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900MHz ISM-Band, 250mW Power Amplifiers
with Analog or Digital Gain Control
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2232/MAX2233 Evaluation Kit, V CC = +3.6V, V CTRL = +2.2V, SHDN = V CC (MAX2232), D0 = D1 = V CC (MAX2233),
P RFIN = 0dBm, ? RFIN = 915MHz, T A = +25°C, unless otherwise noted.)
PARAMETER
Output Power, Low-Power Mode
Gain-Control Range (Note 3)
SYMBOL
P OUT
? G P
CONDITIONS
D0 = V CC , D1 = GND (MAX2233 only)
0.6V < V CTRL < 2.2V (MAX2232 only)
MIN
TYP
6.5
23.6
MAX
UNITS
dBm
dB
Power-Added Efficiency
PAE
44
%
Power-Added Efficiency at
+21dBm Output Power
Supply Current, Medium-Power
Mode
Supply Current, Low-Power
Mode
Input VSWR
Input VSWR Change, Shutdown
Mode (Notes 1, 4)
Input VSWR Change, Standby
Mode (Notes 1, 4)
Off-Isolation
PAE
I CC
I CC
VSWR
? VSWR
? VSWR
CTRL adjusted to give P RFOUT = +21dBm
(MAX2232 only)
D0 = GND, D1 = V CC (MAX2233 only)
D0 = V CC , D1 = GND (MAX2233 only)
Z SOURCE = 50 ? (Note 1)
MAX2232 only
SHDN = D0 = D1 = GND
CTRL = GND (MAX2232 only)
29
78.5
44.0
1.5:1
1.4:1
1.2:1
52
38
%
mA
mA
dB
Maximum Nonharmonic
V CC = +2.7V to +5.5V,
Spurious Output Due to Load
Mismatch
Maximum Output Load VSWR
Without Damage (Note1)
Harmonic Suppression
Autoramping Rise Time
Autoramping Fall Time
Output Power Rise Time
6:1 VSWR at any phase angle,
P RFIN = +5dBm
Any load phase angle, P RFIN = +5dBm,
T A = T MIN to T MAX
(Note 5)
C RAMP = 0.22μF (Notes 1, 6) (MAX2232 only)
C RAMP = 0.22μF (Notes 1, 7) (MAX2232 only)
RAMP+ = RAMP- = unconnected (Note 6)
6:1
-60
29
0.9
3.2
0.4
dBc
dBc
ms
ms
μs
Thermal Shutdown Temperature
Thermal Shutdown Timeout
Period
T TH
t TH
P RFIN = 0dBm, V CC = +3.6V
C TSET = 0.22μF (Note 8)
145
900
°C
ms
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Guaranteed by design.
Operation outside this range is possible, but not characterized.
Gain is monotonic with V CTRL .
Input VSWR relative to input impedance in operating mode.
Harmonics measured on evaluation kit, which provides some harmonic attenuation in addition to the rejection provided by
the IC. The combined suppression is specified.
Note 6: Time measured from SHDN (MAX2232) low-to-high transition to when output power is within 1dB of final value. Includes
effects of 1% tolerance capacitor.
Note 7: Time measured from SHDN (MAX2232) high-to-low transition to when output power is -20dB of final value. Includes effects
of 1% tolerance capacitors.
Note 8: Time from die temperature dropping below Thermal Shutdown Temperature, T TH , to when the device turns itself back on.
_______________________________________________________________________________________
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