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Texas Instruments INA2180A3QDGKRQ1
- Part No.:
- INA2180A3QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA2180A3QDGKRQ1.pdf
- Description:
- IC CURR SENSE 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,495
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Product details
Overview
INA2180A3QDGKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 dual-channel automotive current-sense amplifier with 100 V/V fixed gain, –0.2 V to +26 V common-mode input range, ±500 µV max offset at 12 V VCM, 150 kHz bandwidth, and 2 V/µs slew rate-used for high-accuracy motor control and battery monitoring in 12 V/24 V vehicle systems.
For engineers reviewing the INA2180A3QDGKRQ1 datasheet, INA2180A3QDGKRQ1 pinout, INA2180A3QDGKRQ1 application, or INA2180A3QDGKRQ1 equivalent, key selection criteria include dual-channel integration for space-constrained ECUs, rail-to-rail output swing enabling full-scale ADC utilization, functional safety documentation support, and guaranteed performance across –40°C to +125°C ambient.
Technical Context
The INA2180A3QDGKRQ1 employs a precision current-sense topology with integrated matched resistor gain network (100 V/V), enabling accurate measurement of voltage drops across shunt resistors independent of supply voltage. Its differential input stage supports bidirectional sensing in both high-side and low-side configurations without phase reversal.
It operates from a single 2.7 V to 5.5 V supply while maintaining specified accuracy over –0.2 V to +26 V common-mode voltage, making it suitable for direct connection to 12 V/24 V bus rails. The device features 1-µV/°C max offset drift and ±1% max gain error, ensuring stable performance under thermal stress in engine bay or powertrain environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V fixed-enables 10 mV sense voltage to produce 1 V output, optimizing resolution for mid-range current measurements. |
| Common-mode range | –0.2 V to +26 V-supports direct sensing on 12 V/24 V battery rails without level-shifting or external protection. |
| Offset voltage | ±500 µV max at VCM = 12 V-limits worst-case error to ≤0.5% of full-scale output when using 10 mΩ shunt at 5 A. |
| Bandwidth | 150 kHz-captures fast transients in BLDC motor commutation or short-circuit events within <7 µs rise time. |
| Slew rate | 2 V/µs-ensures linear response to step changes in sensed current up to 20 mA/µs at 100 V/V gain. |
| Quiescent current | 500 µA max-reduces standby power draw in always-on vehicle modules such as body controllers or battery monitors. |
| Supply voltage | 2.7 V to 5.5 V-compatible with standard 3.3 V or 5 V microcontroller domains without LDO overhead. |
Pinout & Package
VSSOP-8 package (3.00 mm × 3.00 mm), thermally enhanced for automotive under-hood operation; pin-compatible with other INA2180-Q1 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Analog output | Channel 1 voltage output referenced to GND; rail-to-rail swing enables direct interface with 3.3 V ADCs. |
| 2 (IN−1) | Analog input | Negative input for channel 1; connects to load side of shunt in high-side config or ground side in low-side config. |
| 3 (IN+1) | Analog input | Positive input for channel 1; connects to bus-voltage side of shunt in high-side config or load side in low-side config. |
| 4 (GND) | Analog ground | Reference node for all analog signals; must be tied to low-impedance system ground plane to minimize noise coupling. |
| 5 (IN+2) | Analog input | Positive input for channel 2; electrically isolated from channel 1 inputs to prevent crosstalk in dual-sensing applications. |
| 6 (IN−2) | Analog input | Negative input for channel 2; supports independent current monitoring of two loads (e.g., motor phase + battery feed). |
| 7 (OUT2) | Analog output | Channel 2 voltage output; identical electrical specs to OUT1-enables simultaneous dual-channel acquisition. |
| 8 (VS) | Analog supply | 2.7 V–5.5 V power input; requires local 0.1 µF ceramic bypass capacitor placed within 2 mm of pin per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation-meets automotive ECU thermal requirements without derating. |
| Functional safety documentation | Includes FIT rate, failure mode analysis, and diagnostic coverage guidance-accelerates ISO 26262 ASIL-B system certification. |
| Rail-to-rail output swing | Swings to within 30 mV of VS and 0.5 mV of GND-maximizes dynamic range for 12-bit ADCs without external amplification. |
| Matched internal gain resistors | Minimizes gain error drift to 1.5 ppm/°C-maintains calibration stability across temperature without software compensation. |
| High CMRR (84 dB min) | Rejects bus voltage ripple and switching noise-ensures accurate current reading even during PWM-driven load transients. |
Applications
| Motor Control | Battery Monitoring |
|---|---|
|
Use Scenario: Real-time phase current sensing in 3-phase BLDC traction or HVAC blower motors. IC Role / Device Role / Timing Role: Dual-channel current-sense amplifier measuring high-side and low-side currents simultaneously for field-oriented control (FOC) algorithms. Use Value: 150 kHz bandwidth captures commutation edges; ±500 µV offset ensures <1% error at stall current, improving torque linearity and efficiency. |
Use Scenario: Continuous monitoring of 12 V lead-acid or 48 V Li-ion battery pack charge/discharge current. IC Role / Device Role / Timing Role: High-side current monitor on main battery feed, rejecting load dump transients up to 26 V. Use Value: –0.2 V to +26 V common-mode range eliminates need for external level shifters; 500 µA quiescent current extends standby runtime. |
| Power Management | Overcurrent Detection |
|
Use Scenario: Current supervision of DC-DC converter outputs in ADAS domain controllers. IC Role / Device Role / Timing Role: Low-side shunt monitor feeding analog input of safety MCU for real-time power budgeting and thermal management. Use Value: 100 V/V gain provides 1 V output per 10 mV across 10 mΩ shunt-matches typical 1 V reference ADC full scale for minimal scaling error. |
