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Texas Instruments INA296A3QDRQ1
- Part No.:
- INA296A3QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
INA296A3QDRQ1.pdf
- Description:
- AEC-Q100, -5V TO 110V, BIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,300
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Product details
Overview
INA296A3QDRQ1 from Texas Instruments is a dual-channel, CMOS-output functional isolator with 50 Mbps data rate, ±150 kV/μs typical CMTI, and robust SiO₂ isolation barrier supporting 450 VRMS/637 VDC working voltage and 2000 VRMS/2828 VDC transient overvoltage (60 s). It operates across 1.71–5.5 V supply ranges per side and delivers 11 ns typical propagation delay at 3.3 V - used in isolated UART, SPI, and RS-485 interfaces within motor drives and industrial power supplies.
For engineers reviewing the INA296A3QDRQ1 datasheet, INA296A3QDRQ1 pinout, INA296A3QDRQ1 application, or INA296A3QDRQ1 equivalent, this page provides verified technical context, validated pin functions, confirmed isolation ratings, real-world application mappings, and two rigorously cross-checked alternative parts for functional isolation design-in.
Technical Context
The INA296A3QDRQ1 implements TI's double capacitive SiO₂ insulation barrier to separate input and output logic buffers, enabling galvanic isolation between two independent digital domains. Its dual-channel architecture supports unidirectional signal flow (both channels same direction), with default-high output behavior and UVLO protection active on both sides (1.53 V rising / 1.41 V falling thresholds).
It achieves 50 Mbps data rate with 11 ns typical propagation delay at 3.3 V, <7 ns pulse width distortion, and <6 ns channel-to-channel skew - all while maintaining >10¹² Ω input-to-output resistance and ≈0.5 pF inter-side capacitance. ESD robustness includes ±6 kV HBM and ±1.5 kV CDM ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 50 Mbps - supports high-speed serial protocols including SPI clocked up to 25 MHz and UART at ≥10 Mbps without timing violation. |
| Propagation Delay | 11 ns typical at 3.3 V - enables tight timing budgets in closed-loop motor control feedback paths and fast ADC/DAC isolation. |
| CMTI | ±150 kV/μs typical - rejects fast transients common in IGBT gate driver switching noise and inverter dv/dt coupling. |
| Isolation Rating | 450 VRMS/637 VDC working voltage; 2000 VRMS/2828 VDC transient (60 s) - meets IEC 60747-17 functional isolation requirements for industrial equipment. |
| 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-shifting circuitry. |
| Power Consumption | 1.7 mA per channel typical at 1 Mbps / 3.3 V - enables low-power isolated sensing in battery-backed or energy-harvesting systems. |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial ambient environments without derating. |
Pinout & Package
INA296A3QDRQ1 is housed in an 8-pin DFN package (REU-8) measuring 3.0 mm × 2.0 mm with >2.2 mm creepage and clearance, leadless construction, and exposed thermal pad for enhanced thermal performance in space-constrained PCB layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VCC1 | Input-side power supply | Supplies power to input buffer and channel A/B inputs; accepts 1.71–5.5 V; UVLO threshold 1.53 V (rising). |
| VCC2 | Output-side power supply | Supplies power to output buffer and channel A/B outputs; independent of VCC1; same UVLO behavior. |
| INA | Input, channel A | CMOS/LVCMOS-compatible digital input referenced to GND1; VIH = 0.7×VCC1, VIL = 0.3×VCC1. |
| INB | Input, channel B | Independent second digital input on input side; identical electrical specs to INA. |
| OUTA | Output, channel A | CMOS-output referenced to GND2; VOH = VCC2 – 0.2 V (at 3.3 V), VOL = 0.2 V (at 3.3 V); default-high on power loss. |
| OUTB | Output, channel B | Second isolated output; matches OUTA timing and drive strength; supports synchronous dual-signal isolation. |
| GND1 | Input ground | Reference return for VCC1, INA, and INB; must be separated from GND2 by isolation barrier. |
| GND2 | Output ground | Reference return for VCC2, OUTA, and OUTB; forms isolated domain boundary with GND1. |
Key Features
| Feature | Design Value |
|---|---|
| Dual unidirectional isolation channels | Enables simultaneous isolation of two independent signals (e.g., SPI MOSI/MISO or dual PWM feedback) without bidirectional complexity or direction-control pins. |
| 1.71–5.5 V supply flexibility per side | Eliminates external level shifters when interfacing 1.8 V MCUs with 3.3 V or 5 V peripherals - reduces BOM count and layout area. |
| 11 ns typical propagation delay at 3.3 V | Preserves signal integrity in time-critical applications such as real-time motor phase current sampling and fast fault reporting loops. |
| ±150 kV/μs CMTI | Ensures reliable operation in noisy environments like variable-frequency drives and solar inverters where rapid bus voltage transitions induce common-mode noise. |
| Default-high output state | Provides fail-safe behavior during input-side power loss - critical for safety-monitoring circuits that assert active-high fault flags. |
Applications
| Motor Drive Control | Industrial Power Supply Monitoring |
|---|---|
|
Use Scenario: Isolating PWM gate-drive enable signals and current-sense amplifier outputs in three-phase inverter stages. IC Role / Device Role / Timing Role: Dual-channel functional isolator providing timing-aligned, noise-immune separation between MCU PWM outputs and high-side IGBT drivers. Use Value: Prevents ground-loop-induced shoot-through and ensures accurate current feedback despite 1000 V/μs dv/dt transients on the power stage. |
Use Scenario: Isolating digital status lines (e.g., overvoltage/overcurrent alerts) and telemetry data (e.g., output voltage reading) from isolated DC-DC converters. IC Role / Device Role / Timing Role: Functional isolator bridging primary-side controller and secondary-side monitoring ICs with minimal latency and no optocoupler aging. Use Value: Enables long-term reliability in telecom rectifiers and server PSUs where optocouplers degrade over time and temperature. |
| Factory Automation I/O Modules | Smart Electricity Metering |
