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Texas Instruments INA180B2IDBVR
- Part No.:
- INA180B2IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
INA180B2IDBVR.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,364
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Product details
Overview
INA180B2IDBVR from Texas Instruments is a single-channel, high-precision current-sense amplifier with 50 V/V fixed gain, –0.2 V to +26 V common-mode input range, ±500 µV maximum offset voltage at 12 V VCM, and 2 V/µs slew rate. It operates from 2.7 V to 5.5 V supply and delivers accurate analog current monitoring in motor control and battery management systems.
For engineers reviewing the INA180B2IDBVR datasheet, INA180B2IDBVR pinout, INA180B2IDBVR application, or INA180B2IDBVR equivalent, this device supports low-side and high-side sensing across wide common-mode voltages while maintaining tight gain error (±1% max) and low quiescent current (260 µA max) for power-constrained embedded designs.
Technical Context
The INA180B2IDBVR implements a precision instrumentation amplifier architecture with integrated matched resistor gain network, enabling stable 50 V/V gain independent of temperature and process variation. Its input stage operates beyond the supply rails, allowing direct sensing on 26-V bus lines while powered from a 3.3-V or 5-V rail.
It features rail-to-rail output swing (within 5 mV of GND and 30 mV of VS), 350-kHz small-signal bandwidth (A1 variant), and 210-kHz bandwidth specific to the B2 gain version - optimized for fast transient response in overcurrent detection and closed-loop motor control feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V fixed - eliminates external gain-setting resistors and reduces layout sensitivity to parasitic capacitance. |
| Common-mode input range | –0.2 V to +26 V - enables direct sensing on high-voltage buses without level-shifting circuitry. |
| Offset voltage (max) | ±500 µV at VCM = 12 V - ensures ≤10 mV error at 200-mΩ sense resistor for ±25-A full-scale measurement. |
| Bandwidth | 210 kHz - supports accurate current sampling up to ~33 kHz fundamental frequency with <1% gain error. |
| Slew rate | 2 V/µs - allows full-scale output step (<4 V) in under 2 µs, critical for fast overcurrent fault response. |
| Quiescent current | 260 µA max - enables always-on current monitoring in battery-powered systems with minimal standby drain. |
| Supply voltage | 2.7 V to 5.5 V - compatible with standard 3.3-V and 5-V logic domains without LDO overhead. |
Pinout & Package
The INA180B2IDBVR is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, using Pinout B configuration per TI SBOS741H Rev H.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN+ | Positive input - connects to bus-voltage side of shunt in high-side; load side in low-side configurations. |
| 2 | GND | Analog ground reference - must be tied to system power ground with low-impedance path to minimize noise coupling. |
| 3 | IN− | Negative input - connects to load side of shunt in high-side; ground side in low-side configurations. |
| 4 | OUT | Analog output - delivers amplified Vsense × 50; drives ADC inputs or comparator thresholds directly. |
| 5 | VS | Power supply - accepts 2.7–5.5 V; bypass capacitor (0.1 µF) required between VS and GND near the pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 50 V/V gain network | Eliminates external resistors and reduces gain error drift to 1.5 ppm/°C - improves long-term calibration stability. |
| Rail-to-rail output | Swings within 5 mV of GND and 30 mV of VS - maximizes dynamic range when interfacing with 12-bit ADCs. |
| High CMRR (84 dB min) | Maintains accuracy despite noisy 26-V bus transients - critical for reliable operation in motor drive inverters. |
| Low input bias current (≤0.1 µA) | Minimizes voltage drop error across high-value sense resistors (>1 Ω), preserving measurement linearity. |
| Extended temperature range | Specified from –40°C to +125°C - suitable for under-hood automotive and industrial power modules. |
Applications
| Motor Control | Battery Monitoring |
|---|---|
Use Scenario: Real-time phase current sensing in BLDC motor drivers with 12–24 V DC bus. IC Role / Device Role / Timing Role: High-side current-sense amplifier delivering analog feedback to MCU ADC for field-oriented control (FOC). Use Value: 210-kHz bandwidth and 2 V/µs slew rate enable accurate sampling of PWM-modulated currents with minimal phase lag. | Use Scenario: Cell-level or pack-level current monitoring in 3S–6S Li-ion battery packs. IC Role / Device Role / Timing Role: Low-side shunt amplifier feeding coulomb counter or protection IC with precise bidirectional current data. Use Value: ±500 µV offset at 12 V VCM ensures <1% error at 10-A full scale with 10-mΩ shunt, even at elevated temperatures. |
| Power Management | Solar Inverters |
Use Scenario: Input/output current monitoring in isolated DC-DC converters and POL regulators. IC Role / Device Role / Timing Role: High-side sensing on 24-V or 48-V input rails to detect overload and enable graceful shutdown. Use Value: –0.2 V to +26 V common-mode range allows direct connection without external attenuators or level shifters. | Use Scenario: String current monitoring in MPPT charge controllers and grid-tied microinverters. IC Role / Device Role / Timing Role: Low-drift current amplifier for analog input to isolation amplifier or sigma-delta ADC. Use Value: 1-µV/°C offset drift ensures stable calibration across outdoor ambient temperature swings (–25°C to +65°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A2IDR | 50 V/V gain, 80-V common-mode range, higher quiescent current (1.1 mA), enhanced EMI rejection | Required for >26 V bus sensing (e.g., 48-V telecom, EV charging); less suitable for ultra-low-power battery monitoring | Select INA240A2IDR when bus voltage exceeds 26 V or EMI immunity in noisy switching environments is critical. |
| MAX4080TASA+ | 50 V/V gain, 76-V common-mode, 2.7–76 V supply, higher offset (±1 mV), no extended temp rating | Supports wider supply range but lacks –40°C to +125°C qualification; not recommended for automotive or industrial thermal environments | Choose MAX4080TASA+ only for non-automotive 48-V systems where extended temperature operation is not required. |
Compared with INA180B2IDBVR, INA240A2IDR offers higher voltage capability and noise immunity at the cost of power efficiency, while MAX4080TASA+ trades temperature robustness for broader supply flexibility - making INA180B2IDBVR optimal for cost-sensitive, thermally demanding 24-V embedded current sensing.
