6000 Counts Smart DMM
Features
6000 counts LCD display
3V DC power supply
Conversion rate: 3 times/s (voltage mode)
Full automatic measurement:
*Voltage/Current: AC/DC auto scanning
& auto range: 6.000V~1000V
*Resistance/Diode/Capacitance(RDC scan)
(Taiwan
patent no.: 326361)
Auto scanning & auto range:
Resistance: 600.0Ω~6.000MΩ
Capacitance: 6.000nF~600.0uF
(Taiwan
patent no.: 323347,453443)
Push functions
Function selection by single key
Range change function
Hold function
MAX/MIN function
VAHZ function
DCA Zero function
Back light function
Support non-contact voltage detection
High voltage (> 30V) indication of LCD
display for voltage measurement
Built-in HCF(high crest factor detection)
function in AC mode
(Taiwan
patent no.: 234661)
OL level selection (600V/1000V/1500V)
Band-gap reference voltage output
Auto power off (3min. or 10min.) &
re-power on
Sleep output indication
On-chip buzzer driver
Low battery detection
ES51929 is an integrated ADC with 6000 counts
LCD display driver. It could support fully
automatic DMM function measurement. In
voltage or current mode, the AC or DC signals
auto scanning. In R/D/C (passive component)
mode,
resistance
(including
continuity),
capacitance or diode measurements are allowed
by fully automatic detection. A single key and
simple switch could select all measurements.
Expensive and bulky mechanical range switches
are not required. A non-contact electric field
detector (EF mode) is built-in for ac voltage
measurement
also.
The
ES51929
support
Clamp-on DCA Zero mode. Other features
including range control, data hold, max/min hold,
VAHz and back light function are available. For
power saving, an auto power off & re-power on
scheme are built-in. A sleep output is the
indication of entering auto power off mode.
ES51929
Application
Smart digital multi-meter
Smart clamp meter
General description
Ver 1.2
1
12/09/07
6000 Counts Smart DMM
Pin Assignment
ES51929
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
SEG12
SEG13
SEG14
SEG15
CLAMP
VON
AON
FA
FUA
FC3
FC2
FC1
HOLD
SEL
VAHz
RANGE
MAX/MIN
BKLIT
EFEN
BP1
BP2
BP3
BP4
ANNUNC
BKOUT
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
Pin Description
Pin No
1
2
Symbol
AGND
LBAT
3
4
5
6
7
8
9
10
11
Ver 1.2
CREF+
CREF-
CINT
CAZ
BUFF
RAZ
IVSH
IVSL
OVX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
AGND
LBAT
CREF+
CREF-
CINT
CAZ
BUFF
RAZ
IVSH
IVSL
OVX
OVH
OVSG
OR1
VR5
VR4
VR3
VR2
TEST5
ACVL
ACVH
ADI
ADO
OHMC4
OHMC3
SE
G11
SE
G10
NC
NC
V_EN
SE
G09
SE
G08
SE
G07
SE
G06
SE
G05
SE
G04
SE
G03
SE
G02
SE
G01
OS
C2
OS
C1
BK
SEL
CE
SEL
C+
C-
V-
V-
V+
V+
DG
ND
AG
ND
ES51929
ZE
RO
nF_
OPT
NC
NC
NC
AC
EN
BU T
ZOU
APOSEL
BU
ZIN
SL
EEP
R1
K
R9
K
CA
+
CA
-
NC
VR
1
VA
-
VA
+
AD
P
SG
ND
VR
VR
H
PW L
RSE
OH
MC1
OH
MC2
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
Type
P
I
I/O
I/O
O
I
O
O
I
I
I
Analog ground.
Low battery configuration. If 3V battery is used, connect it to DGND.
The default low-battery threshold voltage is –2.3V. If 9V battery is
used, the low battery enunciator is displayed when the voltage of
this pin is less than VRH (-1.2V)
Positive connection for reference capacitor.
Negative connection for reference capacitor.
Integrator output. Connect to integral capacitor
Auto-zero capacitor connection.
Buffer output pin. Connect to integral resistor
Buffer output pin in high-speed mode. Connect to high-speed integral
resistor.
High current measurement input.
