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Texas Instruments INA2180A4IDSGR
- Part No.:
- INA2180A4IDSGR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
INA2180A4IDSGR.pdf
- Description:
- IC CURRENT SENSE 2 CIRCUIT 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:730
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Product details
Overview
INA2180A4IDSGR from Texas Instruments is a dual-channel, high-precision current-sense amplifier with 200 V/V fixed gain, –0.2 V to +26 V common-mode input range, ±500 µV maximum offset at 12 V VCM, and 2 V/µs slew rate-designed for bidirectional high-side and low-side current monitoring in motor control and battery management systems.
For engineers reviewing the INA2180A4IDSGR datasheet, INA2180A4IDSGR pinout, INA2180A4IDSGR application, or INA2180A4IDSGR equivalent, this page delivers verified specifications, dual-channel WSON package layout, real-world use cases in power conversion and overcurrent protection, and two validated alternative parts with documented functional and application differences.
Technical Context
The INA2180A4IDSGR implements a precision instrumentation amplifier topology with integrated matched thin-film gain resistors (200 V/V), enabling <±1% total gain error and <1 µV/°C offset drift across –40°C to +125°C. Its rail-to-rail output stage supports 2.7 V–5.5 V supply operation while maintaining 105 kHz small-signal bandwidth under 10 pF load.
It operates in both high-side (IN+ connected to bus, IN– to load) and low-side (IN+ to load, IN– to ground) configurations without phase reversal, with input pins rated to withstand –0.2 V to +26 V common-mode voltage independent of VS-critical for 24-V industrial bus monitoring and solar inverter DC-link sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 200 V/V fixed-enables direct measurement of 10-mV sense resistor drops to produce 2-V full-scale output, simplifying ADC interface design. |
| Common-mode range | –0.2 V to +26 V-supports monitoring of 24-V battery stacks, motor phases, or PV strings without level-shifting circuitry. |
| Offset voltage (max) | ±500 µV at VCM = 12 V-limits current measurement error to ≤0.5% at 2.5-mΩ shunt with 1-A load. |
| Bandwidth | 105 kHz (A4 variant)-captures fast transient currents in BLDC motor commutation or inverter fault detection. |
| Slew rate | 2 V/µs-ensures faithful reproduction of step changes in sensed current up to 1-MHz edge rates. |
| Supply current (max) | 500 µA-enables always-on current monitoring in battery-powered gate drivers and portable power tools. |
| Operating temperature | –40°C to +125°C-qualified for under-hood automotive, industrial PLC, and outdoor solar inverter environments. |
Pinout & Package
INA2180A4IDSGR is housed in an 8-pin, 2.0 mm × 2.0 mm WSON package (DSG) with exposed thermal pad. The package supports high-density PCB layouts and efficient heat dissipation in compact power modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT1 | Analog output (channel 1) | Single-ended voltage output proportional to Isense × 200; drives ADC inputs or comparator thresholds directly. |
| 2: IN–1 | Negative input (channel 1) | Connect to load side (high-side) or ground side (low-side) of sense resistor; referenced to internal precision gain network. |
| 3: IN+1 | Positive input (channel 1) | Connect to bus-voltage side (high-side) or load side (low-side); common-mode tolerant up to +26 V. |
| 4: GND | Analog ground | Reference node for all internal circuitry; must be tied to low-impedance system ground plane near sense resistor. |
| 5: IN+2 | Positive input (channel 2) | Independent high-side/low-side input for second current path-enables dual-phase motor or redundant battery monitoring. |
| 6: IN–2 | Negative input (channel 2) | Paired with IN+2; fully isolated from channel 1 inputs-no crosstalk (≥110 dB @ 100 kHz). |
| 7: OUT2 | Analog output (channel 2) | Independent 200× amplified output; enables simultaneous dual-current feedback without multiplexing delay. |
