Dual-AGC Amplifier
Source: Vishay Siliconix
Six-pin SOT363-packaged ICs combine two high-gain automatic gain control (AGC) amps on a single chip
Vishay Siliconix363-packaged ICs combine two high-gain automatic gain control (AGC) amps on a single chip. Dubbed Dual-MOSMIC devices, these ICs can be used as low-noise input stages for UHF and VHF tuners, or in set-top boxes. ICs eliminate the need for separate transistors to handle VHF and UHF bands. Three 13-cent flavors offer a choice of trans-admittance specs of 24 mSiemens for the TSDF52424, 30 mS for the TSDF53030, and 40 mS for the TSDF54040. All three ICs tout gate protection diodes, on-chip resistors and a biasing network, eliminating many external passives. AGC range is 45 dB. Drain current is 20 mA for '52424 and '53030 types, and 30 mA for the '54040.
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