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Texas Instruments INA211CQDCKRQ1
- Part No.:
- INA211CQDCKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA211CQDCKRQ1.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:990
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Product details
Overview
INA211CQDCKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive current-shunt monitor with zero-drift architecture, 500 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 housed in a 6-pin SC70 package for high-side or low-side bidirectional current sensing in motor control and body electronics.
For engineers reviewing the INA211CQDCKRQ1 datasheet, INA211CQDCKRQ1 pinout, INA211CQDCKRQ1 application, or INA211CQDCKRQ1 equivalent, key selection criteria include its 500 V/V gain accuracy (±0.5% max over temperature), 0.5 µV/°C max offset drift, 7 kHz bandwidth, and functional safety documentation support for ISO 26262-compliant systems.
Technical Context
The INA211CQDCKRQ1 implements a zero-drift chopper-stabilized amplifier topology to achieve <±100 µV offset and <0.5 µV/°C drift across –40°C to +125°C. Its differential input stage supports bidirectional sensing with rail-to-rail output swing referenced to a user-defined REF pin.
It features a fixed 500 V/V gain set by internal laser-trimmed resistors, enabling accurate measurement of shunt voltages as low as ±10 mV full-scale. The device maintains 105 dB CMRR at DC and >120 dB at low frequencies, with PSRR >100 dB up to 10 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 500 V/V - enables precise detection of ±10-mV shunt drops with 5-V output swing at full scale |
| Offset voltage (max) | ±100 µV - supports 10-mV full-scale current sensing without calibration |
| Gain error (max) | ±0.5% over temperature - ensures stable gain across automotive operating range |
| Common-mode range | –0.3 V to 26 V - allows direct connection to 12-V or 24-V battery rails in high-side configurations |
| Supply voltage | 2.7 V to 26 V - powers from microcontroller LDOs or main vehicle battery without regulation |
| Quiescent current | ≤100 µA - minimizes parasitic drain in always-on automotive modules |
| Bandwidth | 7 kHz - sufficient for motor phase current monitoring and stability control loop feedback |
Pinout & Package
INA211CQDCKRQ1 is packaged in a 6-pin SC70 (DCK) case measuring 2.00 mm × 1.25 mm, optimized for space-constrained automotive PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (Pin 1) | Reference input | User-configurable output offset; tied to GND for unipolar output or to mid-supply for bipolar operation |
| GND (Pin 2) | Ground reference | Analog ground return path for internal circuitry and output buffer |
| V+ (Pin 3) | Power supply | Single 2.7–26 V supply input; powers amplifier core and output stage |
| IN+ (Pin 4) | Differential input (+) | Connects to supply side of shunt resistor in high-side configuration or load side in low-side |
| IN– (Pin 5) | Differential input (–) | Connects to load side of shunt in high-side or supply side in low-side; defines current direction polarity |
| OUT (Pin 6) | Voltage output | Rail-to-rail buffered output delivering VOUT = (VIN+ − VIN−) × 500 + VREF |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in body control and powertrain modules |
| Zero-drift architecture | Eliminates thermal drift-induced errors in long-duration current measurements |
| Functional safety documentation | Includes FIT rate, failure mode analysis, and diagnostic coverage data for ASIL-B system integration |
| High CMRR (105 dB min) | Rejects noise from shared ground paths and switching transients in 12-V/24-V systems |
| Low input bias current (≤35 µA) | Minimizes error from series resistance in precision shunt networks |
Applications
| Body Control Module | Motor Control |
|---|---|
Use Scenario: Monitoring current to door lock actuators, seat position motors, and HVAC blowers in centralized body domain controllers. IC Role / Device Role / Timing Role: High-side current sensor providing real-time load status and open-circuit/fault detection. Use Value: Enables predictive maintenance via current signature analysis and reduces wiring harness weight by eliminating redundant fuses. | Use Scenario: Closed-loop phase current sensing in 12-V brushed DC or BLDC motor drivers for power seats, sunroofs, and wipers. IC Role / Device Role / Timing Role: Bidirectional analog current monitor feeding ADC inputs for torque and speed regulation. Use Value: Supports 7-kHz bandwidth for PWM ripple rejection and ±0.5% gain accuracy for consistent torque delivery across temperature. |
| Electronic Stability Control | Wireless Charging Transmitter |
