參數(shù)資料
型號(hào)： RF137
英文描述： Transceiver For GSM Applications
中文描述： 收發(fā)器的GSM應(yīng)用
文件頁(yè)數(shù)： 5/15頁(yè)
文件大?。?/td> 114K
代理商： RF137
Transceiver
RF137
100777C
Conexant - Proprietary
Data Subject to Change
5
October 11, 2000
Table 3. RF137 Electrical Specifications (2 of 4)
(TA = 25
°
C, Vcc = 3.0 V, except where specified)
Parameter
Symbol
Test Condition
Mn
Typical
Max
Units
I/Q Modulator (continued)
Differential output voltage
–20
–15
dBV
Output noise power
NO
10 MHz offset
–130
–126
dBc/Hz
LO feedthrough
–43
–40
dBc
Sideband suppression
45
dB
Spurious (Note 1)
@200 kHz offset
@300 kHz offset
–60
–60
–40
–45
dBc
dBc
Translational Loop
Transmt frequency (input fromVCO)
fTX
800
2000
MHz
LO input frequency
fLO
800
2000
MHz
IF frequency:
with divide-by-2
with divide-by-1
fIF
S4 = 1, CO = 1
S4 = 0, CO = 1
70
70
425
300
MHz
Transmt input power
PIN
with external 50
termnation
–13
–10
–7
dBm
Transmt input impedance
ZIN
differential
300// 0.3
pF
LO input power
PIN
With external 50
termnation
–13
–10
–7
dBm
LO input impedance
ZIN
differential
300// 0.3
pF
Tx output noise
NO
@ 20 MHz offset
(Note 2)
–165
–162
dBc/Hz
Charge pump output current
source/sink
source/sink
high impedance output
IOUT
S10 = 0, CO = 1
S10 = 1, CO = 1
±
1.0
±
0.5
0.02
mA
mA
mA
Tx output spurs (Note 3):
2X spurs
3X spurs
4X spurs
5X spurs
–65
–70
–70
<–70
dBc
dBc
dBc
dBc
Device turn-on and lock time (with respect to enable input)
1 MHz loop bandwidth
30
100
μ
s
VHF VCO
Operating frequency (depends on external resonator)
FVCO
300
850
MHz
Tuning voltage range:
varactor ground referenced
varactor supply referenced
0.5
VCC–
0.5
V
V
Phase noise (Note 4)
10 MHz offset, FVCO =
800 MHz, resonator Q =
20
–145
dBc/Hz
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