LTC1562-2 - Very Low Noise, Low Distortion Active RC Quad Universal Filter
Features
- Continuous Time—No Clock
- Four 2nd Order Filter Sections, 20kHz to 300kHz
Center Frequency - Butterworth, Chebyshev, Elliptic or Equiripple
Delay Response - Lowpass, Bandpass, Highpass Responses
- 99dB Typical S/N, ±5V Supply (Q = 1)
- 93dB Typical S/N, Single 5V Supply (Q = 1)
- Rail-to-Rail Input and Output Voltages
- DC Accurate to 3mV (Typ)
- ±0.5% Typical Center Frequency Accuracy
- “Zero-Power” Shutdown Mode
- Single or Dual Supply, 5V to 10V Total
- Resistor-Programmable fO, Q, Gain
Typical Application
Description
The LTC1562-2 is a low noise, low distortion continuous time filter with rail-to-rail inputs and outputs, optimized for a center frequency (fO) of 20kHz to 300kHz. Unlike most monolithic filters, no clock is needed. Four independent 2nd order filter blocks can be cascaded in any combination, such as one 8th order or two 4th order filters. Each block’s response is programmed with three external resistors for center frequency, Q and gain, using simple design formulas. Each 2nd order block provides lowpass and bandpass outputs. Highpass response is available if an external capacitor replaces one of the resistors. Allpass, notch and elliptic responses can also be realized. The LTC1562-2 is designed for applications where dynamic range is important. For example, by cascading 2nd order sections in pairs, the user can configure the IC as a dual 4th order Butterworth lowpass filter with 90dB signal-to-noise ratio from a single 5V power supply. Low level signals can exploit the built-in gain capability of the LTC1562-2. Varying the gain of a section can achieve a dynamic range as high as 114dB with a ±5V supply. Other cutoff frequency ranges can be provided upon request. 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 |
|---|---|---|---|---|---|
| LTC1562CG-2#PBF | SSOP-20 | G | C | 05-08-1640 (G20) | Yes |
| LTC1562CG-2#TRPBF | SSOP-20 | G | C | 05-08-1640 (G20) | Yes |
| LTC1562IG-2#PBF | SSOP-20 | G | I | 05-08-1640 (G20) | Yes |
| LTC1562IG-2#TRPBF | SSOP-20 | G | I | 05-08-1640 (G20) | 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 | |
|---|---|---|---|---|---|---|
| LTC1562CG-2#PBF | SSOP-20 | C | $10.20 | $8.95 | Yes | |
| LTC1562CG-2#TRPBF | SSOP-20 | C | $9.05 | Yes | ||
| LTC1562IG-2#PBF | SSOP-20 | I | $11.75 | $10.30 | Yes | |
| LTC1562IG-2#TRPBF | SSOP-20 | I | $10.40 | 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.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC266B-B | LTC1562CG-2 | Very-Low-Noise, Low Distortion Quad Universal Filter | $150.00 | |
| Buy Now | |||
Applications
- High Resolution Systems (14 Bits to 18 Bits)
- Antialiasing/Reconstruction Filters
- Data Communications, Equalizers
- Dual or I-and-Q Channels (Two Matched 4th Order
Filters in One Package) - Linear Phase Filtering
- Replacing LC Filter Modules
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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:
LTC1562
LTC1562-2
LTC1562A
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.