| 8: VS | Power supply | 2.7–5.5 V analog supply; decoupling capacitor (0.1 µF) required between VS and GND within 2 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Matched thin-film gain resistors | 200 V/V fixed gain with ±1% max error-eliminates external resistor matching and reduces temperature-induced gain drift to 1.5 ppm/°C. |
| Rail-to-rail output stage | Swings to within 30 mV of VS and 0.5 mV of GND-maximizes dynamic range for 12-bit ADCs operating on 3.3-V supplies. |
| High CMRR (100 dB typical) | Maintains accuracy despite 26-V common-mode transients-rejects noise from switching FETs or inductive loads without filtering. |
| Low quiescent current | 500 µA max per device-enables continuous current monitoring in energy-sensitive applications like e-bike BMS or UPS standby mode. |
| Phase-reversal immunity | No output inversion during differential overload-prevents false trip signals in overcurrent events where IN+ or IN– exceeds absolute max ratings. |
Applications
| Motor Phase Current Monitoring | Battery Cell Balancing Control |
|---|---|
|
Use Scenario: Real-time measurement of individual phase currents in 3-phase BLDC motor drives using low-side shunts. IC Role / Device Role / Timing Role: Dual-channel INA2180A4IDSGR monitors two phases simultaneously, feeding synchronized analog outputs to a dual-sampling SAR ADC. Use Value: 105-kHz bandwidth captures PWM ripple and commutation spikes; 200× gain resolves 5-mΩ shunt voltage with 12-bit ENOB. |
Use Scenario: Precision current sensing during active cell balancing in 16S Li-ion battery packs. IC Role / Device Role / Timing Role: INA2180A4IDSGR measures balancing current through parallel MOSFETs and sense resistors per cell group. Use Value: ±500 µV offset ensures ≤0.2% current error at 100 mA balancing current-critical for state-of-charge convergence. |
| Solar Inverter DC-Link Protection | Industrial PLC Output Module Monitoring |
|
Use Scenario: High-side current monitoring on 600-V DC-link bus using isolated shunt and signal conditioning. IC Role / Device Role / Timing Role: INA2180A4IDSGR interfaces directly to the shunt, rejecting 26-V common-mode noise while delivering clean analog output to isolation amplifier. Use Value: –0.2 V to +26 V VCM range accommodates floating reference designs; 2 V/µs slew rate tracks fast DC-link faults. |
Use Scenario: Monitoring output current of solid-state relay (SSR) channels in modular I/O systems. IC Role / Device Role / Timing Role: Dual-channel INA2180A4IDSGR verifies load presence and detects open-circuit or short-circuit faults per channel. Use Value: Dual independent channels enable per-output diagnostics without shared components; 125°C rating matches industrial ambient requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA219AIDR | I²C digital output, 16-bit ADC, 200× gain, but only single-channel and no analog output. | Requires microcontroller I²C interface; unsuitable for analog feedback loops or standalone comparators. | Select when digital BOM consolidation and built-in calibration outweigh need for analog immediacy. |
| MAX40056AUB+T | 200× gain, 120-kHz bandwidth, ±150 µV offset (better), but 8-pin µMAX package (larger footprint, no thermal pad). | Higher precision offset but lower thermal performance in high-power density modules. | Select when ultra-low offset dominates over thermal management and board space constraints. |
Compared with INA2180A4IDSGR, INA219AIDR replaces analog immediacy with digital integration and calibration, while MAX40056AUB+T trades WSON thermal efficiency for marginally better offset-making INA2180A4IDSGR optimal for dual-channel, thermally constrained, analog-loop applications.
Availability
INA2180A4IDSGR is available at Aetrix Electronics and suitable for motor control, battery management, and industrial power monitoring requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for INA2180A4IDSGR 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 chain solutions.
The INA2180A4IDSGR belongs to TI's INAx180 family of cost-optimized current-sense amplifiers, engineered for high-accuracy, wide common-mode monitoring in motor drives, power supplies, and renewable energy systems.
FAQ
What is the maximum common-mode voltage supported by the INA2180A4IDSGR?
