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Texas Instruments INA213CQDCKRQ1
- Part No.:
- INA213CQDCKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA213CQDCKRQ1.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,101
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Product details
Overview
INA213CQDCKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive current-shunt monitor with zero-drift architecture, designed for bidirectional low-side or high-side sensing across shunts at common-mode voltages from –0.3 V to 26 V. It features 50 V/V fixed gain, ±100 µV max offset voltage, ±0.5% max gain error over temperature, 80 kHz bandwidth, and 100 µA max quiescent current - enabling accurate 10-mV full-scale current measurement in motor control and body electronics.
For engineers reviewing the INA213CQDCKRQ1 datasheet, INA213CQDCKRQ1 pinout, INA213CQDCKRQ1 application, or INA213CQDCKRQ1 equivalent, this page delivers verified technical context, package mapping, real-world use cases, and validated alternative options - all grounded in TI's official SBOS475K specification and automotive qualification data.
Technical Context
The INA213CQDCKRQ1 implements a zero-drift chopper-stabilized amplifier topology to achieve ±100 µV maximum input offset and 0.5 µV/°C max offset drift over –40°C to +125°C, supporting precise low-voltage shunt sensing. Its 50 V/V gain is internally fixed via 20 kΩ/1 MΩ resistor network (R3/R4), delivering output voltage VOUT = (ILOAD × RSHUNT) × 50 + VREF.
It operates from a single 2.7-V to 26-V supply, accepts differential inputs up to ±28 V, and maintains 100 dB min CMRR at DC. The REF pin supports externally applied reference voltages (0 V to VS), enabling level-shifted output for ADC interfacing or bidirectional current polarity detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V - sets output scaling for 10-mV shunt drop → 500-mV output, minimizing power loss in precision current sensing. |
| Offset voltage (max) | ±100 µV - enables full-scale accuracy down to 10-mV shunt voltage, reducing I²R losses by 90% vs. 100-mV alternatives. |
| Gain error (max) | ±0.5% over –40°C to +125°C - ensures stable calibration across automotive thermal cycles without recalibration. |
| Common-mode range | –0.3 V to 26 V - supports direct sensing on 12-V/24-V battery rails, including reverse-battery and load-dump transients. |
| Bandwidth | 80 kHz - captures fast current transients in motor commutation and valve actuation without phase lag. |
| Quiescent current | 100 µA max - allows always-on monitoring in low-power body control modules without draining battery. |
| Supply voltage | 2.7 V to 26 V - powers directly from vehicle battery or regulated 3.3-V/5-V rail, eliminating need for auxiliary LDO. |
Pinout & Package
INA213CQDCKRQ1 is housed in a 6-pin SC70 package (2.00 mm × 1.25 mm body size), optimized for space-constrained automotive PCBs and thermally robust under reflow. Pin functions are validated per TI SBOS475K Figure 4-1 and Table 4-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (Pin 1) | Reference input | Accepts external DC reference (0 V to V+) to shift output baseline - essential for bidirectional current sensing and differential ADC interfacing. |
| GND (Pin 2) | Ground reference | System ground return for internal bias network and output stage - must be low-impedance connection to minimize noise coupling. |
| V+ (Pin 3) | Power supply | Single supply input (2.7 V–26 V); bypass capacitor (0.01–0.1 µF) required adjacent to pin for stability and transient immunity. |
| IN+ (Pin 4) | Differential input (+) | Connects to supply side of shunt resistor; high-impedance node (1 MΩ to REF) - routing must avoid noise pickup. |
| IN− (Pin 5) | Differential input (−) | Connects to load side of shunt resistor; matched 1 MΩ path to REF enables common-mode rejection and shutdown leakage control. |
| OUT (Pin 6) | Analog output | Voltage-output stage drives 10-kΩ loads; swing is (V+) – 0.2 V to GND + 0.05 V - compatible with 3.3-V SAR ADCs without level shifting. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive ECU reliability requirements without derating. |
| Zero-drift architecture | ±100 µV max offset and 0.5 µV/°C drift - eliminates thermal-induced gain/offset errors in engine bay or powertrain environments. |
| Wide common-mode range | –0.3 V to 26 V - supports direct sensing on 12-V/24-V systems, including negative transients during cranking or load dump. |
| Fixed 50 V/V gain | Optimized for 10–60 mV shunt drops - balances resolution, noise, and dynamic range for motor phase current and solenoid monitoring. |
| Functional safety documentation | TI-provided FIT rate, failure mode analysis, and diagnostic coverage guidance - accelerates ISO 26262 ASIL-B system integration. |
Applications
| Body Control Module | Valve Control |
|---|---|
Use Scenario: Monitoring current draw of door lock actuators, seat position motors, and HVAC blend doors in modern vehicle BCMs. IC Role / Device Role / Timing Role: High-side current-shunt monitor providing real-time load feedback to microcontroller for fault detection and PWM duty-cycle adaptation. Use Value: Enables 10-mV shunt-based sensing with ±0.5% gain accuracy across –40°C to +125°C - reducing board area and heat generation vs. higher-drop alternatives. | Use Scenario: Closed-loop current control of fuel injectors, transmission solenoids, and EGR valves in powertrain ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt amplifier feeding ADC input for real-time current regulation during rapid valve switching events. Use Value: 80 kHz bandwidth captures sub-millisecond current transitions; 50 V/V gain scales 20-mV shunt drop to 1-V output - matching 12-bit ADC full scale. |
| Motor Control | Electronic Stability Control |
Use Scenario: Phase current sensing in 12-V BLDC fans, power steering assist motors, and wiper drive circuits. IC Role / Device Role / Timing Role: Low-side or high-side current monitor interfaced to MCU ADC for torque estimation and overcurrent protection. Use Value: ±100 µV offset enables accurate stall detection at low speeds; SC70 footprint fits tight motor driver layouts without compromising thermal performance. | Use Scenario: Real-time wheel brake caliper current monitoring in ESC hydraulic control units to verify solenoid activation and detect open/short faults. IC Role / Device Role / Timing Role: Automotive-grade current sensor providing fault-flaggable analog output to safety MCU for ASIL-B diagnostics. Use Value: AEC-Q100 qualification and functional safety documentation reduce validation effort; 26-V common-mode withstands ABS pump transients. |
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; ±1% gain error (vs. ±0.5% for INA213CQDCKRQ1); identical offset and bandwidth. | Targeted at cost-sensitive automotive modules where ±1% gain tolerance is acceptable (e.g., non-safety-critical lighting controls). | Select INA213AQDCKRQ1 only if system-level calibration tolerates wider gain variation; retains same layout and firmware. |
| INA226AQDWVR | 20-bit delta-sigma ADC + digital interface (I²C); 16-V max common-mode; no REF pin; 1024-sample averaging. | Used when digital current/power/energy telemetry is required - not a direct analog replacement due to different interface and supply constraints. | Choose INA226AQDWVR only for systems needing digital reporting; requires firmware changes, new layout, and I²C infrastructure. |
Compared with INA213AQDCKRQ1, the INA213CQDCKRQ1 offers tighter ±0.5% gain accuracy critical for ASIL-B motor control loops, while INA226AQDWVR trades analog simplicity for digital telemetry - neither is pin-compatible, but both serve distinct automotive sensing tiers.
