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2.4GHz to 2.5GHz
Linear Power Amplifier
AC ELECTRICAL CHARACTERISTICS
(MAX2242 Evaluation Kit, V CC = +3.3V, V SHDN = V CC , 50 ? source and load impedance, f IN = 2.45GHz, T A = +25 ° C, unless other-
wise noted.) (Note 6)
PARAMETER
Frequency Range (Notes 3, 4)
Power Gain (Notes 1, 3)
Gain Variation Over Temperature
(Note 3)
Gain Variation Over V CC ( ± 10%)
(Note 3)
CONDITIONS
T A = +25 ° C
T A = -40 ° C to +85 ° C
T A = -40 ° C to +85 ° C
V CC = +3.0V to +3.6V
MIN
2.4
26.5
25.5
TYP
28.5
± 1.2
± 0.3
MAX
2.5
UNITS
GHz
dB
dB
dB
ACPR,
Output Power (Notes 3, 5, 8)
1 st -side lobe < -33dBc,
21.5
22.5
dBm
2 nd -side lobe < -55dBc
Saturated Output Power
Harmonic Output (2f, 3f, 4f)
Input VSWR
Output VSWR
P IN = +5dBm
Over full P IN range
Over full P OUT range
26.5
-40
1.5:1
2.5:1
dBm
dBc
Power Ramp Turn-On Time
(Note 7)
Power Ramp Turn-Off Time
(Note 7)
RF Output Detector Response
TIme
SHDN from low to high
SHDN from high to low
1
1
2.5
1.5
1.5
5
μs
μs
μs
P o = +22dBm (Note 9)
1.8
RF Output Detector Voltage
P o = +13dBm (Note 9)
P o = +5dBm (Note 9)
0.9
0.55
V
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Specifications over T A = -40 ° C to +85 ° C are guaranteed by design. Production tests are performed at T A = +25 ° C.
Idle current is controlled by external DAC for best efficiency over the entire output power range.
Parameter measured with RF modulation based on IEEE 802.11b standard.
Power gain is guaranteed over this frequency range. Operation outside this range is possible, but is not guaranteed.
Output two-tone third-order intercept point (OIP3) is production tested at T A = +25 ° C. The OIP3 is tested with two signals at
f1 = 2.450GHz and f2 = 2.451GHz with fixed P IN .
Min/max limits are guaranteed by design and characterization.
The total turn-on and turn-off times required for PA output power to settle to within 0.5dB of the final value.
Excludes PC board loss of approximately 0.15dB.
See Typical Operating Characteristics for statistical variation.
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