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Texas Instruments INA296B2QDRQ1
- Part No.:
- INA296B2QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
INA296B2QDRQ1.pdf
- Description:
- AEC-Q100, -5V TO 110V, BIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,496
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Product details
Overview
INA296B2QDRQ1 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 rated for 450 VRMS / 637 VDC working voltage and 2000 VRMS / 2828 VDC transient overvoltage (60 s). It supports independent 1.71–1.89 V and 2.25–5.5 V supply rails per side and operates across –40°C to 125°C - deployed in motor drive gate driver feedback loops and isolated power supply monitoring circuits.
For engineers reviewing the INA296B2QDRQ1 datasheet, INA296B2QDRQ1 pinout, INA296B2QDRQ1 application, or INA296B2QDRQ1 equivalent, key selection criteria include channel directionality (dual unidirectional), default-high output behavior, 11 ns typical propagation delay at 3.3 V, 1.71–5.5 V level translation capability, and DFN (8-REU) package with >2.2 mm creepage.
Technical Context
The INA296B2QDRQ1 implements two independent capacitive SiO₂ isolation channels with identical input-to-output directionality (A→B, B→B), enabling synchronous signal isolation for bidirectional bus interfaces like SPI or isolated ADC readback. Its double-capacitor barrier architecture provides functional (non-safety) isolation compliant with IEC 60664-1 Material Group II and CTI >400 V.
It features undervoltage lockout (UVLO) with 1.53 V rising threshold and 0.13 V hysteresis, supports 1.71–5.5 V level translation between sides, and delivers low skew (<6 ns channel-to-channel) and tight pulse width distortion (<7 ns) - critical for timing-critical feedback paths in high-efficiency power converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 50 Mbps - supports high-speed digital communication in isolated gate drivers and fast-loop current sensing systems. |
| Propagation Delay | 11 ns typical at 3.3 V - enables sub-20 ns round-trip latency for real-time protection in motor control inverters. |
| CMTI | ±150 kV/μs typical - rejects high dv/dt noise from SiC/GaN switching nodes without signal corruption. |
| Working Voltage | 450 VRMS / 637 VDC - meets reinforced insulation requirements for 400 VAC industrial power supplies and EV on-board chargers. |
| 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 analog front-ends without level shifters. |
| Default Output | High - ensures fail-safe logic state during input-side power loss in isolated current monitor enable paths. |
| Package | DFN (8-REU), 3.0 mm × 2.0 mm - provides compact footprint and >2.2 mm creepage for space-constrained PCB layouts in power modules. |
Pinout & Package
INA296B2QDRQ1 is housed in an 8-pin leadless DFN package (8-REU) with wettable flanks, 3.0 mm × 2.0 mm body size, and >2.2 mm creepage/clearance. The isolation barrier separates input-side (VCC1, GND1, INA, INB) and output-side (VCC2, GND2, 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 buffers; UVLO active below 1.53 V. |
| GND1 | Input-side ground reference | Return path for input logic and internal biasing; galvanically isolated from GND2. |
| INA | Channel A input | CMOS/LVCMOS-compatible digital input; 0.7×VCCI high threshold ensures noise margin in noisy environments. |
| INB | Channel B input | Independent second input; identical electrical specs to INA - used for dual-signal isolation (e.g., PWM + fault). |
| VCC2 | Output-side power supply | Supplies 1.71–1.89 V or 2.25–5.5 V to output drivers; enables level translation to downstream logic. |
| GND2 | Output-side ground reference | Return path for output signals; maintains isolation integrity; must not be connected to GND1. |
| OUTA | Channel A output | CMOS-output with 1 mA drive strength at 1.8 V; default-high state ensures safe shutdown when VCC1 fails. |
| OUTB | Channel B output | Independent output mirroring INA behavior; supports simultaneous isolation of two control signals. |
Key Features
| Feature | Design Value |
|---|---|
