Datasheet > ADT7422

ADT7422

更新时间： 2023-12-20 18:46:03

品牌	Logo	应用领域
亚德诺 - ADI		温度传感传感器温度传感器
页数	文件大小	规格书
23页	411K
描述
适用于 VSM 应用的精度为 ±0.1°C 的 16 位数字 I2C?温度传感器

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数据手册

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ADT7422 数据手册

ADT7422

Data Sheet

INT AND CT OUTPUTS

The INT pin and CT pin are open-drain outputs, and both

require a 10 kΩ pull-up resistor to V_DD. The ADT7422 must be

fully powered up to V_DDbefore reading the INT and CT data.

Comparator Mode

In comparator mode, the INT pin returns to inactive status

when the temperature drops below the T_HIGH− T_HYSTlimit or

rises above the T_LOW+ T_HYSTlimit.

UNDERTEMPERATURE AND OVERTEMPERATURE

DETECTION

Placing the ADT7422 in shutdown mode does not reset the

INT state in comparator mode.

The INT pin and CT pin have two undertemperature/overtemper-

ature 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 T_HIGHsetpoint register or less than

the temperature stored in the T_LOWsetpoint register. How the

INT pin reacts after this event depends on the overtemperature

mode selected.

Interrupt Mode

In interrupt mode, the INT pin goes inactive when any ADT7422

again when the temperature is either greater than the temperature

stored in the T_HIGHsetpoint register, or less than the

temperature stored in the T_LOWsetpoint register.

Placing the ADT7422 in shutdown mode resets the INT pin in

interrupt mode.

Figure 20 shows the comparator and interrupt modes for events

exceeding the T_HIGHlimit with both pin polarity settings. Figure 21

shows the comparator and interrupt modes for events

exceeding the T_LOWlimit with both pin polarity settings.

TEMPERATURE

82°C

81°C

80°C

79°C

78°C

77°C

76°C

75°C

74°C

73°C

T_HIGH

T_HIGH– T_HYST

INT PIN

(COMPARATOR MODE)

POLARITY = ACTIVE LOW

INT PIN

(INTERRUPT MODE)

POLARITY = ACTIVE LOW

INT PIN

(COMPARATOR MODE)

POLARITY = ACTIVE HIGH

INT PIN

(INTERRUPT MODE)

POLARITY = ACTIVE HIGH

TIME

READ

Figure 20. INT Output Temperature Response Diagram for T_HIGHOvertemperature Events

Rev. A | Page 20 of 23

1...17 18 192021 22 23

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