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AD637JRZ-R7 数据表(PDF) 13 Page - Analog Devices

部件名 AD637JRZ-R7
功能描述  High Precision, Wideband RMS-to-DC Converter
PDF  20 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD637JRZ-R7 数据表(HTML) 13 Page - Analog Devices

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AD637
Rev. K | Page 13 of 20
dB CALIBRATION
Refer to Figure 20:
• Set V
IN
= 1.00 V dc or 1.00 V rms
• Adjust R1 for 0 dB out = 0.00 V
• Set V
IN
= 0.1 V dc or 0.10 V rms
• Adjust R2 for dB out = −2.00 V
Any other dB reference can be used by setting VIN and R1
accordingly.
AD707JN
+VS
R2
5kΩ
33.2kΩ
R3
1kΩ*
BUFFER
AD637
SQUARER/DIVIDER
FILTER
25kΩ
25kΩ
1
2
3
4
5
6
7
14
13
12
11
10
9
8
CAV
–VS
+VS
+
BUFF
OUT
COMMON
OUTPUT
OFFSET
BUFF IN
NC
CS
DEN
INPUT
dB OUTPUT
VIN
NC
1µF
VOUT
+VS
AD508J
+2.5 V
R1
500kΩ
0dB ADJUST
10kΩ
4.7kΩ
+VS
–VS
+VS
SIGNAL
INPUT
dB SCALE
FACTOR
ADJUST
COMPENSATED
dB OUTPUT
+ 100mV/dB
–VS
60.4Ω
2
3
4
6
7
ABSOLUTE
VALUE
BIAS
SECTION
*1kΩ + 3500ppm
SEE TEXT
NC = NO CONNECT
Figure 20. dB Connection



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