LTC1064-4 - Low Noise, 8th Order, Clock Sweepable Cauer Lowpass Filter
Features
- 8th Order Filter in a 14-Pin Package
- 80dB or More Stopband Attenuation
at 2 x fCUTOFF - 50:1 fCLK to fCUTOFF Ratio (Cauer)
- 100:1 fCLK to f-3dB Ratio (Transitional)
- 135µVRMS Total Wideband Noise
- 0.03% THD or Better
- 100kHz Maximum fCUTOFF Frequency
- Operates up to ±8V Power Supplies
- Input Frequency Range up to 50 Times the Filter Cutoff Frequency
Typical Application
Description
The LTC1064-4 is an 8th order, clock sweepable Cauer lowpass switched capacitor filter. An external TTL or CMOS clock programs the value of the filters cutoff frequency. With Pin 10 at V+, the fCLK to fCUTOFF ratio is 50:1; the filter has a Cauer response and with compensation the passband ripple is ±0.1dB. The stopband attenuation is 80dB at 2×fCUTOFF. Cutoff frequencies up to 100kHz can be achieved. With Pin 10 at V?, the fCLK to f?3dB ratio is 100:1, the filter has a transitional Butterworth-Cauer response with lower noise and lower delay nonlinearity than the Cauer response. The stopband attenuation at 2.5×f?3dB is 92dB. Cutoff frequencies up to 50kHz can be achieved.
The LTC1064-4 features low noise and low harmonic distortion even when input voltages up to 3VRMS are applied. The LTC1064-4 overall performance competes with equivalent multiple op amp active realizations. The LTC1064-4 is pin compatible with the LTC1064-1, LTC1064-2 and LTC1064-3.
The LTC1064-4 is manufactured using Linear Technology?s enhanced LTCMOS? silicon gate process.
Packaging
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 Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC1064-4CN#PBF | N-14 | N | C | 05-08-1510 (N14) | Yes |
| LTC1064-4CSW#PBF | SW-16 | SW | C | 05-08-1620 (SW16) | Yes |
| LTC1064-4CSW#TRPBF | SW-16 | SW | C | 05-08-1620 (SW16) | Yes |
| LTC1064-4MJ | CERDIP-14 | J | M | 05-08-1110 (J14) | No |
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 | |
|---|---|---|---|---|---|---|
| LTC1064-4CN#PBF | N-14 | C | $16.70 | $13.70 | Yes | |
| LTC1064-4CSW#PBF | SW-16 | C | $20.85 | $16.90 | Yes | |
| LTC1064-4CSW#TRPBF | SW-16 | C | $16.96 | Yes | ||
| LTC1064-4MJ | CERDIP-14 | M | $78.60 | No | ||
| 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
Applications
- Antialiasing Filters
- Telecom Filters
- Sinewave Generators
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Design Tools
Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:
- LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
- LTpowerCAD - A complete power supply selection, synthesis and design tool
- LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
- PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
- Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
- LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
- And More!
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.
