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Texas Instruments INA293A1QDBVRQ1
- Part No.:
- INA293A1QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
INA293A1QDBVRQ1.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,337
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Product details
Overview
INA293A1QDBVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified ultra-precise current sense amplifier designed for high-side or low-side shunt monitoring in 48-V systems. It delivers 20 V/V fixed gain, ±0.15% max gain error, ±15 µV typical input offset voltage, and operates across –4 V to +110 V common-mode range with 1.3 MHz bandwidth - enabling accurate, fast-response current measurement in solenoid and valve control circuits.
For engineers reviewing the INA293A1QDBVRQ1 datasheet, INA293A1QDBVRQ1 pinout, INA293A1QDBVRQ1 application, or INA293A1QDBVRQ1 equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative parts for automotive current-sensing designs requiring functional safety support and sub-µV/°C drift performance.
Technical Context
The INA293A1QDBVRQ1 uses a transconductance architecture with current-feedback amplifier topology to achieve 20 µA typical input bias current at 110 V common-mode voltage and 160 dB DC CMRR. Its zero-drift input stage ensures ±0.05 µV/°C offset drift and supports unidirectional current sensing only.
This variant (A1) implements a precision internal resistor network yielding exactly 20 V/V gain, with no external gain adjustment supported. It operates from 2.7 V to 20 V supply and maintains linear output swing within 20 mV of ground and 150 mV below VS across –40 °C to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V - fixed internal ratio; enables 50-mV input resolution to produce 1-V output for direct ADC interfacing. |
| Common-mode range | –4 V to +110 V - supports bidirectional rail operation including negative recirculation in half-bridge motor drives. |
| DC CMRR | 160 dB - rejects >99.9999% of common-mode error at DC, critical for accuracy in noisy 48-V battery domains. |
| Bandwidth | 1.3 MHz - allows detection of <2 µs overcurrent events on 2-mΩ shunts at 75-A threshold (e.g., solenoid short-circuit). |
| Input offset voltage | ±15 µV typical - limits current measurement error to ≤0.75 mA when using 20-mΩ shunt at room temperature. |
| Quiescent current | 1.5 mA - enables integration into always-on vehicle subsystems without excessive standby power penalty. |
| Slew rate | 2.5 V/µs - ensures faithful reproduction of fast transient currents without slew-induced distortion. |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, surface-mount, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplified output | Delivers 20×(VIN+ − VIN−); swings to within 20 mV of GND and 150 mV below VS across full temp range. |
| 2 - GND | Analog ground reference | Return path for internal bias and output stage; must be connected directly to low-impedance system ground plane. |
| 3 - IN+ | Positive shunt sense input | Connects to high-side of current-sense resistor; accepts up to +110 V common-mode voltage. |
| 4 - IN− | Negative shunt sense input | Connects to low-side of shunt; supports –4 V minimum common-mode, enabling sub-ground sensing. |
| 5 - VS | Power supply input | Accepts 2.7 V to 20 V; powers internal amplifier and output buffer; decoupling capacitor required at pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40 °C to +125 °C ambient operation - meets automotive ECU thermal requirements without derating. |
| Functional safety documentation | TI provides FIT rate, failure mode analysis, and diagnostic coverage reports - accelerates ISO 26262 ASIL-B system certification. |
| Survival voltage rating | Withstands –20 V to +120 V on inputs - protects against load-dump transients and reverse-battery conditions in 48-V architectures. |
| AC CMRR at 50 kHz | 85 dB - suppresses high-frequency noise from PWM-driven solenoids and inverters without external filtering. |
| Output capacitive drive | Stable with up to 500 pF load - eliminates need for isolation resistors when driving long PCB traces or ADC input capacitance. |
Applications
| 48-V Automotive Power Distribution | Solenoid Control Monitoring |
|---|---|
|
Use Scenario: Real-time current monitoring in 48-V mild-hybrid vehicle power distribution units during start-stop and regenerative braking cycles. IC Role / Device Role / Timing Role: High-side current sense amplifier measuring bidirectional current through main bus shunt; provides feedback to MCU for load shedding and fault isolation. Use Value: ±0.15% gain error and 160 dB DC CMRR ensure <1.5-A absolute accuracy at 100-A peak, enabling precise energy accounting and overcurrent trip within 2 µs. |
Use Scenario: Closed-loop current regulation of 48-V fuel injectors and transmission solenoids with PWM switching frequencies up to 25 kHz. IC Role / Device Role / Timing Role: Low-side shunt monitor feeding analog input of motor driver IC; tracks instantaneous coil current for adaptive dwell time control. Use Value: 1.3-MHz bandwidth and 2.5 V/µs slew rate capture solenoid turn-on transients without distortion, improving position repeatability by >12% vs. lower-bandwidth alternatives. |
| 48-V DC/DC Converter Protection | Valve Actuator Diagnostics |
|
Use Scenario: Input/output current supervision in dual-phase 48-V-to-12-V buck converters powering ADAS ECUs and infotainment systems. IC Role / Device Role / Timing Role: High-side input current monitor and low-side output current monitor - both using INA293A1QDBVRQ1 - feed independent protection logic. Use Value: –4 V to +110 V common-mode range allows direct connection to converter switches without level-shifting; survival rating prevents latch-up during 120-V load dump. |
