LTC1562CG-2#PBF

Overview

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. It contains four independent 2nd order filter blocks that can be cascaded in any combination. Each block's response is programmed with three external resistors for center frequency, Q and gain. The device operates on a single or dual supply from 4.75V to 10.5V total. It features a 'zero-power' shutdown mode and requires no clock.

Feature Summary

• Continuous time architecture requiring no clock
• Four independent 2nd order filter sections
• Rail-to-rail input and output voltages
• Resistor-programmable fO, Q, and Gain

Applications

• Antialiasing/Reconstruction Filters
• Data Communications, Equalizers
• Dual or I-and-Q Channels
• Linear Phase Filtering
• Replacing LC Filter Modules

Procurement Notes

Verify the exact part number against official Analog Devices documentation before procurement. Confirm package type and temperature range specifications match your design requirements. Check for any specific ordering suffixes that may affect availability or performance characteristics.

Selection Notes

Select this component when high dynamic range and low distortion are critical. Ensure the required center frequency falls within the 20kHz to 300kHz optimized range. Consider the power supply constraints and the need for external programming resistors to set filter parameters.

Part Context

The LTC1562CG-2#PBF belongs to the LTC1562-2 family, which is a higher frequency variant of the original LTC1562. It shares the same pinout and block diagram but is optimized for center frequencies between 20kHz and 300kHz. This makes it suitable for applications requiring higher bandwidth than the standard LTC1562.

Replacement Considerations

LTC1562CG#PBF

FAQ

What is the typical signal-to-noise ratio (SNR) for the LTC1562-2?

The typical SNR is 99dB with a -5V supply (Q=1) and 93dB with a single 5V supply (Q=1).

How is the center frequency (fO) programmed?

The center frequency is programmed using external resistors R2 and RQ. The internal precision components R1 and C are fixed.

Does the LTC1562-2 require an external clock?

No, the LTC1562-2 is a continuous time filter and does not require a clock.