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Texas Instruments INA215CQDCKRQ1
- Part No.:
- INA215CQDCKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA215CQDCKRQ1.pdf
- Description:
- INA215-Q1 AEC-Q100, 26V, BI-DIRE
- Quantity:
- Payment:
- Shipping:
Inventory:1,065
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Product details
Overview
INA215CQDCKRQ1 from Texas Instruments is an automotive-grade, zero-drift current-shunt monitor optimized for bidirectional high-side or low-side current sensing in 12-V and 24-V automotive systems. It delivers 75 V/V fixed gain, ±60 µV max input offset voltage (at 25°C), 0.5 µV/°C max offset drift, and operates from 2.7 V to 26 V supply across –40°C to +125°C - enabling accurate 10-mV full-scale shunt measurements in body control modules and motor control feedback loops.
For engineers reviewing the INA215CQDCKRQ1 datasheet, INA215CQDCKRQ1 pinout, INA215CQDCKRQ1 application, or INA215CQDCKRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 75 V/V gain accuracy (±0.5% over temperature), 40 kHz bandwidth, SC70-6 package footprint, and functional safety documentation support for ISO 26262 ASIL-B–capable designs.
Technical Context
The INA215CQDCKRQ1 implements a precision zero-drift chopper-stabilized amplifier architecture with rail-to-rail output swing and integrated reference input (REF) for offset adjustment. Its differential input stage supports common-mode voltages from –0.1 V to 26 V - independent of supply - enabling direct connection to high-side shunts on 24-V battery rails while powered from a 3.3-V or 5-V domain.
It features 100 µA max quiescent current, 25 nV/√Hz input-referred noise, and 0.4 V/µs slew rate. Gain error is specified at ±0.5% over temperature for Version C, with 10 ppm/°C gain drift and 140 dB CMRR at DC - critical for rejecting battery ripple and load transients in automotive power distribution networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Fixed Gain | 75 V/V - sets output scaling for 10-mV shunt drop → 750-mV full-scale output, simplifying ADC interface in 12-bit systems |
| Input Offset Voltage (max) | ±60 µV at 25°C - enables ≤10-mV full-scale shunt sensing with <0.6% error at minimum current |
| Offset Drift (max) | 0.5 µV/°C - contributes <65 µV total drift over –40°C to +125°C, preserving accuracy in under-hood environments |
| Common-Mode Range | –0.1 V to 26 V - supports high-side sensing on 24-V battery rails even with negative transients during load dump |
| Supply Voltage Range | 2.7 V to 26 V - allows single-supply operation from MCU I/O rails or direct battery connection without LDO |
| Bandwidth | 40 kHz - sufficient for PWM motor current monitoring up to 10-kHz switching frequencies with <1% gain error |
| Quiescent Current (max) | 100 µA - enables always-on current monitoring in low-power wake-up circuits without battery drain penalty |
Pinout & Package
INA215CQDCKRQ1 is housed in a 6-pin SC70 package (2.00 mm × 1.25 mm, 0.65-mm pitch), optimized for space-constrained automotive PCBs and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (Pin 1) | Reference input | Accepts 0 V to V+ to set output common-mode level; enables bidirectional current sensing with single-supply operation |
| GND (Pin 2) | Ground reference | Return path for internal circuitry and output stage; must be connected to system power ground with low-impedance trace |
| V+ (Pin 3) | Positive supply | Single 2.7–26 V supply input; powers amplifier core and output buffer; decoupling capacitor required at pin |
| IN+ (Pin 4) | Non-inverting input | Connects to high-potential side of shunt resistor; defines current direction polarity for high-side sensing |
| IN– (Pin 5) | Inverting input | Connects to low-potential side of shunt resistor; differential voltage across IN+ and IN– is amplified by 75× |
| OUT (Pin 6) | Analog output | Voltage-output stage delivering (ISHUNT × RSHUNT) × 75 + VREF; rail-to-rail swing supports 0–V+ dynamic range |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Rated for –40°C to +125°C ambient operation - validated for engine bay, transmission, and chassis control modules |
| Zero-drift architecture | Chopper-stabilized design ensures <65 µV total offset drift over full temperature range - eliminates calibration in production |
| Functional safety documentation | Includes FIT rate, failure mode analysis, and diagnostic coverage data - accelerates ISO 26262 ASIL-B system certification |
| High CMRR (140 dB) | Rejects battery ripple and EMI coupling on high-side shunts - maintains accuracy despite 26-V common-mode noise |
| Low quiescent current | 100 µA max draw enables continuous current monitoring in always-on vehicle domains without compromising sleep current budgets |
Applications
| Body Control Module | Motor Control Feedback |
|---|---|
Use Scenario: Real-time monitoring of door lock actuator, headlight LED, or HVAC blower current for fault detection and energy accounting. IC Role / Device Role / Timing Role: High-side current-shunt monitor interfacing to 12-V battery rail, providing analog output to MCU ADC. Use Value: Enables precise overcurrent trip at 10-mA resolution using 100-mΩ shunt, reducing false positives vs. comparator-based solutions. | Use Scenario: Closed-loop phase current sensing in 48-V mild hybrid starter-generator inverters with PWM switching up to 20 kHz. IC Role / Device Role / Timing Role: Low-latency, high-CMRR current amplifier feeding isolated sigma-delta ADC; supports bidirectional regenerative braking measurement. Use Value: 40-kHz bandwidth and 0.4 V/µs slew rate ensure <1% gain error at 10-kHz fundamental, improving torque control fidelity. |
| Electronic Stability Control | Wireless Charging Transmitter |
