Images are for reference only
MAX9938HEUK+T
+BOM-
ManufacturerAnalog Devices Inc./Maxim Integrated
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Mfr. Part #MAX9938HEUK+T
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In Stock7079
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Specifications
| Attribute | Value |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Amplifier Type | Current Sense |
| Number of Circuits | 1 |
| -3 dB Bandwidth | 30 kHz |
| Voltage - Input Offset | 100 µV |
| Supply Current | 1.1µA |
| Voltage - Supply Span(Min) | 1.6 V |
| Voltage - Supply Span(Max) | 28 V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
Overview
Description
Key features include a fixed gain of 50V/V, a low quiescent current, and a wide operating temperature range from -40°C to +125°C, ensuring reliability in diverse environments. The MAX9938HEUK+T is housed in a compact SOT-23-5 package, which is ideal for space-constrained applications. Its design allows for easy integration into systems requiring efficient power monitoring and management. The device is part of the MAX9938 series, which offers various gain options to suit different application needs.
Equivalent
1. INA199 by Texas Instruments - A low-power, zero-drift, current-sense amplifier.
2. LTC6101 by Analog Devices (formerly Linear Technology) - A precision current sense amplifier.
3. AD8210 by Analog Devices - A high-voltage, high-side current shunt monitor.
4. TS1100 by Silicon Labs - A zero-drift, low-power current sense amplifier.
These alternatives offer similar functionalities for current sensing applications.
Features
1. Wide Input Common-Mode Voltage Range: It can operate with a voltage range from -0.1V to +28V, making it versatile for various applications.
2. High Accuracy: The device offers low offset voltage and a gain error, providing high measurement accuracy.
3. Fixed Gain Option: It comes with a fixed gain of 50V/V, simplifying design and reducing external component count.
4. Low Quiescent Current: The amplifier consumes minimal power, approximately 10µA, enhancing efficiency in battery-powered applications.
5. Small Footprint: Housed in a tiny 5-pin SOT23 package, it suits space-constrained designs.
6. Bidirectional Current Sensing: It can measure both directions of current flow, offering flexibility in monitoring applications.
7. Temperature Range: The device is designed to operate across a wide temperature range, from -40°C to +125°C.
These features make the MAX9938HEUK+T ideal for high-side current sensing in automotive, industrial, and consumer applications.
Pinout
The pin configuration and functions are as follows:
1. IN+: Positive input for the current sense. Connect this pin to the high-side of the shunt resistor.
2. IN-: Negative input for the current sense. Connect this pin to the low-side of the shunt resistor.
3. OUT: Output pin for the amplified voltage, which is proportional to the sensed current.
4. VCC: Power supply pin. Connect this to the supply voltage, typically between 2.7V and 28V.
5. GND: Ground pin. Connect this to the system ground.
This device is used for precise current measurements in systems where the current flows through a shunt resistor, and it can operate with common-mode voltages up to 28V.