參數(shù)資料
型號(hào): AD831
廠商: Analog Devices, Inc.
英文描述: Low Distortion Mixer
中文描述: 低失真混頻器
文件頁數(shù): 12/16頁
文件大?。?/td> 225K
代理商: AD831
AD831
REV. B
–12–
Connections Quadrature Demodulation
T wo AD831 mixers may have their RF inputs connected in par-
allel and have their LO inputs driven in phase quadrature (Fig-
ure 27) to provide demodulated in-phase (I) and quadrature
(Q) outputs. T he mixers’ inputs may be connected in parallel
and a single termination resistor used if the mixers are located in
close proximity on the PC board.
DEMODULATED
QUADRATURE
OUTPUT
NC
–5V
0.1μF
0.1μF
+5V
51.1
0.1μF
+5V
–5V
0.1μF
–5V
0.1μF
IF
INPUT
C
F
C
F
0.1μF
+5V
IFN
VP
IFP
50
AP
GND
VN
RFP
RFN
VN
VP
9
LON
LOP
VP
12
GND
13
BIAS
VN
AD831
Top View
50
6
7
8
4
5
10
11
AN
VFB
COM
OUT
14
15
16
17
18
1
2
3
19
20
LO INPUT
AT 90
°
–10 dBm
DEMODULATED
IN-PHASE
OUTPUT
NC
–5V
0.1μF
0.1μF
+5V
51.1
0.1μF
+5V
–5V
0.1μF
–5V
0.1μF
C
F
C
F
0.1μF
+5V
LO INPUT
AT 0
°
–10 dBm
51.1
IFN
VP
IFP
50
AP
GND
VN
RFP
RFN
VN
VP
9
LON
LOP
VP
12
GND
13
BIAS
VN
AD831
Top View
50
6
7
8
4
5
10
11
AN
VFB
COM
OUT
14
15
16
17
18
1
2
3
19
20
Figure 27. Connections for Quadrature Demodulation
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