Availability
INA180B2IDBVR is available at Aetrix Electronics and suitable for motor control, battery monitoring, and solar inverter applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for INA180B2IDBVR 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 company specializing in analog and embedded processing technologies, with leadership in precision signal chain and power management solutions.
The INA180 family was designed for cost-optimized, high-accuracy current sensing in space-constrained industrial and automotive subsystems - emphasizing low power, wide common-mode operation, and integrated gain stability.
FAQ
What is the pin configuration of the INA180B2IDBVR?
The INA180B2IDBVR uses Pinout B in its 5-pin SOT-23 (DBV) package: Pin 1 = IN+, Pin 2 = GND, Pin 3 = IN−, Pin 4 = OUT, Pin 5 = VS. This differs from Pinout A (used by INA180Ax variants), where OUT and IN+ positions are swapped - PCB layout must match the B-suffix designation to ensure correct functionality.
Does the INA180B2IDBVR support high-side current sensing?
Yes, the INA180B2IDBVR supports both high-side and low-side current sensing. Its –0.2 V to +26 V common-mode input range allows the IN+ and IN− inputs to operate up to 26 V above GND, independent of the 2.7–5.5 V supply voltage - enabling direct connection across shunts on positive rails without level-shifting circuitry.
What is the bandwidth of the INA180B2IDBVR and how does it affect current measurement?
The INA180B2IDBVR has a small-signal bandwidth of 210 kHz (per SBOS741H Rev H, Table 7-5). This enables accurate measurement of current waveforms with fundamental frequencies up to ~33 kHz before gain error exceeds 1%, making it suitable for PWM-based motor control and fast transient detection in power supplies.
How does the offset voltage specification of the INA180B2IDBVR impact measurement accuracy?
The INA180B2IDBVR has a maximum offset voltage of ±500 µV at VCM = 12 V. When used with a 10-mΩ shunt at 10-A full scale, this contributes ≤0.5% gain-independent error - critical for applications like battery fuel gauging or overcurrent trip thresholds where absolute accuracy at mid-scale matters more than ratiometric stability.
Is the INA180B2IDBVR qualified for automotive applications?
No, the INA180B2IDBVR is specified for the extended industrial temperature range (–40°C to +125°C) but is not AEC-Q200 qualified. For automotive use, TI recommends the pin-compatible INA240-Q1 series, which includes automotive-grade screening, enhanced ESD robustness, and guaranteed operation across the full AEC-Q200 temperature profile.
INA180B2IDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 350 kHz
- Current - Input Bias:
- 80 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 260µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
INA180B2IDBVR FAQ
1.How can I place an order for INA180B2IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA180B2IDBVR 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 INA180B2IDBVR reliable?
The price and inventory of INA180B2IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA180B2IDBVR is usually 5 days.
3.What payment methods are accepted for INA180B2IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA180B2IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA180B2IDBVR?
INA180B2IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA180B2IDBVR 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 INA180B2IDBVR?
For technical support, including INA180B2IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA180B2IDBVR requirements.
6.How does Aetrix verify that INA180B2IDBVR is sourced from the original manufacturer or authorized distributors?
All INA180B2IDBVR 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 INA180B2IDBVR meets industry standards.
7.What is the process for return or replacement of INA180B2IDBVR?
All INA180B2IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with INA180B2IDBVR, 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 INA180B2IDBVR part is unused and in its original packaging.
Return procedure for INA180B2IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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