Rainbow Electronics MAX2644 - Manual (Page 7)

MAX2644
2.4GHz SiGe, High IP3 Low-Noise Amplifier
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Table 3. MAX2644 Typical Scattering Parameters
(R
BIAS = 3.9k
Ω, V
CC = +3.0V, T A = +25°C.)
FREQ.
(MHz)
S11
MAG
S11 PHASE
(DEGREES) S21
MAG
S21 PHASE
(DEGREES) S12
MAG
S12 PHASE
(DEGREES) S22
MAG
S22 PHASE
(DEGREES)
2200 0.4894 -75.32 3.7368 -173.73 0.0348 156.35 0.2729 -62.97
2250 0.4566 -72.73 3.7718 -177.51 0.0363 147.30 0.2459 -53.68
2300 0.4335 -68.17 3.8855 177.43 0.0369 132.32 0.2211 -41.12
2350 0.4343 -61.46 3.9783 171.34 0.0344 116.21 0.2177 -21.15
2400 0.4695 -57.00 4.0230 165.15 0.0272 95.31 0.2823 -2.41
2450 0.5156 -57.52 4.0087 157.68 0.0179 70.07 0.3924 1.25
2500 0.5403 -61.04 3.8380 149.58 0.0079 42.40 0.4849 -2.71
2550 0.5423 -63.93 3.5140 143.30 0.0018 -46.47 0.5476 -7.30
2600 0.5361 -66.30 3.2048 140.25 0.0055 -112.91 0.5881 -11.35
2650 0.5280 -68.08 3.1204 138.55 0.0100 -132.25 0.6170 -14.57
2700 0.5217 -69.29 3.0860 132.16 0.0121 -133.97 0.6418 -17.44
Table 4. MAX2644 Typical Noise
Parameters at V
CC
= +3.0V, T
A
= +25°C,
R BIAS = 750
Ω
FREQUENCY
(MHz)
F MIN
(dB)
Γ
opt

Γ
opt
ANGLE
R N
( Ω)
2400 1.725 0.361 66.13 24.38
2450 1.747 0.360 66.93 24.76
2500 1.769 0.358 67.72 25.14
Table 5. MAX2644 Typical Noise
Parameters at V
CC
= +3.0V, T
A
= +25°C,
R BIAS = 1.2k
Ω
FREQUENCY
(MHz)
F MIN
(dB)
Γ
opt

Γ
opt
ANGLE
R N
( Ω)
2400 1.570 0.409 69.84 21.77
2450 1.589 0.408 70.63 21.94
2500 1.609 0.406 71.63 22.42
Table 6. MAX2644 Typical Noise
Parameters at V
CC
= +3.0V, T
A
= +25°C,
R BIAS = 3.9k
Ω
FREQUENCY
(MHz)
F MIN
(dB)
Γ
opt

Γ
opt
ANGLE
R N
( Ω)
2400 1.497 0.510 86.55 20.58
2450 1.517 0.507 86.50 20.90
2500 1.538 0.504 88.18 21.25
Chip Information
TRANSISTOR COUNT: 87