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Texas Instruments INA240A4QDRQ1
- Part No.:
- INA240A4QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
INA240A4QDRQ1.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,891
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Product details
Overview
INA240A4QDRQ1 from Texas Instruments is an AEC-Q100 Grade 0 automotive current-sense amplifier with bidirectional sensing capability, 200 V/V fixed gain, –4 V to 80 V wide common-mode input range, ±25 µV max offset voltage, and enhanced PWM rejection for motor/solenoid control systems operating up to +150°C ambient.
For engineers reviewing the INA240A4QDRQ1 datasheet, INA240A4QDRQ1 pinout, INA240A4QDRQ1 application, or INA240A4QDRQ1 equivalent, key selection criteria include its 200 V/V gain accuracy (±0.20% max), 132-dB DC CMRR, 93-dB AC CMRR at 50 kHz, 400-kHz bandwidth, and SOIC-8 package compatibility with high-temperature solenoid valve and EPS motor control designs.
Technical Context
The INA240A4QDRQ1 implements a zero-drift, voltage-output current-sense architecture optimized for bidirectional shunt monitoring in high-dV/dt PWM environments. Its enhanced PWM rejection suppresses large common-mode transients before amplification using internal high-CMRR front-end techniques-not just bandwidth extension-enabling accurate output during flyback periods in solenoid drivers.
It operates from a single 2.7 V to 5.5 V supply, draws ≤2.4 mA quiescent current, and delivers rail-to-rail output swing (VS – 0.2 V / GND + 10 mV) across –40°C to +150°C. The dual reference pins (REF1/REF2) allow configurable unidirectional or bidirectional output midpoint setting without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 200 V/V - Enables precise low-side current measurement with 15-mV full-scale shunt drop at 10-A load, reducing power loss vs lower-gain alternatives. |
| Common-Mode Range | –4 V to 80 V - Supports operation below ground during solenoid flyback and high-side sensing in 48-V automotive systems. |
| DC CMRR | 132 dB - Rejects battery rail noise and EMI in electric power steering modules without signal degradation. |
| Offset Voltage | ±25 µV max - Ensures <0.25% error at 10-mV shunt drop, critical for low-current fault detection in traction control. |
| Bandwidth | 400 kHz - Captures fast overcurrent events in motor drives while maintaining <2% THD+N up to 100 kHz. |
| Operating Temp | –40°C to +150°C (Grade 0) - Qualified for under-hood solenoid valve control where ambient exceeds 125°C. |
| Supply Voltage | 2.7 V to 5.5 V - Compatible with standard 3.3-V or 5-V automotive microcontroller domains without LDO overhead. |
Pinout & Package
INA240A4QDRQ1 is packaged in an 8-pin SOIC (D package), 4.90 mm × 3.91 mm body size, with thermal resistance RθJA = 113.5°C/W. Pin functions are validated per TI SBOS808E Rev E.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+ | Analog input | Connects to supply side of shunt; accepts common-mode voltages down to –4 V for flyback tolerance. |
| IN– | Analog input | Connects to load side of shunt; differential input pair enables bidirectional current polarity detection. |
| VS | Power supply | 2.7–5.5 V single supply; powers internal zero-drift core and output stage with ≤2.4 mA total draw. |
| GND | Analog ground | Reference for all analog circuitry; must be tied to low-impedance shunt return path to minimize error. |
| OUT | Analog output | Voltage output = 200 × (VIN+ – VIN–) + (VREF1 – VREF2)/2; rail-to-rail capable into 10-kΩ load. |
| REF1, REF2 | Reference inputs | Set output midpoint: tie both to VS/2 for bidirectional mode; tie REF2 to GND and REF1 to VS for unidirectional. |
| NC | No connection | Pin 4 in SOIC package - reserved; connect to GND or leave floating per TI recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for –40°C to +150°C ambient operation - supports placement in engine bay solenoid control modules. |
| Enhanced PWM rejection | Suppresses ΔV/Δt transients without bandwidth trade-offs - eliminates output ringing during 20-kHz motor PWM switching. |
| Zero-drift architecture | ±250 nV/°C max offset drift - maintains sub-0.5% gain error across full temperature range in EPS systems. |
| Configurable bidirectional output | REF1/REF2 pins enable software-selectable unidirectional/bidirectional modes - simplifies firmware for multi-function actuators. |
| High AC CMRR at 50 kHz | 93 dB - preserves signal integrity in noisy 48-V traction inverters where PWM harmonics dominate near 50 kHz. |
Applications
| Electronic Power Steering | Stability and Traction Control |
|---|---|
Use Scenario: Real-time phase current monitoring in 3-phase EPS motor drivers during rapid torque transients. IC Role / Device Role / Timing Role: Bidirectional current-sense amplifier providing isolated, high-bandwidth feedback to MCU for field-oriented control. Use Value: 400-kHz bandwidth and 200-V/V gain enable detection of 5-A overcurrent within 10 µs, preventing MOSFET shoot-through damage. |
Use Scenario: Wheel-speed-independent brake actuator current profiling during ABS modulation cycles. IC Role / Device Role / Timing Role: High-CMRR shunt monitor capturing bidirectional solenoid coil current during 100-Hz pressure pulsing. Use Value: –4-V to 80-V common-mode range accommodates negative flyback voltage, eliminating need for external clamping diodes. |
| Motor and Actuator Control | Solenoid and Valve Control |
Use Scenario: Closed-loop current regulation in HVAC blower motors powered by 48-V battery systems. IC Role / Device Role / Timing Role: Precision current sensor interfacing directly to 12-bit ADC of automotive MCU with minimal signal conditioning. Use Value: ±25-µV offset ensures <1% error at 2-A nominal current, enabling efficient torque ripple suppression. |
