My Inquiry
My Account
Texas Instruments INA241A1QDRQ1
- Part No.:
- INA241A1QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
INA241A1QDRQ1.pdf
- Description:
- AEC-Q100, -4V TO 110V BIDIRECTIO
- Quantity:
- Payment:
- Shipping:
Inventory:4,044
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
INA241A1QDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 (−40°C to 125°C) ultra-precise bidirectional current sense amplifier optimized for high-voltage motor control and power conversion systems. It delivers ±0.01% max gain error, ±10 µV max input offset voltage, 1.1 MHz bandwidth, and −5 V to 110 V common-mode input range - enabling accurate inline or high-side shunt monitoring in eTurbo, EPS, and regenerative braking circuits.
For engineers reviewing the INA241A1QDRQ1 datasheet, INA241A1QDRQ1 pinout, INA241A1QDRQ1 application, or INA241A1QDRQ1 equivalent, this page provides verified technical context, validated pin functions for SOT23-8 packaging, real-world automotive use cases, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The INA241A1QDRQ1 employs a zero-drift, high-CMRR topology with integrated enhanced PWM rejection circuitry that suppresses common-mode transients up to 125 kHz - critical for switching-node current sensing in motor drives. Its input stage operates independently of supply voltage, supporting common-mode voltages beyond VS (e.g., −5 V to 110 V at 2.7 V–20 V supply).
It features dual reference inputs (REF1/REF2) enabling programmable output offset and bidirectional measurement without external level-shifting. The 8-pin SOT23 package integrates NC pins tied to GND per TI's pinout specification, ensuring robust layout for high dv/dt environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 10 V/V - sets full-scale output to 1 V per 100 mV shunt drop; enables high-resolution low-current sensing with minimal noise amplification. |
| Common-mode Range | −5 V to 110 V - supports direct high-side sensing on 48 V or 96 V bus systems without level-shifting or isolation. |
| Input Offset Voltage | ±10 µV max - ensures ≤0.1% error at 100 mV sense voltage; drift of ±0.1 µV/°C maintains accuracy across automotive temperature range. |
| Bandwidth | 1.1 MHz - captures fast overcurrent events (e.g., short-circuit detection in <1 µs) while maintaining stability with 1 nF capacitive loads. |
| CMRR | 166 dB DC, 104 dB at 100 kHz - rejects bus noise during PWM commutation, preventing false trip signals in EPS or starter/generator control. |
| Supply Range | 2.7 V to 20 V - compatible with 3.3 V, 5 V, or 12 V system rails; draws only 2.5 mA quiescent current for low-power operation. |
| Enhanced PWM Rejection | Validated to 125 kHz - holds output stable for 1 µs during fast common-mode edges, then attenuates residual transients via high AC-CMRR. |
Pinout & Package
SOT23-8 package (DDF), 2.9 mm × 2.8 mm footprint, thermally enhanced for automotive under-hood operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN− (Pin 1) | Negative input | Connects to load side of shunt in high-side config or ground side in low-side config; bias current ≤35 µA ensures minimal shunt error. |
| GND (Pin 2) | Ground reference | Primary return path for internal circuitry; must be connected to clean analog ground separate from power ground. |
| REF2 (Pin 3) | Reference input | Adjusts output offset; connect to 0 V–VS to set bidirectional zero point (e.g., 2.5 V for ±2.5 V output swing). |
| NC (Pin 4) | No-connect | Internally reserved; TI specifies connection to GND for mechanical stability and EMI reduction. |
| OUT (Pin 5) | Analog output | Delivers amplified, referenced voltage (10×Vsense + Vref); drives ADC inputs directly with rail-to-rail swing (GND+8 mV to VS−70 mV). |
| VS (Pin 6) | Power supply | Accepts 2.7 V–20 V; PSRR >130 dB minimizes supply noise coupling into sensed signal. |
| REF1 (Pin 7) | Reference input | Paired with REF2 to define output center point; differential reference configuration enables precise bidirectional nulling. |
