High-frequency fully integrated OTA-C filters using a 7.2 GHz bipolar OTA

Using a complementary BJT process with the maximum f(T/sub npn/)=7.2 GHz and f(T/sub pnp/)=4.5 GHz, an OTA with -3 db bandwidth of 7.2 GHz has been designed by proposing some broadbanding and phase-compensation techniques. To demonstrate the application in OTA-C continuous-time filter design, a 225 MHz OTA-C lowpass filter and a 250 MHz OTA-C biquadratic bandpass filter are realized and presented concisely.<
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