My Inquiry
My Account
Texas Instruments INA296A3QDGKRQ1
- Part No.:
- INA296A3QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA296A3QDGKRQ1.pdf
- Description:
- AEC-Q100, -5-V TO 110-V, BIDIREC
- Quantity:
- Payment:
- Shipping:
Inventory:2,022
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
INA296A3QDGKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 (−40°C to 125°C) ultra-precise bidirectional current sense amplifier with 50V/V fixed gain, −5V to 110V common-mode input range, 1.1MHz bandwidth, and ±10µV max input offset voltage. It enables high-accuracy shunt-based current monitoring in automotive high-side DC/DC converters and battery management systems.
For engineers reviewing the INA296A3QDGKRQ1 datasheet, INA296A3QDGKRQ1 pinout, INA296A3QDGKRQ1 application, or INA296A3QDGKRQ1 equivalent, this page delivers verified specifications, package mapping to VSSOP-8, functional safety documentation support, and real-world implementation context for automotive-grade current sensing.
Technical Context
The INA296A3QDGKRQ1 uses a zero-drift, precision topology to achieve ±10µV max input offset and ±0.01% max gain error across −40°C to 125°C, with CMRR of 166dB (typical). Its input bias current remains constant at 35µA (typical) over the full −5V to 110V common-mode range - independent of VCM - enabling accurate low-leakage sensing in high-voltage automotive subsystems.
It supports configurable unidirectional or bidirectional output via dual reference pins (REF1/REF2), operates from 2.7V–20V supply, and delivers 8V/µs slew rate with 1µs settling time to 1%. The device is qualified per AEC-Q100 Grade 1 and includes functional safety documentation for ISO 26262 ASIL-B system integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50V/V - sets output scaling for 20mV full-scale shunt voltage to produce 1V output, optimizing dynamic range for mid-current BMS applications. |
| Common-Mode Range | −5V to 110V - supports direct high-side sensing on 48V/60V automotive buses without level-shifting or external protection. |
| Input Offset Voltage | ±10µV (max) - enables sub-1mA accuracy with 1mΩ shunts at room temperature, critical for low-power sleep-state current monitoring. |
| Bandwidth | 1.1MHz - ensures faithful reproduction of fast transient currents (e.g., inverter switching edges or fault pulses) without phase lag. |
| CMRR | 166dB (typical) - rejects >99.99999% of common-mode noise from noisy 48V rail transients, preserving signal integrity in EMI-heavy environments. |
| Supply Range | 2.7V to 20V - allows operation from 3.3V logic rails or direct connection to 12V/16V vehicle systems without regulators. |
| Quiescent Current | 2.5mA - balances precision performance with power budget constraints in always-on vehicle modules. |
Pinout & Package
VSSOP-8 (DGK) package: 3mm × 4.9mm body, 0.65mm pitch, exposed thermal pad (not electrically connected), RoHS-compliant, moisture sensitivity level 2a.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+ | Current-sense amplifier positive input | Connect to bus-voltage side of shunt in high-side config; load side in low-side config - handles up to 110V common-mode. |
| IN− | Current-sense amplifier negative input | Connect to load side of shunt in high-side config; ground side in low-side config - differential input pair with matched layout. |
| GND | Ground reference | Analog ground return path; must be star-connected near shunt to avoid measurement errors from PCB IR drop. |
| REF1 / REF2 | Reference voltage inputs | Set output baseline: tie both to VS/2 for bidirectional output centered at mid-supply; tie one to GND/VS for unidirectional mode. |
| OUT | Amplified output voltage | Delivers 50×(VIN+−VIN−) + VREF; swings within 20mV of GND and 200mV below VS under 10kΩ load. |
| VS | Power supply | 2.7V–20V analog supply; powers internal amplifiers and reference network - decouple with ≥1µF ceramic close to pin. |
| NC | No-connect terminal | Pin 4 is reserved and must be connected to GND per datasheet; not left floating to prevent coupling or instability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation - meets automotive powertrain and chassis module reliability requirements. |
| Functional safety documentation | Includes FIT rate, failure mode analysis, and diagnostic coverage guidance - accelerates ISO 26262 ASIL-B hardware integration. |
| Constant 35µA input bias current | Unaffected by common-mode voltage up to 110V - eliminates gain error drift in high-VCM applications like 48V starter-generator monitoring. |
| 1µs settling to 1% | Enables detection of <1µs overcurrent events in DC/DC converter short-circuit protection loops without added latency. |
| Zero-drift architecture | Maintains ±10µV offset and ±1ppm/°C gain drift - ensures stable calibration over lifetime without periodic re-zeroing. |
Applications
| High-Side Battery Monitoring | 48V DC/DC Converter Protection |
|---|---|
Use Scenario: Real-time bidirectional current measurement in 48V mild-hybrid battery packs during charge/discharge cycles. IC Role / Device Role / Timing Role: High-side current sense amplifier with 50V/V gain, referenced to mid-supply for ±2.5V output swing around 2.5V. Use Value: ±10µV offset enables ≤0.5A accuracy with 2mΩ shunt; 1.1MHz bandwidth captures regenerative braking transients without aliasing. |
Use Scenario: Fast overcurrent detection in automotive 48V-to-12V buck converters during MOSFET shoot-through faults. IC Role / Device Role / Timing Role: High-speed current monitor feeding comparator input; 1µs settling time triggers shutdown before energy dissipation exceeds safe limits. Use Value: 8V/µs slew rate and 1.1MHz bandwidth ensure output faithfully tracks 100ns current spikes - enabling <500ns fault response. |
| Smart Junction Box Load Control | Fuel Cell Stack Current Regulation |