| IN+ (Pin 8) | Positive input | Connects to bus-voltage side of shunt in high-side config or load side in low-side config; withstands 120 V survival rating. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation - meets automotive powertrain reliability requirements without derating. |
| Enhanced PWM rejection | 1 µs hold time + high AC-CMRR suppresses output disturbance from 125 kHz switching edges - eliminates need for external RC filtering in EPS inverters. |
| Bidirectional sensing capability | Dual reference inputs (REF1/REF2) enable true zero-centered output for regenerative braking current direction detection without external op-amps. |
| Ultra-low offset drift | ±0.1 µV/°C - maintains ≤0.12% total offset error over full temperature range, critical for torque accuracy in electric power steering. |
| High-speed step response | 1 µs to 1% settling - enables real-time overcurrent protection in motor phase legs with minimal latency. |
Applications
| eTurbo / Electric Turbocharger | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Monitoring bidirectional motor current during boost and coast-down phases in 48 V eTurbo actuators. IC Role / Device Role / Timing Role: High-side current sense amplifier placed between 48 V bus and BLDC motor phase leg; samples at ≥100 kHz to capture transient torque demand. Use Value: ±10 µV offset enables sub-0.5 A resolution at 1 mΩ shunt; 1.1 MHz bandwidth detects winding faults before thermal damage occurs. |
Use Scenario: Real-time phase current feedback in 3-phase EPS motor controllers for assist torque calculation and fault detection. IC Role / Device Role / Timing Role: Inline shunt monitor on each motor phase; interfaces directly to 12-bit ADC with 10 V/V gain scaling full-scale to 3.3 V. Use Value: 166 dB DC-CMRR rejects battery ripple and inverter noise; enhanced PWM rejection prevents false overcurrent trips during PWM commutation. |
| Starter/Generator System | Regenerative Braking Control |
Use Scenario: Bidirectional current measurement in 48 V P0/P2 hybrid starter-generator units during cranking and energy recovery modes. IC Role / Device Role / Timing Role: Low-side shunt amplifier with REF1/REF2 configured for ±2.5 V output swing; synchronized to MCU PWM timer for precise current sampling windows. Use Value: −5 V to 110 V common-mode range accommodates negative crankback voltage spikes; 1 µs settling ensures accurate peak current capture at 20 kHz switching. |
Use Scenario: Monitoring battery charge current during regenerative braking in EV traction inverters with 400 V–800 V DC link. IC Role / Device Role / Timing Role: High-side current sense on DC-link shunt; outputs to isolated sigma-delta ADC via reinforced insulation barrier. Use Value: 120 V survival rating handles transient overvoltage during IGBT turn-off; 104 dB AC-CMRR at 100 kHz suppresses switching noise coupling into battery management algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | Lower precision: ±0.1% gain error, ±150 µV offset; no enhanced PWM rejection circuitry. | Not suitable for 125 kHz PWM systems; requires external filtering in EPS or eTurbo designs. | Select when cost sensitivity outweighs need for ultra-precision or high-frequency transient immunity. |
| MAX40056ATA+T | Wider supply (2.7 V–60 V), but lower CMRR (130 dB DC), no AEC-Q100 Grade 1 rating. | Lacks automotive qualification; limited to industrial motor drives where ambient temp ≤105°C. | Choose only for non-automotive 48 V systems requiring extended supply range and acceptable 130 dB CMRR. |
Compared with INA240A1QDRQ1 and MAX40056ATA+T, the INA241A1QDRQ1 uniquely combines AEC-Q100 Grade 1 qualification, 166 dB DC-CMRR, and validated 125 kHz PWM rejection - making it the only option qualified for safety-critical, high-bandwidth automotive current sensing where measurement integrity directly impacts torque control and fault response.
Availability
INA241A1QDRQ1 is available at Aetrix Electronics and suitable for electric power steering (EPS), eTurbo actuation, and regenerative braking systems requiring stable component supply across automotive production lifecycles.
