Preliminary
8-90
RF2475
Rev A2 010918
8
NOTES:
1 LNA input IP3 response to out of band frequencies (824 Hz to 849 MHz) should be -6dBm in high gain mode.
2 LO IN to LNA IN isolation specification with the 900 MHz TX LO buffer on.
3 Image rejection measured with fRF=869MHz, PRF=-105dBm, fLO=1004MHz; PIMAGE=-85dBm, fIMAGE=1139MHz
Absolute Maximum Ratings
Parameter
Rating
Unit
Supply Voltage
-0.5 to +5.0
VDC
Input LO and RF Levels
+6
dBm
Operating Ambient Temperature
-30 to +85
°C
Storage Temperature
-40 to +150
°C
Parameter
Specification
Unit
Condition
Min.
Typ.
Max.
Cellular Receive Path
Operational Limits
RF Frequency
869
894
MHz
LO Frequency
950
1045
MHz
IF Frequency
100
150
MHz
LNA Input Level
+10
dBm
LO Input Level
-10
-7
-4
dBm
Supply Voltage
2.7
2.8
3.3
V
Cellular Cascaded
Electrical Specifications
TAMB=25°C, VCC=2.8V, fRF=881MHz,
fLO=1016MHz, fIF=135MHz,
LO Level= -7dBm, Image Filter I.L.= 3dB
Gain
23
25
27
dB
High Gain, Gain Select= High
8
dB
Low Gain, Gain Select=Low
Gain Step
14
17
dB
Gain Variations versus Tempera-
ture
+1.5
dB
-30°C to +85°C
Noise Figure
2.2
2.6
dB
High Gain, Gain Select= High
15
20
dB
Low Gain, Gain Select=Low
Input Third Order Intercept1
-10
-9
dBm
High Gain, Gain Select= High
-2.0
-0.5
dBm
Low Gain, Gain Select=Low
Return Loss
10
dB
LNA Input - External Match
10
dB
LNA Output - External Match
10
dB
Mixer RF Input - External Match
10
dB
Mixer LO Input - External Match
Isolation
60
dB
LO IN to LNA IN, Gain Select= High2
60
dB
LO IN to LNA IN, Gain Select= Low
60
dB
Image Rejection3
50
dB
LO IN to IF OUT
50
dB
Mixer RF IN to IF OUT
35
dB
Mixer RF IN to TX LO OUT
IF Output Impedance
>10
k
Ω
Mixer “ON”
Supply Current
20
25
mA
Not including TX LO buffer
TX LO Buffer
LO Output Buffer
-7
-4
dBm
LO Input Level= -7dBm
Harmonic Output
-22
-25
dBc
LO Input Level= -7dBm
Isolation - LO OUT to LO IN
25
dB
TX LO Buffer ON
Supply Current
7.5
9.0
mA
Logic
Input Low
0.5
V
VCC=2.7V to 2.9V
Input High
2.0
V
VCC=2.7V to 2.9V
Input Current
TBD
µA
Input Impedance
TBD
k
Ω
Caution! ESD sensitive device.
RF Micro Devices believes the furnished information is correct and accurate
at the time of this printing. However, RF Micro Devices reserves the right to
make changes to its products without notice. RF Micro Devices does not
assume responsibility for the use of the described product(s).
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