| Dual unidirectional channels | Both channels transmit input-to-output only (ISO6520 topology), ideal for isolated PWM and enable signaling in half-bridge drivers. |
| 11 ns propagation delay @ 3.3 V | Enables <22 ns total loop delay in closed-loop current sensing, supporting >1 MHz switching frequencies in GaN-based PFC stages. |
| ±150 kV/μs CMTI | Rejects common-mode transients induced by 100 V/ns SiC gate drivers, preventing false triggering in isolated feedback paths. |
| 1.71–5.5 V level translation | Eliminates external level shifters when interfacing 1.8 V FPGAs with 3.3 V isolated ADCs or 5 V gate drivers. |
| Default-high output logic | Guarantees active-high safety state during brownout or MCU reset - critical for enabling isolated overcurrent protection latches. |
Applications
| Motor Drive Feedback | Isolated Power Supply Monitoring |
|---|---|
Use Scenario: Isolating PWM gate signals and fault status from a microcontroller to a high-voltage half-bridge inverter stage. IC Role / Device Role / Timing Role: Dual-channel functional isolator providing timing-aligned, low-skew transmission of complementary PWM and DESAT fault signals across 400 VDC bus. Use Value: 11 ns propagation delay and <6 ns channel skew preserve dead-time integrity; ±150 kV/μs CMTI prevents false DESAT trips during 100 V/ns SiC switching. | Use Scenario: Monitoring isolated output voltage and current sense signals in a 3.3 kW telecom rectifier with 48 VDC output. IC Role / Device Role / Timing Role: Transmitting ADC conversion ready and overvoltage alarm signals from secondary-side controller to primary-side PMU via reinforced isolation barrier. Use Value: 450 VRMS working voltage meets IEC 62368-1 reinforced insulation; 1.71–5.5 V supply flexibility enables direct interface with both 1.8 V ADCs and 5 V PMUs. |
| Factory Automation I/O | EV On-Board Charger Control |
Use Scenario: Isolating digital I/O between PLC CPU (24 V logic) and field devices (0–10 V analog sensors, relay outputs). IC Role / Device Role / Timing Role: Level-translating and isolating discrete ON/OFF commands and status feedback across 2500 VRMS transient barrier in modular I/O modules. Use Value: Dual-channel integration reduces component count vs discrete optocouplers; DFN package saves >40% board area in dense DIN-rail mount controllers. | Use Scenario: Isolating CAN bus communication and battery management system (BMS) fault signals in 6.6 kW OBC with 400 VDC input. IC Role / Device Role / Timing Role: Providing functional isolation for CAN TX/RX lines and thermal shutdown alerts between high-voltage DC stage and low-voltage MCU domain. Use Value: 2000 VRMS transient rating withstands surge events per ISO 16750-2; default-high output ensures BMS fault latch remains asserted during HV bus collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel functional isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO6520DRQ1 | Same dual-unidirectional topology and DFN (8-REU) package; identical 50 Mbps, 11 ns delay, and 450 VRMS rating. | No automotive qualification (AEC-Q100 Grade 1); lacks Q1 suffix indicating automotive-grade screening and extended temperature validation. | Select INA296B2QDRQ1 for automotive OBC, traction inverter control, or any AEC-Q100-compliant design requiring guaranteed –40°C to 125°C operation and PPAP support. |
| SI8620ED-B-IS | Si8620 offers 150 Mbps data rate and 10 ns propagation delay but uses SOIC-8 package with 4 mm creepage; no 1.8 V supply support. | Higher ESD immunity (±8 kV HBM) but lacks automotive qualification and 1.71–1.89 V operation required for ultra-low-power MCU domains. | Choose SI8620ED-B-IS only if >50 Mbps bandwidth is mandatory and SOIC-8 layout compatibility exists; otherwise INA296B2QDRQ1 provides superior automotive compliance and low-voltage interoperability. |
Compared with ISO6520DRQ1, INA296B2QDRQ1 adds AEC-Q100 Grade 1 qualification and production traceability for automotive use; versus SI8620ED-B-IS, it trades raw speed for guaranteed 1.8 V operation, smaller DFN footprint, and automotive-grade reliability - making it optimal for cost-sensitive, space-constrained EV power electronics.
