My Inquiry
My Account
Texas Instruments INA286AQDRQ1
- Part No.:
- INA286AQDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
INA286AQDRQ1.pdf
- Description:
- IC CURRENT MONITOR 0.4% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,763
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
INA286AQDRQ1 from Texas Instruments is an automotive-grade, bidirectional voltage-output current shunt monitor with 100 V/V gain, ±20 μV offset voltage, 140 dB CMRR, –14 V to +80 V common-mode range, and operation from 2.7 V to 18 V supply. It enables high-accuracy low-side or high-side current sensing in EV battery management systems where shunt drops as low as 10 mV full-scale must be resolved.
For engineers reviewing the INA286AQDRQ1 datasheet, INA286AQDRQ1 pinout, INA286AQDRQ1 application, or INA286AQDRQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade specifications (AEC-Q100 Grade 1), and real-world implementation constraints for functional safety–capable designs.
Technical Context
The INA286AQDRQ1 uses a zero-drift chopper-stabilized architecture to achieve ±20 μV offset and 0.3 μV/°C drift over –40°C to +125°C, enabling accurate measurement of sub-100 mV shunt voltages in noisy automotive environments. Its switched-capacitor input structure delivers 140 dB DC CMRR but introduces discrete-time step response behavior with settling within 15 μs after common-mode transients.
It supports unidirectional or bidirectional current sensing via configurable REF1/REF2 pins-grounding both sets output to GND at zero differential input; connecting both to V+ sets output near rail; applying external reference (e.g., 2.048 V) enables precise mid-scale biasing for bidirectional operation without gain error degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V - scales 10 mV shunt drop to 1 V output, enabling direct ADC interfacing with minimal amplification. |
| Offset Voltage | ±20 μV - allows accurate detection of ≤10 mV full-scale shunt voltage with <0.2% error at room temperature. |
| CMRR | 140 dB - rejects >100 V common-mode noise while measuring millivolt-level differential signals in high-noise EPS or ESC systems. |
| Common-Mode Range | –14 V to +80 V - withstands automotive battery reversal (–14 V) and load-dump transients (+80 V) without external protection. |
| Quiescent Current | 900 μA max - supports always-on monitoring in body control modules with low standby power budgets. |
| Supply Voltage | 2.7 V to 18 V - operates across cold-crank (≤6 V) and load-dump (≥16 V) conditions without brownout or overvoltage shutdown. |
| Temp Range | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and battery-pack placement in EV/HEV systems. |
Pinout & Package
INA286AQDRQ1 is available in SOIC-8 (4.90 mm × 3.91 mm) and VSSOP-8 (3.00 mm × 3.00 mm) packages. Both are surface-mount, leaded packages rated for automotive reflow profiles and humidity-sensitive level 3 handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: –IN | Analog input | Connects to negative side of shunt resistor; forms differential pair with +IN for bidirectional current polarity detection. |
| 2: GND | Analog ground | Reference node for internal circuitry; must be low-impedance connection to system analog ground plane. |
| 3: REF2 | Analog reference input | One of two matched inputs setting quiescent output voltage; tied to REF1 or external reference for bidirectional biasing. |
| 4: NC | No connect | Not internally bonded; leave floating or tie to GND-no electrical function or signal path. |
| 5: OUT | Analog output | Voltage output proportional to shunt current (VOUT = 100 × VSENSE + VREF); drives 10 kΩ loads with <0.04 V headroom to rails. |
| 6: V+ | Power supply | Single 2.7–18 V supply input; powers internal amplifier and reference circuitry; bypass with 0.1 μF ceramic near pin. |
| 7: REF1 | Analog reference input | Matched partner to REF2; average of REF1/REF2 defines output offset; no functional difference between REF1 and REF2. |
| 8: +IN | Analog input | Connects to positive side of shunt resistor; differential input with –IN determines current direction and magnitude. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Enables stable ±20 μV offset and 0.3 μV/°C drift-critical for maintaining accuracy across engine bay temperature swings. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ±2 kV and CDM ±750 V ESD robustness-meets automotive reliability requirements. |
| Functional safety capability | Documentation provided for ISO 26262 ASIL-B system integration-supports fault-tolerant BMS and EPS designs. |
| Reference input flexibility | REF1/REF2 allow ground-, V+-, or external-reference-biased outputs-enables unidirectional diagnostics or bidirectional full-range sensing without external op-amps. |
| High-voltage transient tolerance | Withstands –14 V reverse battery and +80 V load dump without external TVS-reduces BOM count and PCB area in 12 V/48 V hybrid systems. |
Applications
| EV Battery Management | Electric Power Steering |
|---|---|
Use Scenario: Monitoring pack-level charge/discharge current in 400 V traction battery systems during regenerative braking and fast charging. IC Role / Device Role / Timing Role: Bidirectional current shunt monitor placed on low-side shunt, referenced to 2.048 V for ±500 A range with 10-bit ADC compatibility. Use Value: ±1.4% gain error and 140 dB CMRR ensure <1% total current measurement error despite 400 V common-mode ripple and motor switching noise. | Use Scenario: Real-time motor phase current sensing in 12 V EPS control units to enable torque vectoring and assist-level modulation. IC Role / Device Role / Timing Role: High-side current monitor with REF1/REF2 tied to V+/2, delivering rail-to-rail output for MCU analog input with <15 μs transient recovery. Use Value: 100 V/V gain and 10 mV full-scale resolution support 0.1 A current resolution at 50 A peak-meeting ISO 26262 diagnostic coverage targets. |
| Brake Systems | Body Control Modules |
Use Scenario: Detecting solenoid coil current in electro-hydraulic brake (EHB) actuators to verify valve actuation and detect open-circuit faults. IC Role / Device Role / Timing Role: Unidirectional monitor with REF1/REF2 grounded, output swinging from GND to V+−0.4 V to indicate 0–2 A solenoid current. Use Value: 900 μA quiescent current and –14 V to +80 V common-mode range allow direct integration into 12 V brake controller without auxiliary protection or level-shifting. | Use Scenario: Monitoring fuse current in centralized power distribution units to detect overloads and implement predictive fuse health algorithms. IC Role / Device Role / Timing Role: Low-side shunt monitor with V+ = 5 V, REF1/REF2 = GND, providing 0–3.3 V output to microcontroller ADC for 0–30 A range. Use Value: ±20 μV offset enables detection of <50 mA leakage currents before fuse trip-supporting ASIL-A functional safety goals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA282AQDRQ1 | 50 V/V gain, lower bandwidth (10 kHz), same offset and CMRR | Better suited for higher shunt voltage drops (>20 mV) and lower dynamic range requirements | Select when full-scale shunt voltage exceeds 20 mV and system gain budget allows halving output swing. |
| INA283AQDRQ1 | 200 V/V gain, same package and temp grade, higher gain error (±1.6%) | Optimized for ultra-low shunt drops (<5 mV) where higher sensitivity outweighs gain accuracy trade-off | Choose for sub-5 mV full-scale sensing in compact EPS motor drivers where PCB space limits shunt size. |
Compared with INA282AQDRQ1 and INA283AQDRQ1, the INA286AQDRQ1 provides optimal balance of sensitivity (100 V/V), accuracy (±1.4% gain error), and noise performance for mainstream automotive current monitoring-making it the default choice for 10–20 mV shunt applications in BMS, EPS, and brake ECUs.
Availability
INA286AQDRQ1 is available at Aetrix Electronics and suitable for EV and HEV battery management, electric power steering systems, and brake control modules requiring stable component supply across extended automotive lifecycles.
Supply support for INA286AQDRQ1 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, embedded processing, and automotive electronics with broad manufacturing scale and automotive qualification infrastructure.
The INA28x-Q1 product line was designed specifically for high-reliability, wide common-mode current sensing in automotive powertrain and chassis systems-emphasizing AEC-Q100 compliance, functional safety readiness, and robustness against harsh electrical transients.
FAQ
What is the maximum common-mode voltage the INA286AQDRQ1 can handle?
The INA286AQDRQ1 supports a common-mode input voltage range of –14 V to +80 V. This allows it to withstand automotive reverse-battery conditions (–14 V) and load-dump transients (up to +80 V) without external protection components-making it suitable for direct integration into 12 V and 48 V vehicle networks. The specification is validated across the full –40°C to +125°C operating temperature range.
Does the INA286AQDRQ1 require external components for basic operation?
No, the INA286AQDRQ1 operates with only a single 2.7–18 V supply and appropriate shunt resistor. External components are optional: a 0.1 μF ceramic capacitor on V+ improves PSRR; REF1/REF2 may be tied together and grounded (unidirectional) or connected to an external reference (bidirectional). No external gain-setting resistors or level shifters are needed-the 100 V/V gain is fixed and internally trimmed.
How does the zero-drift architecture improve current measurement accuracy in the INA286AQDRQ1?
The zero-drift chopper-stabilized architecture in the INA286AQDRQ1 achieves ±20 μV initial offset and only ±0.3 μV/°C drift over temperature-enabling accurate measurement of shunt voltages as low as 10 mV full-scale. This reduces shunt power dissipation by 10× compared to conventional amplifiers requiring 100 mV drops, while maintaining <0.2% offset-induced error across –40°C to +125°C in under-hood environments.
Can the INA286AQDRQ1 be used for bidirectional current sensing?
Yes, the INA286AQDRQ1 supports true bidirectional current sensing. By applying a mid-supply reference voltage (e.g., 2.048 V) to both REF1 and REF2 pins, the output centers at that voltage when differential input is zero. Positive current shifts output above reference; negative current shifts it below-enabling full-range measurement of regenerative braking and motoring currents in EV inverters and battery systems.
Is the INA286AQDRQ1 pin-compatible with other devices in the INA28x-Q1 family?
Yes, all INA28x-Q1 devices-including INA282AQDRQ1, INA283AQDRQ1, INA284AQDRQ1, INA285AQDRQ1, and INA286AQDRQ1-share identical SOIC-8 and VSSOP-8 pinouts and reference pin functionality. Gain is the only functional difference; no PCB layout changes are required when substituting between variants for design optimization or cost tuning.
INA286AQDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Monitor
- Sensing Method:
- High/Low-Side
- Accuracy:
- ±0.4%
- Voltage - Input:
- -14V ~ 80V
- Current - Output:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
INA286AQDRQ1 FAQ
1.How can I place an order for INA286AQDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA286AQDRQ1 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 INA286AQDRQ1 reliable?
The price and inventory of INA286AQDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA286AQDRQ1 is usually 5 days.
3.What payment methods are accepted for INA286AQDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA286AQDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA286AQDRQ1?
INA286AQDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA286AQDRQ1 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 INA286AQDRQ1?
For technical support, including INA286AQDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA286AQDRQ1 requirements.
6.How does Aetrix verify that INA286AQDRQ1 is sourced from the original manufacturer or authorized distributors?
All INA286AQDRQ1 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 INA286AQDRQ1 meets industry standards.
7.What is the process for return or replacement of INA286AQDRQ1?
All INA286AQDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA286AQDRQ1, 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 INA286AQDRQ1 part is unused and in its original packaging.
Return procedure for INA286AQDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA286AQDRQ1 Tags
.jpg)
-
PSSI2021SAY,115
Nexperia USA Inc.
-
BCR401RE6327HTSA1
Infineon Technologies
-
INA199B2DCKR
Texas Instruments
-
INA199A1DCKR
Texas Instruments
-
INA199B1DCKR
Texas Instruments
-
NSI45015WT1G
onsemi
-
NSI45020T1G
onsemi
-
NSI45030AT1G
onsemi
-
NSI45025AT1G
onsemi
-
NSI45020AT1G
onsemi
-
NSI50010YT1G
onsemi
-
LM334Z/NOPB
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
