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Texas Instruments INA283AQDGKRQ1
- Part No.:
- INA283AQDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA283AQDGKRQ1.pdf
- Description:
- IC CURRENT MONITOR 0.4% 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,964
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Product details
Overview
INA283AQDGKRQ1 from Texas Instruments is an automotive-grade, bidirectional voltage-output current shunt monitor with 200 V/V fixed gain, –14 V to +80 V common-mode input range, ±20 μV offset voltage, 140 dB CMRR, and operation from 2.7 V to 18 V supply. It enables high-accuracy low-side or high-side battery current sensing in EV/HEV powertrain systems where shunt drops as low as 10 mV full-scale must be resolved.
For engineers reviewing the INA283AQDGKRQ1 datasheet, INA283AQDGKRQ1 pinout, INA283AQDGKRQ1 application, or INA283AQDGKRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to +125°C), functional safety documentation support, zero-drift architecture for stable offset drift (0.3 μV/°C), and VSSOP-8 package compatibility with space-constrained automotive control modules.
Technical Context
The INA283AQDGKRQ1 employs a zero-drift chopper-stabilized amplifier topology to achieve ultra-low offset and near-zero drift over temperature, enabling accurate measurement of small differential voltages across shunts under wide common-mode transients. Its switched-capacitor input stage delivers 140 dB DC CMRR but introduces discrete-time behavior, resulting in a 10 kHz effective bandwidth and step-response settling within 15 μs after common-mode disturbances.
It supports unidirectional or bidirectional current sensing via flexible reference pin configuration (REF1/REF2), allowing output biasing from GND to V+ or to an external precision reference (e.g., 2.048 V). The device operates without external protection components up to ±14 V reverse battery and 80 V load-dump transients-critical for automotive power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 200 V/V - scales 10 mV shunt drop to 2 V output, enabling high-resolution ADC interfacing with minimal signal conditioning |
| Common-Mode Range | –14 V to +80 V - supports direct connection to battery terminals or motor phases without level-shifting or isolation |
| Offset Voltage | ±20 μV max - ensures ≤0.1% error at 10 mV full-scale shunt voltage, critical for low-current detection in BMS |
| CMRR | 140 dB - rejects >100 V common-mode noise while preserving <100 μV differential signal integrity |
| Quiescent Current | 900 μA max - enables always-on monitoring in wake-up-capable EPS or brake control units without excessive standby drain |
| Temp Range | –40°C to +125°C - meets AEC-Q100 Grade 1 ambient requirements for under-hood and powertrain ECUs |
| Supply Voltage | 2.7 V to 18 V - compatible with 3.3 V microcontroller I/O and 12 V automotive bus, eliminating need for auxiliary LDO |
Pinout & Package
VSSOP-8 package (3.00 mm × 3.00 mm body size), thermally enhanced for automotive under-hood operation; pin-compatible with SOIC-8 variant (INA283AQDRQ1) but with reduced footprint and improved thermal resistance (RθJA = 164.1°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–IN) | Analog input | Connects to negative side of shunt; forms differential pair with +IN to reject common-mode voltage |
| 2 (GND) | Analog ground | Reference node for internal circuitry; must be tied to system analog ground with low-impedance path |
| 3 (REF2) | Analog reference input | One terminal of internal reference divider; used with REF1 to set output quiescent voltage (0 V to V+) |
| 4 (NC) | No connect | Not internally bonded; leave floating or tie to GND per layout best practice to reduce noise coupling |
| 5 (OUT) | Analog output | Voltage output proportional to shunt current (VOUT = 200 × VSENSE + VREF); drives 10 kΩ loads with ≤0.4 V rail margin |
| 6 (V+) | Power supply | Single supply input (2.7–18 V); powers internal amplifier and reference circuitry; bypass with 100 nF ceramic capacitor |
| 7 (REF1) | Analog reference input | Second terminal of internal reference divider; matched to REF2 for precise output biasing in bidirectional mode |
| 8 (+IN) | Analog input | Connects to positive side of shunt; differential input pair handles up to 80 V common-mode while rejecting noise |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for –40°C to +125°C ambient operation with HBM ±2 kV / CDM ±750 V ESD robustness |
| Zero-drift architecture | Delivers ±20 μV offset and 0.3 μV/°C drift-enables 10 mV full-scale shunt sensing with <0.2% total error |
| Bidirectional sensing support | REF1/REF2 pins allow precise mid-supply or external-reference output biasing for AC-coupled or regenerative current measurement |
| Automotive transient tolerance | Withstands –14 V reverse battery and 80 V load-dump events without external TVS diodes or series resistors |
| Functional safety documentation | Includes FIT rate, failure mode analysis, and diagnostic coverage guidance for ISO 26262 ASIL-B system integration |
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 sense amplifier converting shunt voltage to conditioned analog output for MCU ADC sampling at 10 kHz. Use Value: 200 V/V gain and 10 mV full-scale capability enable high-resolution current measurement with <1% error across ±500 A range using 20 μΩ shunt. | Use Scenario: Real-time motor phase current feedback in 12 V EPS control units for torque ripple suppression and fault detection. IC Role / Device Role / Timing Role: High-side current monitor interfaced to 3.3 V SAR ADC, operating continuously during vehicle ignition-on state. Use Value: 900 μA quiescent current and –40°C to +125°C rating support always-on diagnostics without compromising battery life or thermal derating. |
| Brake System Control | Body Control Module |
