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Texas Instruments INA214CQDCKRQ1
- Part No.:
- INA214CQDCKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA214CQDCKRQ1.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,650
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Product details
Overview
INA214CQDCKRQ1 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 current sensing in systems with common-mode voltages up to 26 V. It features 100 V/V fixed gain, ±100 µV maximum offset voltage, ±0.5% max gain error over temperature, and operates from 2.7 V to 26 V supply. It enables precise 10-mV full-scale shunt measurements in motor control and electronic stability control.
For engineers reviewing the INA214CQDCKRQ1 datasheet, INA214CQDCKRQ1 pinout, INA214CQDCKRQ1 application, or INA214CQDCKRQ1 equivalent, this page delivers verified specifications, validated SC70-6 pin functions, confirmed automotive-grade performance parameters, and two technically documented alternative parts for functional replacement in body control modules and wireless charging transmitters.
Technical Context
The INA214CQDCKRQ1 implements a zero-drift chopper-stabilized amplifier topology that achieves ±100 µV max input offset and 0.5 µV/°C max offset drift across –40°C to +125°C. Its differential input stage supports bidirectional sensing with –0.3 V to 26 V common-mode range independent of supply voltage.
It uses internal matched thin-film resistors (R3 = 10 kΩ, R4 = 1 MΩ) to set its 100 V/V gain and provides rail-to-rail output swing within 50 mV of V+ and 5 mV of GND at –40°C to +125°C, enabling direct interfacing with 3.3-V or 5-V ADCs without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V - sets output voltage as 100× sensed shunt voltage, enabling 10-mV full-scale shunt drop detection |
| Offset voltage (max) | ±100 µV - allows accurate measurement down to 10-mV shunt drops without calibration |
| Gain error (max) | ±0.5% over –40°C to +125°C - ensures stable scaling across automotive temperature range |
| Common-mode range | –0.3 V to 26 V - supports high-side sensing on 12-V/24-V battery rails and low-side sensing near ground |
| Supply voltage | 2.7 V to 26 V - powers directly from vehicle battery or regulated 3.3-V/5-V rail without external LDO |
| Quiescent current (max) | 100 µA - minimizes parasitic load in always-on automotive subsystems |
| Bandwidth | 30 kHz - supports real-time current monitoring for PWM-driven motors and fast transient detection |
Pinout & Package
INA214CQDCKRQ1 is housed in a 6-pin SC70 package (2.00 mm × 1.25 mm body size), optimized for space-constrained automotive PCB layouts and thermally efficient mounting on small copper pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (Pin 1) | Reference input | Accepts 0 V to V+ reference voltage; determines output common-mode level and must be buffered if sourced from resistive divider |
| GND (Pin 2) | Ground reference | Primary return path for internal circuitry and output stage; requires low-impedance connection to system ground plane |
| V+ (Pin 3) | Power supply | Single 2.7 V–26 V supply input; bypass capacitor (0.01–0.1 µF) required adjacent to pin for stability |
| IN+ (Pin 4) | Differential input (+) | Connects to supply side of shunt resistor in high-side configuration or to load side in low-side configuration |
| IN– (Pin 5) | Differential input (–) | Connects to load side of shunt in high-side configuration or to ground side in low-side configuration |
| OUT (Pin 6) | Analog output | Voltage-output pin delivering (VIN+ – VIN–) × 100 + VREF; drives 10-kΩ loads with <50-mV headroom to V+ |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation in safety-critical automotive ECUs including body control and stability systems |
| Zero-drift architecture | Enables 10-mV full-scale shunt sensing with ±100 µV offset and 0.5 µV/°C drift-reducing shunt power loss by 90% vs. 100-mV designs |
| Wide common-mode range | –0.3 V to 26 V allows direct high-side sensing on 12-V/24-V battery rails without level-shifting or external amplifiers |
| Low quiescent current | 100 µA max enables integration into always-on domains (e.g., wake-up circuits) without compromising battery standby life |
| Fixed 100 V/V gain | Eliminates external gain-setting resistors, reducing BOM count and layout sensitivity while ensuring production consistency |
Applications
| Body Control Module | Motor Control |
|---|---|
Use Scenario: Monitoring current in door lock actuators, seat position motors, and HVAC blower fans. IC Role / Device Role / Timing Role: Bidirectional current-sense amplifier measuring load current direction and magnitude for fault detection and closed-loop torque control. Use Value: Enables 10-mV shunt-based sensing that reduces heat dissipation by 90% versus conventional 100-mV shunts, improving thermal margin in densely packed BCM PCBs. | Use Scenario: Real-time phase current feedback in 12-V brushed DC or BLDC motor drivers for electric power steering and cooling fans. IC Role / Device Role / Timing Role: High-bandwidth (30 kHz) current-shunt monitor providing analog output synchronized to PWM switching for current-loop regulation. Use Value: Zero-drift performance maintains accuracy across –40°C to +125°C, eliminating recalibration during cold cranking or under-hood thermal cycling. |
| Electronic Stability Control | Wireless Charging Transmitter |
