Features and Benefits
- Rail-to-Rail Input and Output Operation
- Operates from a Single 3V to ±5V Supply
- Dual 2nd Order Filter in a 16-Lead SSOP Package
- >80dB Dynamic Range on Single 3.3V Supply
- Clock-to-Center Frequency Ratio of 100:1 for the LTC1067 and 50:1 for the LTC1067-50
- Internal Sampling-to-Center Frequency Ratio of 200:1 for the LTC1067 and 100:1 for the LTC1067-50
- Center Frequency Error < ±0.2% Typ
- Low Noise: <40µVRMS, Q ≤ 5
- Customizable with Internal Resistors
The LTC1067/LTC1067-50 consist of two identical rail-to-rail, high accuracy and very wide dynamic range 2nd order switched-capacitor building blocks. Each building block, together with three to five resistors, provides 2nd order filter functions such as bandpass, highpass, lowpass, notch and allpass. High precision 4th order filters are easily designed.
The center frequency of each 2nd order section is tuned by the external clock frequency. The internal clock-to-center frequency ratio (100:1 for the LTC1067 and 50:1 for the LTC1067-50) can be modified by the external resistors. These devices have a double sampled architecture which places aliasing and imaging components at twice the clock frequency. The LTC1067-50 is a low power device consuming about one half the current of the LTC1067. The LTC1067-50’s typical supply current is about 1mA from a 3.3V supply.
The LTC1067 and LTC1067-50 are available in 16-pin narrow SSOP and SO packages.
Mask programmable versions of the LTC1067 and LTC1067-50, with thin film resistors on-chip and custom clock-to-cutoff frequency ratios, can be designed in an SO-8 package to realize application specific monolithic filters. Please contact LTC Marketing for more details.
- Notch Filters
- Narrowband Bandpass Filters
- Tone Detection
- Noise Reduction Systems
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.
Tools & Simulations
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:
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.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.