Availability
INA213CQDCKRQ1 is available at Aetrix Electronics and suitable for body control module, valve control, and motor control applications requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for INA213CQDCKRQ1 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-grade signal conditioning and power management ICs.
The INA21x-Q1 product line was engineered specifically for automotive current sensing - delivering AEC-Q100 qualified, zero-drift amplifiers that maintain precision across extreme temperature and voltage transients in body, chassis, and powertrain systems.
FAQ
What is the maximum common-mode voltage supported by the INA213CQDCKRQ1?
The INA213CQDCKRQ1 supports a common-mode input voltage range of –0.3 V to 26 V, as specified in its absolute maximum ratings and recommended operating conditions. This allows direct sensing on 12-V and 24-V automotive battery rails, including negative transients during cranking. Operation above 26 V requires external transient protection circuitry per TI's application guidance in Section 6.4.4 of SBOS475K. The INA213CQDCKRQ1 itself must not be exposed to sustained voltages beyond 26 V.
Does the INA213CQDCKRQ1 require an external reference voltage to operate?
No, the INA213CQDCKRQ1 does not require an external reference voltage to operate - it functions with REF tied to GND or V+/2 for unidirectional sensing. However, applying an external DC voltage (0 V to V+) to the REF pin enables bidirectional current measurement and output level shifting, which is essential for interfacing with differential-input ADCs or detecting current direction in motor control. The INA213CQDCKRQ1's internal architecture fully supports either configuration without modification.
What is the typical bandwidth and slew rate of the INA213CQDCKRQ1?
The INA213CQDCKRQ1 has a typical small-signal bandwidth of 80 kHz (measured with 10 pF load) and a slew rate of 0.4 V/µs, as documented in Section 5.5 of the SBOS475K datasheet. These values enable accurate capture of fast current transients in solenoid actuation and BLDC motor commutation. Bandwidth remains stable across –40°C to +125°C, and the slew rate ensures distortion-free step response for 10-mV shunt inputs driving full-scale output swings.
How does the zero-drift architecture of the INA213CQDCKRQ1 improve measurement accuracy?
The zero-drift chopper-stabilized architecture of the INA213CQDCKRQ1 reduces input offset voltage to ±100 µV maximum and limits offset drift to 0.5 µV/°C over –40°C to +125°C. This enables accurate current sensing with shunt voltage drops as low as 10 mV full-scale - cutting I²R losses by 90% compared to conventional 100-mV designs. The architecture also suppresses 1/f noise and maintains CMRR >100 dB, making the INA213CQDCKRQ1 suitable for precision applications like ESC solenoid monitoring where thermal stability is critical.
Is the INA213CQDCKRQ1 pin-compatible with other devices in the INA21x-Q1 family?
Yes, the INA213CQDCKRQ1 is pin-compatible with all members of the INA21x-Q1 family (INA210–INA215-Q1) in the SC70-6 package, sharing identical pinout, footprint, and terminal functions per Figure 4-1 and Table 4-1 of SBOS475K. This allows design reuse across gain variants - for example, swapping INA213CQDCKRQ1 (50 V/V) for INA214CQDCKRQ1 (100 V/V) requires only a BOM change and gain recalibration, with no PCB revision needed.
INA213CQDCKRQ1 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:
- 80 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
INA213CQDCKRQ1 FAQ
1.How can I place an order for INA213CQDCKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA213CQDCKRQ1 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 INA213CQDCKRQ1 reliable?
The price and inventory of INA213CQDCKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA213CQDCKRQ1 is usually 5 days.
3.What payment methods are accepted for INA213CQDCKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA213CQDCKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA213CQDCKRQ1?
INA213CQDCKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA213CQDCKRQ1 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 INA213CQDCKRQ1?
For technical support, including INA213CQDCKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA213CQDCKRQ1 requirements.
6.How does Aetrix verify that INA213CQDCKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA213CQDCKRQ1 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 INA213CQDCKRQ1 meets industry standards.
7.What is the process for return or replacement of INA213CQDCKRQ1?
All INA213CQDCKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA213CQDCKRQ1, 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 INA213CQDCKRQ1 part is unused and in its original packaging.
Return procedure for INA213CQDCKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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