Use Scenario: Measuring solenoid coil current in ABS/ESC hydraulic modulator valves to verify actuation timing and detect open/short faults. IC Role / Device Role / Timing Role: High-CMRR (≥105 dB) current monitor rejecting battery ripple and ignition noise during valve energization pulses. Use Value: 26-V common-mode capability allows direct high-side sensing on 12-V solenoid supply, avoiding isolation components and saving board space. | Use Scenario: Sensing transmitter coil current in 15-W automotive wireless charging pads to regulate power delivery and prevent thermal runaway. IC Role / Device Role / Timing Role: Precision bidirectional current sensor feeding analog input of MCU ADC for real-time coil current control loop. Use Value: ±0.5% gain error over temperature ensures consistent power regulation across ambient conditions, meeting Qi A11 compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA214AQDCKRQ1 | Same SC70-6 package and 100 V/V gain, but ±1% max gain error (vs. ±0.5% for INA214CQDCKRQ1) | Suitable for cost-sensitive non-safety-critical applications where tighter gain tolerance is not required | Select INA214AQDCKRQ1 only when ±1% gain error is acceptable and functional safety documentation is not needed |
| INA226AQDGSRQ1 | I²C digital output, 16-bit ADC, 0.1% gain error, but requires microcontroller interface and external power sequencing | Used where digital bus communication, multi-channel monitoring, or higher resolution are prioritized over analog simplicity | Choose INA226AQDGSRQ1 when system already uses I²C infrastructure and needs programmable gain or alert functionality |
Compared with INA214AQDCKRQ1, the INA214CQDCKRQ1 offers tighter gain accuracy and full functional safety documentation support; compared with INA226AQDGSRQ1, it delivers simpler analog integration, lower latency, and no firmware dependency-making it optimal for deterministic real-time current loops in ESC and BCM.
Availability
INA214CQDCKRQ1 is available at Aetrix Electronics and suitable for body control modules, motor control units, electronic stability control systems, and wireless charging transmitters requiring stable component supply across automotive production lifecycles.
Supply support for INA214CQDCKRQ1 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 AEC-Q100-compliant current sensing in harsh automotive environments, emphasizing zero-drift precision, wide common-mode operation, and functional safety readiness.
FAQ
What is the maximum common-mode voltage supported by the INA214CQDCKRQ1?
The INA214CQDCKRQ1 supports a common-mode input voltage range of –0.3 V to 26 V, independent of supply voltage. This allows direct high-side sensing on 12-V and 24-V automotive battery rails without level-shifting circuitry. The specification is guaranteed across the full operating temperature range of –40°C to +125°C per AEC-Q100 Grade 1 requirements.
Does the INA214CQDCKRQ1 require external gain-setting resistors?
No, the INA214CQDCKRQ1 integrates precision thin-film resistors to deliver a fixed 100 V/V gain. This eliminates external gain components, reduces layout sensitivity, improves production consistency, and avoids resistor tolerance-induced errors. The internal resistor network (R3 = 10 kΩ, R4 = 1 MΩ) is laser-trimmed during manufacturing to achieve ±0.5% gain error over temperature.
Can the INA214CQDCKRQ1 be used for bidirectional current sensing?
Yes, the INA214CQDCKRQ1 supports bidirectional current sensing by leveraging its rail-to-rail output swing and REF pin flexibility. When REF is tied to mid-supply (e.g., V+/2), the output centers at that voltage and swings above/below it proportionally to forward/reverse shunt current. This enables detection of current direction in H-bridge motor drivers and regenerative braking circuits.
What is the typical bandwidth and slew rate of the INA214CQDCKRQ1?
The INA214CQDCKRQ1 has a typical bandwidth of 30 kHz with a 10-pF load and a slew rate of 0.4 V/µs. These specifications enable accurate capture of PWM-modulated motor currents and fast transient events such as solenoid turn-on spikes in ESC systems, supporting real-time closed-loop control without phase lag.
Is functional safety documentation available for the INA214CQDCKRQ1?
Yes, Texas Instruments provides functional safety documentation for the INA214CQDCKRQ1, including failure-in-time (FIT) data, diagnostic coverage analysis, and safety manual guidance. This support aids ISO 26262 ASIL-B system-level design for applications such as electronic stability control and body control modules where current monitoring contributes to safety goals.
INA214CQDCKRQ1 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:
- 30 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 28 µA
- Voltage - Input Offset:
- 1 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
INA214CQDCKRQ1 FAQ
1.How can I place an order for INA214CQDCKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA214CQDCKRQ1 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 INA214CQDCKRQ1 reliable?
The price and inventory of INA214CQDCKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA214CQDCKRQ1 is usually 5 days.
3.What payment methods are accepted for INA214CQDCKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA214CQDCKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA214CQDCKRQ1?
INA214CQDCKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA214CQDCKRQ1 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 INA214CQDCKRQ1?
For technical support, including INA214CQDCKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA214CQDCKRQ1 requirements.
6.How does Aetrix verify that INA214CQDCKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA214CQDCKRQ1 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 INA214CQDCKRQ1 meets industry standards.
7.What is the process for return or replacement of INA214CQDCKRQ1?
All INA214CQDCKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA214CQDCKRQ1, 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 INA214CQDCKRQ1 part is unused and in its original packaging.
Return procedure for INA214CQDCKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA214CQDCKRQ1 Tags
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