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

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