Low current measurement input
Input high voltage for resistance/capacitor measurement
2
12/09/07
Description
6000 Counts Smart DMM
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46 – 48
49
50
51
52
OVH
OVSG
OR1
VR5
VR4
VR3
VR2
TEST5
ACVL
ACVH
ADI
ADO
OHMC4
OHMC3
OHMC2
OHMC1
PWRSEL
VRH
VR
SGND
ADP
VA+
VA-
VR1
NC
CA-
CA+
R9K
R1K
SLEEP
BUZIN
APOSEL
BUZOUT
ACEN
NC
nF_OPT
ZERO
BKOUT
ANNUNC
I
I
O
O
O
O
O
I/O
I
I
I
O
O
O
O
O
I
O
I
I
I
I
I
I
-
I/O
I/O
O
O
O
I
I
O
O
-
I
I
O
O
Output connection for resistance/capacitor measurement
Sense low voltage for resistance measurement
Reference resistor connection for 600.0Ω
range
Voltage measurement ÷10000 attenuated (1000V)
Voltage measurement ÷1000 attenuated (600.0V)
Voltage measurement ÷100 attenuated (60.00V)
Voltage measurement ÷10 attenuated (6.000V)
Test pin
DC signal low input in ACV/ACA mode. Connect to negative output of
external AC to DC converter.
DC signal high input in ACV/ACA mode. Connect to positive output of
external AC to DC converter.
Negative input of internal AC to DC OP Amp.
Output of internal AC to DC OP Amp.
Filter capacitor connection for resistance mode
Filter capacitor connection for resistance mode
Filter capacitor connection for resistance mode
Filter capacitor connection for resistance mode
Pulled to V- to disable the power function of SEL key
Output of band-gap voltage reference. Typically –1.2V
Reference input voltage connection. Typically –400mV
Signal Ground.
Measurement input in ADP mode
For ADP mode. De-integrating voltage positive input. The input should
be higher than VA-.
For ADP mode. De-integrating voltage negative input. The input should b
lower than VA+.
Measurement input.
Not connected
Negative auto-zero capacitor connection for capacitor measurement
Positive auto-zero capacitor connection for capacitor measurement
Connect to a precise 9KΩ resister for capacitor measurement.
Connect to a precise 1KΩ resister for capacitor measurement.
Sleep mode indicator, asserts low in SLEEP mode. Normal V+ output.
Pull to V- to enable the BUZOUT.
Auto power off idle time selection.
Outputs a 2KHz audio frequency signal for driving piezoelectric buzzer
Output to V- when AC mode inactive and output to V+ in AC mode.
Not connected
Pulled to V- to enable the residual capacitance reduction mode
Pulse to V- to enable DCA ZERO function.
If BKLIT function is enabled, this pin will change from –3V to +3V
for 60 sec, once press BKLIT pin again within 60 sec, this pin will change
back to –3V.
Square wave output at the backplane frequency, synchronized to BP1.
ANNUNC can be used to control display annunciator. Connect a LCD
segment to ANNUNC to turn it on; connect an LCD segment to its back
plane to turn it off.
LCD backplane 4
LCD backplane 3
LCD backplane 2
LCD backplane 1
Pull-low to enable non-contact AC voltage detection
Back light function. Pulse low to set BKOUT pin output.
Pulse to V- to enable MAX/MIN function.
Pulse to V- to enable manual mode and manual range selection.
3
12/09/07
ES51929
53
54
55
56
57
58
59
60
Ver 1.2
BP4
BP3
BP2
BP1
EFEN
BKLIT
MAX/MIN
RANGE
O
O
O
O
I
I
I
I
6000 Counts Smart DMM
61
62
63
64
65
66
67
68
69
70
71
72 – 77
78
79
80 – 88
89
90
91
92
93
94
95
96
97
98
99
100
VAHz
SEL
HOLD
FC1
FC2
FC3
FUA
FA
AON
VON
CLAMP
SEG15 – 10
NC
NCV_EN
SEG09 - 01
OSC2
OSC1
BKSEL
CESEL
C+
C-
V-
V-
V+
V+
DGND
AGND
I
I
I
I
I
I
I
I
I
I
I
O
-
I
O
I
O
I
I
O
O
P
P
P/O
P/O
G
G
Pulse to V- to enable VAHz mode.
Pulse to V- to select target measurement
Pulse to V- to enable HOLD function.
