AS3722 datasheet(76/199 Pages) AMSOSRAM

76 / 199 page

ams Datasheet

Page 75

[v1-01] 2015-Sep-07

Document Feedback

AS3722 − Detailed Descriptions- System Functions

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

internal ADC.

The ADC-10 features 2 control register for measuring 2 different

sources. By writing to the control register of channel 0 or

channel 1 the selected measurement will be performed and the

result placed in the corresponding result register. ADC10 has

only one conversion unit, meaning measurements for source 1

and source 2 will be done time multiplexed.

ADC channel 1 is capable to perform automatic conversion in

0.5s or 1s intervals of the selected source. In addition a free

programmable threshold with hysteresis

(ADC1_threshold_lo/hi) can be set to generate interrupts once

the threshold is passed.

adc1_interrupt_mode defines if an interrupt is generated on

every threshold passing or only if the measured value rises

above the high threshold or fall below the low threshold. The

ADC interrupt can be masked as every other interrupt.

By setting adc_buf_on the buffered 1.6V ADC reference is

available on GPIO7 during the conversion time. To give the ADC

reference output enough time to settle the pre-sample time

gets stretched from 32us to 62us. The gpio7_mode should be

set to “3” (tristate) gpio7_iosf should be set to “0” (normal).

TEMP_SD1

1.56mV

Tj = 326.5 - ADC10<9:0> * 0.3734

TEMP1_SD6

1.56mV

Tj = 326.5 - ADC10<9:0> * 0.3734

TEMP2_SD6

1.56mV

Tj = 326.5 - ADC10<9:0> * 0.3734

Source

Range

LSB

Mode

Description

AS3722 Datasheet(PDF) 76 Page - ams-OSRAM AG