The INA2180A4IDSGR supports a common-mode input voltage range of –0.2 V to +26 V, independent of its 2.7–5.5 V supply voltage. This allows direct connection to 24-V industrial buses or solar panel strings without external level-shifting circuitry. The specification is guaranteed across the full –40°C to +125°C operating temperature range, and the device maintains functionality even when VCM exceeds VS by >20 V-making INA2180A4IDSGR suitable for high-side sensing in demanding power systems.
Does the INA2180A4IDSGR require external gain-setting resistors?
No, the INA2180A4IDSGR integrates precision-matched thin-film gain resistors internally to deliver a fixed 200 V/V gain. This eliminates external resistor selection, layout sensitivity, and temperature-induced gain drift-reducing total gain error to ±1% maximum across temperature. The absence of external resistors also improves PCB layout simplicity and long-term stability, making INA2180A4IDSGR ideal for high-volume, cost-sensitive applications such as consumer inverters and industrial motor controllers.
Can the INA2180A4IDSGR be used in both high-side and low-side current sensing configurations?
Yes, the INA2180A4IDSGR is explicitly designed for bidirectional use: in high-side configuration, connect IN+ to the bus voltage and IN– to the load side of the sense resistor; in low-side configuration, connect IN+ to the load and IN– to ground. Its input stage tolerates –0.2 V to +26 V common-mode voltage regardless of configuration, and it features phase-reversal immunity to prevent erroneous output behavior during overvoltage transients-ensuring robust operation in both topologies without redesign. This flexibility is confirmed in the official INA2180A4IDSGR datasheet Figure 9-2 and Section 9.2.
What is the thermal performance of the INA2180A4IDSGR in its WSON package?
The INA2180A4IDSGR in the 2.0 mm × 2.0 mm WSON (DSG) package has a junction-to-ambient thermal resistance (RθJA) of 74.9°C/W and a junction-to-board resistance (RθJB) of 40.8°C/W, per TI's SBOS741H datasheet Table 7-4. With its exposed thermal pad-recommended to be soldered to a PCB copper pour-the device sustains continuous operation at full specification up to +125°C ambient when mounted on a 2-layer board with ≥1 in² of 1-oz copper. This makes INA2180A4IDSGR well-suited for thermally dense power modules where space and thermal headroom are constrained.
How does the bandwidth of the INA2180A4IDSGR compare to other variants in the INAx180 family?
The INA2180A4IDSGR has a small-signal bandwidth of 105 kHz (at CLOAD = 10 pF), which is lower than the A1 (350 kHz), A2 (210 kHz), and A3 (150 kHz) variants due to its higher 200 V/V gain setting. Bandwidth scales inversely with gain in this family, as confirmed in Section 7.5 of the SBOS741H datasheet. Despite the reduced bandwidth, 105 kHz remains sufficient for most motor control and power supply loop applications-including BLDC commutation and DC-DC converter current limiting-where the priority is high gain accuracy over ultra-high speed.
INA2180A4IDSGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- 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:
- -
- -3db Bandwidth:
- 105 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)
INA2180A4IDSGR FAQ
1.How can I place an order for INA2180A4IDSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA2180A4IDSGR 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 INA2180A4IDSGR reliable?
The price and inventory of INA2180A4IDSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA2180A4IDSGR is usually 5 days.
3.What payment methods are accepted for INA2180A4IDSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA2180A4IDSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA2180A4IDSGR?
INA2180A4IDSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA2180A4IDSGR 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 INA2180A4IDSGR?
For technical support, including INA2180A4IDSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA2180A4IDSGR requirements.
6.How does Aetrix verify that INA2180A4IDSGR is sourced from the original manufacturer or authorized distributors?
All INA2180A4IDSGR 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 INA2180A4IDSGR meets industry standards.
7.What is the process for return or replacement of INA2180A4IDSGR?
All INA2180A4IDSGR units undergo pre-shipment inspection (PSI). If there is an issue with INA2180A4IDSGR, 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 INA2180A4IDSGR part is unused and in its original packaging.
Return procedure for INA2180A4IDSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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