Use Scenario: Precision current feedback for PWM-controlled solenoid drivers and HVAC actuators in centralized vehicle power distribution units. IC Role / Device Role / Timing Role: Low-drift bidirectional amplifier interfacing with 16-bit ADC; REF1/REF2 configured for unidirectional 0–5V output. Use Value: ±0.01% gain error ensures consistent torque control across temperature; 166dB CMRR rejects noise from adjacent high-current switching loads. |
Use Scenario: Closed-loop current regulation of PEM fuel cell stacks operating at −5V to 80V common-mode with rapid load changes. IC Role / Device Role / Timing Role: Primary current sensor in stack controller; measures bidirectional current during startup, idle, and peak power delivery phases. Use Value: −5V to 110V common-mode range accommodates reverse-polarity protection circuits; constant bias current prevents measurement shift during voltage reversal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A3QDRQ1 | Same 50V/V gain, but ±100µV max offset and ±0.2% max gain error; lower CMRR (150dB); no functional safety documentation. | Acceptable for non-safety-critical 12V BMS or infotainment power monitoring where cost is prioritized over precision. | Select when AEC-Q100 Grade 1 and functional safety support are not required, and ±100µV offset is sufficient for system accuracy. |
| MAX40056ATA+T | 50V/V gain, ±25µV max offset, 1.5MHz bandwidth, but only −0.2V to 65V common-mode range; not AEC-Q100 qualified. | Suitable for industrial 24V/48V UPS or server power supplies - lacks automotive qualification and high-VCM capability. | Choose for non-automotive applications needing higher bandwidth and lower offset than INA240, but where 110V common-mode is unnecessary. |
Compared with INA240A3QDRQ1 and MAX40056ATA+T, the INA296A3QDGKRQ1 uniquely combines AEC-Q100 Grade 1 qualification, 110V common-mode tolerance, ±10µV offset, and functional safety documentation - making it the only option qualified for ASIL-B–rated high-side current sensing in 48V automotive systems.
Availability
INA296A3QDGKRQ1 is available at Aetrix Electronics and suitable for automotive battery management systems, 48V DC/DC converters, smart junction boxes, and fuel cell control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for INA296A3QDGKRQ1 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 delivering analog and embedded processing solutions, with deep expertise in precision signal chain and automotive-qualified ICs.
The INA296x-Q1 product line was designed specifically for high-reliability, high-precision current sensing in automotive electrification systems - targeting ASIL-B compliance, wide common-mode operation, and zero-drift stability across −40°C to 150°C.
FAQ
What is the maximum common-mode voltage the INA296A3QDGKRQ1 can handle?
The INA296A3QDGKRQ1 supports an operational common-mode input range of −5V to 110V and a survival range of −20V to 120V. This allows direct high-side sensing on 48V and 60V automotive buses without external level-shifting circuitry. The device maintains specified performance across this full range, including at 110V, with no degradation in offset or gain error.
Does the INA296A3QDGKRQ1 support bidirectional current sensing?
Yes, the INA296A3QDGKRQ1 supports true bidirectional current sensing via its dual reference inputs (REF1 and REF2). When both are biased at VS/2, the output centers at VS/2 and swings above/below that point to indicate direction. This enables precise monitoring of charge/discharge currents in 48V battery systems without polarity-switching circuitry.
What package type is used for the INA296A3QDGKRQ1?
The INA296A3QDGKRQ1 is packaged in an 8-pin VSSOP (DGK) package measuring 3mm × 4.9mm with 0.65mm lead pitch. This thermally enhanced, surface-mount package provides robust performance in automotive under-hood environments and is compatible with standard reflow profiles.
How does the INA296A3QDGKRQ1 achieve low offset drift over temperature?
The INA296A3QDGKRQ1 employs a zero-drift chopper-stabilized architecture that actively corrects input offset voltage in real time. This results in a maximum input offset drift of ±0.1µV/°C and ±1ppm/°C gain drift over −40°C to +125°C - ensuring stable calibration without recalibration across vehicle operating conditions.
Is functional safety documentation available for the INA296A3QDGKRQ1?
Yes, Texas Instruments provides functional safety documentation for the INA296A3QDGKRQ1, including FMEDA reports, FIT rate calculations, and diagnostic coverage analysis. This supports ISO 26262 ASIL-B hardware integration in automotive safety-related systems such as battery disconnect units and motor controllers.
INA296A3QDGKRQ1 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:
- 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-VSSOP
INA296A3QDGKRQ1 FAQ
1.How can I place an order for INA296A3QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA296A3QDGKRQ1 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 INA296A3QDGKRQ1 reliable?
The price and inventory of INA296A3QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA296A3QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for INA296A3QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA296A3QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA296A3QDGKRQ1?
INA296A3QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA296A3QDGKRQ1 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 INA296A3QDGKRQ1?
For technical support, including INA296A3QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA296A3QDGKRQ1 requirements.
6.How does Aetrix verify that INA296A3QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA296A3QDGKRQ1 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 INA296A3QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of INA296A3QDGKRQ1?
All INA296A3QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA296A3QDGKRQ1, 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 INA296A3QDGKRQ1 part is unused and in its original packaging.
Return procedure for INA296A3QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA296A3QDGKRQ1 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…
