ES51921
22,000 Counts Auto DMM
Open circuit voltage for
Ω
measurement (except 220Ω)
Internal pull-low to V-
current
AC frequency response at 2.2000V
range
3dB frequency for LPF mode
Reference voltage temperature
coefficient
Ω
and Continuity
Mode
Between GND Pin
and SLACDC
±1%
±5%
3
rd
order LPF
100KΩ resister
Between VRH
0℃<TA<70℃
22nF – 220nF
Capacitance measurement accuracy
2
2.2µF
22µF~220mF
-0.58
-0.53
1.5
—
—
800
—
-1.0
-10
-1.0
-10
-2.0
20
40-400
—
400-2000
—
1000
1200
75
—
—
—
—
—
1.0
10
1.0
10
2.0
20
-0.48
V
µA
HZ
Hz
ppm/℃
%
counts
%
counts
%
counts
TC
RF
Note
:
1.Full Scale
2.Above specification from 22nF to 2.2uF ranges are specified under REL mode. The
reading is calibrated to zero by relative function, when input is floating.
Function Description
1.
Operating Modes
1.1 Voltage Measurement
A re-configurable voltage divider automatically provides a suitable range in voltage
measurement mode. The following table summarizes the full-scale ranges in each
configuration.
Configuration Full Scale Range Divider Ratio Resistor Connection
VR1
220.00mV
1
1
-
VR2
2.2000V
1/10
R2 / (R1+R2)
VR3
22.000V
1/100
R3 / (R1+R3)
2
VR4
220.00V
1/1000
R4 / (R1+R4)
VR5
2200.0V
1/10000
R5 / (R1+R5)
Note:
1.
2.
220.00mV range is independent and manual mode. The input pin is different from other voltage
ranges.
If VST is set to V- level, the auto range mode will start from 220.00V range. 2.2000V – 22.000V
ranges only exist in manual mode.
Input Pin
V220m V.S. SGND
VR1 V.S. SGND
VR1 V.S. SGND
VR1 V.S. SGND
VR1 V.S. SGND
Ver. 3.2
6
10/06/23
CYRUSTEK [ Cyrustek corporation ]
