LTC1562CG-2#PBF

Product Summary

The LTC1562CG-2#PBF is an Active RC Quad Universal Filter. The LTC1562CG-2#PBF is a low noise, low distortion continuous time filter with rail-to-rail inputs and outputs, optimized for a center frequency (FO) of 20kHz to 300kHz. Unlike most monolithic filters, no clock is needed. Four independent 2nd order filter blocks can be cascaded in any combination, such as one 8th order or two 4th order filters. Each block’s response is programmed with three external resistors for center frequency, Q and gain, using simple design formulas. Each 2nd order block provides low pass and band pass outputs. High pass response is available if an external capacitor replaces one of the resistors. All pass, notch and elliptic responses can also be realized. The LTC1562CG-2#PBF is designed for applications where dynamic range is important. For example, by cascading 2nd order sections in pairs, the user can configure the IC as a dual 4th order Butterworth low pass filter with 90dB signal-to-noise ratio from a single 5V power supply. Low level signals can exploit the built-in gain capability of the LTC1562CG-2#PBF. Varying the gain of a section can achieve a dynamic range as high as 114dB with a ±5V supply. The applications of the LTC1562CG-2#PBF High Resolution Systems (14 Bits to 18 Bits), Ant aliasing/Reconstruction Filters, Data Communications, Equalizers, Linear Phase Filtering and Replacing LC Filter Modules.

Parametrics

LTC1562CG-2#PBF absolute maximum ratings: (1)Total Supply Voltage (V+ to V–): 11V; (2)Maximum Input Voltage at Any Pin: (V–– 0.3V) ≤ V ≤ (V + + 0.3V); (3)Storage Temperature Range: –65℃ to 150℃; (4)Operating Temperature Range: 0℃ to 70℃; (5)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LTC1562CG-2#PBF features: (1)Continuous Time—No Clock; (2)Four 2nd Order Filter Sections, 20kHz to 300kHz Center Frequency; (3)Butterworth, Chebyshev, Elliptic or Equiripple Delay Response; (4)Lowpass, Bandpass, Highpass Responses; (5)99dB Typical S/N, ±5V Supply (Q = 1); (6)93dB Typical S/N, Single 5V Supply (Q = 1); (7)Rail-to-Rail Input and Output Voltages; (8)DC Accurate to 3mV (Typ); (9)±0.5% Typical Center Frequency Accuracy; (10)“Zero-Power” Shutdown Mode; (11)Single or Dual Supply, 5V to 10V Total; (12)Resistor-Programmable fO, Q, Gain.

Diagrams