LTC1069-7 - Linear Phase 8th Order Lowpass Filter
Features
- 8th Order, Linear Phase Filter in SO-8 Package
- Raised Cosine Amplitude Response
- -43dB Attenuation at 2x fCUTOFF
- Wideband Noise: 140µVRMS
- Operates from Single 5V Supply to ±5V Power Supplies
- Clock-Tunable to 200kHz with ±5V Supplies
- Clock-Tunable to 120kHz with Single 5V Supply
Typical Application
Description
The LTC®1069-7 is a monolithic, clock-tunable, linear phase, 8th order lowpass filter. The amplitude response of the filter approximates a raised cosine filter with an alpha of one. The gain at the cutoff frequency is –3dB and the attenuation at twice the cutoff frequency is 43dB. The cutoff frequency of the LTC1069-7 is set by an external clock and is equal to the clock frequency divided by 25. The ratio of the internal sampling frequency to the cutoff frequency is 50:1 that is, the input signal is sampled twice per clock cycle to lower the risk of aliasing. The LTC1069-7 can be operated from a single 5V supply up to dual ±5V supplies.The gain and phase response of the LTC1069-7 can be used in digital communication systems where pulse shaping and channel bandwidth limiting must be carried out. Any system that requires an analog filter with linear phase and sharper roll off than conventional Bessel filters can use the LTC1069-7.
The LTC1069-7 has a wide dynamic range. With ±5V supplies and an input range of 0.1VRMS to 2VRMS, the signal-to-(noise + THD) ratio is ≥ 60dB. The wideband noise of the LTC1069-7 is 140μVRMS. Unlike other LTC1069-X filters,> the typical passband gain of the LTC1069-7 is equal to –1V/V.
The LTC1069-7 is available in an SO-8 package.
Other filter responses with lower power/speed specifications can be obtained. Please contact LTC Marketing.
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 |
|---|---|---|---|---|---|
| LTC1069-7CS8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1069-7CS8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1069-7IS8#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LTC1069-7IS8#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | 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 | |
|---|---|---|---|---|---|---|
| LTC1069-7CS8#PBF | SO-8 | C | $5.75 | $4.80 | Yes | |
| LTC1069-7CS8#TRPBF | SO-8 | C | $4.86 | Yes | ||
| LTC1069-7IS8#PBF | SO-8 | I | $6.30 | $5.20 | Yes | |
| LTC1069-7IS8#TRPBF | SO-8 | I | $5.26 | 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
Applications
- Digital Communication Filter
- Antialiasing Filter with Linear Phase
- Smoothing Filters
People Who Viewed This Product Also Viewed
- LTC1569-7 - Linear Phase, DC Accurate, Tunable 10th Order Lowpass Filter
- LTC1569-6 - Linear Phase, DC Accurate, Low Power, 10th Order Lowpass Filter
- LTC1563 - Active RC, 4th Order Lowpass Filter Family
- LTC1566-1 - Low Noise 2.3MHz Continuous Time Lowpass Filter
- LTC1565-31 - 650kHz Continuous Time, Linear Phase Lowpass Filter
- LTC1264-7 - Linear Phase, Group Delay Equalized, 8th Order Lowpass Filter
- LTC1069-1 - Low Power, 8th Order Progressive Elliptic, Lowpass Filter
- LTC1564 - 10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A
- LT1028 - Ultra Low Noise Precision High Speed Op Amps
- LTC1560-1 - 1MHz/500kHz Continuous Time Low Noise, Lowpass Elliptic Filter
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
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.
