MAX2180EVKIT# Maxim Integrated, MAX2180EVKIT# Datasheet - Page 7

• Manufacturer Part Number: MAX2180EVKIT#
• Description: RF Development Tools MAX2180 Eval Kit
• Manufacturer: Maxim Integrated
• Type: RF Amplifiersr
• Series: MAX2180r

Specifications of MAX2180EVKIT#

• Rohs: yes
• Product: Evaluation Kits
• Tool Is For Evaluation Of: MAX2180
• Frequency: 148 kHz to 30 MHz, 65 MHz to 162.5 MHz
• Operating Supply Voltage: 8 V to 24 V

Table 1. AM Signal Path Gain
Table 2. AM Signal Path Attack Point
The MAX2180 allows independent variation of the gain
and AGC attack points on the AM and FM signal paths.
Gain and attack point are adjusted by changing the con-
ditions on the AMGAIN, AMDET, FMGAIN, and FMDET
pins.
The gain of the AM signal path is adjusted by chang-
ing the resistor RAM, which is connected to AMGAIN
through a 0.1FF capacitor. Table 1 shows the gain asso-
ciated with several resistor values. The output attack
point of the AM signal path can be set to one of three
values depending on the state of the AMDET pin, as
shown in Table 2.
20, 21,
22, 23
PIN
18
19
24
—
PIN AMDET
RAM (I)
Ground
NC3, NC4,
NC5, NC6
Open
V
180
330
AMCMP
LDO
22
68
NAME
RBIAS
V
0
BATT
EP
AM/FM Car Antenna Low-Noise Amplifier
Detailed Description
Connect a 1% Tolerance 20kI Resistor to Ground
Battery Supply
No Connection to Die. Use as a thermal path on layer 1 of PCB from exposed pad to thermal sink.
AM Compensation. Leave open for RAM < 68I and short for RAM R 68I. See the Detailed
Description section.
Exposed Pad. Ground.
Setting Signal Path Gain
and AGC Attack Point
AM OUTPUT ATTACK
AM GAIN (dB, TYP)
POINT (dBµV, TYP)
AM Signal Path
6.5
2.5
0.5
79
83
86
-1
5
Table 3. FM Signal Path Gain
Table 4. FM Signal Path Attack Point
Note: For values of RAM R 68I, pin AMCMP must be
shorted to ground. For values of RAM < 68I, leave
AMCMP open.
The FM signal path can be configured for either high-
gain or low-gain operation. In the high-gain configura-
tion, typical FM gain is 10.5dB. In the low-gain configura-
tion, typical FM gain can be set using the FMGAIN pin as
shown in Table 3. Component values for high-gain and
low-gain configurations are shown in Table 5.
The output attack point of the FM signal path is adjusted
by changing the resistor RFMDET, connected to the
FMDET pin. Table 4 shows the attack point associated
with several resistor values.
DESCRIPTION
RFMDET (kI)
PIN FMGAIN
Ground
Open
V
Pin Description (continued)
LDO
10
18
27
39
47
56
68
0
FM OUTPUT ATTACK
POINT (dBµV, TYP)
FM GAIN (dB, TYP)
FM Signal Path
104
100
8.5
7.1
5.8
96
95
94
93
92
90
7