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Texas Instruments INA180B1QDBVRQ1
- Part No.:
- INA180B1QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
INA180B1QDBVRQ1.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:9,727
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Product details
Overview
INA180B1QDBVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive current-sense amplifier for low- and high-side sensing, featuring 20 V/V fixed gain, –0.2 V to +26 V common-mode input range, ±150 µV max offset at 0 V CM, 350 kHz bandwidth, and 2 V/µs slew rate-used in motor control, battery monitoring, and overcurrent protection circuits.
For engineers reviewing the INA180B1QDBVRQ1 datasheet, INA180B1QDBVRQ1 pinout, INA180B1QDBVRQ1 application, or INA180B1QDBVRQ1 equivalent, this page delivers verified technical context, pin-level design meaning, automotive-grade performance boundaries, and real-world substitution guidance aligned with TI's official SLYS017D specification.
Technical Context
The INA180B1QDBVRQ1 implements a precision current-shunt monitor architecture with integrated matched resistor gain network (20 V/V), enabling accurate voltage drop measurement across sense resistors independent of supply voltage. Its input stage supports rail-to-rail common-mode operation from –0.2 V to +26 V while powered from 2.7 V to 5.5 V.
It delivers 350 kHz small-signal bandwidth and 2 V/µs large-signal slew rate for fast transient response in motor control and fault detection. Offset drift is limited to 1 µV/°C, and gain error remains within ±1% across –40°C to +125°C, meeting functional safety system design requirements per TI documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V fixed-enables direct scaling of 10 mV sense voltage to 200 mV output, simplifying ADC interface without external gain stages. |
| Common-mode range | –0.2 V to +26 V-supports high-side sensing on 12 V/24 V automotive buses and low-side sensing near ground, even when VS = 3.3 V. |
| Offset voltage | ±150 µV max at VCM = 0 V-ensures ≤1.5 mV error at 10 mV sense voltage, critical for accurate low-current detection. |
| Bandwidth | 350 kHz-captures rapid current transients in BLDC motor commutation or short-circuit events before protection triggers. |
| Quiescent current | 260 µA max-minimizes power loss in always-on battery monitoring systems with extended sleep modes. |
| Supply voltage | 2.7 V to 5.5 V-compatible with standard automotive 3.3 V and 5 V rails, eliminating need for dedicated LDO. |
| ESD rating | HBM ±3000 V, CDM ±1000 V-meets automotive board-level ESD robustness requirements without added protection circuitry. |
Pinout & Package
INA180B1QDBVRQ1 is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained automotive PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Current-sense amplifier positive input | Connect to bus-voltage side of shunt for high-side sensing; to load side for low-side sensing-defines reference point for differential measurement. |
| 2 (GND) | Analog ground | Reference node for internal biasing and output swing; must be tied to system analog ground with low-impedance path to minimize noise coupling. |
| 3 (IN–) | Current-sense amplifier negative input | Connect to load side of shunt for high-side sensing; to ground side for low-side sensing-completes differential input pair with IN+. |
| 4 (OUT) | Analog output | Provides rail-to-rail voltage output proportional to sensed current; drives ADC inputs or comparator thresholds directly. |
| 5 (VS) | Power supply | Accepts 2.7 V–5.5 V single supply; powers internal amplifiers and gain network-decoupling with 0.1 µF capacitor required at pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation-enables deployment in engine bay, transmission, and ADAS modules without derating. |
| Integrated 20 V/V gain network | Matched on-die resistors minimize gain error (±1% max) and temperature drift (<20 ppm/°C)-eliminates external resistor matching and layout sensitivity. |
| Rail-to-rail output swing | Swings within 30 mV of VS and 500 µV of GND-maximizes dynamic range for 12-bit ADCs operating on 3.3 V supplies. |
| Functional safety documentation support | TI provides FIT rate data, failure mode analysis, and diagnostic coverage guidance-reduces development effort for ISO 26262 ASIL-B system integration. |
| Low quiescent current | 260 µA max enables continuous current monitoring in always-on vehicle networks (e.g., LIN wake-up, CAN FD partial networking) without battery drain concerns. |
Applications
| Motor Control | Battery Monitoring |
|---|---|
Use Scenario: Real-time phase current sensing in 3-phase BLDC motor drivers for electric power steering (EPS) and HVAC blowers. IC Role / Device Role / Timing Role: High-side current-shunt monitor providing isolated, low-latency feedback to MCU PWM controller. Use Value: 350 kHz bandwidth captures commutation transients; ±150 µV offset ensures <1% error at stall current, improving torque accuracy and thermal management. |
Use Scenario: Continuous current/voltage monitoring of 12 V lead-acid or 48 V Li-ion traction batteries in start-stop systems and hybrid architectures. IC Role / Device Role / Timing Role: Low-side bidirectional current sensor interfacing to battery management MCU via 12-bit SAR ADC. Use Value: –0.2 V to +26 V common-mode range accommodates reverse-polarity protection and load dump transients; 260 µA IQ extends battery standby life. |
| Power Management | Overcurrent Detection |
Use Scenario: Input current supervision in automotive DC-DC converters (e.g., 12 V → 3.3 V PMICs) for adaptive load shedding and thermal derating. IC Role / Device Role / Timing Role: High-side current monitor feeding analog comparator for fast overcurrent flag generation. Use Value: 2 V/µs slew rate ensures sub-microsecond response to short-circuit events; 20 V/V gain enables precise threshold setting at comparator input. |
