MAX2374 데이터 시트보기 (PDF) - Maxim Integrated
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MAX2374 Datasheet PDF : 8 Pages
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SiGe, Variable IIP3, Low-Noise Amplifier
in UCSP Package
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = +2.7V to +5.5V, PLNAIN = -30dBm, fLNAIN = 881MHz, RBIAS = 20kΩ, TA = +25°C, unless other-
wise noted.)
GAIN vs. RBIAS AND TEMPERATURE
20
TA = -40°C
TA = +85°C TA = +25°C
15
GAIN = VCC
10
VCC = 2.75V
TA = -40°C
GAIN = GND
5
TA = +85°C TA = +25°C
0
5
15
25
35
45
RBIAS (kΩ)
NOISE FIGURE vs. FREQUENCY
4.5
4.0
3.5
VCC = 2.75V
3.0
2.5
2.0
GAIN = VCC
1.5
1.0
750
800 850 900 950 1000
FREQUENCY (MHz)
IIP3 vs. RBIAS AND TEMPERATURE
20
A = VGAIN = GND VCC = 2.75V,
f = 881MHz, 882MHz
B = VGAIN = VCC
15
TA = +85°C TA = +25°C
A
TA = -40°C
10
B
TA = -40°C
5
B TA = +25°C
TA = +85°C
0
0
20
40
60
RBIAS (kΩ)
CURRENT vs. VOLTAGE AND RBIAS
20
RBIAS = 10kΩ, GAIN = VCC
15
RBIAS = 10kΩ, GAIN = GND
RBIAS = 20kΩ, GAIN = VCC
10
RBIAS = 43kΩ, GAIN = VCC
5
RBIAS = 20kΩ, GAIN = GND
RBIAS = 43kΩ, GAIN = GND
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
VCC (V)
Pin Description
PIN NAME
FUNCTION
A3
GND
Ground
A2
LNAIN LNA Input Port. Blocking capacitor is required, which may be used as part of the matching network.
A1
GAIN Gain-Control Logic Input. Drive high for high-gain mode. Drive low for low-gain mode.
B1
BIAS
LNA Bias Setting Pin. For nominal bias, connect 20kΩ resistor to VCC. Adjust the resistor value to alter the
linearity of the LNA.
B2
LNAOUT
LNA Output Port. This port requires an external pullup inductor, which may be used as part of the matching
network.
B3
VCC
Supply Voltage Input. Bypass with a 100pF capacitor to GND.
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