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Texas Instruments INA240A4EDRQ1
- Part No.:
- INA240A4EDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
INA240A4EDRQ1.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,377
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Product details
Overview
INA240A4EDRQ1 from Texas Instruments is an AEC-Q100 Grade 0 automotive current-sense amplifier with 200 V/V fixed gain, –4 V to 80 V wide common-mode input range, ±25 µV max offset voltage, 132-dB DC CMRR, and enhanced PWM rejection for accurate bidirectional current measurement in high-dV/dt motor and solenoid control systems.
For engineers reviewing the INA240A4EDRQ1 datasheet, INA240A4EDRQ1 pinout, INA240A4EDRQ1 application, or INA240A4EDRQ1 equivalent, this page delivers verified technical context, package-specific pin functions, real-world application mappings, and validated alternative options - all grounded in TI's SBOS808E production data sheet and official device documentation.
Technical Context
The INA240A4EDRQ1 implements a zero-drift, voltage-output current-sense architecture optimized for high-accuracy bidirectional sensing across shunt resistors under large common-mode transients. Its enhanced PWM rejection suppresses ΔV/Δt-induced output artifacts without requiring external filtering or bandwidth trade-offs.
It operates from a single 2.7 V to 5.5 V supply, draws ≤2.4 mA quiescent current, and delivers 400 kHz bandwidth with 9.8 µs settling time (0.5%). The 200 V/V gain enables full-scale output at just 15 mV differential input - supporting low-value shunts (e.g., 1.5 mΩ at 10 A) while maintaining ±0.20% max gain error and 250 nV/°C max offset drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 200 V/V - enables 15-mV full-scale shunt voltage to produce 3-V output, reducing power loss and thermal drift in low-Rsense designs |
| Common-Mode Range | –4 V to 80 V - supports operation below ground during solenoid flyback and high-side battery monitoring up to 80 V |
| Offset Voltage | ±25 µV max - ensures <1% error at 10-mA sense current with 100-mΩ shunt, critical for low-current fault detection |
| DC CMRR | 132 dB - rejects >20 V common-mode shifts with sub-µV output error, essential for stable feedback in noisy motor drives |
| Enhanced PWM Rejection | 93 dB AC CMRR at 50 kHz - suppresses switching noise from PWM-driven actuators without output recovery ripple |
| Operating Temp | –40°C to +150°C (Grade 0) - qualified for under-hood automotive environments including EPS and traction control ECUs |
| Supply Voltage | 2.7 V to 5.5 V - compatible with standard 3.3-V and 5-V automotive microcontroller domains |
Pinout & Package
INA240A4EDRQ1 is packaged in an 8-pin SOIC (D package), 4.90 mm × 3.91 mm body size, rated for Grade 0 (–40°C to +150°C) operation. Pin functions are identical across all INA240-Q1 variants in SOIC packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+ | Analog input | Connects to supply side of shunt resistor; accepts common-mode voltages from –4 V to 80 V |
| IN– | Analog input | Connects to load side of shunt resistor; differential input defines sensed current polarity and magnitude |
| VS | Power supply | 2.7 V–5.5 V single supply; powers internal amplifier and reference circuitry |
| GND | Analog ground | Reference node for all analog signals; must be low-impedance connection to system ground plane |
| OUT | Analog output | Voltage-output stage delivering 200×(VIN+–VIN–) + (VREF1+VREF2)/2; rail-to-rail swing capability |
| REF1, REF2 | Reference inputs | Set output midpoint voltage; connecting both to VS/2 enables bidirectional sensing centered at 2.5 V (5-V supply) |
| NC | No internal connection | Pin 4 in SOIC package - must be left floating or tied to GND per layout best practices |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for –40°C to +150°C ambient operation in safety-critical automotive subsystems including EPS and brake-by-wire |
| Enhanced PWM rejection | Reduces output transient artifacts from fast common-mode edges (e.g., MOSFET switching) without external RC filtering or bandwidth sacrifice |
| Zero-drift architecture | Maintains ±25 µV max offset and 250 nV/°C max drift over full temperature range - enabling accurate low-current sensing down to 10-mV full-scale |
| Bidirectional output configuration | Flexible REF1/REF2 biasing allows unidirectional (0–3 V) or bidirectional (±1.5 V around mid-supply) current measurement modes |
| High AC CMRR at 50 kHz | 93 dB rejection at PWM frequencies ensures clean current waveforms in 20-kHz motor inverters and solenoid drivers |
Applications
| Electronic Power Steering (EPS) | Stability and Traction Control |
|---|---|
Use Scenario: Real-time phase current monitoring in 3-phase EPS motor drivers during assist and return torque events. IC Role / Device Role / Timing Role: High-precision bidirectional current sense amplifier providing isolated, low-latency feedback to MCU-based field-oriented control (FOC) loop. Use Value: Enables <1% current measurement accuracy across –40°C to +150°C, supporting ISO 26262 ASIL-B functional safety requirements without calibration drift. |
Use Scenario: Wheel-speed-independent motor current sensing in electric brake actuation modules during ABS pulse modulation. IC Role / Device Role / Timing Role: Current-sense front-end rejecting 100-V/µs common-mode transients from PWM-controlled brake solenoids. Use Value: Eliminates output recovery ripple that would corrupt torque estimation - critical for closed-loop pressure control stability. |
| Motor and Actuator Control | Solenoid and Valve Control |
Use Scenario: Overcurrent protection and commutation timing in HVAC blower and seat-positioning DC motors. IC Role / Device Role / Timing Role: Voltage-output current amplifier interfacing directly to 12-bit SAR ADC of automotive MCU with minimal signal conditioning. Use Value: 400 kHz bandwidth and 9.8 µs settling support fast fault detection (<10 µs response to short-circuit events), preventing MOSFET destruction. |
