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Texas Instruments INA2180A3IDSGR
- Part No.:
- INA2180A3IDSGR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
INA2180A3IDSGR.pdf
- Description:
- IC CURRENT SENSE 2 CIRCUIT 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:7,412
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Product details
Overview
INA2180A3IDSGR 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 maximum offset voltage at 12 V VCM, and 150 kHz small-signal bandwidth. It operates from 2.7 V to 5.5 V supply and delivers 2 V/µs slew rate for fast transient response in motor control and battery monitoring circuits.
For engineers reviewing the INA2180A3IDSGR datasheet, INA2180A3IDSGR pinout, INA2180A3IDSGR application, or INA2180A3IDSGR equivalent, this page provides verified pin functions, real-world use cases, confirmed alternatives, thermal performance data, and design-meaning specifications - all validated against TI's SBOS741H production datasheet (July 2022).
Technical Context
The INA2180A3IDSGR implements a matched-resistor gain network for precise 100 V/V amplification, minimizing gain error (±1% max) and temperature drift (1 µV/°C max offset drift). Its input stage supports bidirectional sensing across –0.2 V to +26 V common-mode voltages independent of supply rail, enabling direct connection to high-side bus rails up to 26 V while powered from a low 2.7–5.5 V supply.
Each channel features independent IN+ and IN– inputs with rail-to-rail output swing (within 30 mV of VS and 500 µV of GND), 40 nV/√Hz input-referred voltage noise, and 84–100 dB CMRR over temperature. Channel separation exceeds 100 dB at 10 kHz, ensuring minimal crosstalk in dual-channel measurement systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V fixed - enables direct scaling of 10 mΩ shunt voltage to 1 V per 1 A sensed current, simplifying ADC interface design |
| Common-mode range | –0.2 V to +26 V - supports high-side sensing on 24-V industrial buses without level-shifting circuitry |
| Offset voltage | ±500 µV max at 12 V VCM - limits current measurement error to ≤5 mA when using 10 mΩ shunt at room temperature |
| Bandwidth | 150 kHz - captures PWM switching harmonics up to 15 kHz with <3% amplitude error |
| Slew rate | 2 V/µs - ensures full-scale output transition in ≤1 µs, critical for overcurrent fault detection latency |
| Supply current | 500 µA max - allows dual-channel sensing in battery-powered systems with <1 mW total quiescent power at 5 V |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive and industrial motor drive environments |
Pinout & Package
INA2180A3IDSGR is housed in an 8-pin WSON package (DSG) with 2.00 mm × 2.00 mm body size and exposed thermal pad (optional GND connection). The package supports high-density PCB layouts and efficient heat dissipation (RθJA = 74.9°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Analog output, Channel 1 | Rail-to-rail output referenced to VS and GND; drives ADC or comparator directly without buffering |
| IN–1 | Analog input, Channel 1 negative | Connect to load side of sense resistor in high-side config; to ground side in low-side config |
| IN+1 | Analog input, Channel 1 positive | Connect to bus-voltage side of sense resistor in high-side config; to load side in low-side config |
| GND | Analog ground reference | Single-point return path for both channels; must be tied to system power ground with low-impedance trace |
| IN–2 | Analog input, Channel 2 negative | Independent second channel input; enables simultaneous phase-current sensing in 2-phase motor control |
| IN+2 | Analog input, Channel 2 positive | Paired with IN–2 for second current path; electrically isolated from Channel 1 signal path |
| OUT2 | Analog output, Channel 2 | Separate output for Channel 2; eliminates need for multiplexing in dual-current feedback loops |
| VS | Power supply input | Accepts 2.7–5.5 V; powers both channels from single rail; bypass capacitor required at pin |
Key Features
| Feature | Design Value |
|---|---|
| Matched-resistor gain network | 100 V/V fixed gain with ±1% max error and <20 ppm/°C drift - eliminates external gain-setting resistors and improves long-term stability |
| Wide common-mode input range | –0.2 V to +26 V operation independent of VS - enables direct high-side sensing on 24-V systems without auxiliary supplies |
| Rail-to-rail output swing | Output swings within 30 mV of VS and 500 µV of GND - maximizes dynamic range for 12-bit ADCs operating at 3.3 V or 5 V |
| Low quiescent current | 500 µA max total for both channels - extends battery life in portable test equipment and IoT edge sensors |
| High channel separation | >100 dB at 10 kHz - prevents cross-coupling between motor phase currents in dual-shunt implementations |
Applications
| Motor Control | Battery Monitoring |
|---|---|
Use Scenario: Real-time phase-current sensing in 2-phase BLDC motor drives for field-oriented control (FOC). IC Role / Device Role / Timing Role: Dual-channel current-sense amplifier measuring simultaneous high-side currents on two motor phases with synchronized sampling. Use Value: 150 kHz bandwidth captures PWM edge transients; 100 V/V gain scales 5 mΩ shunt voltage to full-scale ADC range, reducing quantization error by 50% vs. lower-gain alternatives. | Use Scenario: Cell-level current monitoring in 4S lithium-ion battery packs during charge/discharge cycles. IC Role / Device Role / Timing Role: High-side current monitor on main pack output, rejecting common-mode noise from switching regulators and DC-DC converters. Use Value: –0.2 V to +26 V common-mode range accommodates pack voltages up to 16.8 V while maintaining accuracy; ±500 µV offset ensures <10 mA absolute current error at end-of-charge. |
| Power Management | Solar Inverters |
