The designing of high performance analog circuits is getting more & more challenging with the centre of attention towards reduced supply voltages. In this paper, telescopic OTA is chosen for designing signal processing circuits because it has high gain, high speed and power consumption of this OTA is comparatively low. Signal processing circuits includes oscillators, amplifiers and filters. In oscillator, Colpitts oscillator is designed and for amplification purpose, instrumentation amplifier is designed. signal processing circuits are incomplete without filters so Chebyshev low pass filter is designed. Design and simulation is done on Tanner EDA 13.0.