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Texas Instruments INA296A1QDRQ1
- Part No.:
- INA296A1QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
INA296A1QDRQ1.pdf
- Description:
- AEC-Q100, -5V TO 110V, BIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
INA296A1QDRQ1 from Texas Instruments is a dual-channel, CMOS-output functional isolator with 50 Mbps data rate, ±150 kV/μs typical CMTI, and dual SiO₂ capacitive isolation barrier. It supports independent 1.71–1.89 V and 2.25–5.5 V supply rails per side, operates from –40°C to 125°C, and delivers 11 ns typical propagation delay at 3.3 V - used in isolated UART, SPI, and RS-485 interfaces for motor drives and industrial power supplies.
For engineers reviewing the INA296A1QDRQ1 datasheet, INA296A1QDRQ1 pinout, INA296A1QDRQ1 application, or INA296A1QDRQ1 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with documented differences, and supply-chain support details specific to automotive-grade (AEC-Q100 qualified) functional isolation requirements.
Technical Context
The INA296A1QDRQ1 implements two unidirectional isolation channels using TI's double capacitive SiO₂ barrier, enabling galvanic separation between input and output domains while supporting level translation across 1.71–5.5 V logic families. Its default-high output behavior (no "F" suffix) ensures fail-safe state during input-side power loss.
It achieves robust EMC performance via ultra-low emissions and system-level ESD/EFT/surge immunity, with functional isolation rated for 450 VRMS / 637 VDC working voltage and 2000 VRMS / 2828 VDC transient overvoltage (60 s), validated for 8-REU DFN package with >2.2 mm creepage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 50 Mbps - supports high-speed digital interfaces like SPI clock lines and fast UART without signal degradation. |
| Propagation Delay | 11 ns typical at 3.3 V - enables tight timing budgets in real-time control loops and synchronized sampling systems. |
| CMTI | ±150 kV/μs typical - rejects fast transients common in motor drive inverters and switch-mode power supplies. |
| Supply Range | 1.71–1.89 V and 2.25–5.5 V per side - allows direct interfacing with 1.8 V microcontrollers and 3.3/5 V peripherals without level shifters. |
| Isolation Rating | 450 VRMS working voltage, 2000 VRMS transient (60 s) - meets IEC 60664-1 reinforced insulation requirements for industrial equipment. |
| Operating Temp | –40°C to 125°C - qualified per AEC-Q100 Grade 1 for under-hood automotive and harsh-environment industrial use. |
| Package | 8-pin DFN (8-REU), 3.0 mm × 2.0 mm - compact footprint ideal for space-constrained gate driver and sensor interface PCBs. |
Pinout & Package
INA296A1QDRQ1 uses an 8-pin leadless DFN (8-REU) package with 0.4 mm pitch, 3.0 mm × 2.0 mm body, and >2.2 mm creepage distance. The isolation barrier separates input-side (VCC1, GND1, INA, INB) and output-side (VCC2, GNDO, OUTA, OUTB) terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC1 | Input-side power supply | Supplies 1.71–1.89 V or 2.25–5.5 V to input logic and channel A/B input buffers; UVLO threshold 1.53–1.71 V. |
| GND1 | Input-side ground reference | Return path for VCC1 and input signals; must be isolated from GND2 by ≥2.2 mm creepage on PCB. |
| INA | Channel A input | CMOS/LVCMOS-compatible digital input; VIH = 0.7×VCCI, VIL = 0.3×VCCI - accepts standard logic levels from MCU GPIO. |
| INB | Channel B input | Independent second input; identical electrical characteristics to INA - enables dual-signal isolation (e.g., SPI MOSI/MISO). |
| VCC2 | Output-side power supply | Independent rail for output drivers; supports different voltage than VCC1 - enables 1.8 V → 3.3 V level translation. |
| GNDO | Output-side ground reference | Return path for VCC2 and outputs; electrically isolated from GND1 - prevents ground-loop noise coupling. |
| OUTA | Channel A output | CMOS output with VOH = VCCO – 0.2 V (at 3.3 V), VOL = 0.2 V - drives downstream logic or gate drivers directly. |
| OUTB | Channel B output | Matched timing to OUTA (6 ns max skew); default-high state maintained during VCC1 loss - ensures safe shutdown behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Dual unidirectional isolation channels | Enables simultaneous isolation of two independent digital signals (e.g., UART TX/RX or SPI SCLK/MOSI) with matched propagation delay. |