Supply support for INA241A1QDRQ1 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-grade IC development expertise.
The INA241x-Q1 product line was engineered specifically for high-reliability, high-accuracy current sensing in AEC-Q100-compliant automotive powertrain and chassis systems - emphasizing precision, transient immunity, and temperature stability.
FAQ
What is the maximum common-mode voltage the INA241A1QDRQ1 can withstand during operation?
The INA241A1QDRQ1 has an operational common-mode input range of −5 V to 110 V and a survival rating of −20 V to 120 V. This allows direct high-side sensing on 48 V and 96 V automotive buses, including transient overvoltage conditions such as load dump or inductive kickback, without external protection circuitry - a key requirement for eTurbo and starter/generator applications where bus voltage exceeds standard supply rails.
How does the enhanced PWM rejection feature of the INA241A1QDRQ1 improve system performance in motor control?
The INA241A1QDRQ1's enhanced PWM rejection holds its output stable for 1 µs during fast common-mode transients and leverages 104 dB AC-CMRR at 100 kHz to attenuate residual noise - eliminating output ringing and false overcurrent triggers in EPS and eTurbo inverters operating up to 125 kHz. This removes the need for external RC filters or digital post-processing, reducing BOM cost and improving real-time fault response latency.
Can the INA241A1QDRQ1 be used for bidirectional current measurement without external components?
Yes. The INA241A1QDRQ1 supports true bidirectional sensing using its dual reference inputs (REF1 and REF2). By setting REF1 = VS and REF2 = GND (or vice versa), the output centers at VS/2, enabling ± full-scale measurement of current flow direction - essential for regenerative braking and starter/generator energy recovery - with no external op-amps, level shifters, or resistive dividers required.
What is the typical quiescent current consumption of the INA241A1QDRQ1, and how does it vary with supply voltage?
The INA241A1QDRQ1 draws 2.5 mA typical quiescent current at 25°C, rising to 3.2 mA maximum across −40°C to +125°C. Supply voltage variation (2.7 V–20 V) causes negligible change - current remains within ±0.1 mA across the full range - ensuring consistent low-power operation in 3.3 V microcontroller domains or 12 V body-control modules without thermal or efficiency penalties.
Which package options are available for the INA241A1QDRQ1, and what is the standard package for this specific part number?
The INA241A1QDRQ1 is orderable exclusively in the SOT23-8 (DDF) package, measuring 2.9 mm × 2.8 mm. While the broader INA241x-Q1 family offers VSSOP-8, SOIC-8, and VSSOP-10 variants, TI's official datasheet and distributor listings confirm QDRQ1 suffix denotes the DDF variant - optimized for space-constrained automotive ECUs and high-density motor control PCBs.
INA241A1QDRQ1 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:
- Single-Ended
- Slew Rate:
- 8V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.1 MHz
- Current - Input Bias:
- 35 µA
- Voltage - Input Offset:
- 5 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
INA241A1QDRQ1 FAQ
1.How can I place an order for INA241A1QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA241A1QDRQ1 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 INA241A1QDRQ1 reliable?
The price and inventory of INA241A1QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA241A1QDRQ1 is usually 5 days.
3.What payment methods are accepted for INA241A1QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA241A1QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA241A1QDRQ1?
INA241A1QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA241A1QDRQ1 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 INA241A1QDRQ1?
For technical support, including INA241A1QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA241A1QDRQ1 requirements.
6.How does Aetrix verify that INA241A1QDRQ1 is sourced from the original manufacturer or authorized distributors?
All INA241A1QDRQ1 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 INA241A1QDRQ1 meets industry standards.
7.What is the process for return or replacement of INA241A1QDRQ1?
All INA241A1QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA241A1QDRQ1, 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 INA241A1QDRQ1 part is unused and in its original packaging.
Return procedure for INA241A1QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA241A1QDRQ1 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…
