MAX2640AUT+T Maxim Integrated Products, MAX2640AUT+T Datasheet - Page 7

• Manufacturer Part Number: MAX2640AUT+T
• Description: RF Amplifier SiGe LNA for Applica tions in the 400MHz
• Manufacturer: Maxim Integrated Products

Specifications of MAX2640AUT+T

• Operating Frequency: 300 MHz to 1500 MHz
• P1db: - 22 dBm
• Noise Figure: 0.9 dB at 900 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A properly designed PC board is essential to any
RF/microwave circuit. Be sure to use controlled imped-
ance lines on all high-frequency inputs and outputs.
The power supply should be bypassed with decoupling
capacitors located close to the device V
long V
decoupling capacitors. These additional capacitors
can be located further away from the device package.
Table 3. MAX2640 Typical Noise Parameters at V
Table 4. MAX2641 Typical Noise Parameters at V
FREQUENCY (MHz)
FREQUENCY (MHz)
CC
Layout and Power-Supply Bypassing
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
1000
1100
1200
1300
1400
1500
400
500
600
700
800
900
lines, it may be necessary to add additional
_______________________________________________________________________________________
f
f
MIN
MIN
0.66
0.69
0.72
0.75
0.78
0.82
0.85
0.89
0.93
0.97
1.01
1.06
1.02
1.05
1.08
1.10
1.14
1.17
1.20
1.23
1.27
1.30
1.34
(dB)
(dB)
CC
pins. For
Ultra-Low-Noise Amplifiers
300MHz to 2500MHz SiGe
⏐ Γ
⏐ Γ
0.56
0.54
0.51
0.48
0.46
0.43
0.40
0.37
0.35
0.32
0.29
0.26
0.43
0.40
0.38
0.36
0.32
0.30
0.28
0.25
0.22
0.19
0.17
opt
opt
⏐
⏐
Proper grounding of the GND pins is essential. If the
PC board uses a topside RF ground, connect it directly
to all GND pins. For a board where the ground plane is
not on the component side, the best technique is to
connect the GND pin to the board with a plated
through-hole close to the package.
CC
CC
= +3V, T
= +3V, T
Γ
Γ
opt
opt
A
A
21
25
30
35
40
45
50
56
62
68
77
84
ANGLE
44
47
50
54
58
62
66
71
77
82
91
ANGLE
= +25°C
= +25°C
R
R
12.5
11.9
11.3
10.8
10.2
12.4
11.8
11.3
10.8
10.3
N
N
9.7
9.3
8.8
8.3
7.9
7.4
7.0
9.9
9.4
9.0
8.6
8.3
8.0
( Ω )
( Ω )
7