LTC6957 - Low Phase Noise, Dual Output Buffer/Driver/Logic Converter
- Low Phase Noise Buffer/Driver
- Optimized Conversion of Sine Wave Signals to Logic Levels
- Three Logic Output Types Available
- Additive Jitter 45fsRMS (LTC6957-1)
- Frequency Range Up to 300MHz
- 3.15V to 3.45V Supply Operation
- Low Skew 3ps Typical
- Fully Specified from –40°C to 125°C
- 12-Lead MSOP and 3mm × 3mm DFN Packages
The LTC®6957-1/LTC6957-2/LTC6957-3/LTC6957-4 is a family of very low phase noise, dual output AC signal buffer/driver/logic level translators. The input signal can be a sine wave or any logic level (≤2VP-P). There are four members of the family that differ in their output logic signal type as follows:
LTC6957-1: LVPECL Logic Outputs
LTC6957-2: LVDS Logic Outputs
LTC6957-3: CMOS Logic, In-Phase Outputs
LTC6957-4: CMOS Logic, Complementary Outputs
The LTC6957 will buffer and distribute any logic signal with minimal additive noise, however, the part really excels at translating sine wave signals to logic levels. The early amplifier stages have selectable lowpass filtering to minimize the noise while still amplifying the signal to increase its slew rate. This input stage filtering/noise limiting is especially helpful in delivering the lowest possible phase noise signal with slow slewing input signals such as a typical 10MHz sine wave system reference.
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
- 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 Pricingsales office or authorized distributor.
Demo BoardsLinear 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.
|DC1765A-A||LTC6957HMS-1 Demo Board | Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with LVPECL Outputs||$75.00|
|DC1765A-B||LTC6957HMS-2 Demo Board | Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with LVDS Outputs||$75.00|
|DC1766A-A||LTC6957HMS-3 Demoboard:Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with In-Phase CMOS Outputs||$75.00|
|DC1766A-B||LTC6957HMS-4 Demoboard:Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with Complementary CMOS Outputs||$75.00|
- System Reference Frequency Distribution
- High Speed ADC, DAC, DDS Clock Driver
- Military and Secure Radio
- Low Noise Timing Trigger
- Broadband Wireless Transceiver
- High Speed Data Acquisition
- Medical Imaging
- Test and Measurement
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