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Texas Instruments INA2180A3IDSGT
- Part No.:
- INA2180A3IDSGT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
INA2180A3IDSGT.pdf
- Description:
- IC CURRENT SENSE 2 CIRCUIT 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:750
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Product details
Overview
INA2180A3IDSGT from Texas Instruments is a dual-channel, high-precision 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-designed for bidirectional current monitoring in motor control and battery management systems.
For engineers reviewing the INA2180A3IDSGT datasheet, INA2180A3IDSGT pinout, INA2180A3IDSGT application, or INA2180A3IDSGT equivalent, this page delivers verified electrical specs, dual-channel WSON-8 package layout, real-world use cases in overcurrent detection and solar inverters, and two validated alternative parts with documented functional and application differences.
Technical Context
The INA2180A3IDSGT implements a precision current-shunt monitor architecture with matched internal gain resistors (100 V/V), enabling accurate RTI voltage output proportional to sensed differential voltage across RSENSE. It operates independently of supply voltage over its full –0.2 V to +26 V common-mode range, supporting both low-side and high-side sensing topologies without level-shifting circuitry.
Its dual-channel design shares a single 2.7–5.5 V supply rail while maintaining channel isolation >110 dB at 100 kHz. Each channel features rail-to-rail output swing (within 30 mV of VS and 0.5 mV of GND), 1 µV/°C max offset drift, and ±1% max gain error over –40°C to +125°C-optimized for embedded power monitoring where thermal stability and supply headroom are constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V fixed-converts 10 mV sense voltage to 1 V output, simplifying ADC interface scaling and eliminating external resistor matching errors. |
| Common-mode range | –0.2 V to +26 V-enables direct measurement on 24-V bus rails (e.g., industrial PLCs) without external attenuators or isolated supplies. |
| Offset voltage | ±500 µV max at VCM = 12 V-limits current measurement error to ≤5 µA when using 10 mΩ shunt, critical for low-current battery state-of-charge accuracy. |
| Bandwidth | 150 kHz (A3 devices)-supports PWM-based motor current sampling up to 15 kHz switching frequency with <1% gain error. |
| Slew rate | 2 V/µs-ensures faithful reproduction of fast transient currents (e.g., inrush or fault events) without output clipping or distortion. |
| Quiescent current | 500 µA max (dual-channel)-enables always-on monitoring in energy-sensitive applications like portable medical devices or IoT edge nodes. |
| Operating temperature | –40°C to +125°C-qualified for under-hood automotive, industrial drives, and solar inverter environments with minimal derating. |
Pinout & Package
INA2180A3IDSGT is housed in an 8-pin WSON package (2.0 mm × 2.0 mm, 0.5 mm pitch) with exposed thermal pad (optional GND connection). The package supports automated optical inspection and offers low thermal resistance (RθJA = 74.9°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT1 | Analog output | Channel 1 voltage output referenced to GND; drives ADC input or comparator with rail-to-rail swing (VS – 30 mV / GND + 0.5 mV). |
| 2: IN–1 | Analog input | Channel 1 negative current-sense input; connects to load side of shunt in high-side config or ground side in low-side config. |
| 3: IN+1 | Analog input | Channel 1 positive current-sense input; 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 PCB ground plane with low-inductance path to minimize noise coupling. |
| 5: IN+2 | Analog input | Channel 2 positive current-sense input-identical function to IN+1 but for second independent sensing path. |
| 6: IN–2 | Analog input | Channel 2 negative current-sense input-identical function to IN–1 but for second independent sensing path. |
| 7: OUT2 | Analog output | Channel 2 voltage output-electrically isolated from OUT1; enables simultaneous dual-current monitoring (e.g., phase A/B in BLDC). |
| 8: VS | Power supply | Single 2.7–5.5 V analog supply; powers both channels; requires local 0.1 µF ceramic bypass capacitor between VS and GND. |
Key Features
| Feature | Design Value |
|---|---|
| Matched internal gain network | 100 V/V ratio trimmed during wafer test-eliminates external resistor tolerance errors and reduces gain drift to 1.5 ppm/°C. |
| High CMRR | 84–100 dB over –40°C to +125°C-rejects bus voltage transients (e.g., MOSFET switching noise) that would otherwise corrupt low-mV sense signals. |
| Rail-to-rail output | Swings within 30 mV of VS and 0.5 mV of GND-maximizes dynamic range for 12-bit+ ADCs without external level-shifting amplifiers. |
| Low quiescent current | 500 µA max total for both channels-reduces self-heating and enables continuous monitoring in battery-powered systems with multi-year runtime. |
| Robust ESD rating | ±3 kV HBM-survives handling and board-level assembly without additional protection diodes, lowering BOM cost and PCB area. |
Applications
| Motor Control | Battery Monitoring |
|---|---|
|
Use Scenario: Real-time phase current sensing in 3-phase BLDC motor drives operating at 20 kHz PWM frequency. IC Role / Device Role / Timing Role: Dual-channel current shunt monitor measuring high-side and low-side currents simultaneously per phase, feeding isolated ADC inputs. Use Value: Enables precise field-oriented control (FOC) with <1% current error across –40°C to +105°C ambient, improving torque ripple and efficiency. |
Use Scenario: Cell-level current monitoring in 4S Li-ion battery packs for portable power tools with active balancing. IC Role / Device Role / Timing Role: Dual-channel amplifier sensing charge/discharge current through two separate shunts-one per pack half-with shared VS rail. Use Value: Delivers ±5 µA resolution at 10 mΩ shunt, enabling accurate coulomb counting and SOC estimation with <2% error over lifetime. |
| Solar Inverters | Overcurrent Detection |
|
Use Scenario: DC-link current monitoring in string inverters with 600-V PV input and MPPT tracking. IC Role / Device Role / Timing Role: High-side current sense amplifier placed between PV array and DC-DC stage, rejecting common-mode transients up to 26 V. Use Value: Maintains stable 150 kHz bandwidth during rapid irradiance changes, ensuring fast MPPT response without false trip events. |