Availability
INA296B2QDRQ1 is available at Aetrix Electronics and suitable for motor drives, isolated power supplies, factory automation I/O modules, and EV on-board chargers requiring stable component supply, automotive-grade qualification, and long-term lifecycle assurance.
Supply support for INA296B2QDRQ1 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 ICs for industrial, automotive, and power applications.
INA296B2QDRQ1 belongs to TI's ISO652x functional isolator family, engineered for cost-sensitive, space-constrained non-safety isolation in high-noise power conversion and motor control systems.
FAQ
What is the isolation rating of the INA296B2QDRQ1?
The INA296B2QDRQ1 provides functional isolation with 450 VRMS / 637 VDC working voltage and 2000 VRMS / 2828 VDC transient overvoltage rating (60 s), validated per IEC 60664-1 for Material Group II. It uses a double capacitive SiO₂ barrier and is certified for automotive use under AEC-Q100 Grade 1, ensuring reliability across –40°C to 125°C ambient.
Does the INA296B2QDRQ1 support 1.8 V logic levels on both sides?
Yes, the INA296B2QDRQ1 supports 1.71–1.89 V supply on both VCC1 and VCC2 rails, enabling direct interface with 1.8 V microcontrollers and peripherals. Its input thresholds scale to 0.7×VCCI and 0.3×VCCI, and output drive capability is specified down to 1 mA at 1.8 V - confirmed in Sections 5.12 and 5.13 of the datasheet.
What is the default output state of the INA296B2QDRQ1 during input power loss?
The INA296B2QDRQ1 has a default-high output configuration. When VCC1 drops below UVLO threshold (~1.53 V), OUTA and OUTB transition to and hold high state within 0.3 μs (tDO), ensuring fail-safe behavior in isolated enable or fault-latch circuits - a key requirement for automotive and industrial safety monitoring.
Can the INA296B2QDRQ1 replace optocouplers in high-speed applications?
Yes, the INA296B2QDRQ1 replaces legacy optocouplers in high-speed applications with its 50 Mbps data rate, 11 ns propagation delay, and negligible aging or CTR degradation. Unlike optocouplers, it delivers consistent timing across temperature and lifetime, supports bidirectional logic-level translation, and fits in half the PCB area of SOIC-8 optos - verified in TI's ISO652x application notes for motor control and PSU designs.
Is the INA296B2QDRQ1 pin-compatible with other ISO652x variants?
The INA296B2QDRQ1 shares the same 8-REU pinout and function mapping as ISO6520DRQ1 and ISO6520FDRQ1, including VCC1, GND1, INA, INB, VCC2, GND2, OUTA, OUTB. However, it is not pin-compatible with ISO6521-series (bidirectional channel orientation) or SOIC-8 packaged variants due to differing pin assignments and package dimensions.
INA296B2QDRQ1 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:
- 25 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
INA296B2QDRQ1 FAQ
1.How can I place an order for INA296B2QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA296B2QDRQ1 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 INA296B2QDRQ1 reliable?
The price and inventory of INA296B2QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA296B2QDRQ1 is usually 5 days.
3.What payment methods are accepted for INA296B2QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA296B2QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA296B2QDRQ1?
INA296B2QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA296B2QDRQ1 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 INA296B2QDRQ1?
For technical support, including INA296B2QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA296B2QDRQ1 requirements.
6.How does Aetrix verify that INA296B2QDRQ1 is sourced from the original manufacturer or authorized distributors?
All INA296B2QDRQ1 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 INA296B2QDRQ1 meets industry standards.
7.What is the process for return or replacement of INA296B2QDRQ1?
All INA296B2QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA296B2QDRQ1, 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 INA296B2QDRQ1 part is unused and in its original packaging.
Return procedure for INA296B2QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA296B2QDRQ1 Tags
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