LT1568IGN#PBF

LT1568 is a easy-to-use, active-RC filter building block with rail-to-rail inputs and outputs. The internal capacitors of the IC and the GBW product of the internal low noise op-amps are trimmed such that consistent and repeatable filter responses can be achieved. With a single resistor value, this device provides a pair of matched 2-pole butterworth low pass filters with unity gain suitable for I/Q channels. By using unequal-valued external resistors, the two 2-pole sections can create different frequency responses or gains. In addition, the two stages may be cascaded to create a single 4-pole filter with a programmable response. It is used in application such as replaces discrete RC active filters and LC filter modules, antialiasing/reconstruction filters, dual or I-and-Q channels (two matched 2nd order filters in one package), single-ended to differential conversion, video signal processing etc.

• Operating supply voltage is 2.7V to 11V
• Rail-to-rail input and output voltages
• Single-ended or differential output, can be connected as a bandpass filter
• Internal capacitors trimmed to ±0.75%
• Total harmonic distortion is -84dB typical at (fC = 1MHz, RFIL = 1.28K, IN = 200KHz, VIN = 1VP-P)
• Cut-off frequency range is 0.2MHz to 10MHz
• Single 4-pole low pass filter or matched pair of 2-pole low pass filters
• Wideband output noise is 22µVRMS typical at (fC = 1MHz, RFIL = 1.28K, BW = 2MHz)
• Operating specified temperature is -40°C to 85°C
• Package style is 16-lead plastic narrow SSOP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party