ADT7320UCPZ-R2 datasheet(21/24 Pages) AD

21 / 24 page

Preliminary Technical Data

ADT7320

Rev. PrA | Page 21 of 24

INT AND CT OUTPUTS

The INT and CT pins are open drain outputs, and both pins

require a 10 kΩ pull-up resistor to VDD.

UNDERTEMPERATURE AND OVERTEMPERATURE

DETECTION

The INT and CT pins have two undertemperature/overtemperature

modes: comparator mode and interrupt mode. The interrupt

mode is the default power-up overtemperature mode. The INT

output pin becomes active when the temperature is greater than

the temperature stored in the THIGH setpoint register or less than

the temperature stored in the TLOW setpoint register. How this

pin reacts after this event depends on the overtemperature

mode selected.

Figure 20 illustrates the comparator and interrupt modes for

events exceeding the THIGH limit with both pin polarity settings.

Figure 21 illustrates the comparator and interrupt modes for

events exceeding the TLOW limit with both pin polarity settings.

Comparator Mode

In comparator mode, the INT pin returns to its inactive status

when the temperature drops below the THIGH − THYST limit or

rises above the TLOW + THYST limit.

Putting the ADT7320 into shutdown mode does not reset the

INT state in comparator mode.

Interrupt Mode

In interrupt mode, the INT pin goes inactive when any ADT7320

only when the temperature is greater than the temperature stored

in the THIGH setpoint register or less than the temperature stored

in the TLOW setpoint register.

Placing the ADT7320 into shutdown mode resets the INT pin

in interrupt mode.

TEMPERATURE

82°C

81°C

80°C

79°C

78°C

77°C

76°C

75°C

74°C

73°C

INT PIN

(COMPARATOR MODE)

POLARITY = ACTIVE LOW

INT PIN

(INTERRUPT MODE)

POLARITY = ACTIVE LOW

INT PIN

(INTERRUPT MODE)

POLARITY = ACTIVE HIGH

INT PIN

(COMPARATOR MODE)

POLARITY = ACTIVE HIGH

THIGH

THIGH –THYST

TIME

READ

Figure 20. INT Output Temperature Response Diagram for THIGH Overtemperature Events

ADT7320UCPZ-R2 データシート(PDF) 21 Page - Analog Devices

ADT7320UCPZ-R2 データシート(HTML) 21 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

データシートダウンロード

リンク URL

ADT7320UCPZ-R2 データシート(PDF) 21 Page - Analog Devices

ADT7320UCPZ-R2 データシート(HTML) 21 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

データシート ダウンロード

リンク URL

データシートダウンロード