Datasheet

MAX2235
+3.6V, 1W Autoramping Power
Amplifier for 900MHz Applications
_______________________________________________________________________________________ 3
Note 1: ≥ +25°C guaranteed by production test, <+25°C guaranteed by design and characterization.
Note 2: MAX guaranteed by production test, MIN guaranteed by design and characterization.
Note 3: Guaranteed by design and characterization.
Note 4: For optimum performance at a given frequency, design the output matching network for maximum output power.
Note 5: Gain is monotonic with V
GC
.
Note 6: 0.068µF capacitor from RAMP to REF. Time is measured from SHDN low-to-high transition to +29dBm output power, or
from SHDN high-to-low transition to -25dBm output power.
Note 7: Harmonics measured on the evaluation kit, which provides some harmonic attenuation in addition to the rejection provided
by the IC. The combined suppression is specified.
P
RFIN
adjusted to give P
RFOUT
= +24dBm
P
RFOUT
= +30dBm
P
RFIN
= 0dBm, V
GC
adjusted to give
P
RFOUT
= 24dBm
315
610
Average Supply Current
%47PAEPower Added Efficiency
0.6V < V
GC
< 2.3V dB37
dB24 26G
P
Power Gain
Gain-Control Range (Note 5)
mW/µs1.6dP/dt
Auto-Power Ramping-Up
Maximum Slope (Note 6)
Input VSWR relative to input impedance in
operating mode
V
CC
= 2.7V to 5.5V, 6:1 VSWR at any phase
angle
1.5:1∆VSWR
Standby Mode Input VSWR
Change
50Ω source impedance
dBc-60
Maximum Nonharmonic
Spurious Output Due to Load
Mismatch
1.5:1VSWRInput VSWR
mW/µs-1.3dP/dt
Auto-Power Ramping-Down
Minimum Slope (Note 6)
30kHz BW at offset = 45MHz dBm-90Noise Power
40 48
P
RFIN
= +7dBm dBc30 38Harmonic Suppression (Note 7)
mA
305
I
CC
P
RFIN
= 0dBm dB
25 36
Off-Isolation
V
SHDN
= 0.5V
GC = GND
AC ELECTRICAL CHARACTERISTICS
(MAX2235 Evaluation Kit, GC = unconnected, P
RFIN
adjusted to give P
RFOUT
= +30dBm, f
RFIN
= 836MHz, V
CC
= V
SHDN
= +3.6V,
T
A
= +25°C, unless otherwise noted.) (Note 3)
CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER
V
CC
= 2.7V 28.0
V
CC
= 3.0V, T
A
= T
MIN
to T
MAX
25.5
V
CC
= 3.0V (Note 4)
27.0 28.7
V
CC
= 3.6V
30.3
V
CC
= 5.0V
dBm
32.5
P
RFOUT
Minimum Output Power
MHz
800 1000
f
RFIN
Operational Frequency Range
(Note 4)