AK1291_17 Datasheet, PDF (1/16 Pages) Asahi Kasei Microsystems – IF Variable Gain Amplifier with RSSI

[AK1291]
AK1291
IF Variable Gain Amplifier with RSSI
1. Overview
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.
2. Feature
▪Operation Frequency Range
▪Gain variable range
▪Noise Figure
▪IMD3
▪Supply Voltage
▪Operating Temperature
▪Package
90MHz to 300MHz
-9dB to 21dB
7dB @max gain
70dBc @output power -15dBm
4.75V to 5.25V
-40°C to +85°C
24pin QFN0404
3. Block Diagram
VSS1
VSS6 ^COM VSS5
IAVDD OAVDD _VSS4
RFINP
RFINN
Buffer
PVDD
GCON
VSS2
Detector
BIAS ENAB
DETOUT
VSS3
RFOUT
DETVDD
DETIN
Figure. 1 Block Diagram
MS-E-1148-02
-1-
2015/6