LTC1063CSW

有源滤波器 LTC1063 - DC Accurate, Clock-Tunable 5th Order Butterworth Lowpass Filter

DESCRIPTION

The LTC1063 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 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 80dB.

FEATURES

■ Clock-Tunable Cutoff Frequency

■ 1mV DC Offset Typical

■ 80dB 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

■ 50kHz Maximum Cutoff Frequency

■ Cascadable for Faster Roll-Off

■ Operates from ±2.375 to ±8V Power Supplies

■ Self-Clocking with 1 RC

APPLICATIONS

■ Audio

■ Strain Gauge Amplifiers

■ Anti-Aliasing Filters

■ Low Level Filtering

■ Digital Voltmeters

■ 60Hz Lowpass Filters

■ Smoothing Filters

■ Reconstruction Filters