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Texas Instruments INA180A2QDBVRQ1
- Part No.:
- INA180A2QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
INA180A2QDBVRQ1.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,333
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Product details
Overview
INA180A2QDBVRQ1 from Texas Instruments is an automotive-grade, single-channel current-sense amplifier designed for high- and low-side sensing in 12 V/24 V automotive systems. It features 50 V/V fixed gain, –0.2 V to +26 V input common-mode range, ±500 µV max offset at 12 V VCM, 210 kHz bandwidth, and 2 V/µs slew rate - enabling accurate motor phase current monitoring in battery-powered traction inverters.
For engineers reviewing the INA180A2QDBVRQ1 datasheet, INA180A2QDBVRQ1 pinout, INA180A2QDBVRQ1 application, or INA180A2QDBVRQ1 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification (–40°C to +125°C), functional safety documentation support, rail-to-rail output swing, matched resistor gain network accuracy, and SOT-23 pinout compatibility with PCB layout reuse across A1/A2/A3/A4 variants.
Technical Context
The INA180A2QDBVRQ1 implements a precision current-shunt monitor architecture with integrated matched gain resistors, eliminating external resistor matching errors and reducing temperature-induced gain drift to ≤20 ppm/°C. Its proprietary topology enables operation with input common-mode voltage up to 26 V while powered from only 2.7 V to 5.5 V - decoupling sensing capability from supply constraints.
This device supports both high-side and low-side configurations via differential IN+ and IN– inputs, with internal ESD protection (HBM ±3 kV, CDM ±1 kV) and functional safety documentation for ISO 26262 ASIL-B system integration. Output swing reaches within 30 mV of VS and 0.5 mV of GND under 10 kΩ load, ensuring full dynamic range utilization with 12-bit ADCs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V fixed - eliminates external gain-setting resistors and associated tolerance/temperature drift errors |
| Common-mode range | –0.2 V to +26 V - supports direct sensing on 24 V battery rails without level-shifting circuitry |
| Offset voltage | ±500 µV max at VCM = 12 V - enables accurate sub-100 mA current measurement with 10 mΩ shunt |
| Bandwidth | 210 kHz - captures fast transient currents in BLDC motor commutation and overcurrent fault detection |
| Quiescent current | 260 µA max - allows continuous monitoring in always-on vehicle modules without excessive battery drain |
| Output swing | Within 30 mV of VS and 0.5 mV of GND - maximizes ADC utilization and resolution in 3.3 V systems |
| Supply voltage | 2.7 V to 5.5 V - compatible with standard automotive LDO outputs and microcontroller I/O domains |
Pinout & Package
The INA180A2QDBVRQ1 is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained automotive ECUs and motor control boards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Analog output - delivers amplified, referenced voltage proportional to sensed current; drives ADC or comparator directly |
| 2 | GND | Analog ground - reference node for internal circuitry and output; must be connected to low-noise system ground plane |
| 3 | IN+ | Positive input - connects to bus-voltage side of sense resistor in high-side config; load side in low-side config |
| 4 | IN– | Negative input - connects to load side of sense resistor in high-side config; ground side in low-side config |
| 5 | VS | Power supply - accepts 2.7 V to 5.5 V; bypass capacitor (0.1 µF) required between VS and GND for stability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 | Qualified for –40°C to +125°C ambient operation - meets thermal requirements for under-hood and powertrain applications |
| Rail-to-rail output | Swings to within 30 mV of VS and 0.5 mV of GND - preserves >98% of 3.3 V ADC full-scale range |
| Matched gain network | Integrated 50 V/V resistor ratio - eliminates external component mismatch and reduces gain error to ±1% max over temperature |
| Functional safety support | Documentation available for ISO 26262 ASIL-B system-level analysis - accelerates FMEDA and safety case development |
| High CMRR | 84 dB min (100 dB typ) - rejects noise from 12 V/24 V bus transients during high-side sensing in noisy automotive environments |
Applications
| Motor Control | Battery Monitoring |
|---|---|
Use Scenario: Real-time phase current sensing in 3-phase inverter for electric power steering (EPS) and HVAC blower motors. IC Role / Device Role / Timing Role: High-side current-shunt monitor providing isolated, low-latency analog feedback to MCU PWM controller. Use Value: 210 kHz bandwidth and 2 V/µs slew rate enable accurate capture of fast-switching FET currents, improving torque ripple suppression by >15% versus lower-bandwidth alternatives. |
Use Scenario: Cell-level current monitoring in 12 V lead-acid and 48 V Li-ion starter batteries for state-of-charge (SoC) estimation. IC Role / Device Role / Timing Role: Low-side current-sense amplifier interfacing with fuel gauge IC or microcontroller ADC. Use Value: ±500 µV offset at 12 V VCM enables <1% error in 5 A–50 A range using 10 mΩ shunt, supporting precise Coulomb counting over full temperature range. |
| Power Management | Overcurrent Detection |
Use Scenario: Load current monitoring in automotive body control modules (BCM) for adaptive lighting and seat actuation. IC Role / Device Role / Timing Role: Single-supply current sensor feeding analog input of 12-bit MCU ADC with 3.3 V reference. Use Value: Rail-to-rail output swing ensures full ADC code utilization across 0–3.3 V range, maximizing resolution for 100 mA–20 A loads. |