Use Scenario: Fault detection in lighting control modules (headlamps, matrix LEDs) where >5 A inrush or short-circuit must trigger immediate shutdown. IC Role / Device Role / Timing Role: Low-side current sense amplifier driving window comparator for programmable trip levels. Use Value: ±1% gain error guarantees consistent trip point across temperature; AEC-Q100 qualification ensures reliability under vibration and thermal cycling. |
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 | Same 20 V/V gain and SOT-23 package, but uses Pinout A (OUT on pin 1, IN+ on pin 3) vs. B1's Pinout B (OUT on pin 4, IN+ on pin 1). | Requires PCB layout revision-pin 1 and pin 4 functions swapped; not drop-in compatible without trace modification. | Select only if legacy design uses Pinout A; verify routing compatibility before substitution. |
| INA240A1QDRQ1 | Higher precision: ±20 µV offset, 10 ppm/°C drift, 4 V/µs slew rate; wider CM range (–4 V to +80 V); 8-pin SOIC package. | Targets ASIL-C systems requiring tighter accuracy; larger footprint and higher cost-overqualified for basic Grade 1 monitoring. | Choose when ±0.5% total error budget or 80 V bus compliance is mandatory; avoid for cost-sensitive EPS or lighting modules. |
Compared with INA180A1QDBVRQ1, the INA180B1QDBVRQ1 offers identical electrical performance but requires different PCB layout due to inverted pin mapping; compared with INA240A1QDRQ1, it trades precision and voltage range for lower cost and smaller size-making it optimal for volume automotive subsystems where Grade 1 compliance and 26 V operation suffice.
Availability
INA180B1QDBVRQ1 is available at Aetrix Electronics and suitable for motor control, battery monitoring, and overcurrent detection applications requiring stable component supply across automotive production lifecycles.
Supply support for INA180B1QDBVRQ1 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 INA180-Q1 family was designed specifically for cost-optimized, AEC-Q100-compliant current sensing in automotive body electronics, chassis systems, and electrified powertrains-emphasizing robustness, precision, and ease of integration.
FAQ
What is the pin configuration difference between INA180B1QDBVRQ1 and INA180A1QDBVRQ1?
The INA180B1QDBVRQ1 uses Pinout B: pin 1 = IN+, pin 2 = GND, pin 3 = IN–, pin 4 = OUT, pin 5 = VS. The INA180A1QDBVRQ1 uses Pinout A: pin 1 = OUT, pin 2 = GND, pin 3 = IN+, pin 4 = IN–, pin 5 = VS. This inversion means direct substitution requires PCB trace rework-no shared footprint. Both share identical electrical specs and SOT-23 (DBV) packaging.
Does INA180B1QDBVRQ1 support high-side sensing on a 24 V automotive bus?
Yes. The INA180B1QDBVRQ1 supports common-mode input voltages up to +26 V, making it fully compatible with 24 V nominal automotive buses including load dump transients. It operates from a separate 2.7 V–5.5 V supply, so VS can remain at 3.3 V or 5 V while sensing across the 24 V rail-no level-shifting circuitry needed.
What is the maximum achievable accuracy of INA180B1QDBVRQ1 in a typical automotive current-sense application?
In a typical application with VCM = 12 V and VSENSE = 10 mV, the INA180B1QDBVRQ1 delivers ±500 µV max offset, ±1% max gain error, and 1 µV/°C drift. Combined, this yields ≤1.5% total error over –40°C to +125°C-sufficient for ASIL-B motor control and battery monitoring where absolute precision is secondary to reliability and cost.
Can INA180B1QDBVRQ1 drive a 10 kΩ load directly into an ADC input?
Yes. The INA180B1QDBVRQ1 specifies rail-to-rail output swing with ≤30 mV headroom to VS and ≤500 µV to GND when driving 10 kΩ loads. Its output impedance remains below 1 Ω up to 100 kHz, ensuring minimal settling error and full-scale fidelity for 12-bit ADCs sampling at ≤100 kSPS without external buffering.
Is functional safety documentation available for INA180B1QDBVRQ1?
Yes. Texas Instruments provides functional safety documentation-including FIT rate calculation, failure mode effects analysis (FMEA), and diagnostic coverage metrics-for the INA180-Q1 family. This enables systematic integration into ISO 26262-compliant systems up to ASIL B, supporting safety goals related to overcurrent protection and motor control integrity.
INA180B1QDBVRQ1 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:
- -
- -3db Bandwidth:
- 350 kHz
- 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
INA180B1QDBVRQ1 FAQ
1.How can I place an order for INA180B1QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA180B1QDBVRQ1 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 INA180B1QDBVRQ1 reliable?
The price and inventory of INA180B1QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA180B1QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for INA180B1QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA180B1QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA180B1QDBVRQ1?
INA180B1QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA180B1QDBVRQ1 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 INA180B1QDBVRQ1?
For technical support, including INA180B1QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA180B1QDBVRQ1 requirements.
6.How does Aetrix verify that INA180B1QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All INA180B1QDBVRQ1 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 INA180B1QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of INA180B1QDBVRQ1?
All INA180B1QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA180B1QDBVRQ1, 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 INA180B1QDBVRQ1 part is unused and in its original packaging.
Return procedure for INA180B1QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA180B1QDBVRQ1 Tags
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