Product Introduction

The INA219 is a shunt and power monitor with I2C or SMBUS compatible interface. The device monitors the shunt voltage drop and the bus supply voltage, the number of conversions and the filter options are programmed by setting. The programmed calibration value is combined with an internal multiplier to support direct read current (amperes). The power (in watts) can be calculated by adding a multiplication register. The I2C or SMBUS compatible interface has 16 programmable addresses.

Pin Description

Schematic

INA199A1DCKR

INA169

Product Features

1. Complete unipolar high side current measurement circuit

2. Wide power supply and common mode range

3. Input voltage 2.7V to 60V

4. Independent power supply and input common mode voltage

5. Single resistor gain setting

6. Low static current: 60 uA (typical value)

INA169 current sensor module

Product Application

Diversion measurement

Cars, telephones, computers

Portable and backup battery system

Battery Charger

Power management

Precision current source

Product parameters

Voltage input: 2.7-60V

Accuracy: ± 0.5%

Induction method: high-end

Working temperature: -40 ° C~+85 ° C

Board size: 24 * 20 (MM)

Pin Name   Pin Function

VCC   power supply positive pole

GND   power supply negative pole

OUT   output current

VIN -   Negative input voltage

VIN+   positive input voltage

MAX471

Performance parameters:

Voltage range: 3-36V

Detection current range: 0-3A

Current voltage conversion ratio: 1V/A

Within the normal operating temperature range, the accuracy is 2%

MAX power supply current is 100uA

This module should be connected before the load that needs to detect current and after the load power supply.

As shown in the following figure:

Input wiring: INPUT+directly connected to the positive pole of the power supply (positive pole of the load power supply), IUPUT - directly connected to the positive pole of the load (changed to load power supply).

GND is connected to the negative pole of the power supply or load.

Output wiring: OUT outputs the voltage value, so it can be connected to the AD input terminal of microcontrollers and other devices. The ratio of output voltage value to detected current value is 1V/A. (The output voltage value is 1V, which indicates that the detected current is 1A)

Connect GND to the negative terminal of the microcontroller.

INA3221 is a three-channel, high-side current and total line voltage monitor with an interface compatible with 2C and SMBUS. INA3221 can not only monitor the shunt voltage drop and bus power supply voltage, but also provide programmable conversion time and average value calculation mode for these signals. Ino3221 provides key alarms and warning alarms to detect various out-of-range conditions programmable on each channel.
Ino3221 sense the current on the bus (the voltage varies from 0V to +26V). This device is powered by A single power supply from 2.7V to 5.5V, and the ICC, IDD consumption is 350 μA (typical value). The rated operating temperature range of INA3221 is-40°C to +125°C. Interfaces compatible with 2C and SMBUS have four programmable addresses.

Features:

1. three-channel monitoring, each bus voltage can be used

2. 0.1 ohms 1% 2W current detection electronic resistance.

3. Maximum 26v detection voltage, ± 8mV accuracy.

4. The highest ± 1.638A current measurement, ± 0.4 Ma accuracy.

5. PCB size: 38*32mm.

6. Weight (excluding pin arrangement and others): 4.4g.

7. The module can be selected through the pad wire jumper, using 4 2c addresses: 0 x40, 0 x41, 0 x44, 0 x45.

8. Triple-Channel with different bus voltage.

9. 0.1 ohm 1% 2W current sense resistor.

10. Up to +26V target voltage, with ±8mV resolution.

11. Up to ±1.638A current measurement, with ±0.4mA resolution.

12. Dimension: 38*32mm.

13. PCB (no header or terminal block): 4.4g.

14. This board/chip uses I2C 7-bit addresses 0x40, 0x41, 0x44, 0x45, selectable with jumpers

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Free shipping 226 INA226 IIC interface Bi-directional current/power monitoring sensor module

226 - support alarm function of the 36 v, bidirectional, high precision, low side and high side power monitor, I2C output current

The highest INA226 disturbance voltage of 10 microvolts (uV), the largest gain error is 0.1%, precision is 10 times higher than the industry leading competitive products. This device is a complete 16-bit single chip solutions, to number the I2C interface of current, voltage and power to provide comprehensive programmable measurement. INA226 for servers, computers, telecommunications equipment, power management equipment and test equipment design staff with great advantages, can fully meet the requirements for the precise power measurement.

