Features and Benefits
- Steeper Roll-Off Than 8th Order Bessel Filters
- fCUTOFF up to 100kHz
- Phase Equalized Filter in 14-Pin Package
- Phase and Group Delay Response Fully Tested
- Transient Response Exhibits 5% Overshoot and No Ringing
- Wide Dynamic Range
- 72dB THD or Better Throughout a 50kHz Passband
- No External Components Needed
- Available in 14-Pin DIP and 16-Pin SO Wide Packages
The LTC1064-7 is a clock-tunable monolithic 8th order lowpass filter with linear passband phase and flat group delay. The amplitude response approximates a maximally flat passband while it exhibits steeper roll-off than an equivalent 8th order Bessel filter. For instance, at twice the cutoff frequency the filter attains 34dB attenuation (vs 12dB for Bessel), while at three times the cutoff frequency, the filter attains 68dB attenuation (vs 30dB for Bessel). The cutoff frequency of the LTC1064-7 is tuned via an external TTL or CMOS clock.The LTC1064-7 features wide dynamic range. With single 5V supply, the S/N + THD is 76dB. Optimum 92dB S/N is obtained with ±7.5V supplies.
The clock-to-cutoff frequency ratio of the LTC1064-7 can be set to 50:1 (pin 10 to V+) or 100:1 (pin 10 to V-).
When the filter operates at clock-to-cutoff frequency ratio of 50:1, the input is double-sampled to lower the risk of aliasing.
The LTC1064-7 is pin-compatible with the LTC1064-X series, LTC1164-7 and LTC1264-7.
- Data Communication Filters
- Time Delay Networks
- Phase-Matched Filters
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.
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.
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