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ES51999 Datasheet(PDF) 13 Page - Cyrustek corporation

Part No. ES51999
Description  4 3/4 and 5 3/4 A/D AUTO
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Maker  CYRUSTEK [Cyrustek corporation]
Homepage  http://www.cyrustek.com.tw
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ES51999 Datasheet(HTML) 13 Page - Cyrustek corporation

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07/07/06
13
ES51999
4 3/4 and 5 3/4 A/D AUTO
The measurement of true RMS using ES636
If ES636 is used for true RMS measurement, the suggested application circuit is shown
in Figure 4.2. When ES636 is used for true RMS, ADO and ADI pin short together,
TEST5 pin keeps floating, and ACVL pin connects to SGND. And the OVSG pin short
to AGND through a switch.
Figure 4.2 AC-to-DC circuit using ES636
(5) Diode Measurement
Diode measurement mode shares the same configuration with 4.4000V
voltage mode. The range select bits Q0, Q1 and Q2 are not active in this
mode.
(6) Current measurement
Current measurement has three mode. The following table summarizes the full scale
range of each mode.
Mode
Range Selection
Full scale
uA
IVSL/IVSH
440.00uA/4400.0uA
mA
IVSL/IVSH
44.000mA/440.00mA
10A
IVSH
44.000A
*Operation Mode is based on application circuit .
*Range selection : IVSL ( Q0,Q1,Q2 ) = ( 0,0,0 )
IVSH ( Q0,Q1,Q2 ) = ( 0,0,1 )
1
2
3
4
5
6
7
14
13
12
11
10
8
9
+Vs
-Vs
150
470K
500K
+Vs
Cav
-Vs
ADI
ADO
ACVH
ACVL
100
1K
10K
101K
1.11M
OVSG
OR1
VR5
VR4
VR3
VR2
200
+Vs
-Vs
Connect Pin 2 to –Vs for normal operation,
or connect it to +Vs for sleep mode
ACV


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