LTC1565-31 - 650kHz Continuous Time, Linear Phase Lowpass Filter
Features
- 7th Order, 650kHz Linear Phase Filter in an SO-8
- Differential Inputs and Outputs
- Operates on a Single 5V or a ±5V Supply
- Low Offset: 5mV Typical
- 75dB THD and SNR
- 78dB SNR
- Shutdown Mode
- Requires No External Components
- Requires No External Clock Signal
Typical Application
Description
The LTC1565-31 is a 7th order, continuous time, linear phase lowpass filter. The selectivity of the LTC1565-31, combined with its linear phase and dynamic range, make it suitable for filtering in data communications or data acquisition systems. The filter attenuation is 36dB at 2× fCUTOFF and at least 72dB for frequencies above 3× fCUTOFF. Unlike comparable LC filters, the LTC1565-31 achieves this selectivity with a linear phase response in the passband.With 5% accuracy of the cutoff frequency, the LTC1565-31 can be used in applications requiring pairs of matched filters, such as transceiver I and Q channels. Furthermore, the differential inputs and outputs provide a simple interface for these wireless systems.
With a single 5V supply and a 2VP-P input, the LTC1565-31 features an impressive spurious free dynamic range of 75dB. The maximum signal-to-noise ratio is 78dB and it is achieved with a 2.5VP-P input signal.
The LTC1565-31 features a shutdown mode where power supply current is typically less than 10μA. For W-CDMA, 3G, CDMA 2000 and other cellular and noncellular cutoff frequencies or single-ended I/O, please contact LTC Marketing for additional information.
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 |
|---|---|---|---|---|---|
| LTC1565-31CS8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1565-31CS8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1565-31IS8#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LTC1565-31IS8#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 | |
|---|---|---|---|---|---|---|
| LTC1565-31CS8#PBF | SO-8 | C | $4.30 | $3.65 | Yes | |
| LTC1565-31CS8#TRPBF | SO-8 | C | $3.71 | Yes | ||
| LTC1565-31IS8#PBF | SO-8 | I | $4.93 | $4.25 | Yes | |
| LTC1565-31IS8#TRPBF | SO-8 | I | $4.31 | 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
- CDMA Basestations
- Data Communications
- Antialiasing Filters
- Smoothing or Reconstruction Filters
- Matched Filter Pairs
- Replacement for LC Filters
People Who Viewed This Product Also Viewed
- LTC1569-7 - Linear Phase, DC Accurate, Tunable 10th Order Lowpass Filter
- LTC1563 - Active RC, 4th Order Lowpass Filter Family
- LTC1566-1 - Low Noise 2.3MHz Continuous Time Lowpass Filter
- LTC1560-1 - 1MHz/500kHz Continuous Time Low Noise, Lowpass Elliptic Filter
- LT1568 - Very Low Noise, High Frequency Active RC, Filter Building Block
- LTC1564 - 10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A
- LTC1562-2 - Very Low Noise, Low Distortion Active RC Quad Universal Filter
- LT1028 - Ultra Low Noise Precision High Speed Op Amps
- LTC1569-6 - Linear Phase, DC Accurate, Low Power, 10th Order Lowpass Filter
- LT3080 - Adjustable 1.1A Single Resistor Low Dropout Regulator
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:
LTC1565
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.
