LTC1562IG-2#PBF

LTC1562-2 is a low noise, low distortion continuous time filter. 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 low pass and bandpass 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. It is used in application like 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.

• Continuous time-no clock
• Butterworth, chebyshev, elliptic or equiripple delay response
• Low pass, bandpass, high pass responses
• Rail-to-rail Input and output voltages
• DC accurate to 3mV typical, shutdown supply current is 15µA maximum
• ±0.5% typical centre frequency accuracy
• “Zero-Power” shutdown mode, resistor-programmable fO, Q, gain
• Total supply voltage is 4.75V to 10.5V, supply current is 21mA typical
• Wideband output noise is 39µVRMS typical at (VS = ±2.375V)
• Operating temperature is -40°C to 85°C, package style is 20-lead plastic SSOP

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