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ES51984 Datasheet(PDF) 3 Page - Cyrustek corporation

No. de pieza ES51984
Descripción Electrónicos  3 3/4 CAP AUTO DMM
Download  22 Pages
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Fabricante Electrónico  CYRUSTEK [Cyrustek corporation]
Página de inicio  http://www.cyrustek.com.tw
Logo CYRUSTEK - Cyrustek corporation

ES51984 Datasheet(HTML) 3 Page - Cyrustek corporation

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11/01/05
3
ES51984
3 3/4 CAP AUTO DMM
Pin Description
Pin No Symbol
Type
Description
1
NC
2
V+
P
Positive supply voltage, output of on-chip DC-DC converter.
3
V+
P
Positive supply voltage, output of on-chip DC-DC converter.
4
NC
5
CL+
IO
High resolution positive connection for reference capacitor.
6
CL-
IO
High resolution negative connection for reference capacitor.
7
CIL
O
High resolution integrator output. Connected to integral capacitor
8
CAZL
O
High resolution auto-zero capacitor connection.
9
BUFL
O
Integral resistor connection for high resolution buffer output
10
IVSH
I
High current measurement input.
11
IVSL
I
Low current measurement input
12
OVX
I
Input high voltage for resistance measurement
13
OVH
I
Output connection for resistance measurement
14
OVSG
I
Sense low voltage for resistance measurement
15
NC
16
OR1
O
Reference resistor connection for 399.9Ω range
17
VR5
O
Voltage measurement ÷10000 attenuator(4000V)
18
VR4
O
Voltage measurement ÷1000 attenuator(400.0V)
19
VR3
O
Voltage measurement ÷100 attenuator(40.00V)
20
VR2
O
Voltage measurement ÷10 attenuator(4.000V)
21
TEST 5
I/O
Test pin
22
ACVL
O
Negative output of AC to DC converter
23
ACVH
O
Positive output of AC to DC converter.
24
NC
25
ADI
I
Negative input of internal AC to DC Opamp.
26
NC
27
ADO
O
Output of internal AC to DC Opamp.
28
NC
29
VRH
O
Output of band-gap voltage reference .Typically –1.2V
30
VR
I
Reference input voltage connection. Typically –100mV
31
VA+
I
For ADP. Deintegrating voltage positive input. The input should
be higher than VA-.
32
VA-
For ADP. Deintegrating voltage negative input. The input should
be lower than VA+.
33
ADP
I
ADP input
34
SGND
G
Signal Ground
35
VR1
I
Measurement input
36
NC
37
VBAR
I
In capacitance mode, a compensation capacitance is connected
In temperature mode, it is used to control decimal point. See page
38
R9K
O
Connect to a 9KΩ resister for capacitor measurement.
39
R1K
O
Connect to a 1KΩ resister for capacitor measurement.
40
CA-
IO
Negative auto-zero capacitor connection for capacitor measurement
41
CA+
IO
Positive auto-zero capacitor connection for capacitor measurement
42
SLEEP
O
Asserts low in the sleep mode. See page 9, function description
43
FREQ
I
Frequency counter input, offset V-/2 internally by the chip.
44
NC
45
RS232
I
Pulse low to enable serial data output.
46
BKLIT
I
Back light function. Pulse low to set BKOUT pin output
47~50 SEG16~SEG13
O
LCD segment line 16~13


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