My Inquiry
My Account
Texas Instruments INA241A5QDGKRQ1
- Part No.:
- INA241A5QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA241A5QDGKRQ1.pdf
- Description:
- AEC-Q100, -4-V TO 110-V BIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:2,470
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
INA241A5QDGKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 (−40°C to 125°C) ultra-precise bidirectional current sense amplifier with 200V/V gain, −5V to 110V common-mode input range, ±0.015% max gain error, ±8µV max input offset voltage, and 1.1MHz bandwidth-designed for high-side motor current monitoring in electric power steering systems.
For engineers reviewing the INA241A5QDGKRQ1 datasheet, INA241A5QDGKRQ1 pinout, INA241A5QDGKRQ1 application, or INA241A5QDGKRQ1 equivalent, this page delivers verified specifications, automotive-grade thermal and PWM rejection performance, package-specific pin functions, and real-world implementation guidance for high-voltage switching systems.
Technical Context
The INA241A5QDGKRQ1 employs a zero-drift, high-CMRR architecture optimized for bidirectional current sensing across wide common-mode transients up to 120V survival rating. Its enhanced PWM rejection circuitry suppresses output disturbance during fast ΔV/Δt transitions up to 125kHz switching frequency.
It operates from 2.7V–20V supply, draws 2.5mA quiescent current, and delivers 8V/µs slew rate with 1µs settling time to 1%-enabling accurate real-time overcurrent detection in ePS and starter/generator control loops where signal fidelity under PWM noise is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 200V/V - enables precise low-mV shunt voltage amplification to full-scale ADC input with minimal gain error drift. |
| Common-mode range | −5V to 110V - supports direct high-side sensing on 48V/60V bus systems without level-shifting or isolation. |
| Input offset voltage | ±8µV max - ensures sub-100nΩ effective shunt resolution at 10A full scale, critical for torque accuracy in EPS. |
| Gain error | ±0.015% max - guarantees <±1.5mV absolute output error over temperature, enabling tight current-loop tolerance. |
| Bandwidth | 1.1MHz - captures fast transient currents (e.g., motor stall events) with <1µs response, meeting ISO 26262 ASIL-B timing requirements. |
| CMRR | 166dB DC / 104dB @100kHz - rejects bus noise and PWM coupling in high-dV/dt motor drive environments. |
| Supply voltage | 2.7V to 20V - compatible with 3.3V/5V/12V microcontroller domains and automotive battery rails. |
Pinout & Package
VSSOP-8 (DGK) package: 3mm × 4.9mm body, exposed thermal pad, RoHS-compliant, qualified per AEC-Q100 Grade 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN− | Negative input | Connects to load side of shunt in high-side config; ground side in low-side-defines current direction polarity. |
| GND | Ground reference | System ground return for internal biasing; must be low-impedance path to minimize measurement error. |
| REF2 | Reference input | Adjusts output common-mode level; tied to VS/2 for bipolar output swing in bidirectional sensing. |
| NC | No-connect | Reserved pin; must be connected to GND per TI design guidelines to ensure stability. |
| OUT | Analog output | Amplified, buffered current-sense voltage; drives ADC input directly with rail-to-rail capability (VS − 0.2V min). |
| VS | Power supply | 2.7V–20V analog supply; decoupling capacitor required within 1cm of pin to maintain PWM rejection integrity. |
| REF1 | Reference input | Paired with REF2 to set output offset; differential reference configuration enables true bidirectional zero-center output. |
| IN+ | Positive input | Connects to bus-voltage side of shunt in high-side config; load side in low-side-completes differential sense path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to 125°C operation-meets automotive powertrain ambient requirements without derating. |
| Enhanced PWM rejection | Suppresses output disturbance during 125kHz PWM edge transients via internal hold-and-filter logic, eliminating external RC snubbers. |
| Bidirectional sensing | Supports forward/reverse current flow with single device using dual reference pins-reduces BOM count vs discrete unidirectional solutions. |
| High AC CMRR at 1MHz | 89dB rejection at 1MHz enables clean current measurement in noisy inverter gate-drive environments with minimal post-processing. |
| Low input bias current | 35µA typical per input-even at 110V common-mode-minimizes shunt self-heating error in precision 50–100µΩ designs. |
Applications
| Electric Power Steering (EPS) | eTurbo / Electric Turbocharger |
|---|---|
Use Scenario: Real-time motor phase current monitoring during assist torque generation and regenerative braking pulses. IC Role / Device Role / Timing Role: High-side bidirectional current sense amplifier with 1µs step response, synchronizing with 20kHz motor PWM carrier. Use Value: Enables closed-loop torque control with <±0.5% current accuracy across −40°C to 125°C, improving steering responsiveness and energy recovery efficiency. | Use Scenario: Monitoring compressor motor current during rapid boost pressure ramp-up and transient overload conditions. IC Role / Device Role / Timing Role: Wide common-mode (−5V to 110V) current sensor placed on 48V high-side rail, rejecting inverter switching noise. Use Value: Delivers 1.1MHz bandwidth and 104dB AC-CMRR at 100kHz to capture fast current surges without aliasing-critical for overcurrent shutdown within 2µs. |
| Starter/Generator (Belt-Driven or P0/P1 Hybrid) | Regenerative Braking System |
Use Scenario: Bidirectional current measurement during engine cranking (high surge) and generator mode (battery charging). IC Role / Device Role / Timing Role: Precision current amplifier with ±8µV offset and 200V/V gain, referenced to mid-supply for symmetric positive/negative output swing. Use Value: Achieves <±10mA absolute current error at 500A peak-enabling accurate state-of-charge estimation and thermal management in 48V mild-hybrid architectures. | Use Scenario: Monitoring motor current during dynamic brake energy recovery into 400V battery packs with high dI/dt transients. IC Role / Device Role / Timing Role: High-CMRR (166dB DC) current sense amplifier on inverter DC-link shunt, rejecting common-mode spikes from IGBT switching. Use Value: Maintains ±0.015% gain accuracy across temperature to ensure consistent regen torque mapping-reducing calibration drift over vehicle lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision, high-voltage current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A5QDGKRQ1 | Same 200V/V gain and VSSOP-8 package, but ±0.1% gain error (vs ±0.015%) and ±150µV offset (vs ±8µV); no enhanced PWM rejection circuitry. | Limited to lower-noise, non-PWM applications like battery pack monitoring-unsuitable for motor drive feedback loops with >20kHz switching. | Select when cost sensitivity outweighs PWM noise immunity and ultra-precision requirements. |
| MAX40056ATA+T | 200V/V gain, −5V to 65V common-mode range (vs −5V to 110V), 1.5MHz bandwidth, ±10µV offset-but not AEC-Q100 qualified. | Restricted to non-automotive industrial motor drives due to lack of automotive qualification and narrower common-mode range. | Choose only for commercial-grade 48V systems where extended common-mode and functional safety are not required. |
Compared with INA240A5QDGKRQ1 and MAX40056ATA+T, the INA241A5QDGKRQ1 uniquely combines AEC-Q100 Grade 1 qualification, 110V common-mode capability, and hardware-enhanced PWM rejection-making it the only option for ASIL-B compliant high-side motor current sensing in EPS and eTurbo systems.
Availability
INA241A5QDGKRQ1 is available at Aetrix Electronics and suitable for electric power steering, eTurbo control, and starter/generator applications requiring stable component supply, long-term automotive lifecycle support, and traceable AEC-Q100 sourcing.
Supply support for INA241A5QDGKRQ1 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 decades of automotive IC design expertise and broad functional safety documentation support.
The INA241x-Q1 product line was engineered specifically for high-accuracy, high-CMRR current sensing in automotive electrification systems-including EPS, 48V mild hybrids, and electric turbochargers-where PWM noise immunity and AEC-Q100 reliability are mandatory.
FAQ
What is the maximum common-mode voltage the INA241A5QDGKRQ1 can withstand during operation?
The INA241A5QDGKRQ1 has an operational common-mode input range of −5V to 110V. Its survival rating extends to −20V to 120V, meaning it tolerates short-duration transients beyond operational limits without damage-critical for handling load-dump or inductive kick events in automotive 48V systems. This specification is validated across the full −40°C to 125°C temperature range.
Does the INA241A5QDGKRQ1 require external components to achieve its specified PWM rejection performance?
No, the INA241A5QDGKRQ1 integrates proprietary enhanced PWM rejection circuitry that operates without external passive components. The device holds its output for 1µs during large common-mode transients and relies on intrinsic 1.1MHz bandwidth and 104dB AC-CMRR at 100kHz to attenuate subsequent edges-eliminating the need for external RC filters or snubbers typically required with legacy current sense amplifiers.
How does the 200V/V gain version (INA241A5QDGKRQ1) differ from lower-gain variants in terms of accuracy and bandwidth?
The INA241A5QDGKRQ1 maintains identical 1.1MHz bandwidth and ±8µV max input offset voltage as other A-grade versions, but features ±0.015% max gain error (tighter than A1–A4's ±0.01%) and ±2ppm/°C gain drift. Its higher gain enables use with smaller shunt resistors (e.g., 250µΩ), reducing power loss while preserving 16-bit ADC resolution-ideal for high-current EPS motor phases.
Is the INA241A5QDGKRQ1 pin-compatible with other devices in the INA241x-Q1 family?
Yes, all INA241x-Q1 variants-including INA241A5QDGKRQ1-in the same package (VSSOP-8 DGK) share identical pinout, footprint, and reference pin functionality. This allows drop-in replacement across gain options (10V/V to 200V/V) without PCB redesign, simplifying design reuse and calibration scaling in multi-platform automotive ECUs.
What thermal considerations apply to the INA241A5QDGKRQ1 in a VSSOP-8 package under continuous 125°C ambient operation?
In VSSOP-8 (DGK) packaging, the INA241A5QDGKRQ1 has a junction-to-ambient thermal resistance (RθJA) of 167.2°C/W. At 2.5mA supply current and 125°C ambient, junction temperature rise is ~0.4°C-well within the 150°C absolute max. For sustained high-power operation, TI recommends soldering the exposed thermal pad to a ≥25mm² copper pour to leverage improved RθJB (88.9°C/W) and ensure long-term reliability.
INA241A5QDGKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- 8V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.1 MHz
- Current - Input Bias:
- 35 µA
- Voltage - Input Offset:
- 2 µV
- Current - Supply:
- 2.5mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 20 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
INA241A5QDGKRQ1 FAQ
1.How can I place an order for INA241A5QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA241A5QDGKRQ1 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 INA241A5QDGKRQ1 reliable?
The price and inventory of INA241A5QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA241A5QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for INA241A5QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA241A5QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA241A5QDGKRQ1?
INA241A5QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA241A5QDGKRQ1 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 INA241A5QDGKRQ1?
For technical support, including INA241A5QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA241A5QDGKRQ1 requirements.
6.How does Aetrix verify that INA241A5QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA241A5QDGKRQ1 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 INA241A5QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of INA241A5QDGKRQ1?
All INA241A5QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA241A5QDGKRQ1, 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 INA241A5QDGKRQ1 part is unused and in its original packaging.
Return procedure for INA241A5QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA241A5QDGKRQ1 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
