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ADA8282WBCPZ-R7 データシート(PDF) 14 Page - Analog Devices

部品番号 ADA8282WBCPZ-R7
部品情報  Radar Receive Path AFE - 4-Channel LNA and PGA
PDF  21 Pages
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

ADA8282WBCPZ-R7 データシート(HTML) 14 Page - Analog Devices

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ADA8282
Data Sheet
Rev. 0 | Page 14 of 21
APPLICATIONS INFORMATION
INCREASED GAIN USING TWO ADA8282 DEVICES
IN SERIES
For applications that require gains greater than 36 dB, two
ADA8282 devices can be used in series with each other. To
optimize the signal swing for the path, increment the gains
according to Table 11.
Table 11. Gain Settings for Two Devices in Series
Total Gain (dB)
A1 (Input Side
ADA8282) Gain (dB)
A2 (Output Side
ADA8282) Gain (dB)
36
18
18
42
18
24
48
24
24
54
30
24
60
30
30
66
36
30
72
36
36
24
+OUTA
23
–OUTA
22
+OUTB
21
–OUTB
20
+OUTC
19
–OUTC
18
+OUTD
17
–OUTD
1
2
3
4
5
6
7
8
+INA
–INA
+INB
–INB
+INC
–INC
+IND
–IND
ADA8282
EPAD TIED
TO GROUND
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
+3.3V
+3.3V
+3.3V
GPIO: +3.3V/0V
+3.3V
10kΩ
SPI BUS
24
+OUTA
23
–OUTA
22
+OUTB
21
–OUTB
20
+OUTC
19
–OUTC
18
+OUTD
17
–OUTD
1
2
3
4
5
6
7
8
+INA
–INA
+INB
–INB
+INC
–INC
+IND
–IND
ADA8282
EPAD TIED
TO GROUND
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
INPUT A
SOURCE
INPUT B
SOURCE
INPUT C
SOURCE
INPUT D
SOURCE
0.1µF
0.1µF
0.1µF
0.1µF
+3.3V
+3.3V
+3.3V
GPIO: +3.3V/0V
+3.3V
10kΩ
SPI BUS
TO ADC
TO ADC
TO ADC
TO ADC
Figure 28. Using Two ADA8282 Devices in Series to Increase Gain



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