Use Scenario: Fuel injector and transmission solenoid current profiling during flyback recovery phase where VCM drops to –4 V. IC Role / Device Role / Timing Role: Negative common-mode capable amplifier measuring bidirectional coil current during PWM on/off transitions. Use Value: –4 V minimum common-mode rating accommodates inductive kickback without clipping or latch-up - ensuring reliable valve timing diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A3EDRQ1 | 100 V/V gain (vs. 200 V/V); otherwise identical specs, pinout, and Grade 0 temp rating | Requires 2× higher shunt voltage (30 mV FS) for same 3-V output - increases I²R loss and thermal drift in high-current solenoids | Select when system-level gain budget allows higher Rsense or when lower sensitivity reduces noise coupling risk in EMI-heavy zones |
| MAX40056ATA+T | 250 V/V gain, –5 V to 65 V CM range, 125°C max ambient (not AEC-Q100 Grade 0); different 8-pin TDFN package | Lacks automotive qualification and negative common-mode support below –2 V - unsuitable for flyback-critical solenoid control | Consider only for non-automotive industrial motor drives where extended temperature is not required and layout permits TDFN rework |
Compared with INA240A3EDRQ1 and MAX40056ATA+T, the INA240A4EDRQ1 uniquely combines AEC-Q100 Grade 0 qualification, –4 V common-mode capability, and 200 V/V gain in SOIC packaging - making it the only drop-in solution for high-accuracy, flyback-tolerant current sensing in EPS and brake-by-wire ECUs.
Availability
INA240A4EDRQ1 is available at Aetrix Electronics and suitable for electronic power steering, stability and traction control, and solenoid valve control requiring stable component supply across automotive production lifecycles.
Supply support for INA240A4EDRQ1 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 INA240-Q1 product line was designed specifically for high-reliability automotive current sensing - emphasizing AEC-Q100 qualification, enhanced PWM rejection, and precision performance across extreme temperature and voltage conditions.
FAQ
What is the maximum common-mode voltage the INA240A4EDRQ1 can handle?
The INA240A4EDRQ1 supports a common-mode input voltage range of –4 V to 80 V. This allows operation below ground during solenoid flyback events and high-side monitoring in 48-V and 60-V battery architectures. The specification is guaranteed over the full Grade 0 temperature range (–40°C to +150°C) and applies to both IN+ and IN– pins independently.
Does the INA240A4EDRQ1 require external calibration for offset or gain error?
No. The INA240A4EDRQ1 uses a zero-drift architecture that maintains ±25 µV maximum input-referred offset voltage and ±0.20% maximum gain error across –40°C to +150°C, eliminating need for system-level calibration. Its 250 nV/°C max offset drift and 2.5 ppm/°C max gain drift ensure long-term stability in automotive under-hood environments.
Can the INA240A4EDRQ1 be used for bidirectional current sensing?
Yes. The INA240A4EDRQ1 supports bidirectional sensing via its dual reference inputs (REF1 and REF2). By setting both references to VS/2, the output centers at mid-supply (e.g., 2.5 V on 5-V supply), enabling positive and negative differential inputs to produce above- and below-midpoint outputs - ideal for H-bridge motor current monitoring.
What package type is used for the INA240A4EDRQ1?
The INA240A4EDRQ1 is supplied in an 8-pin SOIC (D package) with dimensions 4.90 mm × 3.91 mm. This package is qualified for AEC-Q100 Grade 0 operation (–40°C to +150°C ambient) and features the same pinout as other INA240-Q1 SOIC variants, including dedicated NC pin (Pin 4) and symmetric REF1/REF2 configuration.
How does enhanced PWM rejection improve system performance in motor control?
Enhanced PWM rejection in the INA240A4EDRQ1 provides 93 dB AC CMRR at 50 kHz, suppressing large common-mode transients (e.g., 100-V/µs edges) generated by MOSFET switching. This eliminates output recovery ripple and settling delays - enabling clean, real-time current waveforms for precise FOC algorithms and fast overcurrent shutdown without false triggers.
INA240A4EDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- 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 ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
INA240A4EDRQ1 FAQ
1.How can I place an order for INA240A4EDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA240A4EDRQ1 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 INA240A4EDRQ1 reliable?
The price and inventory of INA240A4EDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA240A4EDRQ1 is usually 5 days.
3.What payment methods are accepted for INA240A4EDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA240A4EDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA240A4EDRQ1?
INA240A4EDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA240A4EDRQ1 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 INA240A4EDRQ1?
For technical support, including INA240A4EDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA240A4EDRQ1 requirements.
6.How does Aetrix verify that INA240A4EDRQ1 is sourced from the original manufacturer or authorized distributors?
All INA240A4EDRQ1 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 INA240A4EDRQ1 meets industry standards.
7.What is the process for return or replacement of INA240A4EDRQ1?
All INA240A4EDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA240A4EDRQ1, 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 INA240A4EDRQ1 part is unused and in its original packaging.
Return procedure for INA240A4EDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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