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Texas Instruments INA286AIDGKT
- Part No.:
- INA286AIDGKT
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA286AIDGKT.pdf
- Description:
- IC CURRENT MONITOR 0.4% 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:359
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Product details
Overview
INA286AIDGKT from Texas Instruments is a high-accuracy, zero-drift current shunt monitor IC designed for bidirectional high-side and low-side current sensing in power systems. It features 100 V/V fixed gain, –14 V to +80 V wide common-mode input range, ±20 µV max offset voltage, and operates from a single 2.7 V to 18 V supply. It enables precise measurement of as little as 10 mV full-scale shunt voltage drop in telecom power supplies and solar inverter protection circuits.
For engineers reviewing the INA286AIDGKT datasheet, INA286AIDGKT pinout, INA286AIDGKT application, or INA286AIDGKT equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated VSSOP-8 pin functions, confirmed alternative options with functional differences, and supply-chain support details specific to industrial power monitoring designs.
Technical Context
The INA286AIDGKT uses a zero-drift chopper-stabilized architecture to achieve ±20 µV max offset and 0.3 µV/°C max drift over –40°C to +125°C, enabling accurate sub-100 mV shunt sensing without calibration. Its switched-capacitor input stage delivers 140 dB CMRR and supports operation with common-mode voltages extending 14 V below GND - critical for battery-reversal tolerant automotive and telecom front-end monitoring.
This device implements dual reference inputs (REF1, REF2) that allow flexible unidirectional or bidirectional output biasing - including ground-referenced, V+-referenced, or externally referenced configurations - while maintaining 1 V/V reference gain and ±0.5% divider accuracy. Its 10 kHz effective bandwidth and 900 µA max quiescent current suit real-time current feedback in digitally controlled DC/DC converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V - fixed ratio converts 10 mV–100 mV shunt differential into 1 V–10 V output, simplifying ADC interface without external gain stages |
| Common-mode range | –14 V to +80 V - supports direct connection to 48 V telecom buses, 12 V/24 V automotive rails, and high-voltage solar string monitors without level-shifting |
| Offset voltage | ±20 µV max - enables <1% error at 10 mV full-scale shunt drop, reducing power loss vs. conventional 100 mV designs |
| CMRR | 140 dB - rejects noise from switching power stages and EMI-coupled transients in motor drives and inverters |
| Supply voltage | 2.7 V to 18 V - powers from single Li-ion cell up to industrial 15 V rails, eliminating need for auxiliary LDOs |
| Quiescent current | 900 µA max - allows always-on current monitoring in battery-backed systems with minimal standby drain |
| Bandwidth | 10 kHz - captures fast load transients in server VRMs and UPS systems while rejecting PWM switching noise above 20 kHz |
Pinout & Package
VSSOP-8 package (3.00 mm × 3.00 mm), thermally enhanced for PCB space-constrained power modules and embedded controllers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: –IN | Analog input | Connects to load side of shunt resistor; accepts common-mode voltages down to –14 V - enables true high-side sensing with negative rail fault tolerance |
| 2: GND | Analog ground | Reference node for internal circuitry; must be tied to system analog ground plane with low-inductance path to minimize noise coupling |
| 3: REF2 | Reference input | One half of differential reference pair; sets output quiescent point when used with REF1 - enables bidirectional current detection centered at user-defined voltage |
| 4: NC | No connect | Internally unconnected; must be left floating or tied to GND to prevent parasitic coupling in high-noise environments |
| 5: OUT | Analog output | Voltage output proportional to shunt current; swings within 15 mV of GND and 400 mV of V+ at 10 kΩ load - compatible with 12-bit SAR ADCs without buffering |
| 6: V+ | Power supply | Single positive supply input; accepts 2.7 V–18 V - powers internal amplifier and reference circuitry; bypass capacitor required per layout guidelines |
| 7: REF1 | Reference input | Second half of differential reference pair; matched to REF2 for <0.5% divider error - allows precision offset adjustment without trimming resistors |
| 8: +IN | Analog input | Connects to supply side of shunt resistor; handles same –14 V to +80 V common-mode range as –IN - supports bidirectional current flow detection |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Delivers ±20 µV max offset and 0.3 µV/°C max drift - eliminates thermal calibration in industrial temperature ranges (–40°C to +125°C) |
| Dual reference inputs (REF1/REF2) | Enable programmable output center-point from GND to V+ - supports both unidirectional overload alarms and bidirectional motor current control |
| –14 V to +80 V common-mode range | Withstands 12 V battery reversal and ISO 7637-2 pulse 5a transients without external protection - reduces BOM count in automotive ECUs |
| 100 V/V fixed gain | Optimized for 10 mV–100 mV shunt drops - achieves 1% full-scale accuracy with standard 1% shunt resistors, avoiding costly precision components |
| 900 µA max supply current | Enables continuous current monitoring in energy-sensitive applications like smart meters and battery management systems |
Applications
| Telecom Power Monitoring | Automotive Battery Management |
|---|---|
Use Scenario: Real-time current monitoring in 48 V DC distribution units feeding base station RF amplifiers. IC Role / Device Role / Timing Role: High-side current shunt monitor measuring bidirectional load current with ±10 A range and 10 ms response time. Use Value: Enables dynamic load shedding during brownout events using 10 mV shunt drop - cuts power loss by 90% vs. 100 mV designs. |
Use Scenario: Cell-level current sensing in 12 V lead-acid battery packs for start-stop systems. IC Role / Device Role / Timing Role: Low-side current monitor interfacing to microcontroller ADC with 12-bit resolution and 10 kHz sampling. Use Value: Survives –14 V reverse-battery transients without clamping diodes - eliminates 2 external TVS devices per channel. |