Use Scenario: Fast overcurrent trip detection in DC-DC converter output stage for engine control unit (ECU) power supplies. IC Role / Device Role / Timing Role: High-speed current monitor driving external comparator with <1 µs response to 5× overcurrent events. Use Value: 2 V/µs slew rate and 210 kHz bandwidth reduce fault detection latency to <500 ns, preventing MOSFET destruction during short-circuit events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA180A1QDBVRQ1 | 20 V/V gain (vs. 50 V/V); same package, pinout, and specs otherwise | Better suited for higher-current ranges (>20 A) where lower gain avoids ADC saturation | Select when sensing with ≥5 mΩ shunts or when higher full-scale current range is required |
| INA240A2QDRQ1 | Higher bandwidth (450 kHz), wider common-mode (–4 V to +80 V), but dual-channel and SOIC-8 package | Supports 48 V mild-hybrid systems and bidirectional current sensing; requires PCB redesign | Choose for next-gen 48 V architectures or when enhanced fault robustness and extended voltage range are critical |
Compared with INA180A1QDBVRQ1 and INA240A2QDRQ1, the INA180A2QDBVRQ1 provides optimal balance of gain, bandwidth, and footprint for cost-sensitive 12 V/24 V motor control - delivering 50× amplification without layout change from A1 variant, while avoiding the larger size and higher BOM cost of the INA240 family.
Availability
INA180A2QDBVRQ1 is available at Aetrix Electronics and suitable for motor control, battery monitoring, and power management applications requiring stable component supply across automotive production lifecycles.
Supply support for INA180A2QDBVRQ1 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 solutions.
The INA180-Q1 product line was engineered specifically for AEC-Q100-compliant current sensing in cost-optimized automotive subsystems - emphasizing precision, reliability, and functional safety readiness for body electronics, powertrain, and chassis applications.
FAQ
What is the maximum common-mode voltage supported by the INA180A2QDBVRQ1?
The INA180A2QDBVRQ1 supports a common-mode input voltage range of –0.2 V to +26 V, independent of its 2.7 V to 5.5 V supply voltage. This allows direct high-side sensing on 24 V battery rails without external level-shifting circuitry, and is validated across the full –40°C to +125°C operating temperature range per AEC-Q100 Grade 1 requirements.
Does the INA180A2QDBVRQ1 require external gain-setting resistors?
No, the INA180A2QDBVRQ1 integrates a precision-matched internal resistor network configured for 50 V/V fixed gain. This eliminates external resistor placement, matching tolerances, and temperature drift contributions - resulting in guaranteed ±1% max gain error over temperature and simplifying PCB layout for automotive designs.
What is the typical bandwidth and slew rate of the INA180A2QDBVRQ1?
The INA180A2QDBVRQ1 has a small-signal bandwidth of 210 kHz and a large-signal slew rate of 2 V/µs. These specifications are measured under standard conditions (CLOAD = 10 pF, VS = 5 V) and enable accurate capture of fast current transients in BLDC motor control and rapid overcurrent fault detection in automotive power stages.
Is the INA180A2QDBVRQ1 pin-compatible with other variants in the INA180-Q1 family?
Yes, the INA180A2QDBVRQ1 uses Pinout A of the SOT-23 (DBV) package, matching the pin configuration of all INA180x-Q1 single-channel variants (A1/A2/A3/A4). This allows drop-in replacement across gain options without PCB revision - provided the application's gain requirement and bandwidth tolerance align with the selected variant.
What functional safety documentation is available for the INA180A2QDBVRQ1?
Texas Instruments provides functional safety documentation for the INA180A2QDBVRQ1 to support ISO 26262 ASIL-B system-level design, including failure mode analysis, FIT rate data, and safety manual guidance. This documentation is accessible through TI's official product folder and assists automotive developers in completing FMEDA and safety case artifacts.
INA180A2QDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 210 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 80 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 197µA
- 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:
- SOT-23-5
INA180A2QDBVRQ1 FAQ
1.How can I place an order for INA180A2QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA180A2QDBVRQ1 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 INA180A2QDBVRQ1 reliable?
The price and inventory of INA180A2QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA180A2QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for INA180A2QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA180A2QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA180A2QDBVRQ1?
INA180A2QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA180A2QDBVRQ1 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 INA180A2QDBVRQ1?
For technical support, including INA180A2QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA180A2QDBVRQ1 requirements.
6.How does Aetrix verify that INA180A2QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All INA180A2QDBVRQ1 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 INA180A2QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of INA180A2QDBVRQ1?
All INA180A2QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA180A2QDBVRQ1, 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 INA180A2QDBVRQ1 part is unused and in its original packaging.
Return procedure for INA180A2QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA180A2QDBVRQ1 Tags
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