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Texas Instruments INA2180A1QDGKRQ1
- Part No.:
- INA2180A1QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA2180A1QDGKRQ1.pdf
- Description:
- IC CURR SENSE 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,303
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Product details
Overview
INA2180A1QDGKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 dual-channel automotive current-sense amplifier for high- and low-side sensing, featuring 20 V/V fixed gain, 350 kHz bandwidth, ±150 µV max offset at VCM = 0 V, and –0.2 V to +26 V common-mode input range. It enables precise motor phase current monitoring in 12 V/24 V battery systems with rail-to-rail output swing and 2 V/µs slew rate.
For engineers reviewing the INA2180A1QDGKRQ1 datasheet, INA2180A1QDGKRQ1 pinout, INA2180A1QDGKRQ1 application, or INA2180A1QDGKRQ1 equivalent, key selection criteria include dual-channel integration for multi-phase control, AEC-Q100 qualification for under-hood deployment, guaranteed 1% max gain error over –40°C to +125°C, and compatibility with low-value shunt resistors due to sub-µV/°C drift.
Technical Context
The INA2180A1QDGKRQ1 implements a precision current-sense topology with matched internal gain resistors (20 V/V), enabling accurate RTI voltage measurement across shunts independent of supply voltage. Its proprietary input stage supports common-mode voltages up to 26 V while operating from 2.7–5.5 V, eliminating level-shifting requirements in high-side configurations.
Each channel features independent IN+ and IN− inputs with ±150 µV offset (max) at 0 V common-mode and 1 µV/°C drift, ensuring stable accuracy across automotive temperature extremes. The 350 kHz small-signal bandwidth and 2 V/µs slew rate support real-time detection of fast transient overcurrent events in motor drives and battery protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V fixed - eliminates external resistor matching errors and reduces layout sensitivity in production systems |
| Bandwidth | 350 kHz - supports accurate sensing of PWM-driven motor currents up to ~50 kHz fundamental frequency |
| Offset Voltage | ±150 µV max at VCM = 0 V - enables use of ≤1 mΩ shunts in low-side battery monitoring without significant zero-error impact |
| Common-Mode Range | –0.2 V to +26 V - allows direct connection to 24 V bus rails without external attenuation or isolation |
| Supply Voltage | 2.7 V to 5.5 V - compatible with standard automotive 3.3 V or 5 V MCU domains while sensing higher-voltage power stages |
| Quiescent Current | 500 µA max - supports always-on battery monitoring with minimal parasitic drain in sleep modes |
| Output Swing | VS – 30 mV to GND + 5 mV - delivers full dynamic range to 12-bit ADCs without external biasing |
Pinout & Package
INA2180A1QDGKRQ1 is housed in an 8-pin VSSOP package (3.00 mm × 3.00 mm body size) optimized for thermal performance and PCB space efficiency in automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Analog output | Channel 1 voltage output referenced to GND; drives ADC or comparator directly with rail-to-rail capability |
| 2 (IN−1) | Analog input | Negative input for channel 1; connects to load side of sense resistor in high-side config or ground side in low-side |
| 3 (IN+1) | Analog input | Positive input for channel 1; connects to bus side of sense resistor in high-side or load side in low-side |
| 4 (GND) | Analog ground | Reference return for both channels; must be connected 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-motor control |
| 6 (IN−2) | Analog input | Negative input for channel 2; supports independent current sensing on second motor phase or auxiliary load |
| 7 (OUT2) | Analog output | Channel 2 voltage output; matches OUT1 electrical characteristics for synchronized dual-channel acquisition |
| 8 (VS) | Power supply | Single 2.7–5.5 V analog supply; decoupling capacitor required within 1 mm of pin for stability at 350 kHz BW |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 | Qualified for –40°C to +125°C ambient operation - validated for engine bay and transmission control unit environments |
| Functional Safety-Capable | Documentation available for ISO 26262 ASIL-B system integration - supports diagnostic coverage analysis for current-sense fault detection |
| Matched Gain Resistor Network | 20 V/V fixed gain with ±1% max error - eliminates external resistor tolerance stack-up and thermal drift in production calibration |
| Rail-to-Rail Output | VS – 30 mV to GND + 5 mV swing - maximizes ADC utilization without external level-shifting circuitry |
| Low Offset Drift | 1 µV/°C max - ensures <100 µV total offset variation across full temperature range, critical for consistent overcurrent thresholds |
Applications
| Motor Phase Current Monitoring | Battery Pack Cell Balancing Control |
|---|---|
|
Use Scenario: Real-time measurement of individual phase currents in 3-phase BLDC motors used in EPS and HVAC blowers. IC Role / Device Role / Timing Role: Dual-channel current-sense amplifier providing simultaneous, synchronized analog outputs for two motor phases. Use Value: Enables field-oriented control (FOC) with <1% current measurement error across –40°C to +125°C, reducing torque ripple and improving efficiency. |
Use Scenario: Monitoring charge/discharge current per cell string in 12S Li-ion battery packs for EV auxiliary systems. IC Role / Device Role / Timing Role: High-accuracy dual-channel shunt monitor interfacing with microcontroller ADC for balancing algorithm input. Use Value: Supports ±1 mA current resolution using 1 mΩ shunts, enabling precise state-of-charge estimation and thermal runaway prevention. |
| 12 V/24 V System Power Management | Automotive Lighting Load Diagnostics |
|
Use Scenario: Measuring total current draw in junction boxes supplying infotainment, ADAS, and body control modules. IC Role / Device Role / Timing Role: Low-side current sensor on main power rail with wide common-mode range to tolerate load dump transients. Use Value: Survives 26 V common-mode spikes without saturation, enabling robust short-circuit and overload detection during cold-crank conditions. |
Use Scenario: Detecting open-circuit, short-circuit, and overcurrent faults in LED headlamp and DRL driver modules. IC Role / Device Role / Timing Role: High-bandwidth current monitor feeding comparator-based fault logic for sub-100 µs response. Use Value: 350 kHz bandwidth captures rapid LED turn-on surges, preventing false trips while ensuring <200 µs fault flag assertion for ASIL-B compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | Higher 80 V common-mode range; 120 kHz bandwidth; 500 µV max offset at 12 V VCM | Better suited for 48 V mild-hybrid systems; lower bandwidth limits PWM fidelity in high-speed motor control | Select when sensing >26 V rails is required; avoid if 350 kHz response is critical for fault detection |
| MAX40056ATA+T | Single-channel only; 2.7 V to 5.5 V supply; 300 kHz bandwidth; ±100 µV max offset | Requires two devices for dual-channel function; superior offset but lacks integrated dual configuration | Choose when board space permits discrete implementation and ultra-low offset dominates over integration benefits |
Compared with INA2180A1QDGKRQ1, INA240A1QDRQ1 extends common-mode capability to 80 V at the cost of bandwidth and offset performance, while MAX40056ATA+T offers better DC accuracy in a single-channel form factor-neither provides identical dual-channel integration with 350 kHz response and AEC-Q100 Grade 1 validation in one VSSOP package.
