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AD737JRZ-5-R7 Datasheet(PDF) 9 Page - Analog Devices

Part No. AD737JRZ-5-R7
Description  Low Cost, Low Power, True RMS-to-DC Converter
Download  24 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD737JRZ-5-R7 Datasheet(HTML) 9 Page - Analog Devices

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Data Sheet
AD737
Rev. I | Page 9 of 24
VIN = 200mV rms
CAV = 100µF
CF = 22µF
–0.8
–0.6
–0.2
–0.4
0
0.4
0.2
0.6
0.8
–60
–20
–40
20
0
60
80
100
120
40
140
TEMPERATURE (°C)
Figure 10. Additional Error vs. Temperature
0
200
100
400
300
500
0
0.2
0.4
0.6
0.8
1.0
RMS INPUT LEVEL (V)
Figure 11. DC Supply Current vs. RMS Input Level
10µV
100µV
1mV
10mV
100
1k
10k
100k
–3dB FREQUENCY (Hz)
AC-COUPLED
Figure 12. RMS Input Level vs. –3 dB Frequency; Negative DC Output
–2.5
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
10mV
100mV
1V
2V
INPUT LEVEL (rms)
CAV = 22µF, CC = 47µF,
CF = 4.7µF
Figure 13. Error vs. RMS Input Level Using Circuit in Figure 29
1
10
100
10
100
1k
FREQUENCY (Hz)
–1%
–0.5%
VIN = 200mV rms
CC = 47µF
CF = 47µF
Figure 14. Value of Averaging Capacitor vs. Frequency
for Specified Averaging Error
1mV
10mV
100mV
1V
1
10
100
1k
FREQUENCY (Hz)
AC-COUPLED
CAV = 10µF, CC = 47µF,
CF = 47µF
–0.5%
–1%
Figure 15. RMS Input Level vs. Frequency for Specified Averaging Error


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