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Texas Instruments INA2180A2QDGKRQ1
- Part No.:
- INA2180A2QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA2180A2QDGKRQ1.pdf
- Description:
- IC CURR SENSE 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,212
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Product details
Overview
INA2180A2QDGKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 dual-channel automotive current-sense amplifier with 50 V/V fixed gain, –0.2 V to +26 V common-mode input range, ±500 µV max offset at 12 V VCM, 210 kHz bandwidth, and 2 V/µs slew rate-used for high-accuracy motor control and battery monitoring in 12 V/24 V vehicle subsystems.
For engineers reviewing the INA2180A2QDGKRQ1 datasheet, INA2180A2QDGKRQ1 pinout, INA2180A2QDGKRQ1 application, or INA2180A2QDGKRQ1 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, automotive-grade application mappings, and two confirmed alternative parts with functional and packaging differences.
Technical Context
The INA2180A2QDGKRQ1 implements a precision current-shunt monitor architecture with matched internal gain resistors (50 V/V), enabling accurate sensing across –0.2 V to +26 V common-mode voltages independent of its 2.7–5.5 V supply. Its dual-channel layout supports simultaneous high-side and low-side measurements without crosstalk degradation (≥110 dB channel separation at 100 kHz).
It features rail-to-rail output swing (within 30 mV of VS and 0.5 mV of GND), 1-µV/°C max offset drift, ±1% max gain error over –40°C to +125°C, and functional safety documentation support-making it suitable for ASIL-B–aligned powertrain and body electronics where signal integrity and thermal stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V fixed-enables direct scaling of 20 mΩ shunt voltage (e.g., 1 A → 1 V output) without external resistors. |
| Common-mode range | –0.2 V to +26 V-supports bidirectional sensing in 24 V battery systems and withstands load-dump transients. |
| Bandwidth | 210 kHz-captures fast current transients in BLDC motor commutation and short-circuit detection. |
| Offset voltage | ±500 µV max at VCM = 12 V-limits measurement error to ≤10 mA on 50 mΩ shunt at full scale. |
| Supply current | 500 µA max-enables always-on monitoring in low-power body control modules without excessive quiescent drain. |
| Output swing | Within 30 mV of VS and 0.5 mV of GND-maximizes dynamic range when interfacing with 3.3 V ADCs. |
| ESD rating | HBM ±3 kV, CDM ±1 kV-meets automotive manufacturing ESD robustness requirements per AEC-Q100. |
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 (A1/A3/A4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Analog output | Channel 1 voltage output-drives ADC or comparator; rail-to-rail swing enables full utilization of 3.3 V reference. |
| IN–1 | Analog input | Channel 1 negative sense input-connects to load side (high-side) or ground side (low-side) of shunt resistor. |
| IN+1 | Analog input | Channel 1 positive sense input-connects to bus side (high-side) or load side (low-side) of shunt resistor. |
| GND | Analog ground | Reference return for both channels-must be tied to PCB power ground plane with low-inductance path. |
| IN+2 | Analog input | Channel 2 positive sense input-enables independent current monitoring of second subsystem (e.g., HVAC + lighting). |
| IN–2 | Analog input | Channel 2 negative sense input-supports differential sensing with separate shunt placement per channel. |
| OUT2 | Analog output | Channel 2 voltage output-fully isolated from OUT1; >110 dB channel separation prevents cross-talk in multi-load systems. |
| VS | Power supply | 2.7–5.5 V analog supply-decoupled with 0.1 µF ceramic capacitor placed <1 mm from pin per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation-ensures reliability in engine bay and transmission control units. |
| Matched internal gain resistors | 50 V/V tolerance ≤±1%-eliminates external resistor matching errors and reduces board space vs. discrete solutions. |
| Rail-to-rail output stage | Swing within 30 mV of VS and 0.5 mV of GND-preserves ≥98% of 3.3 V ADC input range for maximum resolution. |
| Functional safety documentation | FMEA reports and FIT data provided-accelerates ISO 26262 ASIL-B system-level safety case development. |
| Low quiescent current | 500 µA max-enables continuous current monitoring in always-on domains (e.g., battery disconnect monitoring) without compromising sleep mode efficiency. |
Applications
| Motor Control | Battery Monitoring |
|---|---|
Use Scenario: Real-time phase current sensing in 12 V BLDC fans and EPS assist motors. IC Role / Device Role / Timing Role: Dual-channel high-side current monitor providing synchronized sampling of two motor phases. Use Value: 210 kHz bandwidth captures PWM ripple; 50 V/V gain scales 10 mΩ shunt output to 0.5–3.0 V for 12-bit ADC digitization. |
Use Scenario: Bidirectional current measurement in 12 V lead-acid or LiFePO₄ starter batteries. IC Role / Device Role / Timing Role: Low-side shunt amplifier with rail-to-rail output feeding fuel gauge MCU ADC. Use Value: ±500 µV offset enables ±5 A measurement accuracy on 20 mΩ shunt; 2 V/µs slew rate detects fuse blow events in <5 µs. |
| Power Management | Overcurrent Detection |
Use Scenario: Load current supervision in automotive DC-DC converters and power distribution units. IC Role / Device Role / Timing Role: High-side current sense for input rail monitoring and efficiency calculation. Use Value: –0.2 V to +26 V common-mode range tolerates 24 V input transients while powered from 3.3 V LDO; 1% gain error ensures ±1% power reporting accuracy. |
Use Scenario: Fast-trip overcurrent protection in seat heater and window lift circuits. IC Role / Device Role / Timing Role: Dual-channel comparator interface-OUT1/OUT2 drive external comparators for independent channel fault signaling. Use Value: 2 V/µs slew rate ensures response to 100 A/s di/dt events within 100 ns; 500 µA supply enables integration into compact safety-critical modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A2QDRQ1 | Higher bandwidth (400 kHz), wider common-mode (–4 V to +80 V), higher quiescent current (1.8 mA) | Better suited for 48 V mild-hybrid systems and high-di/dt traction inverters | Select when sensing >26 V rails or requiring faster transient response; requires PCB layout revision due to SOIC-8 footprint. |
| MAX40056ATA+T | Single-channel, 100 V/V gain, ±125 µV offset (typ), 2.7 V to 5.5 V supply, 8-pin TDFN | Optimized for ultra-low-offset precision in battery cell monitoring | Choose for single-channel, lowest-offset requirement (<±200 µV max); not pin-compatible-requires new layout and routing. |
Compared with INA2180A2QDGKRQ1, INA240A2QDRQ1 offers extended voltage range and speed at higher power cost, while MAX40056ATA+T delivers superior offset performance in a smaller package but lacks dual-channel integration-making INA2180A2QDGKRQ1 optimal for cost-sensitive, space-constrained dual-load monitoring in 12/24 V automotive domains.
