ADT7410 查看數據表（PDF） - Analog Devices

零件编号

产品描述 (功能)

生产厂家

ADT7410

±0.5°C Accurate, 16-Bit Digital I²C Temperature Sensor

Analog Devices 

ADT7410

ONE-SHOT MODE

Setting Bit 5 to 1 and Bit 6 to 0 of the configuration register

(Register Address 0x03) enables the one-shot mode. When

this mode is enabled, the ADT7410 immediately completes a

conversion and then goes into shutdown mode.

Wait for a minimum of 240 ms after writing to the one-shot

bits before reading back the temperature from the temperature

value register. This time ensures that the ADT7410 has time to

power up and complete a conversion.

The one-shot mode is useful when one of the circuit design

priorities is to reduce power consumption.

1 SPS MODE

In this mode, the part performs one measurement per second.

A conversion takes only 60 ms, and it remains in the idle state

for the remaining 940 ms period. This mode is enabled by

writing 0 to Bit 5 and 1 to Bit 6 of the configuration register

(Register Address 0x03).

CT and INT Operation in One-Shot Mode

See Figure 13 for more information on one-shot CT pin

operation for TCRIT overtemperature events when one of the

limits is exceeded. Note that in interrupt mode, a read from

any register resets the INT and CT pins.

For the INT pin in the comparator mode, if the temperature

drops below the THIGH – THYST value or goes above the TLOW +

THYST value, a write to the one-shot bits (Bit 5 and Bit 6 of the

configuration register, Register Address 0x03) resets the INT pin.

For the CT pin in the comparator mode, if the temperature

drops below the TCRIT – THYST value, a write to the one-shot

bits (Bit 5 and Bit 6 of the configuration register, Register

Address 0x03) resets the CT pin. See Figure 13.

Note that when using one-shot mode, ensure that the refresh

rate is appropriate to the application being used.

TEMPERATURE

149°C

148°C

147°C

146°C

145°C

144°C

143°C

142°C

141°C

140°C

CT PIN

POLARITY = ACTIVE LOW

TCRIT

TCRIT – THYST

CT PIN

POLARITY = ACTIVE HIGH

TIME

WRITE TO

BIT 5 AND BIT 6 OF

CONFIGURATION

REGISTER.*

WRITE TO

BIT 5 AND BIT 6 OF

CONFIGURATION

REGISTER.*

WRITE TO

BIT 5 AND BIT 6 OF

CONFIGURATION

REGISTER.*

*THERE IS A 240ms DELAY BETWEEN WRITING TO THE CONFIGURATION REGISTER TO START

A STANDARD ONE-SHOT CONVERSION AND THE CT PIN GOING ACTIVE. THIS IS DUE TO THE

CONVERSION TIME. THE DELAY IS 60ms IN THE CASE OF A 1 SPS CONVERSION.

Figure 13. One-Shot CT Pin

Rev. 0 | Page 10 of 24

Share Link: