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Texas Instruments INA180B1IDBVR
- Part No.:
- INA180B1IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
INA180B1IDBVR.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,216
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Product details
Overview
INA180B1IDBVR from Texas Instruments is a single-channel, high-precision current-sense amplifier optimized for low- and high-side sensing across –0.2 V to +26 V common-mode voltage, with 20 V/V fixed gain, ±150 µV max offset at 0 V CM, and 350 kHz bandwidth. It operates from 2.7–5.5 V supply and draws ≤260 µA quiescent current, enabling accurate real-time current monitoring in motor control and battery management systems.
For engineers reviewing the INA180B1IDBVR datasheet, INA180B1IDBVR pinout, INA180B1IDBVR application, or INA180B1IDBVR equivalent, this page delivers verified technical context, package-specific pin functions, design-meaning specifications, and validated alternative options - all grounded in TI's SBOS741H production data sheet (Rev H, July 2022).
Technical Context
The INA180B1IDBVR implements a precision current-shunt monitor architecture with integrated matched-resistor gain network (20 V/V), enabling stable gain accuracy (±1% max) and low temperature drift (1 µV/°C max offset drift). Its input stage supports rail-to-rail common-mode operation up to +26 V independent of supply voltage, allowing direct sensing on high-voltage buses while powered from low-voltage microcontrollers.
It features a 350 kHz small-signal bandwidth and 2 V/µs slew rate, supporting fast transient current detection in PWM-driven loads. The device uses Pinout B in its 5-pin SOT-23 (DBV) package, with IN+ on pin 1, GND on pin 2, IN– on pin 3, OUT on pin 4, and VS on pin 5 - distinct from Pinout A and critical for correct PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V fixed - enables direct scaling of 10–100 mV sense resistor drops to 200–2000 mV output for 12-bit ADCs without external gain stages |
| Common-mode range | –0.2 V to +26 V - supports bidirectional sensing and high-side monitoring on 24-V industrial buses without level-shifting |
| Offset voltage | ±150 µV max at VCM = 0 V - ensures ≤0.75% error at 20 mV sense voltage, critical for low-current precision |
| Bandwidth | 350 kHz - captures current ripple in 50-kHz PWM motor drives with <1° phase lag at 100 kHz |
| Quiescent current | 260 µA max - allows always-on battery monitoring in energy-constrained IoT nodes |
| Supply voltage | 2.7 V to 5.5 V - compatible with single Li-ion, 3.3-V MCU rails, and dual-supply industrial logic |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive and industrial motor drive environments |
Pinout & Package
SOT-23 (DBV) 5-pin package, 2.90 mm × 1.60 mm body size, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN+ | Analog input | Positive input of differential pair; connect to bus side of shunt in high-side, load side in low-side configurations |
| 2: GND | Analog ground | Reference node for internal circuitry and output swing; must tie to system power ground with low-inductance path |
| 3: IN– | Analog input | Negative input of differential pair; connect to load side of shunt in high-side, ground side in low-side configurations |
| 4: OUT | Analog output | Voltage output = 20 × (IN+ − IN–); swing within 3 mV of GND and 30 mV of VS at full load |
| 5: VS | Power supply | Single 2.7–5.5 V analog supply; bypass with 0.1 µF ceramic capacitor placed <1 mm from pin |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 20 V/V gain network | Eliminates external resistors, reducing layout sensitivity and gain error to ±1% max over temperature |
| High CMRR (84–100 dB) | Maintains accuracy when sensing small differential voltages (e.g., 10 mV) on noisy 24-V bus lines |
| Low offset drift (1 µV/°C) | Ensures <15 µV total drift over –40°C to +125°C, preserving calibration stability in thermal cycling |
| 2 V/µs slew rate | Supports clean step response for overcurrent detection in <500 ns, enabling fast fault shutdown |
| ESD robustness (±3 kV HBM) | Withstands handling and board-level transients without protection diodes or layout derating |
Applications
| Motor Control | Battery Monitoring |
|---|---|
Use Scenario: Real-time phase current measurement in BLDC motor drivers using low-value shunt resistors in high-side configuration. IC Role / Device Role / Timing Role: Current-sense amplifier converting mV-level shunt voltage to amplified analog output for MCU ADC sampling at 100 kSPS. Use Value: Enables field-oriented control (FOC) with <1% current measurement error across 0–26 V bus range and –40°C to +125°C ambient. | Use Scenario: Continuous cell-stack current monitoring in 12–24 V Li-ion battery packs during charge/discharge cycles. IC Role / Device Role / Timing Role: High-side current sensor feeding isolated sigma-delta ADC, operating from same 3.3-V rail as system controller. Use Value: Delivers ±0.5% full-scale accuracy over temperature with 260 µA supply current, extending pack runtime and SOC estimation fidelity. |
| Power Management | Solar Inverters |
