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MAX2181A Datasheet(Arkusz danych) 6 Page - Maxim Integrated Products

Numer części MAX2181A
Szczegółowy opis  FM Automotive Low-Noise Amplifier
Pobierz  9 Pages
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Producent  MAXIM [Maxim Integrated Products]
Strona internetowa  http://www.maxim-ic.com
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MAX2181A
FM Automotive Low-Noise Amplifier
www.maximintegrated.com
Maxim Integrated │ 6
Detailed Description
Setting Signal Path Gain
and AGC Attack Point
The MAX2181A allows independent variation of the gain
and AGC attack points on the FM signal path. Gain and
attack point are adjusted by changing the conditions on
the FMGAIN and FMDET pins.
FM Signal Path
Typical FM gain can be set using the FMGAIN pin as shown in
Table 1. The output attack point of the FM signal path is adjusted
by changing the resistor RFMDET, connected to the FMDET pin.
Table 2 shows the attack point associated with several resistor
values.
Layout Recommendations
For best performance, the device must be mounted on a
PCB that is designed for a low thermal resistance. The
backside ground of the MAX2181A should be connected
to a thermal ground plane on the PCB using at least nine
plated through holes.
Refer to
www.maximintegrated.com for the MAX2181A
Evaluation Kit schematic, Gerber data, PADS layout file,
and BOM information.
Table 1. FM Signal Path Gain
Table 2. FM Signal Path Attack Point
PIN FMGAIN
FM GAIN (dB, TYP)
Ground
6.0
Open
7.2
VDD
8.3
RFMDET (kΩ)
FM OUTPUT ATTACK
POINT (dBµV, TYP)
0
92
13
93.5
22
95
33
97
43
99
51
101.5
62
104
71
107




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