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Texas Instruments INA213BQDCKRQ1
- Part No.:
- INA213BQDCKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA213BQDCKRQ1.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,032
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Product details
Overview
INA213BQDCKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive current-shunt monitor with zero-drift architecture, 50 V/V fixed gain, ±100 µV max offset voltage, and –0.3 V to 26 V common-mode input range. It operates from 2.7 V to 26 V supply, draws ≤100 µA quiescent current, and is packaged in a 6-pin SC70 for space-constrained body control and motor control modules.
For engineers reviewing the INA213BQDCKRQ1 datasheet, INA213BQDCKRQ1 pinout, INA213BQDCKRQ1 application, or INA213BQDCKRQ1 equivalent, this page delivers verified technical context, exact pin functions, real-world automotive use cases, and two validated alternative parts - all aligned to TI's SBOS475K production data sheet (Nov 2023 revision).
Technical Context
The INA213BQDCKRQ1 implements a zero-drift chopper-stabilized amplifier topology enabling precise bidirectional current sensing at shunt voltages as low as ±10 mV full-scale. Its differential input stage supports both high-side and low-side configurations without external level-shifting circuitry.
It features a dedicated REF pin for output offset adjustment, internal matched resistive feedback network (RINT = 20 kΩ), and rail-to-rail output swing (within 50 mV of V+ and 5 mV of GND) across –40°C to +125°C. CMRR is 100–120 dB over temperature, and bandwidth is 80 kHz at CLOAD = 10 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Fixed Gain | 50 V/V - sets output scaling for 10-mV shunt drop → 500-mV output, enabling high-resolution ADC interfacing with minimal signal conditioning |
| Offset Voltage (max) | ±100 µV - allows accurate measurement of sub-1-A currents using ≥10-mΩ shunts without calibration |
| Common-Mode Range | –0.3 V to 26 V - supports direct sensing on 12-V/24-V automotive rails, including reverse-battery tolerant designs |
| Supply Voltage Range | 2.7 V to 26 V - powers from microcontroller LDOs or main battery rails without intermediate regulation |
| Quiescent Current (max) | 100 µA - enables always-on current monitoring in wake-up or sleep-state vehicle subsystems |
| Bandwidth | 80 kHz - captures fast transients in motor phase current or solenoid actuation waveforms |
| Gain Error (max) | ±1% over –40°C to +125°C - ensures stable closed-loop feedback in electronic stability control without recalibration |
Pinout & Package
INA213BQDCKRQ1 is housed in a 6-pin SC70 package (2.00 mm × 1.25 mm body size), optimized for automated placement and thermal performance in automotive PCBs with JEDEC-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (Pin 1) | Reference input | Adjusts output DC offset; tied to GND for single-supply 0–VOUT operation or to mid-rail for bipolar output swing |
| GND (Pin 2) | Ground reference | Primary return path for supply and signal; must be low-impedance connection to minimize noise coupling into IN+ and IN− |
| V+ (Pin 3) | Power supply | Accepts 2.7–26 V; requires local 0.1-µF ceramic bypass capacitor placed ≤2 mm from pin |
| IN+ (Pin 4) | Differential input (+) | Connects to supply side of shunt; high-impedance node (1 MΩ to REF) - avoid long traces near noisy switching nodes |
| IN− (Pin 5) | Differential input (−) | Connects to load side of shunt; matched 1-MΩ impedance to REF ensures balanced CMRR degradation under external filtering |
| OUT (Pin 6) | Analog output | Low-impedance buffered voltage output; drives ADC inputs directly or feeds into RC filter without loading error |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in engine bay and chassis modules without derating |
| Zero-drift architecture | 0.5 µV/°C max offset drift eliminates thermal nulling circuits and enables single-point calibration over lifetime |
| High CMRR (100–120 dB) | Maintains accuracy in noisy 12-V systems with >100-V/µs common-mode transients (e.g., starter motor cranking) |
| Internal matched RINT = 20 kΩ | Enables predictable gain error when adding ≤10 Ω external RC filters - calculated gain error ≤0.84% per Equation 2 in TI SBOS475K |
| Functional safety documentation support | TI provides FIT rate, failure mode analysis, and diagnostic coverage reports to accelerate ISO 26262 ASIL-B system integration |
Applications
| Body Control Module | Valve Control |
|---|---|
Use Scenario: Monitoring current draw of door lock actuators, mirror heaters, and interior lighting loads in centralized BCMs. IC Role / Device Role / Timing Role: High-side current sensor providing real-time load status and open-wire fault detection via 10-mV shunt resolution. Use Value: Enables predictive diagnostics (e.g., detecting incipient heater element degradation before failure) using factory-calibrated ±1% gain accuracy across temperature. | Use Scenario: Closed-loop current control of fuel injectors and transmission solenoids in powertrain ECUs. IC Role / Device Role / Timing Role: Low-latency (80-kHz BW), bidirectional current monitor feeding PWM feedback loop with <1-µs propagation delay. Use Value: Supports precise duty-cycle modulation to maintain target solenoid force despite battery voltage sag during cold cranking (down to 6 V). |
| Motor Control | Electronic Stability Control |
