IF Variable Gain Amplifier with RSSI

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AK1291 is a variable gain amplifier with a power detector. It’s operating frequency ranges from
90MHz to 300MHz. The gain control adopts an analog signal control, and the gain characteristic is dB
linear. The gain control range is -9dB to +21dB and a dynamic range is 30dB. AK1291 has single-ended
input and output, with impedance of 50 Ω. As a typical characteristic, NF is 7dB (at maximum gain) , and
IMD3 is 70dBc at output power of -15dBm ,at frequency of 165MHz.The power supply voltage is 4.75V
to 5.25V.

Key Features

▪Operation Frequency Range 90MHz to 300MHz
▪Gain variable range -9dB to 21dB
▪Noise Figure 7dB @max gain
▪IMD3 70dBc @output power -15dBm
▪Supply Voltage 4.75V to 5.25V
▪Operating Temperature -40°C to +85°C
▪Package 24pin QFN0404

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Block Diagram

Block Diagram

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