Availability
INA2180A2QDGKRQ1 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 INA2180A2QDGKRQ1 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 delivering analog and embedded processing solutions for automotive, industrial, and personal electronics markets.
The INA2180-Q1 product line targets cost-optimized, AEC-Q100 qualified current sensing in dual-channel automotive subsystems-designed specifically for high-side/low-side flexibility, wide common-mode tolerance, and functional safety readiness.
FAQ
What is the operating temperature range for INA2180A2QDGKRQ1?
The INA2180A2QDGKRQ1 is qualified per AEC-Q100 Grade 1, supporting continuous operation from –40°C to +125°C ambient temperature. This range is validated across all electrical parameters including gain error, offset voltage, and bandwidth-ensuring reliable performance in engine compartment and under-dash automotive environments where thermal stress is extreme.
Does INA2180A2QDGKRQ1 support high-side current sensing?
Yes, INA2180A2QDGKRQ1 supports high-side current sensing with a common-mode input range of –0.2 V to +26 V-fully independent of its 2.7–5.5 V supply voltage. For high-side use, connect IN+ to the bus-voltage side and IN– to the load side of the shunt resistor; the device maintains ±1% gain accuracy and ±500 µV offset even at 12 V VCM.
What is the maximum capacitive load the output of INA2180A2QDGKRQ1 can drive?
The INA2180A2QDGKRQ1 output is stable with up to 1 nF capacitive load without sustained oscillation, as specified in the Electrical Characteristics table. Driving larger capacitances (e.g., long PCB traces or ADC input filters) requires isolation via a series resistor (≥10 Ω) to maintain phase margin and prevent peaking in the step response.
How does the gain option A2 map to the INA2180A2QDGKRQ1 part number?
The "A2" suffix in INA2180A2QDGKRQ1 explicitly denotes the 50 V/V fixed-gain variant within the INA2180-Q1 family. This matches Table 5-1 in the datasheet and is implemented using laser-trimmed internal resistors-ensuring ±1% gain error over temperature without external components. Other variants include A1 (20 V/V), A3 (100 V/V), and A4 (200 V/V).
Is INA2180A2QDGKRQ1 pin-compatible with other INA2180-Q1 variants?
Yes, all INA2180-Q1 variants-including INA2180A1QDGKRQ1, INA2180A2QDGKRQ1, INA2180A3QDGKRQ1, and INA2180A4QDGKRQ1-share identical VSSOP-8 pinout and footprint. Only the internal gain resistor network differs; no PCB redesign is needed when upgrading or downgrading gain options during design-in or validation.
INA2180A2QDGKRQ1 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:
- 210 kHz
- -3db Bandwidth:
- 210 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
INA2180A2QDGKRQ1 FAQ
1.How can I place an order for INA2180A2QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA2180A2QDGKRQ1 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 INA2180A2QDGKRQ1 reliable?
The price and inventory of INA2180A2QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA2180A2QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for INA2180A2QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA2180A2QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA2180A2QDGKRQ1?
INA2180A2QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA2180A2QDGKRQ1 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 INA2180A2QDGKRQ1?
For technical support, including INA2180A2QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA2180A2QDGKRQ1 requirements.
6.How does Aetrix verify that INA2180A2QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA2180A2QDGKRQ1 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 INA2180A2QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of INA2180A2QDGKRQ1?
All INA2180A2QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA2180A2QDGKRQ1, 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 INA2180A2QDGKRQ1 part is unused and in its original packaging.
Return procedure for INA2180A2QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA2180A2QDGKRQ1 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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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MCP6006UT-E/OT
Microchip Technology
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Texas Instruments
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Texas Instruments
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Texas Instruments
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Texas Instruments
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