| Solar Inverter DC Link Protection | Industrial Motor Drive Phase Current Sensing |
Use Scenario: Overcurrent detection on PV string inputs of grid-tied inverters operating up to 1000 V DC. IC Role / Device Role / Timing Role: Isolated current sense front-end with galvanic separation via optocoupler or digital isolator. Use Value: 80 V common-mode rating allows direct connection to string midpoints - avoids expensive isolated amplifiers in cost-sensitive residential inverters. |
Use Scenario: Three-phase motor current feedback in servo drives with IGBT switching at 20 kHz. IC Role / Device Role / Timing Role: High-bandwidth (10 kHz) current monitor capturing PWM edge transients for field-oriented control. Use Value: 140 dB CMRR suppresses 20 kHz switching noise - improves torque ripple performance by >30% vs. non-zero-drift alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current shunt monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA286AIDR | Same electrical specs and pinout, but in SOIC-8 (4.90 mm × 3.91 mm) package - 3× larger footprint, higher thermal resistance (134.9°C/W vs. 164.1°C/W) | Preferred where board space permits and manual soldering or legacy footprint compatibility is required | Select INA286AIDR for through-hole prototyping or high-reliability industrial modules needing mechanical robustness |
| INA240A2DGNR | 20 V/V gain, –4 V to +80 V common-mode, 120 dB CMRR, 50 kHz bandwidth - higher speed but lower gain and reduced low-VCM capability | Better suited for high-frequency motor control where 100 V/V gain causes ADC saturation at low currents | Choose INA240A2DGNR when monitoring >5 A loads with 50 mΩ shunts and requiring faster transient response than INA286AIDGKT provides |
Compared with INA286AIDR and INA240A2DGNR, the INA286AIDGKT offers optimal trade-off of compact VSSOP-8 size, 100 V/V gain for low-current precision, and –14 V fault tolerance - making it uniquely suitable for space-constrained telecom and automotive modules requiring sub-10 mV sensing resolution.
Availability
INA286AIDGKT is available at Aetrix Electronics and suitable for telecom power distribution, automotive battery management, solar inverter protection, and industrial motor drive applications requiring stable component supply across multi-year production cycles.
Supply support for INA286AIDGKT 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 INA28x product line was engineered specifically for high-accuracy bidirectional current sensing in harsh industrial, automotive, and renewable energy systems - emphasizing wide common-mode range, zero-drift stability, and fault-tolerant operation.
FAQ
What is the maximum common-mode voltage the INA286AIDGKT can withstand?
The INA286AIDGKT supports a common-mode input voltage range of –14 V to +80 V, verified per TI SBOS485C datasheet Section 6.3. This allows direct connection to 48 V telecom buses and survival of automotive battery reversal faults. Operation beyond these limits risks permanent damage, and no external protection is needed within this range.
Does the INA286AIDGKT require external gain-setting resistors?
No, the INA286AIDGKT has a factory-trimmed fixed gain of 100 V/V and requires no external resistors. This eliminates gain error from resistor tolerance and temperature drift, ensuring ±1.4% max gain error over –40°C to +125°C as specified in Section 6.5 of the datasheet.
How does the dual-reference architecture (REF1/REF2) function in the INA286AIDGKT?
The INA286AIDGKT uses REF1 and REF2 as a differential reference pair to set output quiescent voltage. When tied together to a voltage source (e.g., 2.048 V), the output centers at that voltage for bidirectional sensing. When both are grounded, output rests near GND for unidirectional high-side monitoring - all without external op-amps or dividers.
Can the INA286AIDGKT operate from a 3.3 V supply?
Yes, the INA286AIDGKT operates from 2.7 V to 18 V, fully specified down to 2.7 V per Section 6.3. At 3.3 V, its output swings from GND + 15 mV to V+ – 400 mV into 10 kΩ, supporting direct interface with 3.3 V microcontrollers and 12-bit ADCs without level-shifting.
What is the thermal performance of the INA286AIDGKT in VSSOP-8 package?
In the DGK (VSSOP-8) package, the INA286AIDGKT has a junction-to-ambient thermal resistance (RθJA) of 164.1°C/W per Section 6.4. With 900 µA max supply current and typical 10 mW dissipation, temperature rise remains under 2°C at ambient - suitable for dense power module layouts without forced airflow.
INA286AIDGKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Current Monitor
- Sensing Method:
- High/Low-Side
- Accuracy:
- ±0.4%
- Voltage - Input:
- -14V ~ 80V
- Current - Output:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
INA286AIDGKT FAQ
1.How can I place an order for INA286AIDGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA286AIDGKT 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 INA286AIDGKT reliable?
The price and inventory of INA286AIDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA286AIDGKT is usually 5 days.
3.What payment methods are accepted for INA286AIDGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA286AIDGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA286AIDGKT?
INA286AIDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA286AIDGKT 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 INA286AIDGKT?
For technical support, including INA286AIDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA286AIDGKT requirements.
6.How does Aetrix verify that INA286AIDGKT is sourced from the original manufacturer or authorized distributors?
All INA286AIDGKT 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 INA286AIDGKT meets industry standards.
7.What is the process for return or replacement of INA286AIDGKT?
All INA286AIDGKT units undergo pre-shipment inspection (PSI). If there is an issue with INA286AIDGKT, 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 INA286AIDGKT part is unused and in its original packaging.
Return procedure for INA286AIDGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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