Use Scenario: Measuring solenoid coil current in ABS/ESC hydraulic modulator valves during emergency braking events. IC Role / Device Role / Timing Role: Low-latency current monitor with fast start-up (<100 µs) and robust ESD immunity (±3.5 kV HBM). Use Value: Ensures valve actuation fidelity under transient battery conditions (e.g., cranking dips to 6 V) without signal corruption. | Use Scenario: Input current monitoring in 15-W automotive Qi transmitters to enforce foreign object detection (FOD) and thermal derating. IC Role / Device Role / Timing Role: High-side shunt amplifier interfacing directly to 24-V battery input before DC-DC conversion. Use Value: Achieves ±10-mV full-scale sensitivity with 500 V/V gain, enabling sub-100-mA resolution for FOD thresholding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA212CQDCKRQ1 | 1000 V/V gain, ±100 µV offset, 4 kHz bandwidth, same SC70 package | Better suited for ultra-low shunt drops (<5 mV FS); lower bandwidth limits dynamic response | Select when higher gain is required and bandwidth >4 kHz is acceptable |
| INA214CQDCKRQ1 | 100 V/V gain, ±100 µV offset, 30 kHz bandwidth, same SC70 package | Wider bandwidth supports faster transients; lower gain requires larger shunt for same output swing | Select when system demands >10 kHz response and can accommodate ≥50-mV shunt drop |
Compared with INA212CQDCKRQ1 and INA214CQDCKRQ1, the INA211CQDCKRQ1 offers optimal balance of gain (500 V/V), bandwidth (7 kHz), and offset performance for general-purpose automotive current monitoring where moderate shunt voltage (10–20 mV) and mid-frequency response are required.
Availability
INA211CQDCKRQ1 is available at Aetrix Electronics and suitable for body control module, motor control, electronic stability control, and wireless charging transmitter applications requiring stable component supply across automotive production lifecycles.
Supply support for INA211CQDCKRQ1 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 ICs.
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 supported by the INA211CQDCKRQ1?
The INA211CQDCKRQ1 supports a common-mode input voltage range of –0.3 V to 26 V, enabling direct connection to 12-V and 24-V automotive battery rails in both high-side and low-side configurations without external level-shifting circuitry. This specification is guaranteed across the full –40°C to +125°C operating temperature range.
Does the INA211CQDCKRQ1 require external gain-setting resistors?
No, the INA211CQDCKRQ1 integrates a factory-laser-trimmed 500 V/V gain network internally. No external resistors are needed to set gain, simplifying layout and eliminating resistor tolerance and thermal drift errors. The gain error remains within ±0.5% over temperature due to this monolithic trimming.
How does the REF pin function in the INA211CQDCKRQ1?
The REF pin on the INA211CQDCKRQ1 sets the output voltage offset: VOUT = (VIN+ − VIN−) × 500 + VREF. When grounded, it produces a unipolar 0–5 V output for positive-only current; when biased to V+/2, it enables bidirectional output swing around mid-supply for AC or reversing DC loads.
Is the INA211CQDCKRQ1 compatible with standard SC70 reflow profiles?
Yes, the INA211CQDCKRQ1 in the DCK (SC70-6) package is qualified for standard lead-free reflow soldering per JEDEC J-STD-020. Its 2.00 mm × 1.25 mm footprint and thermal characteristics (RθJA = 227.3°C/W) support reliable assembly in high-density automotive PCBs using industry-standard reflow ovens.
What functional safety documentation is provided for the INA211CQDCKRQ1?
Texas Instruments provides a dedicated functional safety FIT report, failure mode effects analysis (FMEA), and diagnostic coverage summary for the INA211CQDCKRQ1. These documents support ISO 26262 ASIL-B system development but do not constitute full ASIL certification-system-level validation remains the responsibility of the end customer.
INA211CQDCKRQ1 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:
- 7 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 28 µA
- Voltage - Input Offset:
- 0.55 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
INA211CQDCKRQ1 FAQ
1.How can I place an order for INA211CQDCKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA211CQDCKRQ1 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 INA211CQDCKRQ1 reliable?
The price and inventory of INA211CQDCKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA211CQDCKRQ1 is usually 5 days.
3.What payment methods are accepted for INA211CQDCKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA211CQDCKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA211CQDCKRQ1?
INA211CQDCKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA211CQDCKRQ1 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 INA211CQDCKRQ1?
For technical support, including INA211CQDCKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA211CQDCKRQ1 requirements.
6.How does Aetrix verify that INA211CQDCKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA211CQDCKRQ1 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 INA211CQDCKRQ1 meets industry standards.
7.What is the process for return or replacement of INA211CQDCKRQ1?
All INA211CQDCKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA211CQDCKRQ1, 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 INA211CQDCKRQ1 part is unused and in its original packaging.
Return procedure for INA211CQDCKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA211CQDCKRQ1 Tags
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