LTC1562CG#PBF

LTC1562 is a low noise, low distortion continuous-time filter with rail-to-rail inputs and outputs, optimized for a centre frequency (fO) of 10KHz to 150KHz. 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 centre frequency, Q and gain, using simple design formulas. Each 2nd order block provides lowpass and bandpass outputs. Highpass response is available if an external capacitor replaces one of the resistors. All pass, notch and elliptic responses can also be realized. It is widely used in application such as high resolution systems (14bits to 18bits), antialiasing/reconstruction filters, data communications, equalizers, dual or I-and-Q channels (two matched 4th order filters in one package), linear phase filtering, replacing LC filter modules etc.

• Centre frequency error is 0.5% typical
• Wide variety of response shapes
• Lowpass, bandpass and highpass responses
• Rail-to-rail input and output voltages
• Zero-power” shutdown mode
• Total harmonic distortion is -96dB typical
• Supply current is 17.3mA typical at (VS = ±2.375V, RL = 5K, CL = 30pF, outputs at 0V)
• Shutdown supply current is 1.5µA typical
• Operating temperature is 0°C to 70°C
• Package style is 20-lead plastic SSOP

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