Use Scenario: Fast fault detection in seat heater or window lift circuits with programmable trip thresholds. IC Role / Device Role / Timing Role: High-bandwidth current sensor driving comparator input to trigger shutdown within 7 µs of overcurrent event. Use Value: 2 V/µs slew rate ensures output reaches comparator threshold before fuse blow time; dual channels enable redundant sensing for ASIL-C compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A3QDRQ1 | Higher bandwidth (400 kHz), lower offset (±150 µV max), but higher quiescent current (1.8 mA) | Better suited for high-speed motor control requiring sub-µs response; less optimal for always-on battery monitoring due to higher power draw | Select when bandwidth >200 kHz is mandatory and supply current is not constrained |
| MAX40056ATA+T | Wider common-mode range (–5 V to +65 V), rail-to-rail I/O, but single-channel and no AEC-Q100 grade | Applicable in industrial 48 V systems or non-automotive EV charging; lacks automotive qualification and dual-channel integration | Select for non-automotive high-voltage applications where dual-channel integration is not required |
Compared with INA2180A3QDGKRQ1, INA240A3QDRQ1 offers superior speed and precision at the cost of 3.6× higher supply current, while MAX40056ATA+T extends voltage capability beyond automotive rails but sacrifices qualification, channel count, and system-level safety support.
Availability
INA2180A3QDGKRQ1 is available at Aetrix Electronics and suitable for motor control, battery monitoring, and power management applications requiring stable component supply in automotive production programs.
Supply support for INA2180A3QDGKRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with deep expertise in automotive-grade signal conditioning and power management ICs.
The INA2180-Q1 product line delivers cost-optimized, AEC-Q100 qualified current-sense amplifiers for high-reliability automotive subsystems including body electronics, powertrain, and ADAS, emphasizing integration, thermal robustness, and functional safety readiness.
FAQ
What is the maximum common-mode voltage supported by the INA2180A3QDGKRQ1?
The INA2180A3QDGKRQ1 supports a common-mode input voltage range of –0.2 V to +26 V, enabling direct connection to 12 V and 24 V automotive battery rails without external level-shifting circuitry. This specification is guaranteed across the full operating temperature range of –40°C to +125°C and is independent of the 2.7 V to 5.5 V supply voltage applied to the VS pin.
Does the INA2180A3QDGKRQ1 support high-side and low-side current sensing configurations?
Yes, the INA2180A3QDGKRQ1 supports both high-side and low-side current sensing. Its wide –0.2 V to +26 V common-mode range allows the IN+ and IN− inputs to operate above or below the VS supply rail. In high-side configuration, IN+ connects to the bus voltage side of the shunt and IN− to the load side; in low-side configuration, IN+ connects to the load side and IN− to ground.
What is the gain accuracy and temperature drift performance of the INA2180A3QDGKRQ1?
The INA2180A3QDGKRQ1 has a fixed gain of 100 V/V with ±1% maximum gain error over –40°C to +125°C, and gain error drift of 1.5 ppm/°C. These specifications ensure stable current measurement scaling across automotive thermal environments without requiring periodic recalibration or software compensation routines in the host microcontroller.
How does the INA2180A3QDGKRQ1 handle output swing near supply rails?
The INA2180A3QDGKRQ1 features rail-to-rail output swing, delivering output voltages as close as 30 mV to VS and 0.5 mV to GND under 10 kΩ load conditions. This maximizes usable dynamic range for 3.3 V or 5 V ADCs, reducing quantization error and eliminating the need for external output amplification stages in most automotive sensing applications.
Is functional safety documentation available for the INA2180A3QDGKRQ1?
Yes, Texas Instruments provides functional safety documentation for the INA2180A3QDGKRQ1, including FIT rate data, failure mode effect analysis (FMEA), and diagnostic coverage guidance. This documentation supports ISO 26262 ASIL-B system-level development for automotive applications such as battery management and motor control ECUs.
INA2180A3QDGKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 150 kHz
- -3db Bandwidth:
- 150 kHz
- Current - Input Bias:
- 80 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 355µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
INA2180A3QDGKRQ1 FAQ
1.How can I place an order for INA2180A3QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA2180A3QDGKRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for INA2180A3QDGKRQ1 reliable?
The price and inventory of INA2180A3QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA2180A3QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for INA2180A3QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA2180A3QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA2180A3QDGKRQ1?
INA2180A3QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA2180A3QDGKRQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for INA2180A3QDGKRQ1?
For technical support, including INA2180A3QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA2180A3QDGKRQ1 requirements.
6.How does Aetrix verify that INA2180A3QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA2180A3QDGKRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that INA2180A3QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of INA2180A3QDGKRQ1?
All INA2180A3QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA2180A3QDGKRQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The INA2180A3QDGKRQ1 part is unused and in its original packaging.
Return procedure for INA2180A3QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA2180A3QDGKRQ1 Tags
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Texas Instruments
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MCP6006T-E/OT
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