Preliminary
RF2475
Specification
Typ.
Parameter
Unit
Condition
Min.
Max.
PCS Receive Path, Cont’d
T
=25°C, V =2.8V, f =1960MHz,
CC RF
=2095MHz, f =135MHz,
IF
AMB
PCS Cascaded
Electrical Specifications
f
LO
LO Level=-7dBm, Image Filter I.L.=3dB
High Gain, Gain Select=High
Low Gain, Gain Select=Low
Gain
24
17
26
6
20
28
dB
dB
dB
dB
Gain Step
Gain Variations versus Tempera-
+1.5
-30°C to +85°C
ture
Noise Figure
2.8
15
-10
-0.5
3.3
20
dB
dB
dBm
dBm
dB
dB
dB
dB
dB
High Gain, Gain Select=High
Low Gain, Gain Select=Low
High Gain, Gain Select=High
Low Gain, Gain Select=Low
LNA Input - External Match
LNA Output - External Match
Mixer RF Input - External Match
Mixer LO Input - External Match
Input Third Order Intercept
Return Loss
-12
-2
10
10
10
10
40
4
Isolation
LO IN to LNA IN, Gain Select=High
40
35
dB
dB
LO IN to LNA IN, Gain Select=Low
5
37
Image Rejection
>53
>40
35
dB
dB
dB
LO IN to IF OUT
Mixer RF IN to IF OUT
Mixer RF IN to TX LO OUT
8
6
-68
dBc
Half IF Spur
IF Output Impedance
Supply Current
>10
28
kΩ
mA
Mixer “ON”
Including the LO doubler, but not the TX LO
buffer
33
TX LO Buffer
LO Doubler Output Buffer
Harmonic Output
Doubler Harmonic Output
Isolation - LO OUT to LO IN
Supply Current
-5
-3
-25
-50
dBm
dBc
dBc
dB
LO Input Level=-7dBm
LO Input Level=-7dBm
Fundamental Suppression
TX LO Buffer ON
Including the LO doubler and the TX LO
buffer
-22
-45
35
7.5
9.0
0.5
mA
Logic
Input Low
V
V
V
V
=2.7V to 2.9V
=2.7V to 2.9V
CC
CC
Input High
2.0
Input Current
Input Impedance
NOTES:
TBD
TBD
µA
kΩ
4 LO IN to LNA IN isolation specification with the 1900MHz TX LO buffer on.
5 Image rejection measured with fRF=1930MHz, PRF=-105dBm, fLO=2065MHz; PIMAGE=-85dBm, fIMAGE=2220MHz.
Image interferer should be suppressed 11dB below desired signal at the IF output.
6 2LO+2RF Half IF Spur. (1/2 IF spur relative to P1/2RF) fRF=1930MHz, PRF=-105dBm, fLO=2065MHz;
F
1/2IF=1997.5MHz, P1/2IF=-48dBm.
1/2 IF interferer should be suppressed 11dB below desired signal at the IF output.
8-92
Rev A2 010918
RFMD [ RF MICRO DEVICES ]
