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