| 1.71–5.5 V level translation | Eliminates external level shifters when interfacing low-voltage MCUs (1.8 V) with higher-voltage peripherals (3.3/5 V). |
| 11 ns typical propagation delay | Supports 50 Mbps data rates with minimal latency - critical for closed-loop motor control and real-time sensor feedback. |
| ±150 kV/μs CMTI | Rejects fast common-mode noise from IGBT/SiC switching in motor drives and inverters without signal corruption. |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications requiring operation up to 125°C ambient - suitable for battery management and ADAS subsystems. |
Applications
| Motor Drive Control | Industrial Power Supply Monitoring |
|---|---|
Use Scenario: Isolating PWM signals and fault feedback between MCU and gate driver IC in 3-phase inverter. IC Role / Device Role / Timing Role: Dual-channel functional isolator transmitting gate enable and overcurrent fault signals across isolation barrier. Use Value: 11 ns propagation delay ensures precise timing alignment between control and protection signals; ±150 kV/μs CMTI prevents false triggering during IGBT switching. |
Use Scenario: Isolating ADC data lines and control signals in digitally regulated AC/DC and DC/DC converters. IC Role / Device Role / Timing Role: Transmitting voltage/current measurement data and enable commands between isolated primary and secondary sides. Use Value: 50 Mbps capability supports high-resolution, high-sample-rate telemetry; dual-channel design reduces component count vs discrete isolators. |
| Automotive Battery Management | Factory Automation I/O Modules |
Use Scenario: Isolating cell voltage monitoring and balancing control signals in high-voltage EV battery packs. IC Role / Device Role / Timing Role: Functional isolator linking microcontroller to analog front-end and balancing FET drivers across 400–800 V potential difference. Use Value: AEC-Q100 Grade 1 rating guarantees reliability at 125°C; 2000 VRMS transient rating withstands load-dump surges in vehicle electrical systems. |
Use Scenario: Isolating digital inputs/outputs in PLC modules handling 24 V industrial sensors and actuators. IC Role / Device Role / Timing Role: Providing galvanic separation between field-side 24 V logic and controller-side 3.3 V MCU bus. Use Value: Independent VCC1/VCC2 rails allow native 24 V input sensing and 3.3 V MCU interfacing; >2.2 mm creepage meets IEC 61000-4-5 surge requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel functional isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO6521QDRQ1 | Bidirectional channel configuration (one forward, one reverse) vs INA296A1QDRQ1's dual-forward topology. | Suitable for full-duplex protocols like I²C where direction reversal is required; not drop-in for unidirectional SPI/UART. | Select ISO6521QDRQ1 only when bidirectional signal flow is needed; pinout differs - requires PCB redesign. |
| SI8620ED-B-IS | Silicon Labs device with 150 Mbps data rate, 10 kV RMS isolation, but no AEC-Q100 qualification or 1.8 V supply support. | Used in non-automotive industrial systems requiring higher speed or higher isolation voltage; lacks automotive temperature range. | Choose SI8620ED-B-IS for cost-sensitive non-automotive designs needing >50 Mbps; INA296A1QDRQ1 remains preferred for AEC-Q100 compliance. |
Compared with ISO6521QDRQ1 and SI8620ED-B-IS, INA296A1QDRQ1 uniquely combines AEC-Q100 Grade 1 qualification, 1.71–1.89 V supply compatibility, and dual-unidirectional channel architecture - making it optimal for automotive motor control and battery monitoring where fail-safe default-high behavior and compact DFN packaging are mandatory.
Availability
INA296A1QDRQ1 is available at Aetrix Electronics and suitable for motor drives, industrial power supplies, and automotive battery management systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant functional isolation.
Supply support for INA296A1QDRQ1 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, embedded processing, and high-reliability components for industrial, automotive, and communications markets.
INA296A1QDRQ1 belongs to TI's ISO652x functional isolator family, designed specifically for cost-sensitive, space-constrained applications requiring robust galvanic isolation without safety certification overhead - targeting motor control, power conversion, and factory automation.