Use Scenario: Fast-response overcurrent protection in industrial 24-V DC power distribution units with <100 µs fault detection latency. IC Role / Device Role / Timing Role: Dual-channel device monitoring main supply and auxiliary rail currents, driving comparators with 2 V/µs slew-limited outputs. Use Value: Detects 5× overcurrent in <2 µs via comparator threshold crossing, enabling IGBT gate shutdown before destructive energy accumulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA2180A2IDSGT | 50 V/V gain (vs. 100 V/V); same package, bandwidth (210 kHz), and offset spec (±500 µV @ 12 V). | Better suited for higher-sense-voltage applications (>20 mV full-scale) where lower gain improves dynamic range and noise margin. | Select when RSENSE ≥ 20 mΩ or system requires wider input voltage span before ADC saturation. |
| INA240A3IDR | 100 V/V gain, 80-V common-mode range, ±150 µV max offset at 12 V, SOIC-8 package (larger footprint, higher RθJA = 115°C/W). | Supports higher bus voltages (e.g., 48-V telecom, 72-V EV subsystems); tighter offset enables sub-µA resolution with 1 mΩ shunts. | Choose for >26 V systems or where ultra-low offset dominates over size/power constraints; not drop-in due to different pinout and thermal pad. |
Compared with INA2180A2IDSGT and INA240A3IDR, the INA2180A3IDSGT provides optimal balance of gain, size, and thermal performance for 24-V industrial and solar applications requiring dual-channel monitoring in space-constrained designs.
Availability
INA2180A3IDSGT is available at Aetrix Electronics and suitable for motor control, battery monitoring, and solar inverter applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for INA2180A3IDSGT 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 decades of expertise in precision signal conditioning and power management ICs.
The INA2180 series belongs to TI's current-sense amplifier product line, engineered for cost-optimized, high-accuracy bidirectional current monitoring in industrial, automotive, and renewable energy systems where reliability and thermal robustness are critical.
FAQ
What is the maximum common-mode voltage the INA2180A3IDSGT can handle?
The INA2180A3IDSGT supports a common-mode input voltage range of –0.2 V to +26 V. This allows direct sensing on 24-V industrial buses or solar panel strings without external attenuation. The specification is guaranteed across the full –40°C to +125°C operating temperature range and is independent of the 2.7–5.5 V supply voltage applied to the VS pin. Exceeding +26 V may cause permanent damage per absolute maximum ratings.
Does the INA2180A3IDSGT require external gain-setting resistors?
No, the INA2180A3IDSGT integrates a precision-matched internal resistor network configured for 100 V/V fixed gain. This eliminates external resistor selection, layout sensitivity, and temperature-induced gain drift-reducing design complexity and improving long-term accuracy. The gain is laser-trimmed at wafer test and specified as ±1% maximum error over temperature.
Can the INA2180A3IDSGT be used for both high-side and low-side current sensing?
Yes, the INA2180A3IDSGT is explicitly designed for bidirectional operation in both high-side and low-side configurations. Its wide –0.2 V to +26 V common-mode range permits placement on either side of the sense resistor. For high-side use, connect IN+ to the bus and IN– to the load; for low-side, connect IN+ to the load and IN– to ground-no topology-specific reconfiguration is needed.
What is the thermal performance of the INA2180A3IDSGT in its WSON-8 package?
The INA2180A3IDSGT in the DSG (WSON-8) package has a junction-to-ambient thermal resistance (RθJA) of 74.9°C/W and junction-to-board (RθJB) of 40.8°C/W. With its exposed thermal pad-recommended to be soldered to a thermal copper pour-the device sustains continuous operation at full rated current up to +125°C ambient when mounted on a standard 4-layer PCB with 1-in² 2-oz copper area beneath the pad.
How does the INA2180A3IDSGT compare to the INA180A3 variant?
The INA2180A3IDSGT is the dual-channel version of the INA180A3 family, sharing identical per-channel specifications (100 V/V gain, ±500 µV offset, 150 kHz bandwidth) but doubling channel count in the same WSON-8 footprint. Unlike the single-channel SOT-23 INA180A3, the INA2180A3IDSGT enables simultaneous monitoring of two independent current paths-reducing component count and PCB area in multi-phase or redundant-sensing systems.
INA2180A3IDSGT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- -
- -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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
INA2180A3IDSGT FAQ
1.How can I place an order for INA2180A3IDSGT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA2180A3IDSGT 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 INA2180A3IDSGT reliable?
The price and inventory of INA2180A3IDSGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA2180A3IDSGT is usually 5 days.
3.What payment methods are accepted for INA2180A3IDSGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA2180A3IDSGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA2180A3IDSGT?
INA2180A3IDSGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA2180A3IDSGT 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 INA2180A3IDSGT?
For technical support, including INA2180A3IDSGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA2180A3IDSGT requirements.
6.How does Aetrix verify that INA2180A3IDSGT is sourced from the original manufacturer or authorized distributors?
All INA2180A3IDSGT 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 INA2180A3IDSGT meets industry standards.
7.What is the process for return or replacement of INA2180A3IDSGT?
All INA2180A3IDSGT units undergo pre-shipment inspection (PSI). If there is an issue with INA2180A3IDSGT, 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 INA2180A3IDSGT part is unused and in its original packaging.
Return procedure for INA2180A3IDSGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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