Use Scenario: Detecting actuator coil current in electro-hydraulic brake (EHB) modules to verify solenoid engagement and identify open-circuit faults. IC Role / Device Role / Timing Role: Unidirectional high-side current monitor with GND-referenced output, providing fast response to 100 mA–10 A load steps. Use Value: 15 μs transient recovery and 140 dB CMRR ensure reliable current reporting despite PWM switching noise and 12 V bus ripple. | Use Scenario: Monitoring fuse-fed loads (e.g., lighting, HVAC blower) in centralized body controllers to detect overcurrent and prevent wiring harness damage. IC Role / Device Role / Timing Role: Low-side current monitor with V+ referenced output for fail-safe open-wire detection prior to load activation. Use Value: –14 V to +80 V common-mode range allows direct connection to battery feed without level shifters, reducing BOM count and PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA283AQDRQ1 | SOIC-8 package (4.90 mm × 3.91 mm); higher RθJA (134.9°C/W); identical electrical specs | Preferred for through-hole assembly or legacy board designs requiring larger thermal pad access | Select when manual rework, thermal vias under exposed pad, or compatibility with existing SOIC footprints is required |
| MAX40056ATA+T | 250 V/V gain; 125°C max junction temp; no AEC-Q100 Grade 1 certification; 1.2 mA IQ | Suitable for industrial or commercial EV chargers where automotive qualification is not mandated | Choose only for non-automotive applications needing slightly higher gain and wider supply range (2.7 V–36 V) |
Compared with INA283AQDRQ1 and MAX40056ATA+T, the INA283AQDGKRQ1 provides the smallest footprint (VSSOP-8), lowest quiescent current, and full AEC-Q100 Grade 1 compliance-making it optimal for new automotive ECU designs prioritizing space, thermal performance, and functional safety certification.
Availability
INA283AQDGKRQ1 is available at Aetrix Electronics and suitable for EV battery management, electric power steering, and brake system control requiring stable component supply across long-life automotive production programs.
Supply support for INA283AQDGKRQ1 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 deep expertise in automotive electronics and functional safety solutions.
The INA28x-Q1 product line was designed specifically for high-accuracy, high-reliability current sensing in automotive powertrain and chassis systems-including battery monitoring, motor control, and active safety ECUs.
FAQ
What is the maximum common-mode voltage the INA283AQDGKRQ1 can handle?
The INA283AQDGKRQ1 supports a common-mode input voltage range of –14 V to +80 V. This allows direct connection to automotive battery terminals and motor phases without external level-shifting circuitry, and enables robust operation during reverse-battery and load-dump transients up to 80 V-eliminating the need for external TVS protection in most cases.
Does the INA283AQDGKRQ1 require external reference components for bidirectional current sensing?
No-the INA283AQDGKRQ1 integrates matched internal reference resistors on REF1 and REF2 pins. By connecting both pins to a single external voltage (e.g., 2.048 V), the device sets its quiescent output precisely to that reference, enabling accurate bidirectional current measurement without external dividers or op-amps. This simplifies design and improves temperature stability versus discrete solutions.
How does the zero-drift architecture of the INA283AQDGKRQ1 improve accuracy at low shunt voltages?
The zero-drift architecture of the INA283AQDGKRQ1 achieves ±20 μV maximum offset and 0.3 μV/°C drift, 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 full-scale, which is essential for high-efficiency battery monitoring and low-power EPS systems.
Is the INA283AQDGKRQ1 pin-compatible with other devices in the INA28x-Q1 family?
Yes-the INA283AQDGKRQ1 shares identical pinout and package dimensions (VSSOP-8) with all members of the INA28x-Q1 family (INA282/284/285/286-Q1). This allows hardware reuse across designs requiring different gains (50–1000 V/V), provided the reference configuration and output loading are verified for each variant's bandwidth and drive capability.
What is the effective bandwidth of the INA283AQDGKRQ1, and how does it affect step response?
The INA283AQDGKRQ1 has a 10 kHz effective bandwidth due to its switched-capacitor input architecture. Step responses settle within 15 μs after common-mode transients, making it suitable for fast current-loop feedback in EPS and brake actuators. However, designers must account for discrete-time behavior in high-frequency noise rejection and avoid aliasing when sampling above 5 kHz.
INA283AQDGKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-VSSOP
INA283AQDGKRQ1 FAQ
1.How can I place an order for INA283AQDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA283AQDGKRQ1 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 INA283AQDGKRQ1 reliable?
The price and inventory of INA283AQDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA283AQDGKRQ1 is usually 5 days.
3.What payment methods are accepted for INA283AQDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA283AQDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA283AQDGKRQ1?
INA283AQDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA283AQDGKRQ1 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 INA283AQDGKRQ1?
For technical support, including INA283AQDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA283AQDGKRQ1 requirements.
6.How does Aetrix verify that INA283AQDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA283AQDGKRQ1 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 INA283AQDGKRQ1 meets industry standards.
7.What is the process for return or replacement of INA283AQDGKRQ1?
All INA283AQDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA283AQDGKRQ1, 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 INA283AQDGKRQ1 part is unused and in its original packaging.
Return procedure for INA283AQDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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