21 | $3.07 | View |
| LT6656AIDC-3.3#TRPBF | DFN | 6 | I | $4.21 | $3.02 | View |
| LT6656AIDC-4.096#PBF | DFN | 6 | I | $4.21 | View | |
| LT6656AIDC-4.096#TRMPBF | DFN | 6 | I | $4.21 | $3.07 | View |
| LT6656AIDC-4.096#TRPBF | DFN | 6 | I | $4.21 | $3.02 | View |
| LT6656AIDC-5#PBF | DFN | 6 | I | $4.21 | View | |
| LT6656AIDC-5#TRMPBF | DFN | 6 | I | $4.21 | $3.07 | View |
| LT6656AIDC-5#TRPBF | DFN | 6 | I | $4.21 | $3.02 | View |
| LT6656AIS6-1.25#PBF | SOT | 6 | I | $3.42 | View | |
| LT6656AIS6-1.25#TRMPBF | SOT | 6 | I | $3.83 | $2.80 | View |
| LT6656AIS6-1.25#TRPBF | SOT | 6 | I | $3.83 | $2.75 | View |
| LT6656AIS6-2.048#PBF | SOT | 6 | I | $3.83 | View | |
| LT6656AIS6-2.048#TRMPBF | SOT | 6 | I | $3.83 | $2.80 | View |
| LT6656AIS6-2.048#TRPBF | SOT | 6 | I | $3.83 | $2.75 | View |
| LT6656AIS6-2.5#PBF | SOT | 6 | I | $3.83 | View | |
| LT6656AIS6-2.5#TRMPBF | SOT | 6 | I | $3.83 | $2.80 | View |
| LT6656AIS6-2.5#TRPBF | SOT | 6 | I | $3.83 | $2.75 | View |
| LT6656AIS6-3#PBF | SOT | 6 | I | $3.83 | View | |
| LT6656AIS6-3#TRMPBF | SOT | 6 | I | $3.83 | $2.80 | View |
| LT6656AIS6-3#TRPBF | SOT | 6 | I | $3.83 | $2.75 | View |
| LT6656AIS6-3.3#PBF | SOT | 6 | I | $3.83 | View | |
| LT6656AIS6-3.3#TRMPBF | SOT | 6 | I | $3.83 | $2.80 | View |
| LT6656AIS6-3.3#TRPBF | SOT | 6 | I | $3.83 | $2.75 | View |
| LT6656AIS6-4.096#PBF | SOT | 6 | I | $3.83 | View | |
| LT6656AIS6-4.096#TRMPBF | SOT | 6 | I | $3.83 | $2.80 | View |
| LT6656AIS6-4.096#TRPBF | SOT | 6 | I | $3.83 | $2.75 | View |
| LT6656AIS6-5#PBF | SOT | 6 | I | $3.83 | View | |
| LT6656AIS6-5#TRMPBF | SOT | 6 | I | $3.83 | $2.80 | View |
| LT6656AIS6-5#TRPBF | SOT | 6 | I | $3.83 | $2.75 | View |
| LT6656BCDC-1.25#PBF | DFN | 6 | C | $2.44 | View | |
| LT6656BCDC-1.25#TRMPBF | DFN | 6 | C | $2.44 | $1.79 | View |
| LT6656BCDC-1.25#TRPBF | DFN | 6 | C | $2.44 | $1.74 | View |
| LT6656BCDC-2.048#PBF | DFN | 6 | C | $2.44 | View | |
| LT6656BCDC-2.048#TRMPBF | DFN | 6 | C | $2.44 | $1.79 | View |
| LT6656BCDC-2.048#TRPBF | DFN | 6 | C | $2.44 | $1.74 | View |
| LT6656BCDC-2.5#PBF | DFN | 6 | C | $2.44 | View | |
| LT6656BCDC-2.5#TRMPBF | DFN | 6 | C | $2.44 | $1.79 | View |
| LT6656BCDC-2.5#TRPBF | DFN | 6 | C | $2.44 | $1.74 | View |
| LT6656BCDC-3#PBF | DFN | 6 | C | $2.44 | View | |
| LT6656BCDC-3#TRMPBF | DFN | 6 | C | $2.44 | $1.79 | View |
