应用功能： Low Noise, 90 MHz Variable-Gain Amplifier The AD603 is a low noise, voltage-controlled amplifier for usein RF and IF AGC systems. It providesaccurate, pin selectablegains of –11 dBto+31dBwithabandwidth of 90 MHz or 9 dBto 51 dB with a bandwidth of9MHz. Any intermediate gainrange may be arranged using one external resistor. The inputreferred noise spectral density is only 1.3 nV/√Hz and power consumption is 125 mW at the recommended ±5 V supplies.