Use Scenario: Monitoring ABS solenoid coil current during active braking to verify valve actuation and detect open-circuit faults. IC Role / Device Role / Timing Role: Low-side current sensor placed between solenoid and ground, referenced to chassis GND, with REF tied to 2.5 V for bidirectional output swing. Use Value: ±60 µV offset enables detection of <10 mA solenoid hold current - critical for fail-safe diagnostics per ISO 26262. | Use Scenario: Input current monitoring in GaN-based 11-kW wireless charging pad to regulate primary coil power and prevent thermal runaway. IC Role / Device Role / Timing Role: High-side monitor on 400-V DC link input, operating with 24-V auxiliary supply and 26-V common-mode tolerance. Use Value: –0.1 V to 26 V common-mode range accommodates negative transients during fast turn-off, preventing latch-up during fault events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA226AQDGSRQ1 | Digital output (I²C), 16-bit delta-sigma ADC, internal 0.1-Ω shunt, 0.1% gain accuracy, but higher 350-µA quiescent current | Replaces analog signal chain with digital bus interface; requires firmware integration and I²C pull-ups | Choose when system-level digital monitoring, multi-channel aggregation, or programmable gain is required - not for direct analog ADC replacement |
| MAX40056ATA+T | 75 V/V gain, 500-kHz bandwidth, ±150-µV offset, 1.2-mA quiescent current, 8-pin TDFN package | Higher speed and wider supply range (2.7–60 V), but larger footprint and no AEC-Q100 Grade 1 rating | Choose for non-automotive industrial applications requiring faster response or >26-V operation - not for ASIL-B or space-constrained automotive PCBs |
Compared with INA226AQDGSRQ1 and MAX40056ATA+T, the INA215CQDCKRQ1 uniquely balances AEC-Q100 Grade 1 compliance, ultra-low quiescent current, SC70-6 footprint, and 75 V/V precision gain - making it optimal for cost-sensitive, space-constrained, always-on automotive current monitoring where analog interface simplicity is prioritized.
Availability
INA215CQDCKRQ1 is available at Aetrix Electronics and suitable for body control modules, motor control feedback loops, electronic stability control systems, and wireless charging transmitters requiring stable component supply throughout automotive production lifecycles.
Supply support for INA215CQDCKRQ1 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 electronics and functional safety design.
The INA21x-Q1 product line was developed specifically for high-accuracy, high-reliability current sensing in automotive power distribution, motor control, and battery management systems - emphasizing AEC-Q100 qualification, zero-drift stability, and system-level functional safety readiness.
FAQ
What is the maximum common-mode voltage supported by the INA215CQDCKRQ1?
The INA215CQDCKRQ1 supports a common-mode input voltage range of –0.1 V to 26 V, independent of supply voltage. This allows direct high-side sensing on 24-V automotive battery rails, including transient conditions like load dump. The specification is guaranteed for Versions B and C per the SBOS475J datasheet, and the INA215CQDCKRQ1 is a Version C device.
Does the INA215CQDCKRQ1 require external components for stable operation?
Yes - the INA215CQDCKRQ1 requires a 0.1-µF ceramic bypass capacitor between V+ and GND, placed as close as possible to the pins. A 0.01-µF capacitor is recommended between CBYPASS and GND if used. No external gain-setting resistors are needed since it features a fixed 75 V/V gain. Layout guidelines emphasize short, matched traces for IN+ and IN– to minimize noise pickup.
Is the INA215CQDCKRQ1 pin-compatible with other devices in the INA21x-Q1 family?
Yes - all INA21x-Q1 devices, including INA215CQDCKRQ1, share identical 6-pin SC70 (DCK) pinout and package dimensions. This allows drop-in substitution among family members (e.g., INA213-Q1, INA214-Q1) when only gain adjustment is required, provided layout and reference voltage configuration match the new gain's output range.
What functional safety documentation is available for the INA215CQDCKRQ1?
Texas Instruments provides functional safety documentation for the INA215CQDCKRQ1, including FMEDA reports, FIT rate data (122 failures per billion hours), and diagnostic coverage analysis - supporting ISO 26262 ASIL-B system development. These documents are accessible via TI's functional safety portal under the INA21x-Q1 product folder.
Can the INA215CQDCKRQ1 measure bidirectional current?
Yes - the INA215CQDCKRQ1 supports bidirectional current sensing when the REF pin is biased to a mid-supply voltage (e.g., V+/2). With REF = 2.5 V and V+ = 5 V, the output swings from ~0.005 V (negative full-scale) to ~4.95 V (positive full-scale), enabling unambiguous direction detection using a single-ended ADC input.
INA215CQDCKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 40 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
INA215CQDCKRQ1 FAQ
1.How can I place an order for INA215CQDCKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA215CQDCKRQ1 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 INA215CQDCKRQ1 reliable?
The price and inventory of INA215CQDCKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA215CQDCKRQ1 is usually 5 days.
3.What payment methods are accepted for INA215CQDCKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA215CQDCKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA215CQDCKRQ1?
INA215CQDCKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA215CQDCKRQ1 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 INA215CQDCKRQ1?
For technical support, including INA215CQDCKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA215CQDCKRQ1 requirements.
6.How does Aetrix verify that INA215CQDCKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA215CQDCKRQ1 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 INA215CQDCKRQ1 meets industry standards.
7.What is the process for return or replacement of INA215CQDCKRQ1?
All INA215CQDCKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA215CQDCKRQ1, 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 INA215CQDCKRQ1 part is unused and in its original packaging.
Return procedure for INA215CQDCKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA215CQDCKRQ1 Tags
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