Use Scenario: Fuel injector driver current profiling in diesel common-rail systems with 120-V transient spikes. IC Role / Device Role / Timing Role: High-voltage-tolerant sense amplifier rejecting fast dV/dt noise on injector supply rail. Use Value: Enhanced PWM rejection reduces output recovery time from >10 µs to <1 µs after 100-V/µs transients, improving injection timing accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A3QDRQ1 | 100 V/V gain, identical specs otherwise - 10× lower gain reduces sensitivity to shunt resistor tolerance and layout parasitics. | Better suited for higher-current (>20 A) applications where 15-mV shunt drop is impractical; requires larger RSENSE. | Select when system full-scale current exceeds 15 A and PCB space allows ≥10-mΩ shunt; avoids gain-related noise amplification. |
| MAX40056ATA+T | 250 V/V gain, –5 V to 65 V CM range, 125°C max ambient - lacks AEC-Q100 Grade 0 qualification and has lower 120-dB DC CMRR. | Targeted at industrial motor drives; not certified for under-hood automotive use above 125°C ambient. | Consider only for non-safety-critical 125°C-limited applications where higher gain offsets narrower CM range and missing Grade 0 rating. |
Compared with INA240A3QDRQ1 and MAX40056ATA+T, the INA240A4QDRQ1 uniquely combines 200-V/V precision gain, Grade 0 temperature rating, and –4-V to 80-V operation - making it the only option qualified for high-accuracy, high-temperature solenoid control in modern 48-V automotive architectures.
Availability
INA240A4QDRQ1 is available at Aetrix Electronics and suitable for electronic power steering, stability and traction control, motor and actuator control, and solenoid and valve control requiring stable component supply across automotive production lifecycles.
Supply support for INA240A4QDRQ1 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 delivering analog and embedded processing solutions, with deep expertise in precision analog, automotive ICs, and functional safety design.
The INA240-Q1 product line was developed specifically for high-reliability automotive current sensing - emphasizing AEC-Q100 qualification, enhanced PWM rejection, and wide common-mode operation in EPS, braking, and powertrain subsystems.
FAQ
What is the maximum common-mode voltage the INA240A4QDRQ1 can handle?
The INA240A4QDRQ1 supports a common-mode input voltage range of –4 V to 80 V. This allows it to operate safely during negative flyback transients in solenoid applications and interface with high-side shunts in 48-V automotive systems. The specification is guaranteed across its full operating temperature range of –40°C to +150°C, and applies independently of the 2.7-V to 5.5-V supply voltage.
Does the INA240A4QDRQ1 require external calibration for offset or gain error?
No, the INA240A4QDRQ1 does not require external calibration. Its zero-drift architecture achieves ±25 µV maximum input-referred offset voltage and ±0.20% maximum gain error over temperature, with drift specifications of ±250 nV/°C and ±2.5 ppm/°C respectively. These factory-trimmed parameters meet automotive-grade accuracy requirements without user adjustment.
Can the INA240A4QDRQ1 be used in bidirectional current sensing applications?
Yes, the INA240A4QDRQ1 supports bidirectional current sensing via its dual reference pins (REF1 and REF2). By setting REF1 = VS and REF2 = GND, the output centers at VS/2, allowing positive and negative differential inputs to produce corresponding above- and below-midpoint outputs. This configuration is explicitly validated in TI's SBOS808E datasheet for motor phase current monitoring.
What package type is used for the INA240A4QDRQ1, and is it RoHS-compliant?
The INA240A4QDRQ1 is supplied in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, with lead finish NiPdAu and RoHS-compliant terminal plating. It meets JEDEC MS-012 standards and carries Texas Instruments' standard automotive green material compliance certification, including exemption 7a for lead in glass frits.
How does the enhanced PWM rejection in the INA240A4QDRQ1 improve system performance?
The enhanced PWM rejection in the INA240A4QDRQ1 suppresses large common-mode transients (ΔV/Δt) before amplification using proprietary front-end topology - not just high bandwidth. This reduces output recovery time from >10 µs to <1 µs after 100-V/µs transients, eliminating measurement errors during motor PWM dead-time and improving overcurrent response fidelity in EPS and brake control units.
INA240A4QDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 400 kHz
- Current - Input Bias:
- 90 µA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 1.8mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
INA240A4QDRQ1 FAQ
1.How can I place an order for INA240A4QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA240A4QDRQ1 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 INA240A4QDRQ1 reliable?
The price and inventory of INA240A4QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA240A4QDRQ1 is usually 5 days.
3.What payment methods are accepted for INA240A4QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA240A4QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA240A4QDRQ1?
INA240A4QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA240A4QDRQ1 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 INA240A4QDRQ1?
For technical support, including INA240A4QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA240A4QDRQ1 requirements.
6.How does Aetrix verify that INA240A4QDRQ1 is sourced from the original manufacturer or authorized distributors?
All INA240A4QDRQ1 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 INA240A4QDRQ1 meets industry standards.
7.What is the process for return or replacement of INA240A4QDRQ1?
All INA240A4QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA240A4QDRQ1, 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 INA240A4QDRQ1 part is unused and in its original packaging.
Return procedure for INA240A4QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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