INA226电流采样芯片：功率监测、电压监测、报警功能总结
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更新于2024-03-22
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The INA226 is a current sensing chip designed for high-side or low-side current sensing applications. It is equipped with various registers such as Power Register, Current Register, Voltage Register, and Alert Register. The chip is compatible with I2C or SMBus interface and operates with a supply voltage range of 0 V to 36 V. The INA226 can be used in a variety of applications where accurate current sensing is required, such as power management systems, battery charging systems, and motor control systems. The chip provides precise measurement of current, voltage, and power, making it ideal for monitoring and controlling power consumption in electronic devices. With its compact size and versatile interface options, the INA226 is a reliable and efficient solution for current sensing applications.
Population
-100
-80
-60
-40
-20
0
20
40
60
80
100
Input Gain Error (m%)
0
100
200
300
400
500
600
−50 −25 0 25 50 75 100 125
Temperature (°C)
Gain Error (m%)
G007
−2.4
−2.2
−2
−1.8
−1.6
−1.4
−1.2
−1
−50 −25 0 25 50 75 100 125
Temperature (°C)
Offset (µV)
G003
140
150
160
170
−50 −25 0 25 50 75 100 125
Temperature (°C)
Common−Mode Rejection Ratio (dB)
G004
Population
-10
-8
-6
-4
-2
0
2
4
6
8
10
Input Offset Voltage ( V)m
−60
−50
−40
−30
−20
−10
0
1 10 100 1k 10k 100k
Frequency (Hz)
Gain (dB)
G001
INA226
www.ti.com.cn
ZHCS078A –JUNE 2011–REVISED AUGUST 2015
6.6 Typical Characteristics
At T
A
= 25°C, V
VS
= 3.3 V, V
IN+
= 12 V, V
SENSE
= (V
IN+
– V
IN–
) = 0 mV and V
VBUS
= 12 V, unless otherwise noted.
图图 2. Shunt Input Offset Voltage Production Distribution
图图 1. Frequency Response
图图 3. Shunt Input Offset Voltage vs Temperature 图图 4. Shunt Input Common-Mode Rejection Ratio vs
Temperature
图图 5. Shunt Input Gain Error Production Distribution
图图 6. Shunt Input Gain Error vs Temperature
版权 © 2011–2015, Texas Instruments Incorporated 7
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