LT6657 - 1.5ppm/°C Drift, Low Noise, Buffered Reference
Features
- 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
AEC-Q100 data available for specific packages
Typical Application
Description
The LT®6657 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.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LT6657AHMS8-1.25#PBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657AHMS8-1.25#TRPBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657AHMS8-2.5#PBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657AHMS8-2.5#TRPBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657AHMS8-3#PBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657AHMS8-3#TRPBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657AHMS8-4.096#PBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657AHMS8-4.096#TRPBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657AHMS8-5#PBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657AHMS8-5#TRPBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657BHMS8-1.25#PBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657BHMS8-1.25#TRPBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657BHMS8-2.5#PBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657BHMS8-2.5#TRPBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657BHMS8-3#PBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657BHMS8-3#TRPBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657BHMS8-4.096#PBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657BHMS8-4.096#TRPBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657BHMS8-5#PBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
| LT6657BHMS8-5#TRPBF | MS-8 | MS8 | H | 05-08-1660 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- 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 | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT6657AHMS8-1.25#PBF | MS-8 | H | $7.66 | $5.49 | Yes | |
| LT6657AHMS8-1.25#TRPBF | MS-8 | H | $7.72 | $5.55 | Yes | |
| LT6657AHMS8-2.5#PBF | MS-8 | H | $7.66 | $5.49 | Yes | |
| LT6657AHMS8-2.5#TRPBF | MS-8 | H | $7.72 | $5.55 | Yes | |
| LT6657AHMS8-3#PBF | MS-8 | H | $7.66 | $5.49 | Yes | |
| LT6657AHMS8-3#TRPBF | MS-8 | H | $7.72 | $5.55 | Yes | |
| LT6657AHMS8-4.096#PBF | MS-8 | H | $7.66 | $5.49 | Yes | |
| LT6657AHMS8-4.096#TRPBF | MS-8 | H | $7.72 | $5.55 | Yes | |
| LT6657AHMS8-5#PBF | MS-8 | H | $7.66 | $5.49 | Yes | |
| LT6657AHMS8-5#TRPBF | MS-8 | H | $7.72 | $5.55 | Yes | |
| LT6657BHMS8-1.25#PBF | MS-8 | H | $4.44 | $3.19 | Yes | |
| LT6657BHMS8-1.25#TRPBF | MS-8 | H | $4.50 | $3.25 | Yes | |
| LT6657BHMS8-2.5#PBF | MS-8 | H | $4.44 | $3.19 | Yes | |
| LT6657BHMS8-2.5#TRPBF | MS-8 | H | $4.50 | $3.25 | Yes | |
| LT6657BHMS8-3#PBF | MS-8 | H | $4.44 | $3.19 | Yes | |
| LT6657BHMS8-3#TRPBF | MS-8 | H | $4.50 | $3.25 | Yes | |
| LT6657BHMS8-4.096#PBF | MS-8 | H | $4.44 | $3.19 | Yes | |
| LT6657BHMS8-4.096#TRPBF | MS-8 | H | $4.50 | $3.25 | Yes | |
| LT6657BHMS8-5#PBF | MS-8 | H | $4.44 | $3.19 | Yes | |
| LT6657BHMS8-5#TRPBF | MS-8 | H | $4.50 | $3.25 | Yes | |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.Click here to view our complete list of demo boards
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT6657AHMS8-1.25#PBF | MS-8 | H | $7.66 | $5.49 | Yes | |
| LT6657AHMS8-1.25#TRPBF | MS-8 | H | $7.72 | $5.55 | Yes | |
| LT6657AHMS8-2.5#PBF | MS-8 | H | $7.66 | $5.49 | Yes | |
| LT6657AHMS8-2.5#TRPBF | MS-8 | H | $7.72 | $5.55 | Yes | |
| LT6657AHMS8-3#PBF | MS-8 | H | $7.66 | $5.49 | Yes | |
| LT6657AHMS8-3#TRPBF | MS-8 | H | $7.72 | $5.55 | Yes | |
| LT6657AHMS8-5#PBF | MS-8 | H | $7.66 | $5.49 | Yes | |
| LT6657AHMS8-5#TRPBF | MS-8 | H | $7.72 | $5.55 | Yes | |
| LT6657BHMS8-1.25#PBF | MS-8 | H | $4.44 | $3.19 | Yes | |
| LT6657BHMS8-1.25#TRPBF | MS-8 | H | $4.50 | $3.25 | Yes | |
| LT6657BHMS8-2.5#PBF | MS-8 | H | $4.44 | $3.19 | Yes | |
| LT6657BHMS8-2.5#TRPBF | MS-8 | H | $4.50 | $3.25 | Yes | |
| LT6657BHMS8-3#PBF | MS-8 | H | $4.44 | $3.19 | Yes | |
| LT6657BHMS8-3#TRPBF | MS-8 | H | $4.50 | $3.25 | Yes | |
| LT6657BHMS8-5#PBF | MS-8 | H | $4.44 | $3.19 | Yes | |
| LT6657BHMS8-5#TRPBF | MS-8 | H | $4.50 | $3.25 | Yes | |
| Buy Now • Request Samples | ||||||
Applications
- High Temperature Industrial
- High Resolution Data Acquisition Systems
- Instrumentation and Process Control
- Automotive Control and Monitoring
- Medical Equipment
- Shunt and Negative Voltage References
People Who Viewed This Product Also Viewed
- LTC6655 - 0.25ppm Noise, Low Drift Precision References
- LT3042 - 20V, 200mA, Ultralow Noise, Ultrahigh PSRR RF Linear Regulator
- LT5400 - Quad Matched Resistor Network
- LTC2057/LTC2057HV - High Voltage, Low Noise Zero-Drift Operational Amplifier
- LTC2380-24 - 24-Bit, 1.5Msps/2Msps, Low Power SAR ADC with Integrated Digital Filter
- LTZ1000 - Ultra Precision Reference
- LT1028 - Ultra Low Noise Precision High Speed Op Amps
- LT6654 - Precision Wide Supply High Output Drive Low Noise Reference
- LT3080 - Adjustable 1.1A Single Resistor Low Dropout Regulator
- LT3081 - 1.5A Single Resistor Rugged Linear Regulator with Monitors
Product Notifications
Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.
Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.
Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LT6657-2.5
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.