The main features and advantages
, with the I2C interface of single chip solutions to support current, voltage and power measurement, to simplify the need for external multiplexer or ADC circuit board design, to layout the limitations;
Industry the highest accuracy, with a modest 0.1% uV maximum offset voltage and maximum gain error, not only can implement higher precision in low power flow, but also can use smaller shunt resistor, which can reduce the loss of the I * R;
independent programmable conversion time and sample average technique not only can simplify the speed requirement of each system customization, but also can reduce the demand for software and storage;
, uA 420 largest static current and uA the mark 2 break current support efficient work, even if INA226 integrated ADC and power multiplexer, power consumption and the discrete solution of 3.5% lower than the similar competitive products;
140 dB, common mode rejection ratio (CMRR) and 36 V common-mode voltage (CMV) within the scope of work to ensure minimal or no changes of offset voltage, which can simplify the error analysis.

Product Description:

The INA240 device is a voltage-output, current-detecting amplifier with enhanced PWM suppression that detects voltage drops across shunt resistors in a wide common-mode voltage range from -4V to 80V independent of the supply voltage. The negative common-mode voltage allows the operating voltage of the device to be lower than the ground voltage, thus adapting the flyback period low power consumption of typical solenoid applications is a key issue. The enhanced PWM suppression capability provides a high level of suppression for large common-mode transients (△V/△t) in systems that use pulse width modulation (PWM) signals, such as motor drive and solenoid control systems. With this function, the current can be accurately measured without large transient and corresponding recovery ripple of the output voltage.

Product parameters:

Module type: High/low side, bidirectional, zero drift current detection amplifier, PWM suppression function

Chip model: INA240A2

Wide common-mode voltage range: -4V to 80V

Fixed gain: 50v/v

Power supply range: 3.0V to 5.0V

Current detection range: determined by sampling resistance, gain and supply

Common-mode rejection ratio: 132dB DC/93dB AC(50kHz)

Sampling mode: high/low side can be used, depending on the connection mode

Sampling resistance: 2512-0.1R, users can also configure

Ambient temperature: -25℃ < TA <85℃

Module size: 2*2.1MM

Application: Suitable for motor control, power management, solenoid and valve control, brake control, pressure regulator, etc

The MAX4080/MAX4081 are two high-side current sense amplifiers with an input voltage range of 4.5V to 76V. They are very suitable for telecommunications, automotive, backplane and other systems that require close monitoring of high-voltage currents. The MAX4080 is only suitable for unidirectional current detection, while the MAX4081 can perform bidirectional current detection. Through the MAX4081 single output pin, you can continuously monitor the entire process from charge to discharge, without the need for additional polarity output. The MAX4081 also requires an external reference to set the output level at zero current (VSENSE = 0V). The output voltage range reflecting the magnitude of the charging current is between VREF and VCC, while the output voltage reflecting the magnitude of the discharging current is between VREF and GND. The input voltage range of this group of chips 76V is completely independent of the power supply voltage (VCC) and common mode input voltage (VRS +), and MAX extends its application range to a limited extent. Since the high-side current sense does not interfere with the ground wire of the load under test, the MAX4080/MAX4081 is widely used in high-voltage systems.

Module parameters:
Wide Common Mode Input Voltage Range, 4.5V to 76V
Working current ≤ 190uA
+0.1% full-scale accuracy
100 μV Low Input Offset Voltage
Independent Operating Supply Voltage 4.5V to 76V
Operating temperature range- -40 ° C to +125 ° C
Instructions for use:
The sense resistor uses 0.10
RS +: positive terminal of external sense resistor
RS-: Negative terminal of external sense resistor
VCC: positive end of power supply
OUT: Conversion voltage output
FIA, FIB: The MAX4080 chip used by the module, without connection.

INA231 high side or low side measurement, bidirectional current and power monitor with 1.8V I2C interface

INA231 is a current shunt and power monitor with a 1.8V I2C compatible interface (with 16 programmable addresses). The INA231 monitors shunt voltage drop and bus power supply voltage, providing enhanced protection by setting the ALERT pin to active when the corresponding value exceeds the programmed range.

Programmable calibration values, conversion times, and averaging can be used in conjunction with an internal multiplier to achieve direct reading of current values (in amperes) and power values (in watts), thereby reducing host processing load.

The INA231 detects the current on the bus voltage (between 0V and 28V). The device is powered by a single power supply of 2.7V to 5.5V, and consumes a power supply current of 330 μ A (typical value). The INA231 has a rated operating temperature range of - 40 ° C to+125 ° C.