ES278 Datasheet, PDF (24/25 Pages) Cyrustek corporation – 4000 Counts Manual DMM

ES27 8
4000 Counts Manual DMM
 Application Circuit
1. AVG Circuit
SW5
SW6
Temperature
Precision Resistors
6.8K ^{VR4 10K R22 56K ADP}
24K ^{VR3 10K R21 56K}
24K ^{VR2 10K R20 56K}
4.7uF
C15 4.7uF
4.7uF
SLEEP 43
42
DISDGBP 41
CESEL 40
BKOUT 39
ALARM 38
VST
Precision Resistors 37
36
900 35
9K 34
470nF 10% 33
32
TEST5 31
ADO 30
29
ACVH 28
ACVL 27
26
C16
R37
R36
C14
R35
C17
ADI
R39
R38
FREQ
2N2222 2N2222
2N2222 2N2222
2N2222 2N2222
2N2222 2N2222
2N3904
C21 220pF
Close to IC
C22 0-100pF
SGND
ACVL
ACVH
ADI
ADO
TEST5
CAP
CAN
R10K
R1K
NC
FREQ
ALARM
BKOUT
CESEL
DISDGBP
VST
SLEEP
ASEL
DIOV
BUZIN
BP4
BP3
BP2
BP1
IVS
ADP
NC
NC
AGND
AGND
DGND
V+
V+
V-
V-
LBAT9
CN
CP
SLACDC
FC1
FC2
FC3
FC4
FC5
FC6
BUZOUT
OSC2
NC
NC
100 IVS
99 ADP
98
97
96
95
94
93
92
91
90
89 LBAT9
88 470nF
87 C1
86 SLACDC
85 FC1
84 FC2
83 FC3
82 FC4
81 FC5
80 FC6
79 BUZOUT
78
77
76
ASEL 44
DIOV 45
BUZIN 46
BP4
47
BP3
48
BP2
49
BP1
50
+
V 1.5
24
2015/12/11