LTC1065
DC Accurate, Clock-Tunable Linear Phase 5th Order Bessel Lowpass Filter
Top
Overview
Features and Benefits
- Clock-Tunable Cutoff Frequency
- 1mV DC Offset (Typical)
- 80dB CMR (Typical)
- Internal or External Clock
- 50µVRMS Clock Feedthrough
- 100:1 Clock-to-Cutoff Frequency Ratio
- 80µVRMS Total Wideband Noise
- 0.004% Noise THD at 2VRMS Output Level
- 50kHz Maximum Cutoff Frequency
- Cascadable for Faster Roll-Off
- Operates from ±2.375 to µ8V Power Supplies
- Self-Clocking with 1 RC
Product Details
The LTC1065 is the first monolithic filter providing both clock-tunability with low DC output offset and over 12-bit DC accuracy. The frequency response of the LTC1065 closely approximates a 5th order Bessel polynomial. With appropriate PCB layout techniques the output DC offset is typically 1mV and is constant over a wide range of clock frequencies. With ±5V supplies and ±4V input voltage range, the CMR of the device is typically 80dB.
The filter cutoff frequency is controlled either by an internal or external clock. The clock-to-cutoff frequency ratio is 100:1. The on-board clock is nearly power supply independent and it is programmed via an external RC. The 50µVRMS clock feedthrough of the device is considerably lower than other existing monolithic filters.
The LTC1065 wideband noise is 80µVRMS and it can process large AC input signals with low distortion. With ±7.5V supplies, for instance, the filter handles up to 4VRMS (94dB S/N ratio) while the standard 1kHz THD is below 0.005%; 87dB dynamic range (S/N THD) is obtained with input levels between 2VRMS and 2.5VRMS.
The LTC1065 is available in 8-pin miniDIP and 16-pin SOL. For a Butterworth response, see LTC1063 data sheet. The LTC1065 is pin compatible with the LTC1063.
Applications
- Strain Gauge Amplifiers
- Anti-Aliasing Filters
- Low Level Filtering
- Digital Voltmeters
- Smoothing Filters
- Reconstruction Filters
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.
Documentation & Resources
Product Recommendations
LTC1065 Companion Parts
Recommended Suggested Oscillator
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 |
|---|---|---|---|---|
| LTC1065CN8#PBF | Material Declaration | Reliability Data | 8-Lead PDIP (Narrow 0.3 Inch) | |
| LTC1065CSW#PBF | Material Declaration | Reliability Data | 16-Lead SOIC (Wide 0.3 Inch) | |
| LTC1065CSW#TRPBF | Material Declaration | Reliability Data | 16-Lead SOIC (Wide 0.3 Inch) | |
| LTC1065IN8#PBF | Material Declaration | Reliability Data | 8-Lead PDIP (Narrow 0.3 Inch) | |
| LTC1065ISW#PBF | Material Declaration | Reliability Data | 16-Lead SOIC (Wide 0.3 Inch) | |
| LTC1065ISW#TRPBF | Material Declaration | Reliability Data | 16-Lead SOIC (Wide 0.3 Inch) | |
| Wafer Fabrication Data | R042 Reliability Data |
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Support & Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
A Sample link will be shown above, next to the part, only for parts that are included in our sample program. Selecting the Sample button will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.