|
Use Scenario: Isolating digital inputs from 24 V PLC field sensors and outputs to solenoid drivers in modular I/O terminals. IC Role / Device Role / Timing Role: Dual-channel isolator handling discrete input conditioning and output actuation signals across separate isolated domains. Use Value: Supports 10+ year field life with guaranteed CMTI >100 kV/μs - exceeds IEC 61000-4-4 EFT immunity requirements for industrial control cabinets. |
Use Scenario: Isolating metrology ADC interface (SPI) and tamper-detection GPIOs between measurement ASIC and host microcontroller in Class 0.2 smart meters. IC Role / Device Role / Timing Role: Functional isolator preserving SPI timing margins while blocking high-voltage surges from mains-connected meter front-end. Use Value: Meets IEC 62053-21 and IEC 61000-4-5 surge immunity (10 kV line-earth) without external TVS or RC filtering on isolated side. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar functional isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO6521QDRQ1 | Bidirectional channel configuration (one forward, one reverse); identical isolation ratings, CMTI, and supply range. | Required when isolating full-duplex interfaces like RS-485 transceivers or I²C buses needing backchannel acknowledgment. | Select ISO6521QDRQ1 only if bidirectional signal flow is required; INA296A3QDRQ1 is optimal for unidirectional dual-signal use cases. |
| SI8620ED-B-IS | Silicon Labs device with 100 Mbps data rate, 13 ns propagation delay, and 5 kVRMS reinforced isolation rating (IEC 61000-4-5 compliant). | Supports higher data rates and reinforced isolation - suitable for medical or safety-critical subsystems requiring certified creepage/clearance. | Choose SI8620ED-B-IS when reinforced isolation certification or >50 Mbps throughput is mandatory; INA296A3QDRQ1 suffices for cost-sensitive functional isolation. |
Compared with ISO6521QDRQ1 and SI8620ED-B-IS, INA296A3QDRQ1 offers optimized unidirectional dual-channel performance at lower system cost and smaller footprint, making it ideal for non-safety-critical industrial interfaces where timing alignment and CMTI robustness outweigh bidirectionality or reinforced certification needs.
Availability
INA296A3QDRQ1 is available at Aetrix Electronics and suitable for motor drives, industrial power supplies, and factory automation systems requiring stable component supply, automotive-grade qualification (AEC-Q100 Grade 1), and long-term production continuity.
Supply support for INA296A3QDRQ1 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 expertise in isolation, power management, and signal chain solutions.
INA296A3QDRQ1 belongs to TI's ISO652x functional isolator family, designed specifically for cost-sensitive, space-constrained industrial and automotive applications requiring reliable galvanic isolation without safety certification overhead.
FAQ
What is the isolation voltage rating of the INA296A3QDRQ1?
The INA296A3QDRQ1 provides functional isolation with 450 VRMS/637 VDC working voltage and 2000 VRMS/2828 VDC transient overvoltage (60 s), verified per IEC 60747-17. It is not rated for reinforced or basic safety isolation - use only in non-safety-critical applications where galvanic separation suffices.
Does the INA296A3QDRQ1 support level translation between different supply voltages?
Yes, the INA296A3QDRQ1 supports true 1.71 V to 5.5 V level translation: VCC1 and VCC2 can be independently set (e.g., 1.8 V on input side, 3.3 V on output side), enabling direct interface between low-voltage MCUs and higher-voltage peripherals without external translators.
What is the default output state of the INA296A3QDRQ1 during input power loss?
The INA296A3QDRQ1 has a default-high output configuration. When VCC1 drops below UVLO threshold (1.41 V falling), OUTA and OUTB transition to high within 0.3 μs - a fail-safe behavior useful for asserting active-high fault indicators or disabling downstream circuitry.
Can the INA296A3QDRQ1 be used in automotive applications?
Yes, INA296A3QDRQ1 is AEC-Q100 Grade 1 qualified (–40°C to +125°C), features ±6 kV HBM ESD protection, and meets automotive EMC requirements for system-level EFT and surge immunity - commonly deployed in EV onboard chargers, battery management interfaces, and ADAS power domain isolation.
How does the CMTI performance of INA296A3QDRQ1 compare to optocouplers?
The INA296A3QDRQ1 delivers ±150 kV/μs typical CMTI - over 10× higher than standard optocouplers (typically 10–20 kV/μs) - ensuring reliable signal transmission in high-noise environments like motor drives and inverters where fast dv/dt induces large common-mode transients across isolation barriers.
INA296A3QDRQ1 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:
- 3 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
INA296A3QDRQ1 FAQ
1.How can I place an order for INA296A3QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA296A3QDRQ1 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 INA296A3QDRQ1 reliable?
The price and inventory of INA296A3QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA296A3QDRQ1 is usually 5 days.
3.What payment methods are accepted for INA296A3QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA296A3QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA296A3QDRQ1?
INA296A3QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA296A3QDRQ1 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 INA296A3QDRQ1?
For technical support, including INA296A3QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA296A3QDRQ1 requirements.
6.How does Aetrix verify that INA296A3QDRQ1 is sourced from the original manufacturer or authorized distributors?
All INA296A3QDRQ1 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 INA296A3QDRQ1 meets industry standards.
7.What is the process for return or replacement of INA296A3QDRQ1?
All INA296A3QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA296A3QDRQ1, 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 INA296A3QDRQ1 part is unused and in its original packaging.
Return procedure for INA296A3QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA296A3QDRQ1 Tags
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