Use Scenario: Input current supervision in industrial DC-DC converter modules with 24-V input rails. IC Role / Device Role / Timing Role: Low-drift, high-CMRR current monitor detecting overcurrent faults before MOSFET failure. Use Value: 84–100 dB CMRR rejects ripple from upstream rectifiers; 2 V/µs slew rate triggers protection within 500 ns of fault onset. | Use Scenario: MPPT controller current sensing on PV string inputs operating at up to 26 V common-mode. IC Role / Device Role / Timing Role: High-side current amplifier interfacing with isolated sigma-delta ADCs in grid-tied inverter front-ends. Use Value: Matched 100 V/V gain eliminates calibration drift across temperature; 40 nV/√Hz noise floor preserves resolution for sub-amp leakage current detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA2180A2IDSGR | 50 V/V gain (vs. 100 V/V); same package, bandwidth (210 kHz), and offset specs | Better suited for higher-value shunts (>20 mΩ) or systems requiring wider dynamic range at lower currents | Select when 50 V/V scaling better matches ADC full-scale or when lower gain reduces saturation risk in high-current transients |
| INA240A3IDR | 100 V/V gain, but wider –4 V to +80 V common-mode range; higher quiescent current (1.1 mA); SOIC-8 package | Required for >26 V bus sensing (e.g., 48-V telecom, 72-V EV subsystems); less space-constrained layouts | Choose for 48-V+ systems or where enhanced ESD robustness (±4 kV HBM) and extended CM range outweigh WSON size advantage |
Compared with INA2180A2IDSGR and INA240A3IDR, the INA2180A3IDSGR offers optimal trade-off of gain precision, compact WSON footprint, and 26-V capability for cost-sensitive industrial and automotive 12–24 V applications - without sacrificing bandwidth or thermal performance.
Availability
INA2180A3IDSGR is available at Aetrix Electronics and suitable for motor control, battery monitoring, and solar inverter designs requiring stable component supply, consistent parametric performance across production lots, and long-term industrial-grade availability.
Supply support for INA2180A3IDSGR 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 INA2180A3IDSGR belongs to TI's INAx180 family of cost-optimized current-sense amplifiers, designed specifically for accurate, low-power, high-common-mode current measurement in motor drives, power supplies, and energy systems.
FAQ
What is the maximum common-mode voltage supported by the INA2180A3IDSGR?
The INA2180A3IDSGR 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 high-side sensing on 24-V industrial buses without external level-shifting circuitry. The specification is guaranteed across the full –40°C to +125°C operating temperature range and is validated per TI's SBOS741H datasheet Section 7.3.
Does the INA2180A3IDSGR require external gain-setting resistors?
No, the INA2180A3IDSGR integrates a precision-matched internal resistor network configured for 100 V/V fixed gain. This eliminates external components, reduces board area, and improves temperature stability - gain error remains within ±1% over temperature, with drift below 20 ppm/°C. The architecture is detailed in Section 3 and Figure 8-2 of the INA2180A3IDSGR datasheet.
What is the typical bandwidth and slew rate of the INA2180A3IDSGR?
The INA2180A3IDSGR has a small-signal bandwidth of 150 kHz (for A3 devices) and a large-signal slew rate of 2 V/µs, as specified in Section 7.5 of the SBOS741H datasheet. These values enable accurate capture of fast current transients in motor control and overcurrent protection applications, with step response settling within 1 µs for full-scale output transitions.
How does the INA2180A3IDSGR handle thermal dissipation in the WSON package?
The INA2180A3IDSGR in the DSG (WSON-8) package has a junction-to-ambient thermal resistance (RθJA) of 74.9°C/W, measured with standard JEDEC PCB layout. Its exposed thermal pad may be left floating or connected to GND for improved heat transfer. At maximum 500 µA supply current and 5.5 V supply, power dissipation stays below 2.8 mW - resulting in negligible self-heating under normal operation.
Can the INA2180A3IDSGR be used for bidirectional current sensing?
Yes, the INA2180A3IDSGR supports bidirectional current sensing when the sense resistor is placed in a low-side configuration with its IN+ and IN– pins referenced appropriately. Its rail-to-rail output (swinging within 30 mV of VS and 500 µV of GND) and symmetric input structure allow positive and negative current polarity detection - provided the output is interfaced with a bipolar-input ADC or level-shifting circuitry for unipolar systems.
INA2180A3IDSGR 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:
- 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)
INA2180A3IDSGR FAQ
1.How can I place an order for INA2180A3IDSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA2180A3IDSGR 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 INA2180A3IDSGR reliable?
The price and inventory of INA2180A3IDSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA2180A3IDSGR is usually 5 days.
3.What payment methods are accepted for INA2180A3IDSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA2180A3IDSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA2180A3IDSGR?
INA2180A3IDSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA2180A3IDSGR 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 INA2180A3IDSGR?
For technical support, including INA2180A3IDSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA2180A3IDSGR requirements.
6.How does Aetrix verify that INA2180A3IDSGR is sourced from the original manufacturer or authorized distributors?
All INA2180A3IDSGR 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 INA2180A3IDSGR meets industry standards.
7.What is the process for return or replacement of INA2180A3IDSGR?
All INA2180A3IDSGR units undergo pre-shipment inspection (PSI). If there is an issue with INA2180A3IDSGR, 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 INA2180A3IDSGR part is unused and in its original packaging.
Return procedure for INA2180A3IDSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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