Ver 1.2
9
22/02/24
ES269
6000 Counts Intelligent Auto-Function DMM IC
Current Measurement
For multi-meter application
Connect CLAMPAPO pin to V- or AGND for multi-meter model. See to Table 13 for details. There are
2 automatic current measurement modes for multi-meter. The following table summarizes the full-scale
range of each mode. When ES269 operates in the current measurement modes for multi-meter, it takes
high input from pin Ain or mAin, low input from pin SGND.
Connecting DET_mA or DET_A pin to AGND to switch automatically to mA or A measurement,
respectively.
In scan mode, both mA/A can automatically detect DCA or ACA. Alternatively, it can switch manually
to DCA or ACA measurement by SELKEY.
In auto mode, ES269 can automatically switch to appropriate range for measurement.
In manual mode, user can switch range by Range key.
Table 4. milli-Ampere ranges for multi-meter
Mode
Full Scale
Input Terminal
Full scale
mAR1
60.00mA
mAin V.S. SGND
60.00mV
mAR2
600.0mA
mAin V.S. SGND
600.0mV
Table 5. Ampere ranges for multi-meter
Mode
Full Scale
Input Terminal
Full scale
AR1
6.000A
Ain V.S. SGND
60.00mV
AR2
20.00A
Ain V.S. SGND
200.0mV
Table 6. The sensitivity value in DC(m)A/AC(m)A auto detecting mode
Sensitivity
Test range
mA
6mA
6.00mA – 600.0mA
A
0.6A
0.600A – 20.00A
For clamp meter application
Leave the CLAMPAPO pin floating or connected it to V+ for clamp meter model. See to Table 13 for
details. The following table summarizes the full-scale range of each mode. It takes high input from Ain,
low input from SGND.
In scan mode, ES269 can automatically switch to AC current measurement when the signal level on the
Ain pin exceeds 6mV. Since V and A are detected, the voltage measurement will take precedence.
Table 7. Current range for clamp meter
Mode
Full Scale
Input Terminal
Full scale
AR1
60.00A
Ain V.S. SGND
60.00mV
AR2
600.0A
Ain V.S. SGND
600.0mV
