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Texas Instruments INA215BQDCKRQ1
- Part No.:
- INA215BQDCKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA215BQDCKRQ1.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,401
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Product details
Overview
INA215BQDCKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive current-shunt monitor with zero-drift architecture, 75 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 valve actuation systems.
For engineers reviewing the INA215BQDCKRQ1 datasheet, INA215BQDCKRQ1 pinout, INA215BQDCKRQ1 application, or INA215BQDCKRQ1 equivalent, key selection criteria include its 75 V/V gain accuracy (±1% over temperature), 40 kHz bandwidth, 0.5 µV/°C max offset drift, and compatibility with 10-mV full-scale shunt drops in safety-critical automotive subsystems.
Technical Context
The INA215BQDCKRQ1 implements a zero-drift chopper-stabilized amplifier topology enabling precise bidirectional current measurement at low shunt voltages. Its differential input stage supports operation with common-mode voltages up to 26 V-exceeding its own 2.7–26 V supply rail-making it suitable for high-side sensing in 12-V and 24-V automotive power domains.
It features a fixed 75 V/V gain set by internal resistor ratios (R3 = 13.3 kΩ, R4 = 1 MΩ), 105 dB min CMRR at DC, and output swing within 50 mV of V+ and 5 mV of GND under 10-kΩ load. The REF pin allows user-defined output offset, supporting single-supply ADC interfacing without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 75 V/V - sets output = 75 × (VIN+ − VIN−) + VREF; enables 10-mV shunt drop to yield 750-mV full-scale output |
| Offset Voltage (max) | ±100 µV - ensures <0.1% error at 100-mV sense voltage; supports accurate low-current detection |
| Common-Mode Range | –0.3 V to 26 V - permits direct high-side sensing on 24-V battery rails without level translation |
| Supply Voltage Range | 2.7 V to 26 V - powers from MCU I/O rail or main battery; eliminates need for auxiliary LDO |
| Quiescent Current (max) | 100 µA - enables always-on current monitoring in energy-sensitive body control modules |
| Bandwidth | 40 kHz - supports real-time closed-loop motor control and fast overcurrent response |
| Offset Drift (max) | 0.5 µV/°C - maintains <1.25 µV total drift across –40°C to +125°C; critical for thermal stability in engine bay |
Pinout & Package
INA215BQDCKRQ1 is packaged in a 6-pin SC70 (DCK) case measuring 2.00 mm × 1.25 mm, optimized for space-constrained automotive PCBs and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (Pin 1) | Reference input | DC bias point for output; sets output zero point (e.g., 0 V or 2.5 V); must be driven by low-impedance source to preserve CMRR |
| GND (Pin 2) | Ground reference | Analog ground return for internal circuitry; requires low-inductance connection to system ground plane |
| V+ (Pin 3) | Power supply | Single 2.7–26 V supply input; bypass capacitor (0.01–0.1 µF) required between V+ and GND near pin |
| IN+ (Pin 4) | Differential input (+) | Connects to supply side of shunt resistor; high-impedance node; routing must minimize trace inductance |
| IN− (Pin 5) | Differential input (−) | Connects to load side of shunt resistor; matched to IN+ for optimal CMRR; avoid shared return paths |
| OUT (Pin 6) | Output voltage | Voltage-output buffer; drives ADC or comparator directly; swing limited to (V+) − 50 mV and GND + 5 mV |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in automotive ECUs, including body control and powertrain modules |
| Zero-drift architecture | Eliminates 1/f noise and thermal drift; enables stable 10-mV full-scale shunt measurements over lifetime and temperature |
| 75 V/V fixed gain | Optimized trade-off between sensitivity and dynamic range for mid-range current sensing (e.g., 1–50 A with 100–500 µΩ shunts) |
| Functional safety documentation support | Includes FIT rate data, failure mode analysis, and diagnostic coverage guidance for ISO 26262 ASIL-B system integration |
| High CMRR (105 dB min) | Maintains accuracy despite large common-mode transients (e.g., load dump, cranking pulses) in 12-V/24-V vehicle networks |
Applications
| Body Control Module | Valve Control |
|---|---|
Use Scenario: Monitoring current to solenoid valves and lighting loads in door modules and seat controls. IC Role / Device Role / Timing Role: High-side current sensor providing real-time feedback to microcontroller for PWM duty-cycle adjustment and open-load detection. Use Value: Enables 10-mV shunt-based sensing without signal conditioning, reducing BOM count and PCB area while meeting ASIL-B diagnostics requirements. | Use Scenario: Closed-loop current regulation for fuel injector or EGR valve actuators in engine management systems. IC Role / Device Role / Timing Role: Bidirectional current monitor capturing both activation and deactivation transients for valve position estimation. Use Value: 40 kHz bandwidth captures fast valve switching edges; ±100 µV offset ensures sub-amp accuracy during low-duty-cycle idle operation. |
| Motor Control | Electronic Stability Control |
Use Scenario: Phase current sensing in 12-V BLDC fans and wiper motors used in ADAS-related subsystems. IC Role / Device Role / Timing Role: Low-side or high-side shunt amplifier feeding analog inputs of motor control MCU for field-oriented control (FOC). Use Value: 75 V/V gain delivers sufficient SNR for 12-bit ADCs; 0.5 µV/°C drift prevents thermal-induced torque errors during extended operation. | Use Scenario: Battery current monitoring in ESC hydraulic pump modules to detect abnormal draw or short circuits. IC Role / Device Role / Timing Role: Always-on current monitor with <100 µA quiescent current, triggering fault flags via CAN when thresholds are exceeded. Use Value: Supports continuous monitoring during vehicle sleep mode; 26 V common-mode range accommodates 24-V ESC power supplies with load-dump immunity. |
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 | 100 V/V gain, ±100 µV max offset, same SC70 package and temp grade | Better suited for lower-current ranges (<10 A) where higher gain improves ADC resolution | Select when 10-mV shunt drop must produce ≥1 V output for 12-bit ADC full-scale utilization |
| INA226AQDGSRQ1 | I²C digital output, 16-bit delta-sigma ADC, integrated shunt voltage/current/power calculation | Replaces analog signal chain with digital interface; requires MCU firmware support for register access | Choose for systems needing calibrated current/power reporting over bus, not raw analog voltage output |
Compared with INA214BQDCKRQ1 and INA226AQDGSRQ1, INA215BQDCKRQ1 provides the optimal balance of gain (75 V/V), low offset, and analog simplicity for cost-sensitive, high-volume automotive current monitoring where moderate resolution and minimal external components are prioritized.