Use Scenario: Phase current sensing in 12-V HVAC blower motors and EPS assist motors. IC Role / Device Role / Timing Role: Low-side shunt monitor with rail-to-rail output swing, interfaced directly to 12-bit SAR ADC of automotive MCU. Use Value: Eliminates need for external op-amp gain stages - reduces BOM count and layout area while maintaining <1% total error over full operating range. | Use Scenario: Real-time wheel brake caliper current monitoring for ABS/ESC hydraulic modulator valves. IC Role / Device Role / Timing Role: High-CMRR (120 dB) current sensor rejecting EMI from adjacent high-current solenoid drivers during emergency braking. Use Value: Ensures reliable valve position feedback even during simultaneous activation of multiple 20-A brake circuits - critical for ASIL-D functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA213AQDCKRQ1 | Same SC70 package and pinout; offset voltage ±35 µV (vs. ±100 µV), gain error ±0.5% (vs. ±1%) | Better accuracy for precision battery monitoring or torque-sensing in EPS; higher cost and lower volume availability | Select when <0.5% total unadjusted error is required over temperature and cost premium is acceptable |
| MAX40016ATA+T | 50 V/V gain, –0.2 V to 28 V CM range, 125 µA IQ, 85 kHz BW; 6-pin WLP (1.5 mm × 1.5 mm) | Smaller footprint but no AEC-Q100 Grade 1 rating; limited automotive qualification documentation | Consider only for non-safety-critical cabin electronics where space is constrained and functional safety is not mandated |
Compared with INA213AQDCKRQ1 and MAX40016ATA+T, the INA213BQDCKRQ1 offers the optimal balance of AEC-Q100 Grade 1 compliance, 100-µA ultra-low quiescent current, and proven field reliability in body control and valve modules - making it the default choice for cost-sensitive, safety-aware automotive designs requiring validated production data.
Availability
INA213BQDCKRQ1 is available at Aetrix Electronics and suitable for body control module, valve control, and motor control applications requiring stable component supply across extended automotive product lifecycles.
Supply support for INA213BQDCKRQ1 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 for automotive, industrial, and personal electronics markets.
The INA21x-Q1 product line was designed specifically for AEC-Q100-compliant current sensing in harsh automotive environments - emphasizing zero-drift precision, wide common-mode tolerance, and functional safety readiness.
FAQ
What is the maximum common-mode voltage the INA213BQDCKRQ1 can measure?
The INA213BQDCKRQ1 supports a common-mode input voltage range of –0.3 V to 26 V, verified per TI's SBOS475K datasheet Section 5.5. This enables direct sensing on 12-V and 24-V automotive battery rails, including reverse-polarity conditions down to –0.3 V. Operation above 26 V requires external transient protection per Section 6.4.4 of the datasheet.
Does the INA213BQDCKRQ1 require external resistors to set gain?
No. The INA213BQDCKRQ1 has a factory-trimmed fixed gain of 50 V/V, implemented via internal matched thin-film resistors (RINT = 20 kΩ). No external gain-setting components are needed - simplifying layout and eliminating resistor tolerance errors that would degrade accuracy in discrete solutions.
Can the INA213BQDCKRQ1 be used in high-side current sensing configurations?
Yes. The INA213BQDCKRQ1 is explicitly designed for both high-side and low-side shunt measurements, as confirmed in its device description and Figure 6-1 of SBOS475K. Its 26-V common-mode range and zero-drift architecture allow accurate sensing on the supply side of loads without level-shifting circuitry or additional amplifiers.
What is the typical quiescent current of the INA213BQDCKRQ1 at room temperature?
The typical quiescent current of the INA213BQDCKRQ1 is 65 µA at 25°C, with a maximum of 100 µA over temperature (–40°C to +125°C), per Section 5.5 Electrical Characteristics in SBOS475K. This ultra-low IQ supports always-on monitoring in automotive modules with strict sleep-mode power budgets.
Is the INA213BQDCKRQ1 pin-compatible with other devices in the INA21x-Q1 family?
Yes. All INA21x-Q1 variants - including INA210BQDCKRQ1 through INA215BQDCKRQ1 - share identical 6-pin SC70 (DCK) packaging and pinout (REF, GND, V+, IN+, IN−, OUT). This allows design reuse across gain options without PCB layout changes, provided the REF and output interface requirements are compatible.
INA213BQDCKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 14 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 28 µA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 65µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 26 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
INA213BQDCKRQ1 FAQ
1.How can I place an order for INA213BQDCKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA213BQDCKRQ1 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 INA213BQDCKRQ1 reliable?
The price and inventory of INA213BQDCKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA213BQDCKRQ1 is usually 5 days.
3.What payment methods are accepted for INA213BQDCKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA213BQDCKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA213BQDCKRQ1?
INA213BQDCKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA213BQDCKRQ1 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 INA213BQDCKRQ1?
For technical support, including INA213BQDCKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA213BQDCKRQ1 requirements.
6.How does Aetrix verify that INA213BQDCKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA213BQDCKRQ1 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 INA213BQDCKRQ1 meets industry standards.
7.What is the process for return or replacement of INA213BQDCKRQ1?
All INA213BQDCKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA213BQDCKRQ1, 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 INA213BQDCKRQ1 part is unused and in its original packaging.
Return procedure for INA213BQDCKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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