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參數(shù)資料
| 型號(hào)： | RF9936 |
| 英文描述： | RF Mixer |
| 中文描述： | RF混頻器 |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 243K |
| 代理商： | RF9936 |
8-126
RF9936
Rev A8 000822
8
F
NOT FOR NEWDESIGNS
SeeUpgradedProductRF9986
Application S chematic
1
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GAIN
ADJUST
SEL.
LOGIC
LNA SEL
V
CC
68 pF
RF2 IN
68 pF
RF1 IN
LO BUFF EN
(On:
≥
3.1v, Off:
≤
0.5V)
LO IN
V
CC
GC
(Min Gain:
≥
3.1V, Max Gain:
≤
0.5V)
68 pF
2.7 nH
1.8 pF
RF Image
Filter, 50
68 pF
V
CC
C2
C2
Filter
IF-
IF+
1 nF
C1
L1
68 pF
1 nF
C1
L1V
CC
LO BUFF OUT
Z
FILTER
= 1 k
Z
OUT
= 1 k
Measurement
Reference Plane
L1 and C2 serve dual purposes. L1 serves as an output bias choke, and C2 serves as a
series DC block. In addition, the values of L1 and C2 may be chosen to form an
impedance matching network if the IF filter's input impedance is not 100
. Otherwise,
the values of L1 and C1 are chosen to form a parallel-resonant tank circuit at the IF
when the IF filter's input impedance is 100
.
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