Overview
Features and Benefits
- 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
Product Details
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. All pass, 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.
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
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
-
R401 Reliability Data3/26/2018
-
DC266B - Demo Manual11/18/2016
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
LTC1562
LTC1562-2
LTC1562A
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC1562CG-2#PBF | Material Declaration | Reliability Data | 20-Lead SSOP | |
| LTC1562CG-2#TRPBF | Material Declaration | Reliability Data | 20-Lead SSOP | |
| LTC1562IG-2#PBF | Material Declaration | Reliability Data | 20-Lead SSOP | |
| LTC1562IG-2#TRPBF | Material Declaration | Reliability Data | 20-Lead SSOP | |
| Wafer Fabrication Data | R401 Reliability Data |
PCN-PDN Information
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Support & Discussions
LTC1562-2 Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
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Lead Times
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Sampling
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Evaluation Boards
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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.