Ver 1.5

17/03/29

18

ES166

LCR/DMM analog front

Duty cycle mode range (Input sensitivity > 5Vpp @ duty cycle= 5.0% or 95.0%)

Freq. range

Duty range

60.00Hz

600.0Hz

5.0% - 95.0%

6.000KHz

10.0% - 90.0%

60.00KHz

20.0% – 80.0%

2.7 ADP mode

MCU send write command to select the ADP1 or ADP2 mode measurement function.

The Hz mode measurement is available to be enabled with the ADP1 AC function (set

AC bit to 1) simultaneously. The measured signal is applied to ADP1in terminal (pin5).

The signal full scale is 600mV for DC mode and 600mVrms for AC mode.

See the next table of function command:

F3

F2

F1

F0

AC

Measurement mode

Read data bytes

0

1

1

1

0

ADP1 DC mode

D0(12-00)

0

1

1

1

1

ADP1 AC mode

D0(12-00), D2(19-00), D3(19-00)

1

0

0

0

0

ADP2 DC mode

D0(12-00)

1

0

0

0

1

ADP2 AC mode

D0(12-00)

Note1: D0/D1/D2 all are binary format. SIGN is the sign bit of D0.

Frequency range control for ADP1/Hz mode

FQ2 FQ1 FQ0

Full Scale Range

0

0

0

N/A

0

0

1

600.0Hz

0

1

0

6.000kHz

0

1

1

60.00kHz

Note: See frequency mode (section 2.6) also. If AC value is less than 1% full scale, the Hz count

should be set to zero by MCU directly.

MCU could control the IOP1 to reconfigure the full scale of ADC in ADP modes:

IOP1

ADC full scale in ADP mode

0

600.0mV

1

60.00mV