| LT6656BCDC-3#TRPBF | DFN | 6 | C | $2.44 | $1.74 | View |
| LT6656BCDC-3.3#PBF | DFN | 6 | C | $2.44 | View | |
| LT6656BCDC-3.3#TRMPBF | DFN | 6 | C | $2.44 | $1.79 | View |
| LT6656BCDC-3.3#TRPBF | DFN | 6 | C | $2.44 | $1.74 | View |
| LT6656BCDC-4.096#PBF | DFN | 6 | C | $2.44 | View | |
| LT6656BCDC-4.096#TRMPBF | DFN | 6 | C | $2.44 | $1.79 | View |
| LT6656BCDC-4.096#TRPBF | DFN | 6 | C | $2.44 | $1.74 | View |
| LT6656BCDC-5#PBF | DFN | 6 | C | $2.44 | View | |
| LT6656BCDC-5#TRMPBF | DFN | 6 | C | $2.44 | $1.79 | View |
| LT6656BCDC-5#TRPBF | DFN | 6 | C | $2.44 | $1.74 | View |
| LT6656BCS6-1.25#PBF | SOT | 6 | C | $2.44 | View | |
| LT6656BCS6-1.25#TRMPBF | SOT | 6 | C | $2.44 | $1.79 | View |
| LT6656BCS6-1.25#TRPBF | SOT | 6 | C | $2.44 | $1.74 | View |
| LT6656BCS6-2.048#PBF | SOT | 6 | C | $2.44 | View | |
| LT6656BCS6-2.048#TRMPBF | SOT | 6 | C | $2.44 | $1.79 | View |
| LT6656BCS6-2.048#TRPBF | SOT | 6 | C | $2.44 | $1.74 | View |
| LT6656BCS6-2.5#PBF | SOT | 6 | C | $2.44 | View | |
| LT6656BCS6-2.5#TRMPBF | SOT | 6 | C | $2.44 | $1.79 | View |
| LT6656BCS6-2.5#TRPBF | SOT | 6 | C | $2.44 | $1.74 | View |
| LT6656BCS6-3#PBF | SOT | 6 | C | $2.44 | View | |
| LT6656BCS6-3#TRMPBF | SOT | 6 | C | $2.44 | $1.79 | View |
| LT6656BCS6-3#TRPBF | SOT | 6 | C | $2.44 | $1.74 | View |
| LT6656BCS6-3.3#PBF | SOT | 6 | C | $2.44 | View | |
| LT6656BCS6-3.3#TRMPBF | SOT | 6 | C | $2.44 | $1.79 | View |
| LT6656BCS6-3.3#TRPBF | SOT | 6 | C | $2.44 | $1.74 | View |
| LT6656BCS6-4.096#PBF | SOT | 6 | C | $2.44 | View | |
| LT6656BCS6-4.096#TRMPBF | SOT | 6 | C | $2.44 | $1.79 | View |
| LT6656BCS6-4.096#TRPBF | SOT | 6 | C | $2.44 | $1.74 | View |
| LT6656BCS6-5#PBF | SOT | 6 | C | $2.44 | View | |
| LT6656BCS6-5#TRMPBF | SOT | 6 | C | $2.44 | $1.79 | View |
| LT6656BCS6-5#TRPBF | SOT | 6 | C | $2.44 | $1.74 | View |
| LT6656BIDC-1.25#PBF | DFN | 6 | I | $2.79 | View | |
| LT6656BIDC-1.25#TRMPBF | DFN | 6 | I | $2.79 | $2.03 | View |
| LT6656BIDC-1.25#TRPBF | DFN | 6 | I | $2.79 | $1.98 | View |
| LT6656BIDC-2.048#PBF | DFN | 6 | I | $2.79 | View | |
| LT6656BIDC-2.048#TRMPBF | DFN | 6 | I | $2.79 | $2.03 | View |
| LT6656BIDC-2.048#TRPBF | DFN | 6 | I | $2.79 | $1.98 | View |
| LT6656BIDC-2.5#PBF | DFN | 6 | I | $2.79 | View | |
| LT6656BIDC-2.5#TRMPBF | DFN | 6 | I | $2.79 | $2.03 | View |
| LT6656BIDC-2.5#TRPBF | DFN | 6 | I | $2.79 | $1.98 | View |