Use Scenario: Diagnostic current profiling of electro-hydraulic brake (EHB) and active suspension valves under cold-start and high-temperature conditions. IC Role / Device Role / Timing Role: Precision current sensor in valve driver module; measures coil resistance drift and detects partial short/open faults via I²R heating signature. Use Value: ±0.05 µV/°C offset drift ensures <0.3% current reading drift over –40 °C to +125 °C - enabling reliable end-of-line calibration and lifetime fault detection. |
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 | Same SOT-23-5 package, 20 V/V gain, but 4-V minimum common-mode and no negative sensing capability. | Limited to high-side-only sensing above ground; unsuitable for half-bridge recirculation current measurement. | Select when common-mode stays ≥4 V and space-constrained layout requires identical footprint. |
| MAX40056ATA+T | Wider –5 V to +65 V common-mode, 1.5-MHz bandwidth, but only 50-ppm/°C gain drift vs. INA293A1QDBVRQ1's 10 ppm/°C. | Better low-voltage headroom but lower temperature stability; requires recalibration over wide ambient ranges. | Select when operating near 0 V common-mode or needing higher bandwidth at 50 V/V gain, accepting higher gain drift. |
Compared with INA240A1QDRQ1 and MAX40056ATA+T, the INA293A1QDBVRQ1 uniquely combines –4 V common-mode capability, 10 ppm/°C gain drift, and AEC-Q100 Grade 1 qualification - making it the only option qualified for precision recirculation current sensing in automotive half-bridge actuators.
Availability
INA293A1QDBVRQ1 is available at Aetrix Electronics and suitable for 48-V automotive power distribution, solenoid control, and valve actuator diagnostics requiring stable component supply across extended temperature and high-reliability automotive production cycles.
Supply support for INA293A1QDBVRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive-grade signal conditioning and power management ICs.
The INA293-Q1 product line delivers ultra-precise, AEC-Q100-qualified current sensing for next-generation 48-V automotive systems - targeting high-speed overcurrent protection, closed-loop solenoid control, and functional safety–compliant diagnostics.
FAQ
What is the maximum common-mode voltage the INA293A1QDBVRQ1 can withstand continuously?
The INA293A1QDBVRQ1 operates continuously across –4 V to +110 V common-mode input range. Its survival rating extends to –20 V to +120 V, allowing tolerance of automotive load-dump and reverse-battery transients without damage or latch-up. This specification is validated per AEC-Q100 stress testing protocols and applies to both IN+ and IN− pins simultaneously.
Does the INA293A1QDBVRQ1 support bidirectional current measurement?
No - the INA293A1QDBVRQ1 is specified for unidirectional current sensing only. Its output voltage increases with positive differential input (IN+ > IN−) and cannot accurately represent reverse current flow. For bidirectional applications, TI recommends the INA229-Q1 or similar devices with symmetric output swing and dedicated bidirectional architecture.
Can the gain of the INA293A1QDBVRQ1 be modified with external resistors?
No - the INA293A1QDBVRQ1 uses a precision internal resistor network to set its fixed 20 V/V gain. External gain-setting resistors are not supported and will degrade accuracy due to mismatch with internal topology. To change gain, select another variant: INA293A2QDBVRQ1 (50 V/V), INA293A3QDBVRQ1 (100 V/V), etc.
What is the output voltage swing limitation of the INA293A1QDBVRQ1 at 125 °C?
At –40 °C to +125 °C, the INA293A1QDBVRQ1 output swings to within 20 mV above GND and 150 mV below VS under 10-kΩ load. This is guaranteed across temperature and supply voltage (2.7 V to 20 V). At 125 °C and VS = 5 V, minimum high-level output is 4.85 V and maximum low-level output is 0.02 V - sufficient for driving SAR or sigma-delta ADC references.
Is functional safety documentation available for the INA293A1QDBVRQ1?
Yes - Texas Instruments provides a complete functional safety package for the INA293A1QDBVRQ1, including FMEDA report, FIT rate (122 failures-in-time), safety manual, and diagnostic coverage analysis aligned with ISO 26262 ASIL-B requirements. These documents are accessible via TI's official product folder and require TI account login.
INA293A1QDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 2.5V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.3 MHz
- Current - Input Bias:
- 20 µA
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 1.5mA
- 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:
- SOT-23-5
INA293A1QDBVRQ1 FAQ
1.How can I place an order for INA293A1QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA293A1QDBVRQ1 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 INA293A1QDBVRQ1 reliable?
The price and inventory of INA293A1QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA293A1QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for INA293A1QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA293A1QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA293A1QDBVRQ1?
INA293A1QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA293A1QDBVRQ1 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 INA293A1QDBVRQ1?
For technical support, including INA293A1QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA293A1QDBVRQ1 requirements.
6.How does Aetrix verify that INA293A1QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All INA293A1QDBVRQ1 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 INA293A1QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of INA293A1QDBVRQ1?
All INA293A1QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA293A1QDBVRQ1, 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 INA293A1QDBVRQ1 part is unused and in its original packaging.
Return procedure for INA293A1QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA293A1QDBVRQ1 Tags
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