LTC1069-1 - Low Power, 8th Order Progressive Elliptic, Lowpass Filter
Features
- 8th Order Elliptic Filter in SO-8 Package
- Operates from Single 3.3V to ±5V Power Supplies
- –20dB at 1.2fCUTOFF
- –52dB at 1.4fCUTOFF
- –70dB at 2fCUTOFF
- Wide Dynamic Range
- 110μVRMS Wideband Noise
- 3.8mA Supply Current with ±5V Supplies
- 2.5mA Supply Current with Single 5V Supply
- 2mA Supply Current with Single 3.3V Supply
Typical Application
Description
The LTC®1069-1 is a monolithic 8th order lowpass filter featuring clock-tunable cutoff frequency and 2.5mA power supply current with a single 5V supply. An additional feature of the LTC1069-1 is operation with a single 3.3V supply.The cutoff frequency (fCUTOFF) of the LTC1069-1 is equal to the clock frequency divided by 100. The gain at fCUTOFFM is –0.7dB and the typical passband ripple is ±0.15dB up to 0.9fCUTOFF. The stopband attenuation of the LTC1069-1 features a progressive elliptic response reaching 20dB attenuation at 1.2fCUTOFF, 52dB attenuation at 1.4fCUTOFF and 70dB attenuation at 2fCUTOFF.
With ±5V supplies, the LTC1069-1 cutoff frequency can be clock-tuned up to 12kHz; with a single 5V supply, the maximum cutoff frequency is 8kHz.
The low power feature of the LTC1069-1 does not penalize the device’s dynamic range. With ±5V supplies and an input range of 0.3VRMS to 2.5VRMS, the signal-to-(noise + THD) ratio is ≥70dB. The wideband noise of the LTC1069-1 is 110μVRMS. Other filter responses with lower power or higher speed can be obtained. Please contact LTC marketing for details.
The LTC1069-1 is available in 8-pin PDIP and 8-pin SO packages.
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 |
|---|---|---|---|---|---|
| LTC1069-1CN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LTC1069-1CS8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1069-1CS8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1069-1IN8#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |
| LTC1069-1IS8#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LTC1069-1IS8#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | 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 | |
|---|---|---|---|---|---|---|
| LTC1069-1CN8#PBF | N-8 | C | $5.20 | $4.70 | Yes | |
| LTC1069-1CS8#PBF | SO-8 | C | $5.35 | $4.80 | Yes | |
| LTC1069-1CS8#TRPBF | SO-8 | C | $4.86 | Yes | ||
| LTC1069-1IN8#PBF | N-8 | I | $5.70 | $5.15 | Yes | |
| LTC1069-1IS8#PBF | SO-8 | I | $5.85 | $5.25 | Yes | |
| LTC1069-1IS8#TRPBF | SO-8 | I | $5.31 | 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.Click here to view our complete list of demo boards
Applications
- Telecommunication Filters
- Antialiasing Filters
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