Ac electrical characteristics – Rainbow Electronics MAX2685 User Manual
Page 2
MAX2685
Low-Cost, 900MHz, Low-Noise Amplifier
and Downconverter Mixer
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, V
SHDN
= +2V, V
GAIN
= +2V, LNAIN = LNAOUT = MIXIN = LO = unconnected, IFOUT+ = IFOUT- = V
CC
, T
A
= -40°C to +85°C. Typical values are at T
A
= +25°C and V
CC
= +3V, unless otherwise noted.)
AC ELECTRICAL CHARACTERISTICS
(MAX2685 EV kit, V
CC
= V
SHDN
= +3V, f
LNAIN
= f
MIXIN
= 880MHz, f
LO
= 960MHz, P
LNAIN
= -30dBm, P
LO
= -8dBm, P
MIXIN
= -25dBm,
differential IFOUT operation, Z
o
= 50
Ω, T
A
= +25°C, unless otherwise noted.)
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.
V
CC
to GND ..............................................................-0.3V to +6V
LNAIN Input Power (50
Ω source)...................................+10dBm
LO Input Power (50
Ω source) ........................................+10dBm
MIXIN Input Power (50
Ω source) ...................................+10dBm
IFOUT+, IFOUT- to GND ..........................................-0.3V to +6V
LNAOUT to GND ......................................................-0.3V to +6V
GAIN, SHDN to GND..................................-0.3V to (V
CC
+ 0.3V)
Continuous Power Dissipation (T
A
= +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, 10s) .................................+300°C
SHDN = GND (Note 1)
GAIN = V
CC
(Note 1)
GAIN, SHDN
GAIN, SHDN
V
SHDN
= V
GAIN
= 0 to 5.5V (Note 1)
CONDITIONS
µA
0.1
1.0
Shutdown Supply Current
8.5
14.1
V
2.7
5.5
Supply Voltage Range
V
2.0
Logic Input Voltage High
V
0.5
Logic Input Voltage Low
µA
±0.01
±1
Logic Input Current
UNITS
MIN
TYP
MAX
PARAMETER
GAIN = GND (Note 1)
mA
3.8
6.4
Operating Supply Current
GAIN = GND (Note 1)
dB
-14
-12
-10.3
GAIN = V
CC
, T
A
= T
MIN
to T
MAX
(Note 3)
LNA Gain
GAIN = V
CC
(Note 1)
GAIN = V
CC
GAIN = GND
GAIN = V
CC
CONDITIONS
dB
0.9
1.6
LNA Gain Variation over Temperature
13
15
16.2
1.4
dB
12.2
LNA Noise Figure
-18.4
LNA Input 1dB Compression
UNITS
MIN
TYP
MAX
PARAMETER
MHz
800
1000
RF Frequency Range (Note 2)
GAIN = V
CC
GAIN = GND
dBm
-18.6
dB
-11.3
LNAOUT Port Return Loss
MHz
800
1000
RF Frequency Range (Note 2)
GAIN = GND (Note 1)
dB
2.5
4.6
6.0
Mixer Conversion Gain
GAIN = V
CC
(Note 1)
4.7
6.1
7.0
GAIN = V
CC
(Note 4)
GAIN = GND (Note 5)
-4.1
dBm
+16.2
LNA Input IP3
LOW-NOISE AMPLIFIER (LNA)
DOWNCONVERTER MIXER