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[v1-03] 2015-Aug-10

AS3715 − Detailed Description – System Functions

10-Bit ADC

Description

This general purpose ADC can be used for measuring several

voltages and currents to perform functions like battery monitor,

temperature supervision, button press detection, etc.

Figure 73:

ADC Input Sources

ADC Input Sources: Shows the various inputs with the corresponding resolution which can be measured by the

internal ADC.

Source

Range

LSB

Mode

Description

BATTEMP

1.8V

1.76mV

1:1

Check battery charging

temperature

DIE temperature

1.8V

1.76mV

1:1

Tj = (0.866 * ADC10<9:0>) - 274

CHGIN2

5.5V

7.03mV

4:1

CURR1

1.0V

1.76mV

1:1

CURR2

1.0V

1.76mV

1:1

CURR3

1.0V

1.76mV

1:1

VUSB1

15V

26.4mV

15:1

Check USB charger HV input

CHGIN1

5.5V

7.03mV

4:1

Check USB charger LV input

VIBAT

5.5V

7.03mV

4:1

Check Li-Ion battery voltage

VSUP

5.5V

7.03mV

4:1

Check main system supply voltage

VEBAT

5.5V

7.03mV

4:1

Check 2nd Li-Ion battery voltage

GPIO3

1.8V / 5.5V

1.76 / 7.03mV

1:1 / 4:1

GPIO4

1.8V / 5.5V

1.76 / 7.03mV

1:1 / 4:1

GPIO7

1.8V / 5.5V

1.76 / 7.03mV

1:1 / 4:1

GPIO8

1.8V / 5.5V

1.76 / 7.03mV

1:1 / 4:1

FReserved

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