The circuit is followed by a current squaring circuit
, a current inverter and an analog current multiplier.The utilization of this fabricated AGC chip--in current-mode RF receiver systems, hearing aid instruments and television tuners--will contribute to reducing the power consumption of such systems, which consequently reduces their need for high capacity batteries.
The input to the PLL phase detector contains a squaring circuit
. As discussed previously, the squaring circuit
will convert the dominant spur into two spurious sidebands with 6 dB of attenuation.