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Texas Instruments INA214AQDCKRQ1
- Part No.:
- INA214AQDCKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA214AQDCKRQ1.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,106
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Product details
Overview
INA214AQDCKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive current-shunt monitor with zero-drift architecture, 100 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 supports bidirectional low-side or high-side shunt sensing in motor control and body electronics.
For engineers reviewing the INA214AQDCKRQ1 datasheet, INA214AQDCKRQ1 pinout, INA214AQDCKRQ1 application, or INA214AQDCKRQ1 equivalent, key selection criteria include its 100 V/V gain accuracy (±1% over temperature), 30 kHz bandwidth, 0.5 µV/°C max offset drift, and SC70-6 package compatibility with space-constrained automotive PCB layouts.
Technical Context
The INA214AQDCKRQ1 implements a zero-drift chopper-stabilized amplifier topology enabling precise measurement of sub-10-mV shunt voltage drops. Its differential input stage rejects common-mode voltages up to 26 V independent of supply rail, supporting direct connection to 12 V or 24 V automotive bus rails.
Internal matched thin-film resistors set the 100 V/V gain with 10 ppm/°C max drift; the REF pin allows output level shifting from 0 V to V+, and the 6-pin SC70 package integrates thermal performance optimized for junction-to-board resistance of 72.1 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V - sets output = 100 × (VIN+ – VIN–) + VREF, enabling 10-mV full-scale shunt sensing |
| Offset voltage (max) | ±100 µV - ensures ≤0.1% error at 100-mV shunt drop, critical for low-current detection |
| Common-mode range | –0.3 V to 26 V - supports direct monitoring of high-side 24-V battery rails without level-shifting |
| Supply voltage | 2.7 V to 26 V - powers from microcontroller LDOs or main vehicle battery, eliminating auxiliary regulators |
| Bandwidth | 30 kHz - captures fast transient currents in motor commutation or solenoid switching |
| Quiescent current | ≤100 µA - enables always-on current monitoring in low-power body control modules |
| Temp range | –40°C to +125°C - qualified for engine bay and under-hood placement per AEC-Q100 Grade 1 |
Pinout & Package
INA214AQDCKRQ1 is housed in a 6-pin SC70 package (2.00 mm × 1.25 mm body size) with exposed pad not electrically connected. The package supports reflow soldering per JEDEC J-STD-020 and achieves 72.1 °C/W junction-to-board thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (Pin 1) | Reference voltage input | DC bias point for output swing; tied to GND for single-ended 0–VS output or to mid-supply for bipolar output |
| GND (Pin 2) | Ground reference | Return path for internal circuitry and output stage; must connect to low-impedance system ground plane |
| V+ (Pin 3) | Positive supply | Power rail input (2.7–26 V); requires 0.1 µF ceramic bypass capacitor placed within 2 mm |
| IN+ (Pin 4) | Noninverting input | Connects to supply side of shunt resistor in high-side configuration or load side in low-side configuration |
| IN– (Pin 5) | Inverting input | Connects to load side of shunt in high-side or supply side in low-side; differential pair with IN+ senses VSENSE |
| OUT (Pin 6) | Output voltage | Amplified and level-shifted output: VOUT = 100 × (VIN+ – VIN–) + VREF; drives ADC inputs directly |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive operation from –40°C to +125°C ambient, including thermal cycling and humidity testing |
| Zero-drift architecture | Eliminates 1/f noise and minimizes offset drift to 0.5 µV/°C, enabling stable 10-mV full-scale measurements |
| Bidirectional sensing capability | Supports both high-side and low-side shunt placement without external components or polarity inversion |
| High CMRR (105 dB min) | Maintains accuracy despite large common-mode transients on 12 V/24 V rails, e.g., during load dump events |
| Functional safety documentation support | Includes FIT rate data, failure mode analysis, and diagnostic coverage guidance for ISO 26262 ASIL-B systems |
Applications
| Body Control Module | Valve Control |
|---|---|
Use Scenario: Monitoring current draw of door lock actuators, window lift motors, and lighting loads in centralized BCM units. IC Role / Device Role / Timing Role: Current-shunt monitor providing real-time load feedback to MCU for open-circuit and short-circuit fault detection. Use Value: Enables <100-µA sleep-mode current monitoring and <1-ms response to overcurrent events using its 30-kHz bandwidth and 100-µV offset. | Use Scenario: Closed-loop current regulation of fuel injector or HVAC blend door solenoids in 12-V power domains. IC Role / Device Role / Timing Role: High-side current sensor feeding analog input of motor driver IC or microcontroller ADC. Use Value: Delivers ±1% gain accuracy across temperature to maintain consistent valve positioning torque without recalibration. |
| Motor Control | Electronic Stability Control |
Use Scenario: Phase current sensing in 24-V EPS (electric power steering) or seat adjustment motors. IC Role / Device Role / Timing Role: Bidirectional shunt amplifier capturing regenerative braking and motoring current with single-polarity output. Use Value: 100-V/V gain and 26-V common-mode range allow direct interface to H-bridge outputs without isolation or attenuation. | Use Scenario: Wheel speed actuator and ABS pump motor current supervision in chassis domain controllers. IC Role / Device Role / Timing Role: Fault-tolerant current monitor reporting to safety MCU via redundant analog channels. Use Value: AEC-Q100 qualification and functional safety documentation support ASIL-B diagnostic coverage 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 |