Availability
INA215BQDCKRQ1 is available at Aetrix Electronics and suitable for body control module, valve control, and motor control applications requiring stable component supply across automotive production lifecycles.
Supply support for INA215BQDCKRQ1 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 designed specifically for robust, high-precision current sensing in automotive power distribution systems-including battery management, motor drives, and load switching-where AEC-Q100 compliance and functional safety readiness are mandatory.
FAQ
What is the maximum common-mode voltage supported by the INA215BQDCKRQ1?
The INA215BQDCKRQ1 supports a common-mode input voltage range of –0.3 V to 26 V, independent of its supply voltage. This allows direct high-side sensing on 24-V automotive battery rails without external level-shifting circuitry. Operation above 26 V requires external transient protection per TI's application guidance, and sustained voltage beyond 26 V may cause permanent damage.
Does the INA215BQDCKRQ1 require external resistors to set gain?
No, the INA215BQDCKRQ1 has a factory-trimmed fixed gain of 75 V/V achieved through internal precision resistor networks (R3 = 13.3 kΩ, R4 = 1 MΩ). No external gain-setting components are needed, simplifying layout and eliminating tolerance-induced errors. This distinguishes it from programmable current-sense amplifiers and ensures consistent performance across units and temperature.
Can the INA215BQDCKRQ1 be used in bidirectional current sensing applications?
Yes, the INA215BQDCKRQ1 supports bidirectional current sensing because its input common-mode range extends to –0.3 V, allowing the shunt voltage polarity to reverse while maintaining valid operation. When paired with a properly biased REF pin (e.g., at mid-supply), the output voltage swings above and below that reference to indicate direction-enabling regenerative braking monitoring or H-bridge current analysis in motor control.
What is the typical quiescent current of the INA215BQDCKRQ1 over temperature?
The INA215BQDCKRQ1 draws ≤100 µA quiescent current at 25°C and ≤115 µA across the full –40°C to +125°C operating range. This ultra-low power consumption enables always-on current monitoring in automotive modules that must meet stringent sleep-mode current budgets, such as body control units with wake-on-current functionality.
Is the INA215BQDCKRQ1 pin-compatible with other devices in the INA21x-Q1 family?
Yes, all INA21x-Q1 devices-including INA210BQDCKRQ1 through INA215BQDCKRQ1-share identical 6-pin SC70 (DCK) packaging and pinout. This allows design reuse across variants: only the gain changes (e.g., 200 V/V → 75 V/V), while PCB layout, decoupling, and interconnect remain unchanged-reducing qualification effort and enabling last-minute gain optimization.
INA215BQDCKRQ1 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:
- 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:
- -55°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
INA215BQDCKRQ1 FAQ
1.How can I place an order for INA215BQDCKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA215BQDCKRQ1 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 INA215BQDCKRQ1 reliable?
The price and inventory of INA215BQDCKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA215BQDCKRQ1 is usually 5 days.
3.What payment methods are accepted for INA215BQDCKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA215BQDCKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA215BQDCKRQ1?
INA215BQDCKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA215BQDCKRQ1 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 INA215BQDCKRQ1?
For technical support, including INA215BQDCKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA215BQDCKRQ1 requirements.
6.How does Aetrix verify that INA215BQDCKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA215BQDCKRQ1 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 INA215BQDCKRQ1 meets industry standards.
7.What is the process for return or replacement of INA215BQDCKRQ1?
All INA215BQDCKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA215BQDCKRQ1, 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 INA215BQDCKRQ1 part is unused and in its original packaging.
Return procedure for INA215BQDCKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA215BQDCKRQ1 Tags
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Texas Instruments
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