LTC1063 Datasheet | Linear Technology

DC Accurate, Clock-Tunable 5th Order Butterworth Lowpass Filter Features - Clock-Tunable Cutoff Frequency - 1m V DC Offset (Typical) - 80d B CMRR (Typical) - Internal or External Clock - 50µVRMS Clock Feedthrough - 100:1 Clock-to-Cutoff Frequency Ratio - 95µVRMS Total Wideband Noise - 0.01% THD at 2VRMS Output Level - 50k Hz Maximum Cutoff Frequency - Cascadable for Faster Roll-Off - Operates from ±2.375 to ±8V Power Supplies - Self-Clocking with 1 RC - Available in 8-Pin DIP and 16-Pin SO Wide Packages U APPLICATIO S - Audio - Strain Gauge Amplifiers - Anti-Aliasing Filters - Low Level Filtering - Digital Voltmeters - 60Hz Lowpass Filters - Smoothing Filters - Reconstruction Filters , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. DESCRIPTIO The LTC®1063 is the first monolithic filter providing both clock-tunability, low DC output offset and over 12-bit DC accuracy. The frequency response of the LTC1063 closely approximates a 5th order Butterworth polynomial. With appropriate PCB layout techniques the output DC offset is typically 1m V and is constant over a wide range of clock frequencies. With ±5V supplies and ±4V input voltage range, the CMR of the device is 80d B. 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 power supply independent, and it is programmed via an external RC. The 50µVRMS clock feedthrough is considerably reduced over existing monolithic filters. The LTC1063 wideband noise is 95µVRMS, and it can process large AC input signals with low distortion. With ±7.5V supplies, for instance, the filter handles up to 4VRMS (92d B S/N ratio) while the standard 1k Hz THD is below 0.02%; 80d B dynamic ranges (S/N +THD) is obtained with input levels between 1VRMS and 2.3VRMS. The LTC1063 is available in 8-pin mini DIP and 16-pin SO wide packages. For a linear...