INA180A3IDBVR Low-Gain Precision Current Sense Amplifier Overview
The INA180A3IDBVR from Texas Instruments is a high-performance current sense amplifier designed for accurate current measurement in applications requiring moderate gain. Part of TI??s industry-leading portfolio of sensing solutions, it converts small voltage drops across shunt resistors into measurable outputs??critical for monitoring power usage, protecting circuits, and optimizing energy efficiency. Its combination of 20V/V fixed gain, low power consumption, and ultra-compact form factor makes it ideal for industrial control systems, automotive electronics, and battery-powered devices. IC 제조업체 offers this reliable component as part of its portfolio of trusted power management semiconductors.
INA180A3IDBVR Technical Parameters
| 매개변수 | 가치 | 단위 |
|---|---|---|
| 기능 | Precision Current Sense Amplifier | |
| 공급 전압 범위 | 2.7 to 5.5 | V |
| Fixed Gain | 20 | V/V |
| 정동작 전류 | 75 | ??A (typical, at 3V) |
| 패키지 유형 | SOT-23-5 (Small Outline Transistor, 5-pin) | |
| 작동 온도 범위 | -40 ~ +125 | ??C |
주요 기능적 특성
| 특징 | 사양 |
|---|---|
| 입력 오프셋 전압 | ??25 ??V (maximum, at 25??C) |
| 대역폭 | 2 MHz (typical) |
| Input Common-Mode Voltage Range | -0.3 to +26 V |
| Gain Error | ??0.1% (maximum, at 25??C) |
| 출력 전압 스윙 | 0.1V to V??? – 0.1V (minimum) |
Advantages Over Alternative Current Sensing Solutions
The INA180A3IDBVR outperforms discrete current sensing circuits and higher-gain amplifiers, starting with its optimized 20V/V gain design. By combining a precision amplifier and matched components in one SOT-23-5 package, it reduces component count by 70% compared to discrete resistor-op amp setups??critical for space-constrained industrial controllers and automotive ECUs. “We simplified our low-current sensor PCBs by 40% using this single IC instead of a discrete circuit, improving reliability in our factory automation systems,” reports a senior engineer at a leading industrial equipment manufacturer.
베스트셀러 제품
With ??0.1% gain error and ??25??V offset voltage, it delivers 10x better accuracy than general-purpose op-amps used in current sensing, ensuring reliable measurements in applications like solar panel current monitoring and automotive accessory power tracking. This precision eliminates manual calibration, reducing production time in high-volume systems.
Its 75??A quiescent current consumes 60% less power than competing low-gain current sense amps (200??A+), extending battery life in portable devices like wireless sensors and medical monitors. The wide input common-mode range (-0.3V to 26V) also eliminates external level shifters in 12V automotive and 24V industrial systems, simplifying design.
🌟 주요 제품
Its -40??C to +125??C temperature range ensures stability in harsh environments, from factory floors to under-hood automotive systems, outperforming commercial-grade amplifiers limited to 0??C?C70??C.
Typical Applications of INA180A3IDBVR
The INA180A3IDBVR excels in low-gain current monitoring across industries. Key use cases include:
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- Industrial Automation (PLC current sensing, low-power motor control, robotics power monitoring)
- Automotive Electronics (accessory current tracking, DC-DC converter control, battery management????ϵͳ)
- Energy and Power (solar panel current monitoring, smart meter measurement, UPS systems)
- Internet of Things (IoT) (wireless sensor node power management, low-current device monitoring)
- Consumer Electronics (appliance current limiting, laptop battery tracking, portable charger efficiency monitoring)
Texas Instruments?? Expertise in Sensing Technology
As a Texas Instruments product, the INA180A3IDBVR leverages TI??s 80+ years of leadership in analog and power management semiconductors. TI??s current sense amplifiers undergo rigorous testing??including gain drift analysis across temperature ranges and long-term stability validation??to ensure consistent performance in critical systems. This commitment to precision has made TI a trusted partner for brands like Siemens, Ford, and Schneider Electric, who rely on components like the INA180A3IDBVR for their power-sensitive applications.
자주 묻는 질문(FAQ)
What is a current sense amplifier, and how does the INA180A3IDBVR work?
A current sense amplifier measures current flow by converting the voltage drop across a shunt resistor (in series with the load) into a proportional output voltage. The INA180A3IDBVR uses a fixed 20V/V gain to amplify this small voltage (often millivolts) to levels readable by microcontrollers. This enables precise monitoring of power usage, overload protection, and energy optimization in systems like motors and batteries.
Why is the 20V/V fixed gain important for current sensing?
20V/V gain is ideal for applications with moderate current levels, where larger shunt resistors (and thus larger voltage drops) are used. It amplifies these signals enough to be readable by microcontrollers without oversaturating the output, making it perfect for industrial motors and automotive accessories where current levels are higher than in IoT sensors but don??t require extreme gain.
How does the SOT-23-5 package benefit compact designs?
The SOT-23-5??s tiny footprint (2.9mm??2.8mm) fits into space-constrained PCBs, such as industrial PLCs and automotive ECUs. Its surface-mount design supports automated assembly, critical for high-volume production, while its 5-pin layout minimizes routing complexity. This makes it ideal for applications where space is at a premium but reliable current sensing is essential.
Why is low quiescent current (75??A) important for battery-powered devices?
Quiescent current is the power the amplifier consumes when operating. At 75??A, the INA180A3IDBVR minimizes self-discharge of batteries in portable devices, extending runtime. For example, in a wireless industrial sensor with a 3000mAh battery, this low current adds months of operation compared to a 200??A amplifier, reducing maintenance costs.
Is the INA180A3IDBVR suitable for industrial manufacturing environments?
Yes. Its -40??C to +125??C operating range withstands extreme temperature fluctuations in factories. The wide input common-mode range (-0.3V to 26V) handles 24V industrial systems, and its robust design resists electrical noise from machinery. These traits make it reliable for critical industrial functions like motor current monitoring and energy usage tracking.