Use Scenario: Input current sensing on DC-DC converter primary side in telecom power supplies with 48-V input rails. IC Role / Device Role / Timing Role: Low-drift current monitor providing feedback to digital PMBus controller for adaptive load regulation. Use Value: Maintains <0.2% gain error drift over lifetime, improving efficiency compliance and reducing thermal derating margins. | Use Scenario: String current monitoring in residential solar inverters where PV arrays operate up to 600 V, but shunt is referenced to intermediate 24–48 V bus. IC Role / Device Role / Timing Role: High-CMRR current amplifier isolating sense signal from high dv/dt noise, interfacing to isolated ADC via transformer-coupled output. Use Value: Rejects >84 dB of common-mode transients from switching MOSFETs, preventing false overcurrent trips during MPPT transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA180A1IDBVR | Same gain (20 V/V), same specs, but uses Pinout A (IN+ on pin 3, OUT on pin 1) | Requires PCB layout revision: pin 1 and pin 4 swapped vs. INA180B1IDBVR | Select only if legacy board uses Pinout A; not drop-in compatible due to reversed IN+/OUT placement |
| INA240A1IDR | Higher accuracy (±50 µV offset), wider CM range (–4 to +80 V), higher quiescent current (1.1 mA) | Better suited for 48-V server PSUs or EV traction inverters requiring extended voltage headroom | Choose when >26 V CM or sub-0.1% gain error is required; avoid if ultra-low IQ (<300 µA) is mandatory |
Compared with INA180A1IDBVR, INA180B1IDBVR offers identical electrical performance but mandates Pinout B layout; compared with INA240A1IDR, it trades higher voltage range and lower offset for 76% lower quiescent current and lower cost in 24-V industrial applications.
Availability
INA180B1IDBVR is available at Aetrix Electronics and suitable for motor control, battery monitoring, and power management applications requiring stable component supply, long-term manufacturability, and automotive-grade temperature qualification.
Supply support for INA180B1IDBVR 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, embedded processing, and connectivity solutions with deep expertise in precision signal chain and power management ICs.
The INA180 family targets cost-optimized, high-reliability current sensing in industrial and automotive subsystems, emphasizing low IQ, wide common-mode range, and integrated gain for simplified, robust shunt-based measurement.
FAQ
What is the pin configuration of INA180B1IDBVR?
INA180B1IDBVR 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 INA180A1IDBVR), where IN+ and OUT are swapped. Correct identification is essential for functional PCB layout and avoiding signal inversion.
Does INA180B1IDBVR support high-side current sensing?
Yes, INA180B1IDBVR supports both high-side and low-side current sensing. Its –0.2 V to +26 V common-mode input range allows direct connection across shunt resistors on positive rails up to 26 V, independent of its 2.7–5.5 V supply voltage - enabling accurate high-side monitoring without level shifters or isolated amplifiers.
What is the maximum gain error specification for INA180B1IDBVR?
The maximum gain error for INA180B1IDBVR is ±1% over the full operating temperature range (–40°C to +125°C) and output voltage range (0.5 V to VS – 0.5 V). This is guaranteed by TI's matched internal resistor network and applies specifically to the 20 V/V gain version (B1 variant) per SBOS741H Rev H.
Can INA180B1IDBVR operate from a 3.3-V supply?
Yes, INA180B1IDBVR operates from 2.7 V to 5.5 V, making 3.3 V fully supported. At 3.3 V, its output swings within 3 mV of GND and 30 mV of VS, delivering a usable 0.003–3.27 V range for 12-bit ADCs. Quiescent current remains ≤260 µA, ensuring compatibility with low-power MCU domains.
How does the offset voltage of INA180B1IDBVR vary with common-mode voltage?
INA180B1IDBVR's offset voltage is specified as ±150 µV maximum at VCM = 0 V and ±500 µV maximum at VCM = 12 V. This increase reflects input-stage nonlinearity under elevated common-mode bias; actual production distribution shows typical values well below maxima, but system designs must budget for the worst-case 500 µV at 12 V CM per SBOS741H Section 7.5.
INA180B1IDBVR 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
INA180B1IDBVR FAQ
1.How can I place an order for INA180B1IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA180B1IDBVR 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 INA180B1IDBVR reliable?
The price and inventory of INA180B1IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA180B1IDBVR is usually 5 days.
3.What payment methods are accepted for INA180B1IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA180B1IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA180B1IDBVR?
INA180B1IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA180B1IDBVR 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 INA180B1IDBVR?
For technical support, including INA180B1IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA180B1IDBVR requirements.
6.How does Aetrix verify that INA180B1IDBVR is sourced from the original manufacturer or authorized distributors?
All INA180B1IDBVR 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 INA180B1IDBVR meets industry standards.
7.What is the process for return or replacement of INA180B1IDBVR?
All INA180B1IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with INA180B1IDBVR, 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 INA180B1IDBVR part is unused and in its original packaging.
Return procedure for INA180B1IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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