INA138NA/3K: Features, Specs & More
When designing precision electronics, choosing the right components is crucial to ensuring accuracy and efficiency. One such key component is the TI INA138NA/3K Current Sense Amplifier. In this comprehensive article, we'll delve into the intricacies of the INA138NA/3K, uncovering its definition, key features, specifications, applications, and a closer look at its manufacturer.
Catalog
INA138NA/3K's Overview
The INA138NA/3K is a high-performance current sense amplifier manufactured by Texas Instruments. It operates in a single-supply configuration, supporting a voltage range from 2.7V to 36V, making it ideal for various power management and current sensing applications. As a current sense amplifier, it accurately measures the voltage drop across a current shunt resistor, enabling precise current measurements for monitoring and control purposes.
Key Features
Let's delve into the standout features that make the INA138NA/3K a standout in the world of electronics:
· The INA138NA/3K features a minimum CMRR of 100 dB, making it highly effective at rejecting common-mode noise.
· With a single supply voltage ranging from 2.7V to 36V, this amplifier is highly versatile and can work across various power supplies.
· The maximum input offset voltage is only 1 mV at 5V, ensuring minimal measurement errors.
· The INA138NA/3K comes in a SOT-23 package, making it suitable for compact designs where space is limited.
· It operates effectively in temperatures ranging from -40°C to 125°C, ensuring reliability across harsh environments.
Specifications
Now, let's take a closer look at the technical specifications that define the capabilities of the INA138NA/3K:
Type | Parameter |
Type | Current Sense Amplifier |
Number of Elements per Chip | 1 |
Number of Channels per Chip | 1 |
Minimum CMRR Range (dB) | 95 to 105 |
Minimum CMRR (dB) | 100 |
Maximum Input Offset Voltage (mV) | 1@5V |
Maximum Operating Supply Voltage (V) | 36 |
Maximum Supply Voltage Range (V) | 30 to 50 |
Minimum Single Supply Voltage (V) | 2.7 |
Typical Single Supply Voltage (V) | 12|15|18|24|28|3|5|9 |
Maximum Single Supply Voltage (V) | 36 |
Maximum Input Bias Current (uA) | 2(Typ)@5V |
Minimum Operating Temperature (°C) | -40 |
Maximum Operating Temperature (°C) | 125 |
Packaging | Tape and Reel |
Power Supply Type | Single |
Mounting | Surface Mount |
Package Height | 1.1 |
Package Width | 1.75(Max) |
Package Length | 3.05(Max) |
PCB changed | 5 |
Standard Package Name | SOT |
Supplier Package | SOT-23 |
Pin Count | 5 |
Lead Shape | Gull-wing |
Applications
The INA138NA/3K is widely used in various electronic applications that require accurate current sensing. Below are some of the key areas where it is implemented:
· Current Shunt Measurement: Ideal for systems requiring precise current measurement across a shunt resistor, such as telephones, computers, and other low-power devices.
· Portable and Battery-Backup Systems: Due to its low power consumption and wide voltage range, it is highly suitable for portable and battery-backup systems, ensuring efficient operation even in energy-constrained environments.
· Battery Chargers: This amplifier can be used in battery chargers for accurate current measurement and charging optimization.
· Power Management: In power management circuits, the INA138NA/3K helps in regulating power flow by providing accurate current sensing feedback.
· Cell Phones: The INA138NA/3K is a great fit for cell phones, where it helps in monitoring battery status and power usage.
· Precision Current Sources: It plays a crucial role in applications requiring precise current sources, enhancing measurement accuracy and control.
INA138NA/3K's Manufacturer
Texas Instruments (TI), established in 1930, is a global leader in semiconductor and technology solutions, known for its pioneering contributions to the electronics industry. Specializing in the design and manufacture of analog and digital circuits, microcontrollers, and processors, TI has played a pivotal role in shaping technological advancements across diverse sectors, including industrial, automotive, consumer electronics, and communication.
Conclusion
The TI INA138NA/3K current sense amplifier is an excellent choice for a wide range of applications requiring precision current measurements. With its high accuracy, low offset voltage, wide operating voltage range, and compact form factor, it is well-suited for everything from power management systems to battery chargers and portable devices.
