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參數(shù)資料
| 型號： | RF3322PCBA |
| 廠商： | RF Micro Devices, Inc. |
| 英文描述： | CABLE REVERSE PATH PROGRAMMABLE GAIN AMPLIFIER |
| 中文描述： | 電纜反向路徑可編程增益放大器 |
| 文件頁數(shù)： | 3/14頁 |
| 文件大?。?/td> | 169K |
| 代理商： | RF3322PCBA |
Preliminary
3-29
RF3322
Rev A2 010518
3
L
A
Note 1:
The enable time is determined by the value of the capacitor on pin 14 (RAMP). A higher capacitor value will
increase the enable time, but will reduce the transient voltage.
Parameter
Specification
Typ.
Unit
Condition
Min.
Max.
AC Specifications, cont’d
Output Step Size
Isolation in Transmit Disable
Mode
Output Noise
Maximum Gain
0.8
-80
1.0
-95
1.1
dB
dBc
Maximum Gain, 20MHz
-37
-30
dBmV/
160kHz
dBmV/
160kHz
dBmV/
160kHz
μ
S
-96dBc for a 59dBmV carrier in a 160kHz
bandwidth.
-64dBc for an 8dBmV carrier in a 160kHz
bandwidth.
TXEN=0
Minimum Gain
-55
-50
Transmit Disabled
-75
-70
TX EN Enable Time
0.5
1.0
Time for gain to reach 99% of final value.
See Note 1.
See Note 1.
Maximum Gain
Minimum Gain
Chip output impedance is nominally 300
.
Differential to single-ended output conver-
sion to 75
is performed in a balun with a
2:1 turns ratio, corresponding to a 4:1 imped-
ance ratio.
Differential
TX EN Transient Duration
Output Switching Transients
2.4
3.0
5
3
300
μ
S
10
5
345
mV
P-P
mV
P-P
Output Impedance
255
Input Impedance
Thermal
Theta
JC
75
28
°C/W
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