|---|---|---|---|
| INA214BQDCKRQ1 | Same SC70-6 package and 100 V/V gain, but ±0.5% max gain error (vs. ±1% for INA214AQDCKRQ1) and lower offset drift (0.1 µV/°C) | Required where tighter gain tolerance is needed for calibration-free production, e.g., in Tier-1 ECU manufacturing | Select INA214BQDCKRQ1 when system-level gain error budget is <0.75% over temperature |
| INA226AQDGSRQ1 | Digital-output I²C current/power monitor in 10-pin VSSOP; includes integrated 16-bit ADC, programmable calibration, and alert functions | Suitable for designs requiring digital telemetry, energy accumulation, or host-controlled gain scaling instead of analog output | Choose INA226AQDGSRQ1 when replacing discrete signal chain (shunt + op amp + ADC) or adding power calculation capability |
Compared with INA214AQDCKRQ1, INA214BQDCKRQ1 offers improved gain accuracy at higher cost, while INA226AQDGSRQ1 replaces analog signal conditioning with digital intelligence-neither is pin-compatible, but both serve overlapping automotive current-monitoring use cases with distinct system-level trade-offs.
Availability
INA214AQDCKRQ1 is available at Aetrix Electronics and suitable for body control module, valve control, motor control, and electronic stability control applications requiring stable component supply across automotive production lifecycles.
Supply support for INA214AQDCKRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive-grade signal conditioning and power management solutions.
The INA21x-Q1 product line delivers AEC-Q100-qualified, zero-drift current-shunt monitors for precise, reliable current measurement in harsh automotive environments-designed specifically for body electronics, chassis systems, and electrified powertrain subsystems.
FAQ
What is the maximum common-mode voltage supported by the INA214AQDCKRQ1?
The INA214AQDCKRQ1 supports a common-mode input voltage range of –0.3 V to 26 V. This allows direct connection to 24-V battery rails in automotive applications without external level-shifting circuitry. Operation above 26 V is not recommended for sustained periods, as absolute maximum ratings specify 28 V as the limit, beyond which permanent damage may occur.
Does the INA214AQDCKRQ1 require external precision resistors to set gain?
No, the INA214AQDCKRQ1 has a factory-trimmed fixed gain of 100 V/V implemented with internal matched thin-film resistors. No external gain-setting components are required, simplifying layout and eliminating resistor tolerance and drift errors. Gain error is specified at ±1% maximum over temperature, with 10 ppm/°C drift.
Can the INA214AQDCKRQ1 be used for bidirectional current sensing?
Yes, the INA214AQDCKRQ1 supports bidirectional current sensing through its REF pin. When REF is biased to mid-supply (e.g., VS/2), the output swings symmetrically around that reference, enabling positive and negative current detection across the shunt. This eliminates need for dual-supply operation or external level-shifting circuits.
What is the typical bandwidth and slew rate of the INA214AQDCKRQ1?
The INA214AQDCKRQ1 has a typical small-signal bandwidth of 30 kHz and a slew rate of 0.4 V/µs. These specifications enable accurate capture of fast current transients in motor commutation, solenoid actuation, and PWM-driven loads-critical for real-time fault detection in automotive safety systems.
Is the INA214AQDCKRQ1 compatible with standard SC70-6 PCB footprints?
Yes, the INA214AQDCKRQ1 uses the industry-standard 6-pin SC70 package (DCK) with 0.65-mm pitch and 2.00 mm × 1.25 mm body dimensions. It is fully compatible with IPC-7351B SC70-6 land patterns and supports standard reflow profiles per JEDEC J-STD-020, including peak temperatures up to 260°C.
INA214AQDCKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- 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
INA214AQDCKRQ1 FAQ
1.How can I place an order for INA214AQDCKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA214AQDCKRQ1 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 INA214AQDCKRQ1 reliable?
The price and inventory of INA214AQDCKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA214AQDCKRQ1 is usually 5 days.
3.What payment methods are accepted for INA214AQDCKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA214AQDCKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA214AQDCKRQ1?
INA214AQDCKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA214AQDCKRQ1 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 INA214AQDCKRQ1?
For technical support, including INA214AQDCKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA214AQDCKRQ1 requirements.
6.How does Aetrix verify that INA214AQDCKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA214AQDCKRQ1 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 INA214AQDCKRQ1 meets industry standards.
7.What is the process for return or replacement of INA214AQDCKRQ1?
All INA214AQDCKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA214AQDCKRQ1, 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 INA214AQDCKRQ1 part is unused and in its original packaging.
Return procedure for INA214AQDCKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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