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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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ADT7422 数据手册

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Data Sheet  
ADT7422  
SPECIFICATIONS  
TA = −40°C to +125°C, VDD = 2.7 V to 3.3 V, unless otherwise noted.  
Table 1.  
Parameter  
Symbol Min  
Typ  
Max  
Unit Test Conditions/Comments  
TEMPERATURE SENSOR AND ADC  
Accuracy1  
0.12  
0.25  
0.50  
°C  
°C  
°C  
TA = 25°C to 50°C, VDD = 3.0 V  
TA = −20°C to +105°C, VDD = 2.7 V to 3.3 V  
TA = −40°C to +125°C, VDD = 2.7 V to 3.3 V  
ADC Resolution  
13  
16  
Bits  
Twos complement temperature value of  
the sign bit plus 12 ADC bits  
Twos complement temperature value of  
the sign bit plus 15 ADC bit  
Bits  
Temperature Resolution  
13-Bit  
16-Bit  
0.0625  
0.0078125  
240  
°C  
°C  
ms  
13-bit resolution (sign + 12 bits)  
16-bit resolution (sign + 15 bits)  
Continuous conversion and one-shot  
conversion modes  
Temperature Conversion Time  
Fast Temperature Conversion Time  
1 SPS Mode Conversion Time  
Temperature Hysteresis3  
Repeatability  
6
60  
0.002  
0.015  
0.0073  
0.1  
ms  
ms  
°C  
°C  
°C  
First conversion on power-up only  
Conversion time for 1 SPS mode  
Temperature cycle = 25°C to 125°C to 25°C  
TA = 25°C, average of 10 readings  
500-hour stress test at 150°C  
Drift4  
DC Power Supply Rejection Ratio  
(PSRR)  
°C/V TA = 25°C  
DIGITAL OUTPUTS (CT, INT, SDA—  
OPEN-DRAIN)  
High Output Leakage Current  
Output Low Voltage  
IOH  
VOL  
0.1  
2
5
0.4  
µA  
V
CT pin and INT pin pulled up to VDD  
Low output leakage current (IOL) = 1 mA at  
3.3 V  
Output High Voltage  
Output Capacitance  
DIGITAL INPUTS (SCL, SDA, A0, A1)  
Input Current  
VOH  
COUT  
0.7 × VDD  
V
pF  
1
µA  
V
Input voltage (VIN) = 0 V to VDD  
SCL and SDA only  
Input Low Voltage  
VIL  
0.3 ×  
VDD  
0.4  
V
V
V
A0 and A1 only  
SCL and SDA only  
A0 and A1 only  
Input High Voltage  
VIH  
0.7 × VDD  
2
SCL and SDA Glitch Rejection  
50  
2
ns  
Input filtering suppresses noise spikes of  
<50 ns  
Pin Capacitance  
10  
pF  
POWER REQUIREMENTS  
Supply Voltage  
Supply Current  
1 SPS Current  
Shutdown Current  
Power Dissipation Normal Mode  
Power Dissipation 1 SPS  
Power Dissipation Shutdown Mode  
2.7  
3.0  
210  
46  
2.0  
700  
140  
6
3.3  
265  
V
µA  
µA  
µA  
µW  
µW  
µW  
VDD = 3.3 V while converting, I2C inactive  
VDD = 3.3 V in 1 SPS mode, TA = 25°C  
VDD = 3.3 V  
VDD = 3.3 V, TA = 25°C  
VDD = 3.0 V, TA = 25°C  
15  
VDD = 3.0 V, TA = 25°C  
1 The accuracy specification includes repeatability.  
2 These limits represent a 3-sigma distribution when devices are soldered to the PCB using a 16-point rolling average filter with a 300 ms sample period with the device  
in continuous conversion mode.  
3 The temperature hysteresis specification does not include repeatability.  
4 Drift includes solder heat resistance and lifetime test performed as per JEDEC Standard JESD22-A108.  
Rev. A | Page 3 of 23  
 
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