| LT6656BIDC-3#PBF | DFN | 6 | I | $2.79 | View | |
| LT6656BIDC-3#TRMPBF | DFN | 6 | I | $2.79 | $2.03 | View |
| LT6656BIDC-3#TRPBF | DFN | 6 | I | $2.79 | $1.98 | View |
| LT6656BIDC-3.3#PBF | DFN | 6 | I | $2.79 | View | |
| LT6656BIDC-3.3#TRMPBF | DFN | 6 | I | $2.79 | $2.03 | View |
| LT6656BIDC-3.3#TRPBF | DFN | 6 | I | $2.79 | $1.98 | View |
| LT6656BIDC-4.096#PBF | DFN | 6 | I | $2.79 | View | |
| LT6656BIDC-4.096#TRMPBF | DFN | 6 | I | $2.79 | $2.03 | View |
| LT6656BIDC-4.096#TRPBF | DFN | 6 | I | $2.79 | $1.98 | View |
| LT6656BIDC-5#PBF | DFN | 6 | I | $2.79 | View | |
| LT6656BIDC-5#TRMPBF | DFN | 6 | I | $2.79 | $2.03 | View |
| LT6656BIDC-5#TRPBF | DFN | 6 | I | $2.79 | $1.98 | View |
| LT6656BIS6-1.25#PBF | SOT | 6 | I | $2.79 | View | |
| LT6656BIS6-1.25#TRMPBF | SOT | 6 | I | $2.79 | $2.03 | View |
| LT6656BIS6-1.25#TRPBF | SOT | 6 | I | $2.79 | $1.98 | View |
| LT6656BIS6-2.048#PBF | SOT | 6 | I | $2.79 | View | |
| LT6656BIS6-2.048#TRMPBF | SOT | 6 | I | $2.79 | $2.03 | View |
| LT6656BIS6-2.048#TRPBF | SOT | 6 | I | $2.79 | $1.98 | View |
| LT6656BIS6-2.5#PBF | SOT | 6 | I | $2.79 | View | |
| LT6656BIS6-2.5#TRMPBF | SOT | 6 | I | $2.79 | $2.03 | View |
| LT6656BIS6-2.5#TRPBF | SOT | 6 | I | $2.79 | $1.98 | View |
| LT6656BIS6-3#PBF | SOT | 6 | I | $2.79 | View | |
| LT6656BIS6-3#TRMPBF | SOT | 6 | I | $2.79 | $2.03 | View |
| LT6656BIS6-3#TRPBF | SOT | 6 | I | $2.79 | $1.98 | View |
| LT6656BIS6-3.3#PBF | SOT | 6 | I | $2.79 | View | |
| LT6656BIS6-3.3#TRMPBF | SOT | 6 | I | $2.79 | $2.03 | View |
| LT6656BIS6-3.3#TRPBF | SOT | 6 | I | $2.79 | $1.98 | View |
| LT6656BIS6-4.096#PBF | SOT | 6 | I | $2.79 | View | |
| LT6656BIS6-4.096#TRMPBF | SOT | 6 | I | $2.79 | $2.03 | View |
| LT6656BIS6-4.096#TRPBF | SOT | 6 | I | $2.79 | $1.98 | View |
| LT6656BIS6-5#PBF | SOT | 6 | I | $2.79 | View | |
| LT6656BIS6-5#TRMPBF | SOT | 6 | I | $2.79 | $2.03 | View |
| LT6656BIS6-5#TRPBF | SOT | 6 | I | $2.79 | $1.98 | View |
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Demo Boards
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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
Simulate
LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. To download LTspice IV and other FREE simulation tools, please visit our Design Simulation page.
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.