The LTC1562 is a low noise, low distortion continuous-time filter with rail-to-rail inputs and outputs, optimized for a center 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 center 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. Allpass, notch and elliptic responses can also be realized.

The LTC1562 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 lowpass filter with 94dB signal-to-noise ratio from a single 5V power supply. Low level signals can exploit the built-in gain capability of the LTC1562. Varying the gain of a section can achieve a dynamic range as high as 118dB with a ±5V supply.

Other cutoff frequency ranges can be provided upon request. Please contact LTC Marketing.

Part Number | Package | Temp | Price(1-99) | Price (1k)* |
---|---|---|---|---|

LTC1562ACG#PBF | SSOP-20 | C | $13.90 | $11.75 |

LTC1562ACG#TRPBF | SSOP-20 | C | $11.85 | |

LTC1562AIG#PBF | SSOP-20 | I | $15.30 | $12.95 |

LTC1562AIG#TRPBF | SSOP-20 | I | $13.05 | |

LTC1562CG#PBF | SSOP-20 | C | $10.20 | $8.95 |

LTC1562CG#TRPBF | SSOP-20 | C | $9.05 | |

LTC1562CN#PBF | N-16 | C | $10.35 | $8.95 |

LTC1562IG#PBF | SSOP-20 | I | $11.75 | $10.30 |

LTC1562IG#TRPBF | SSOP-20 | I | $10.40 |

Part Number | Description | Price |
---|---|---|

DC266B-B | LTC1562CG-2 | Very-Low-Noise, Low Distortion Quad Universal Filter | $150.00 |

- AN83 - Performance Verification of Low Noise, Low Dropout Regulators
- DN195 - Get 100dB Stopband Attenuation with the LTC1562 Universal Filter Family
- R401 Reliability Data
- Feb 1998 Universal Continuous-Time Filter Challenges Discrete Designs
- Feb 1999 How to Design High Order Filters with Stopband Notches Using the LTC1562 Operational Filter (Part 2)
- Feb 1999 New Universal Continuous-Time Filter with Extended Frequency Range
- May 1998 How to Design High Order Filters with Stopband Notches Using the LTC1562 Quad Operational Filter (Part 1)
- Nov 1999 Sharp Gain Roll-Offs Using the LTC1562 Quad Operational Filter IC (Part 3)
- Sep 2000 Performance Verification of Low Noise, Low Dropout Regulators
- LTC1562 Footprints and Symbols

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