LTC1066-1 - 14-Bit DC Accurate Clock-Tunable, 8th Order Elliptic or Linear Phase Lowpass Filter
Features
- DC Gain Linearity: 14 Bits
- Maximum DC Offset: ±1.5mV
- DC Offset TempCo: 7µV/°C
- Device Fully Tested at fCUTOFF = 80kHz
- Maximum Cutoff Frequency: 120kHz (VS = ±8V)
- Drives 1k ohms Load with 0.02% THD or Better
- Signal-to-Noise Ratio: 90dB
- Input Impedance: 500Mohms
- Selectable Elliptic or Linear Phase Response
- Operates from Single 5V up to ±8V Power Supplies
- Available in an 18-Pin SO Wide Package
Typical Application
Description
The LTC1066-1 is an 8th order elliptic lowpass filter which simultaneously provides clock-tunability and DC accuracy. The unique and proprietary architecture of the filter allows 14 bits of DC gain linearity and a maximum of 1.5mV DC offset. An external RC is required for DC accurate operation. With ±7.5V supplies, a 20k resistor and a 1µF capacitor, the cutoff frequency can be tuned from 800Hz to 100kHz. A clock-tunable 10Hz to 100kHz operation can also be achieved (see Typical Application section).
The filter does not require any external active components such as input/output buffers. The input/output impedance is 500Mohms/0.1ohms and the output of the filter can source or sink 40mA. When pin 8 is connected to V + , the clock-to-cutoff frequency ratio is 50:1 and the input signal is sampled twice per clock cycle to lower the risk of aliasing. For frequencies up to 0.75fCUTOFF , the passband ripple is µ0.15dB. The gain at fCUTOFF is -1dB and the filter’s stopband attenuation is 80dB at 2.3fCUTOFF . Linear phase operation is also available with a clock-to-cutoff frequency ratio of 100:1 when pin 8 is connected to ground.
The LTC1066-1 is available in an 18-pin SO Wide package..
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 |
|---|---|---|---|---|---|
| LTC1066-1CSW#PBF | SW-18 | SW | C | 05-08-1620 (SW18) | Yes |
| LTC1066-1CSW#TRPBF | SW-18 | SW | C | 05-08-1620 (SW18) | 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 | |
|---|---|---|---|---|---|---|
| LTC1066-1CSW#PBF | SW-18 | C | $21.65 | $17.10 | Yes | |
| LTC1066-1CSW#TRPBF | SW-18 | C | $17.20 | 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 |
|---|---|---|---|
| DC048A | LTC1066-1CSW | 8th Order, DC Accurate, Elliptic or Linear Phase Lowpass Demo Board | $75.00 | |
| Buy Now | |||
Applications
- Instrumentation
- Data Acquisition Systems
- Anti-Aliasing Filters
- Smoothing Filters
- Audio Signal Processing
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Design Tools
Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:
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- And More!
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.
