Owner's manual

MAX2651/MAX2652/MAX2653
GSM900 and DCS1800/PCS1900
Dual-Band, Low-Noise Amplifiers
4 _______________________________________________________________________________________
AC ELECTRICAL CHARACTERISTICS—MAX2651 (continued)
(MAX2651 EV kit, f
IN
= 945MHz (GSM band), f
IN
= 1850MHz (DCS band), P
IN
= -30dBm, input and output matching networks are
optimized for the frequency band of interest, all input/output ports terminated in 50Ω, V
CC
= +3V, T
A
= +25°C, unless otherwise noted.)
(Note 2)
GSM band, high-gain mode
(BAND = GND, GAIN = V
CC
)
DCS band, low-gain mode
(BAND = V
CC
, GAIN = GND)
DCS band, high-gain mode
(BAND = GAIN = V
CC
)
GSM band, low-gain mode
(BAND = GAIN = GND)
GSM band, high-gain mode
(BAND = GND, GAIN = V
CC
)
DCS band, low-gain mode
(BAND = V
CC
, GAIN = GND)
DCS band, high-gain mode
(BAND = GAIN = V
CC
)
Reverse Isolation
-19 -15
-12 -10
dB
-14 -10

S
22

2
Output Return Loss
-20 -15
-11 -8.5
-14 -12
dB
-11 -8.5

S
11

2
Input Return Loss
GSM band, low-gain mode
(BAND = GAIN = GND)
GSM band, high-gain mode
(BAND = GND, GAIN = V
CC
)
DCS band, low-gain mode
(BAND = V
CC
, GAIN = GND)
DCS band, high-gain mode
(BAND = GAIN = V
CC
)
GSM band, low-gain mode
(BAND = GAIN = GND)
-22 -20
-39 -35
-20 -18
dB
-32 -29

S
12

2
-20 -15
GSM band, low-gain mode
(BAND = GND, GAIN = GND)
GSM band, high-gain mode
(BAND = GND, GAIN = V
CC
)
(Note 5)
DCS band, low-gain mode
(BAND = V
CC
, GAIN = GND)
-10.5 -8.5
-20 -18
-9.5 -8
dBmIP
-1dB
Input 1dB Compression Point
dBm
-11.5 -10
IIP3Input Third-Order Intercept Point
DCS band, high-gain mode
(BAND = GAIN = V
CC
)
DCS band, high-gain mode
(BAND = GAIN = V
CC
)
-1.5 0.5
DCS band, low-gain mode
(BAND = V
CC
, GAIN = GND)
(Note 6)
-10.5 -8.5
-2.5 0.5
GSM band, high-gain mode
(BAND = GND, GAIN = V
CC
)
GSM band, low-gain mode
(BAND = GND, GAIN = GND)
CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER
-20 -18