MAX2685(1999) Ver la hoja de datos (PDF) - Maxim Integrated
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MAX2685 Datasheet PDF : 10 Pages
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Low-Cost, 900MHz, Low-Noise Amplifier
and Downconverter Mixer
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..............................................................-0.3V to +6V
LNAIN Input Power (50Ω source)...................................+10dBm
LO Input Power (50Ω source) ........................................+10dBm
MIXIN Input Power (50Ω source) ...................................+10dBm
IFOUT+, IFOUT- to GND ..........................................-0.3V to +6V
LNAOUT to GND ......................................................-0.3V to +6V
GAIN, SHDN to GND..................................-0.3V to (VCC + 0.3V)
Continuous Power Dissipation (TA = +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C)............667mW
Junction Temperature ......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(VCC = +2.7V to +5.5V, V SHDN = +2V, VGAIN = +2V, LNAIN = LNAOUT = MIXIN = LO = unconnected, IFOUT+ = IFOUT- = VCC, TA
= -40°C to +85°C. Typical values are at TA = +25°C and VCC = +3V, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Supply Voltage Range
2.7
5.5
V
Operating Supply Current
Shutdown Supply Current
Logic Input Voltage High
Logic Input Voltage Low
GAIN = VCC
GAIN = GND
SHDN = GND
GAIN, SHDN
GAIN, SHDN
8.5
14.1
mA
3.8
6.4
0.1
1.0
µA
2.0
V
0.5
V
Logic Input Current
VSHDN = VGAIN = 0 to 5.5V
±0.01 ±1
µA
AC ELECTRICAL CHARACTERISTICS
(MAX2685 EV kit, VCC = V SHDN = +3V, fLNAIN = fMIXIN = 880MHz, fLO = 960MHz, PLNAIN = -30dBm, PLO = -8dBm, PMIXIN = -25dBm,
differential IFOUT operation, Zo = 50Ω, TA = +25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
LOW-NOISE AMPLIFIER (LNA)
RF Frequency Range (Note 1)
800
1000 MHz
LNA Gain
GAIN = VCC
GAIN = GND
13
15
16.2
dB
-14
-12 -10.3
LNA Gain Variation over Temperature
LNA Noise Figure
GAIN = VCC, TA = TMIN to TMAX (Note 2)
GAIN = VCC
GAIN = GND
0.9
1.6
dB
1.4
dB
12.2
LNA Input IP3
GAIN = VCC (Note 3)
GAIN = GND (Note 4)
-4.1
+16.2
dBm
LNA Input 1dB Compression
LNAOUT Port Return Loss
GAIN = VCC
GAIN = VCC
GAIN = GND
-18.4
-18.6
-11.3
dBm
dB
DOWNCONVERTER MIXER
RF Frequency Range (Note 1)
800
1000 MHz
Mixer Conversion Gain
GAIN = VCC
GAIN = GND
4.7
6.1
7.0
dB
2.5
4.6
6.0
2 _______________________________________________________________________________________
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