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參數(shù)資料
| 型號(hào)： | LT5528 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 400MHz to 3.7GHz High Signal Level Downconverting Mixer |
| 中文描述： | 400MHz至3.7GHz高信號(hào)電平下變頻混頻器 |
| 文件頁(yè)數(shù)： | 14/16頁(yè) |
| 文件大?。?/td> | 221K |
| 代理商： | LT5528 |
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14
LT5527
5527f
APPLICATIU
through matching inductors in a band-pass IF matching
network. The values of L1, L2 and C3 are calculated to
resonate at the desired IF frequency with a quality factor
that satisfies the required IF bandwidth. The L and C
values are then adjusted to account for the mixer’s
internal 2.5pF capacitance and the SAW filter’s input
capacitance. In this case, the differential IF output imped-
ance is 400
since the bandpass network does not
transform the impedance.
Additional matching elements may be required if the SAW
filter’s input impedance is less than or greater than 400
.
Contact the factory for application assistance.
W
U
U
IF
AMP
SAW
FILTER
L1
IF
+
IF
–
L2
C3
SUPPLY
DECOUPLING
V
CC
5527 F14
Figure 14. Bandpass IF Matching for Differential IF Architectures
Standard Evaluation Board Layout
Discrete IF Evaluation Board Layout
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