FAQ
What is the default output state of INA296A1QDRQ1 during input power loss?
The INA296A1QDRQ1 has a default-high output configuration (no "F" suffix). When VCC1 drops below the UVLO threshold (1.53–1.71 V), both OUTA and OUTB transition to and hold a logic-high state within 0.1–0.3 μs. This fail-safe behavior ensures downstream gate drivers or control logic remain in a known safe state during input-side power interruption - a critical feature in motor drive and battery management systems where unintended activation must be avoided. The same behavior applies to INA296A1QDRQ1 regardless of VCC2 status.
Does INA296A1QDRQ1 support level translation between 1.8 V and 5 V logic domains?
Yes, INA296A1QDRQ1 supports true bidirectional level translation: VCC1 can operate from 1.71–1.89 V (for 1.8 V MCU I/O) while VCC2 runs from 2.25–5.5 V (for 3.3 V or 5 V peripheral logic). Input thresholds scale with VCCI (VIH = 0.7×VCCI, VIL = 0.3×VCCI), and output drive strength adapts to VCCO (VOH = VCCO – 0.2 V at 3.3 V, VOL = 0.2 V). This eliminates external level shifters in mixed-voltage systems such as automotive ECUs interfacing low-power sensors and high-drive actuators - a verified capability confirmed in TI's ISO652x Electrical Characteristics tables for 1.8 V and 5 V supply conditions.
What is the creepage and clearance distance of the INA296A1QDRQ1 8-REU package?
The INA296A1QDRQ1 in the 8-REU DFN package provides >2.2 mm external creepage and clearance distances between input and output pins, as specified in TI's ISO652x Package Characteristics table. This exceeds IPC-2221B requirements for reinforced insulation at 450 VRMS working voltage and enables compliance with IEC 61800-5-1 for adjustable speed drives. Designers must maintain this spacing on the PCB by avoiding copper pours or traces that bridge the isolation barrier - techniques like slots or ribs may be added to the board layout if required by end-equipment standards.
How does the CMTI performance of INA296A1QDRQ1 impact its use in motor drive inverters?
INA296A1QDRQ1's ±150 kV/μs typical common-mode transient immunity (CMTI) directly prevents data corruption during high dv/dt switching events in SiC or IGBT-based motor drive inverters. In practice, this means the isolator maintains accurate PWM signal transmission even when subjected to >10 kV/μs transients induced by fast-switching power stages - verified in TI's test setup with VCM = 700 V. This specification ensures reliable gate driver enable/disable signaling and fault feedback (e.g., DESAT detection) without added filtering or redundancy, reducing BOM cost and board area in Class 1000+ industrial drives.
Is INA296A1QDRQ1 pin-compatible with other devices in the ISO652x family?
No, INA296A1QDRQ1 is not pin-compatible with ISO6520 or ISO6521 variants due to differing channel directionality and pin assignments. While all ISO652x devices use the same 8-REU package footprint, the pin mapping for INA/INB/OUTA/OUTB differs between unidirectional (ISO6520/INA296A1QDRQ1) and bidirectional (ISO6521) configurations - as shown in Figures 4-3 and 4-4 of the datasheet. Substituting without PCB revision will result in incorrect signal routing. Always verify pin functions using Table 4-1 before replacement.
INA296A1QDRQ1 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
INA296A1QDRQ1 FAQ
1.How can I place an order for INA296A1QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA296A1QDRQ1 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 INA296A1QDRQ1 reliable?
The price and inventory of INA296A1QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA296A1QDRQ1 is usually 5 days.
3.What payment methods are accepted for INA296A1QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA296A1QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA296A1QDRQ1?
INA296A1QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA296A1QDRQ1 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 INA296A1QDRQ1?
For technical support, including INA296A1QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA296A1QDRQ1 requirements.
6.How does Aetrix verify that INA296A1QDRQ1 is sourced from the original manufacturer or authorized distributors?
All INA296A1QDRQ1 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 INA296A1QDRQ1 meets industry standards.
7.What is the process for return or replacement of INA296A1QDRQ1?
All INA296A1QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA296A1QDRQ1, 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 INA296A1QDRQ1 part is unused and in its original packaging.
Return procedure for INA296A1QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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