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LT6657
PRODUCTION1.5ppm/°C Drift, Low Noise, Buffered Reference
- Part Models
- 20
- 1ku List Price
- Starting From $3.83
Overview
- Low Drift
- A Grade: 1.5ppm/°C Max
- B Grade: 3ppm/°C Max
- Low Noise:
- 0.5ppmP-P (0.1Hz to 10Hz)
- 0.8ppmRMS (10Hz to 1kHz)
- Wide Supply Range to 40V
- Sources and Sinks 10mA Min
- Line Regulation: 0.2ppm/V
- Load Regulation: 2μV/mA
- Reverse Supply Protection
- Reverse Output Protection
- Low Power Shutdown: <4μA Max
- 1.5V Min Supply for 1.25V Option
- Thermal Protection
- Can Operate in Shunt Mode
- Configurable as a Negative Reference
- Available Output Voltage Options: 1.25V, 2.5V, 3V, 4.096V, 5V
- MSOP-8 Package
The LT6657 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 1.5ppm/°C drift with predictable temperature behavior, and an initial voltage accuracy of 0.1%. It also offers 0.5ppmP-P noise and very low temperature cycling hysteresis.
The LT6657 is a low dropout reference that can be powered from as little as 50mV above the output voltage, up to 40V. The buffered output supports ±10mA 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.
Applications
- High Temperature Industrial
- High Resolution Data Acquisition Systems
- Instrumentation and Process Control
- Automotive Control and Monitoring
- Medical Equipment
- Shunt and Negative Voltage References
Documentation
Data Sheet 1
Reliability Data 1
Technical Articles 1
Video 1
Solutions Bulletin & Brochure 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT6657AHMS8-1.25#PBF | 8-Lead MSOP | ||
| LT6657AHMS8-1.25#TRPBF | 8-Lead MSOP | ||
| LT6657AHMS8-2.5#PBF | 8-Lead MSOP | ||
| LT6657AHMS8-2.5#TRPBF | 8-Lead MSOP | ||
| LT6657AHMS8-3#PBF | 8-Lead MSOP | ||
| LT6657AHMS8-3#TRPBF | 8-Lead MSOP | ||
| LT6657AHMS8-4.096#PBF | 8-Lead MSOP | ||
| LT6657AHMS8-4.096#TRPBF | 8-Lead MSOP | ||
| LT6657AHMS8-5#PBF | 8-Lead MSOP | ||
| LT6657AHMS8-5#TRPBF | 8-Lead MSOP | ||
| LT6657BHMS8-1.25#PBF | 8-Lead MSOP | ||
| LT6657BHMS8-1.25#TRPBF | 8-Lead MSOP | ||
| LT6657BHMS8-2.5#PBF | 8-Lead MSOP | ||
| LT6657BHMS8-2.5#TRPBF | 8-Lead MSOP | ||
| LT6657BHMS8-3#PBF | 8-Lead MSOP | ||
| LT6657BHMS8-3#TRPBF | 8-Lead MSOP | ||
| LT6657BHMS8-4.096#PBF | 8-Lead MSOP | ||
| LT6657BHMS8-4.096#TRPBF | 8-Lead MSOP | ||
| LT6657BHMS8-5#PBF | 8-Lead MSOP | ||
| LT6657BHMS8-5#TRPBF | 8-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package |
||
| LT6657AHMS8-1.25#PBF | PRODUCTION | |
| LT6657AHMS8-1.25#TRPBF | PRODUCTION | |
| LT6657AHMS8-2.5#PBF | PRODUCTION | |
| LT6657AHMS8-2.5#TRPBF | PRODUCTION | |
| LT6657AHMS8-3#PBF | PRODUCTION | |
| LT6657AHMS8-3#TRPBF | PRODUCTION | |
| LT6657AHMS8-4.096#PBF | PRODUCTION | |
| LT6657AHMS8-4.096#TRPBF | PRODUCTION | |
| LT6657AHMS8-5#PBF | PRODUCTION | |
| LT6657AHMS8-5#TRPBF | PRODUCTION | |
| LT6657BHMS8-1.25#PBF | PRODUCTION | |
| LT6657BHMS8-1.25#TRPBF | PRODUCTION | |
| LT6657BHMS8-2.5#PBF | PRODUCTION | |
| LT6657BHMS8-2.5#TRPBF | PRODUCTION | |
| LT6657BHMS8-3#PBF | PRODUCTION | |
| LT6657BHMS8-3#TRPBF | PRODUCTION | |
| LT6657BHMS8-4.096#PBF | PRODUCTION | |
| LT6657BHMS8-4.096#TRPBF | PRODUCTION | |
| LT6657BHMS8-5#PBF | PRODUCTION | |
| LT6657BHMS8-5#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT6657AHMS8-1.25#PBF | PRODUCTION | |
| LT6657AHMS8-1.25#TRPBF | PRODUCTION | |
| LT6657AHMS8-2.5#PBF | PRODUCTION | |
| LT6657AHMS8-2.5#TRPBF | PRODUCTION | |
| LT6657AHMS8-3#PBF | PRODUCTION | |
| LT6657AHMS8-3#TRPBF | PRODUCTION | |
| LT6657AHMS8-4.096#PBF | PRODUCTION | |
| LT6657AHMS8-4.096#TRPBF | PRODUCTION | |
| LT6657AHMS8-5#PBF | PRODUCTION | |
| LT6657AHMS8-5#TRPBF | PRODUCTION | |
| LT6657BHMS8-1.25#PBF | PRODUCTION | |
| LT6657BHMS8-1.25#TRPBF | PRODUCTION | |
| LT6657BHMS8-2.5#PBF | PRODUCTION | |
| LT6657BHMS8-2.5#TRPBF | PRODUCTION | |
| LT6657BHMS8-3#PBF | PRODUCTION | |
| LT6657BHMS8-3#TRPBF | PRODUCTION | |
| LT6657BHMS8-4.096#PBF | PRODUCTION | |
| LT6657BHMS8-4.096#TRPBF | PRODUCTION | |
| LT6657BHMS8-5#PBF | PRODUCTION | |
| LT6657BHMS8-5#TRPBF | PRODUCTION | |
|
Jun 21, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices |
||
| LT6657BHMS8-2.5#PBF | PRODUCTION | |
| LT6657BHMS8-2.5#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| LDO Linear Regulators 1 | ||
| LT3040 | RECOMMENDED FOR NEW DESIGNS | 20V, 200mA, Ultralow Noise, Ultrahigh PSRR Precision DAC/Reference Buffer |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LT6657-1.25
- LT6657-2.5
- LT6657-3
- LT6657-4.096
- LT6657-5
Signal Chain Designer
Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Reference Designs
Isolated High Voltage, High Current, Measurement Module
Part Used
Design & Integration Tools
Videos
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CN0548: Isolated High Voltage, High Current, Measurement Module