GSM900 and DCS1800/PCS1900
Dual-Band, Low-Noise Amplifiers
AC ELECTRICAL CHARACTERISTICS—MAX2651 (continued)
(MAX2651 EV kit, fIN = 945MHz (GSM band), fIN = 1850MHz (DCS band), PIN = -30dBm, input and output matching networks are
optimized for the frequency band of interest, all input/output ports terminated in 50Ω, VCC = +3V, TA = +25°C, unless otherwise noted.)
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
Input Third-Order Intercept Point IIP3
(Note 5)
(Note 6)
DCS band, high-gain mode
(BAND = GAIN = VCC)
DCS band, low-gain mode
(BAND = VCC, GAIN = GND)
GSM band, high-gain mode
(BAND = GND, GAIN = VCC)
GSM band, low-gain mode
(BAND = GND, GAIN = GND)
Input 1dB Compression Point
IP-1dB
DCS band, high-gain mode
(BAND = GAIN = VCC)
DCS band, low-gain mode
(BAND = VCC, GAIN = GND)
GSM band, high-gain mode
(BAND = GND, GAIN = VCC)
GSM band, low-gain mode
(BAND = GND, GAIN = GND)
DCS band, high-gain mode
(BAND = GAIN = VCC)
Input Return Loss
S112
DCS band, low-gain mode
(BAND = VCC, GAIN = GND)
GSM band, high-gain mode
(BAND = GND, GAIN = VCC)
GSM band, low-gain mode
(BAND = GAIN = GND)
MIN TYP MAX UNITS
-11.5 -10
-1.5
0.5
-10.5 -8.5
dBm
-2.5
0.5
-20
-18
-9.5
-8
-20
-18
dBm
-10.5 -8.5
-11
-8.5
-14
-12
dB
-11
-8.5
-20
-15
Output Return Loss
S222
DCS band, high-gain mode
(BAND = GAIN = VCC)
DCS band, low-gain mode
(BAND = VCC, GAIN = GND)
GSM band, high-gain mode
(BAND = GND, GAIN = VCC)
GSM band, low-gain mode
(BAND = GAIN = GND)
-14
-10
-12
-10
dB
-19
-15
-20
-15
Reverse Isolation
S122
DCS band, high-gain mode
(BAND = GAIN = VCC)
DCS band, low-gain mode
(BAND = VCC, GAIN = GND)
GSM band, high-gain mode
(BAND = GND, GAIN = VCC)
GSM band, low-gain mode
(BAND = GAIN = GND)
-32
-29
-20
-18
dB
-39
-35
-22
-20
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