Switch 1 for function selection.
Switch 2 for function selection.
Switch 3 for function selection.
Switch 1 for current measurement selection.
Switch 2 for current measurement selection.
Pull to high to sense current measurement priority in auto scan mode
Pull to high to sense voltage measurement priority in auto scan mode
Switch for clamp meter application function
LCD segment line 10 – 15
Not connected
Individual EF function selection
LCD segment line 01 – 09
Crystal oscillator input connection
Crystal oscillator output connection
When pulled to V-, an auto back light configuration is allowed.
Configure a low level applied to BKLIT larger than 1 second, the
BKOUT will be active.
If BKLIT is back to high level, the BKOUT would be inactive.
OL selection feature control pin.
Positive capacitor connection for on-chip DC-DC converter.
Negative capacitor connection for on-chip DC-DC converter.
Negative supply voltage. Connecting to battery negative terminal.
Negative supply voltage. Connecting to battery negative terminal.
Output of on-chip DC-DC converter.
Output of on-chip DC-DC converter.
Digital ground.
Analog ground.
ES51929
Absolute Maximum Ratings
Characteristic
Supply Voltage (V- to AGND)
Analog Input Voltage
V+
AGND/DGND
Digital Input
Power Dissipation. Flat Package
Operating Temperature
Storage Temperature
-4V
V- -0.6 to V+ +0.6
V+
≥
(AGND/DGND+0.5V)
AGND/DGND
≥
(V- -0.5V)
V- -0.6 to DGND +0.6
500mW
0℃ to 70℃
-25℃ to 125℃
Rating
Ver 1.2
4
12/09/07
6000 Counts Smart DMM
Electrical Characteristics
TA=25℃, V- = -3V
Parameter
Power supply
Operating supply current
In Scan AC/DC mode
Voltage roll-over error
Voltage nonlinearity
Input Leakage
Low battery flag voltage
Zero input reading
Peak to peak backplane
drive voltage
Counter time base period
Reference voltage and open circuit
voltage for 600Ω measurement
Open circuit voltage for
Ω
measurement (except 600Ω)
Internal pull-high to 0V
current
AC frequency response at 6.000V
Range
AC input response for scan mode
AC/DC voltage scan mode
sensitivity@1kHz
AC/DC current scan mode
sensitivity@1kHz
RDC scan mode RES sensitivity
Symbol
Test Condition
V-
I
DD
Normal operation
I
SS
In sleep mode
REV
10MΩ input resistor
Best case straight
NLV line
V- to AGND
10MΩ input resistor
-3.5V
≤
V
≤
-2.2V
f
OSC
= 4MHZ
100KΩ resistor
between VRH and
AGND
Ω
and Continuity
Mode
Between V- pin and
HOLD, RANGE,
SEL,FC1-3,FUA,
FA, VON, AON,
CLAMP, BKLIT,
MAXMIN
±1%
±5%
VR1(10MΩ input
impedance)
ADP, IVSL and IVSH
Parasitic capacitance
allowed in 6.000MΩ
range
Forward voltage
Min.
-3.5
—
—
—
—
-10
-2.4
-000
3.0
—
-1.33
-0.86
Typ.
-3.0
2.5
0.6
—
—
1
-2.3
000
3.15
1
-1.23
-0.78
Max
-2.5
—
2.5
±0.1
±0.1
10
-2.2
+000
3.3
—
-1.13
-0.70
Units
V
mA
µA
%F.S
1
%F.S
PA
V
counts
V
sec
V
V
ES51929
V
REF
—
1.2
—
µA
—
—
10
300
8
—
40-400
—
400-2000
—
—
50000
450
10
—
0.8
—
50
—
—
—
—
600
12
200
HZ
Hz
mV
mV
pF
V
pF
ppm/℃
%F.S
counts
%F.S
counts
RDC scan mode DIODE sensitivity
RDC scan mode CAP sensitivity
Reference voltage temperature
100KΩ
resister
coefficient
VRH
TC
RF
Between
0℃<TA<70℃
Capacitance measurement
accuracy
6nF – 6.0µF
60µF ~ 60mF
400
—
-1.5
-5
-2.0
-5
—
—
1.5
5
2.0
5
Note
:
1.Full Scale
Ver 1.2
5
12/09/07
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