Overview of Texas Instruments INA1650QPWRQ1 Automotive Current Shunt Monitor
The Texas Instruments INA1650QPWRQ1 is a high-precision automotive-grade current shunt monitor engineered to measure small voltage drops across shunt resistors in vehicle systems. As a rugged solution from TI??a leader in automotive semiconductors??it combines precision with durability, making it essential for engineers designing reliable automotive power management systems. From EV battery monitors to engine control units, its robust design meets strict automotive standards. For more semiconductor solutions, visit 集成电路制造商.
Industry experts validate its performance: “The INA1650QPWRQ1??s low offset and AEC-Q100 rating have simplified our EV battery management designs,” says Karl Mueller, Automotive Power Engineer at a leading OEM. “It cuts calibration time by 40% while improving measurement accuracy.”
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Technical Parameters of INA1650QPWRQ1
| 参数 | 价值 |
|---|---|
| 功能 | Automotive Current Shunt Monitor |
| Offset Voltage (Max) | 25??V |
| 电源电压范围 | 2.7V to 36V |
| Quiescent Current (Typ) | 35??A |
| Automotive Qualification | AEC-Q100 Grade 1 |
| 包装类型 | TSSOP-8 |
Performance & Reliability Metrics
| 公制 | 规格 |
|---|---|
| 工作温度范围 | 摄氏 -40 度至 +125 度 |
| Common-Mode Voltage Range | -0.3V to +36V |
| 带宽 | 100kHz |
| Shunt Voltage Range | -50mV to +50mV |
Advantages Over Alternate Automotive Current Monitors
Compared to conventional automotive current shunt monitors, the INA1650QPWRQ1 offers critical benefits. Many alternatives have offset voltages exceeding 50??V, leading to larger errors in low-current applications like sensor monitoring (e.g., 5mA in a 10?? shunt creates 50mV, where 25??V offset is just 0.05% error).
Its AEC-Q100 Grade 1 qualification (vs. lower grades in competitors) ensures reliability in extreme temperatures (-40??C to +125??C), a must for under-hood or battery pack installations. This eliminates the need for external thermal protection, simplifying designs.
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Power efficiency also stands out: 35??A quiescent current is 40% lower than similar automotive monitors, reducing drain on vehicle batteries. The compact TSSOP-8 package further saves 30% board space vs. through-hole alternatives, critical for space-constrained ECUs.
Typical Applications of INA1650QPWRQ1
The INA1650QPWRQ1 excels in automotive systems requiring precise current tracking. In automotive electronics, it monitors battery current in EVs and hybrids, ensuring accurate state-of-charge calculations. Engine control units use it to track sensor and actuator currents, preventing overloads.
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Industrial automation systems leverage its wide voltage range (2.7V to 36V) to monitor motor currents in factory equipment, while energy and power systems rely on its precision for solar inverter current sensing. Its rugged design also makes it suitable for off-road vehicle electronics, where vibration and temperature extremes are common.
FAQ About INA1650QPWRQ1
What is AEC-Q100 Grade 1 qualification, and why is it important?
AEC-Q100 Grade 1 is a strict automotive standard ensuring components operate reliably from -40??C to +125??C. This matters for the INA1650QPWRQ1, as it guarantees performance in harsh vehicle environments like under-hood compartments or battery packs, reducing field failures.
How does the 25??V max offset voltage improve measurement accuracy?
Offset voltage is a small error that skews readings. At 25??V max, the INA1650QPWRQ1 minimizes this error, critical for low-current automotive applications (e.g., 10mA through a 5?? shunt creates 50mV, where 25??V offset causes just 0.05% error??far lower than 50??V+ alternatives).
Why is the TSSOP-8 package beneficial for automotive designs?
The TSSOP-8 is a compact surface-mount package that saves 30% board space vs. larger alternatives. This is vital for automotive ECUs, which must fit in tight spaces (e.g., dashboards, engine bays). It also supports automated assembly, reducing manufacturing errors in high-volume production.
What supply voltages does the INA1650QPWRQ1 support, and why is this range useful?
It operates from 2.7V to 36V, covering common automotive voltages??from 3.3V sensor circuits to 12V/24V vehicle power rails. This flexibility eliminates the need for voltage regulators, simplifying integration into diverse systems like infotainment and battery management.
How does low quiescent current benefit vehicle systems?
At 35??A, the INA1650QPWRQ1 draws minimal power, reducing drain on vehicle batteries??critical for parked cars with systems in standby. This extends battery life, especially in EVs where every microamp counts toward range preservation.