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參數(shù)資料
| 型號： | RF2475 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | DUAL-BAND LOW NOISE AMPLIFIER/MIXER WITH FREQUENCY DOUBLER |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC28 |
| 封裝： | 5 X 5 MM, LCC-28 |
| 文件頁數(shù)： | 4/20頁 |
| 文件大?。?/td> | 547K |
| 代理商： | RF2475 |
Preliminary
8-92
RF2475
Rev A2 010918
8
F
NOTES:
4 LO IN to LNA IN isolation specification with the 1900MHz TX LO buffer on.
5 Image rejection measured with f
RF
=1930MHz, P
RF
=-105dBm, f
LO
=2065MHz; P
IMAGE
=-85dBm, f
IMAGE
=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 P
1/2RF
) f
RF
=1930MHz, P
RF
=-105dBm, f
LO
=2065MHz;
F
1/2IF
=1997.5MHz, P
1/2IF
=-48dBm.
1/2 IF interferer should be suppressed 11dB below desired signal at the IF output.
Parameter
Specification
Typ.
Unit
Condition
Min.
Max.
PCS Receive Path, Cont’d
PCS Cascaded
Electrical Specifications
T
AMB
=25°C, V
CC
=2.8V, f
RF
=1960MHz,
f
LO
=2095MHz, f
IF
=135MHz,
LO Level=-7dBm, Image Filter I.L.=3dB
High Gain, Gain Select=High
Low Gain, Gain Select=Low
Gain
24
26
6
20
28
dB
dB
dB
dB
Gain Step
Gain Variations versus Tempera-
ture
Noise Figure
17
+1.5
-30°C to +85°C
2.8
15
-10
-0.5
3.3
20
dB
dB
dBm
dBm
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBc
k
mA
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
LO IN to LNA IN, Gain Select=High
4
LO IN to LNA IN, Gain Select=Low
Image Rejection
5
LO IN to IF OUT
Mixer RF IN to IF OUT
Mixer RF IN to TX LO OUT
Input Third Order Intercept
-12
-2
10
10
10
10
40
40
35
Return Loss
Isolation
37
>53
>40
35
-68
>10
28
Half IF Spur
6
IF Output Impedance
Supply Current
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
-22
-45
35
-3
-25
-50
dBm
dBc
dBc
dB
mA
LO Input Level=-7dBm
LO Input Level=-7dBm
Fundamental Suppression
TX LO Buffer ON
Including the LO doubler and the TX LO
buffer
7.5
9.0
Logic
Input Low
Input High
Input Current
Input Impedance
0.5
V
V
μ
A
k
V
CC
=2.7V to 2.9V
V
CC
=2.7V to 2.9V
2.0
TBD
TBD
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