Availability
INA2180A1QDGKRQ1 is available at Aetrix Electronics and suitable for motor control, battery monitoring, and automotive lighting applications requiring stable component supply across extended temperature ranges and AEC-Q100-compliant sourcing.
Supply support for INA2180A1QDGKRQ1 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- and low-side sensing in battery management, motor control, and power distribution systems where precision, reliability, and thermal robustness are essential.
FAQ
What is the maximum common-mode voltage supported by the INA2180A1QDGKRQ1?
The INA2180A1QDGKRQ1 supports a common-mode input voltage range of –0.2 V to +26 V, enabling direct connection to 24 V automotive bus rails without external attenuation. This specification is guaranteed over the full operating temperature range of –40°C to +125°C and is independent of the 2.7–5.5 V supply voltage. Sustained operation above 26 V may cause permanent damage.
Does the INA2180A1QDGKRQ1 require external gain-setting resistors?
No, the INA2180A1QDGKRQ1 integrates a matched internal resistor network configured for 20 V/V fixed gain. This eliminates external resistor placement, matching tolerances, and thermal drift concerns. The A1 suffix explicitly denotes the 20 V/V variant, and no external components are needed to set or calibrate gain-only decoupling capacitors and sense resistors are required for operation.
How does the INA2180A1QDGKRQ1 handle overvoltage on its inputs?
The INA2180A1QDGKRQ1 specifies absolute maximum differential input voltage of ±28 V and common-mode voltage of –0.3 V to +28 V. However, sustained operation between 26 V and 28 V for more than a few minutes may cause permanent damage. For robust design, TI recommends clamping transients above 26 V using external TVS diodes or limiting current to ≤5 mA at each input pin per datasheet guidance.
Is the INA2180A1QDGKRQ1 pin-compatible with other members of the INAx180-Q1 family?
No, the INA2180A1QDGKRQ1 uses an 8-pin VSSOP (DGK) package, while the single-channel INA180A1QDBVRQ1 uses a 5-pin SOT-23 and the quad-channel INA4180A1QPWRQ1 uses a 14-pin TSSOP. Pin functions differ across packages-e.g., GND is pin 4 in DGK but pin 2 in SOT-23-and no pin-to-pin compatibility exists between variants. Layout redesign is required when switching channel count.
What is the functional safety documentation status for the INA2180A1QDGKRQ1?
The INA2180A1QDGKRQ1 is labeled "Functional Safety-Capable" with documentation available to aid ISO 26262 system-level design. This includes failure mode effect analysis (FMEA), diagnostic coverage reports, and safety manual excerpts-but TI does not assign an ASIL rating to the device itself. System integrators must perform their own FMEDA and allocate diagnostics to achieve target ASIL levels such as ASIL-B for motor control or battery monitoring subsystems.
INA2180A1QDGKRQ1 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:
- 350 kHz
- -3db Bandwidth:
- 350 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
INA2180A1QDGKRQ1 FAQ
1.How can I place an order for INA2180A1QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA2180A1QDGKRQ1 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 INA2180A1QDGKRQ1 reliable?
The price and inventory of INA2180A1QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA2180A1QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for INA2180A1QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA2180A1QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA2180A1QDGKRQ1?
INA2180A1QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA2180A1QDGKRQ1 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 INA2180A1QDGKRQ1?
For technical support, including INA2180A1QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA2180A1QDGKRQ1 requirements.
6.How does Aetrix verify that INA2180A1QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA2180A1QDGKRQ1 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 INA2180A1QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of INA2180A1QDGKRQ1?
All INA2180A1QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA2180A1QDGKRQ1, 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 INA2180A1QDGKRQ1 part is unused and in its original packaging.
Return procedure for INA2180A1QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA2180A1QDGKRQ1 Tags
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LM358DT
STMicroelectronics
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Texas Instruments
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Texas Instruments
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Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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Microchip Technology
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Texas Instruments
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Texas Instruments
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Texas Instruments
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