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Texas Instruments INA196AQDBVRQ1
- Part No.:
- INA196AQDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
INA196AQDBVRQ1.pdf
- Description:
- IC CURRENT MONITOR 3% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,541
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Product details
Overview
INA196AQDBVRQ1 from Texas Instruments is an automotive-grade current shunt monitor IC with voltage output, designed for high-side and low-side bidirectional current sensing in systems with common-mode voltages from –16 V to +80 V. It delivers 50 V/V gain, ±2% total output error over temperature, 500-kHz bandwidth, and operates from a single 2.7-V to 18-V supply. It is used in HEV/EV powertrain battery monitoring and body control module load health diagnostics.
For engineers reviewing the INA196AQDBVRQ1 datasheet, INA196AQDBVRQ1 pinout, INA196AQDBVRQ1 application, or INA196AQDBVRQ1 equivalent, key selection criteria include its wide common-mode range, guaranteed 500-kHz bandwidth for motor current control loops, automotive AEC-Q100 qualification, functional safety documentation support, and SOT-23 (5-pin) package compatibility with space-constrained PCB layouts.
Technical Context
The INA196AQDBVRQ1 employs a patented dual-amplifier front-end architecture that enables operation across –16 V to +80 V common-mode voltage independent of supply rail. It converts differential shunt voltage into a proportional output current via internal 5-kΩ resistors, then reconverts to voltage using precision gain-setting resistors and an output buffer.
This architecture eliminates reliance on matched resistor networks for common-mode rejection, achieving ≥100 dB CMR at DC and >80 dB up to 100 kHz. Its 50 V/V transfer function is fixed and factory-trimmed, supporting accurate current measurement with minimal external components in automotive powertrain and battery management signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V - fixed, factory-trimmed transfer function; outputs 50 mV per 1 mV shunt drop, enabling direct interface with 12-bit ADCs without scaling. |
| Common-mode range | –16 V to +80 V - supports bidirectional sensing in 12-V/48-V/80-V automotive systems, including negative ground-referenced loads and positive high-voltage rails. |
| Bandwidth | 500 kHz - sufficient for closed-loop motor current control and fast transient detection in EV inverter gate drivers and DC-DC converters. |
| Total output error | ±3% max over –40°C to +125°C - includes gain error and input offset drift; ensures <±1.5 A error for 50-A full-scale shunt-based measurements. |
| Supply voltage | 2.7 V to 18 V - compatible with automotive battery-supplied rails; allows operation during cold-crank (down to 2.7 V) and load-dump transients (up to 18 V). |
| Quiescent current | 700–1250 μA - enables always-on monitoring in low-power body control modules without excessive standby drain. |
| Output swing | V+ – 0.2 V to GND + 50 mV - rail-to-rail capable output drives standard analog inputs directly; no level-shifting required for MCU ADCs. |
Pinout & Package
SOT-23 (5-pin) package, 2.90 mm × 1.60 mm body size, surface-mount, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Analog output | Single-ended voltage output proportional to shunt current; drives 100-kΩ loads with ≤1.5-Ω impedance; requires no external buffer for most MCU ADCs. |
| GND (Pin 2) | Ground reference | Return path for internal bias currents and output stage; must be connected to system analog ground with low-impedance trace to minimize noise coupling. |
| V+ (Pin 3) | Power supply | Input for 2.7–18-V analog supply; bypass capacitor (0.1 μF ceramic) required adjacent to pin for stability and noise immunity. |
| VIN– (Pin 4) | Differential input (low side) | Connects to load side of shunt resistor; forms differential pair with VIN+; input bias current ±8–23 μA affects low-current accuracy below 1 A. |
| VIN+ (Pin 5) | Differential input (high side) | Connects to supply side of shunt resistor; tolerates –16 V to +80 V common-mode; internal 5-kΩ input impedance sets gain and filtering behavior. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Rated for –40°C to +125°C ambient operation with production test coverage for automotive reliability; supports ASIL-B system integration. |
| Functional safety documentation | TI provides FIT rate, failure mode analysis, and diagnostic coverage reports to accelerate ISO 26262 ASIL-B hardware development. |
| Wide common-mode rejection | ≥100 dB CMR at DC and ≥80 dB at 100 kHz - enables accurate current sensing in noisy 48-V mild-hybrid systems with PWM switching noise. |
| Low quiescent current | Max 1.25 mA - allows continuous monitoring in always-on vehicle domains (e.g., battery disconnect units) without compromising sleep-mode current budgets. |
| Fast settling time | 2 μs to 1% for 10–100 mV step - supports real-time current limiting in motor drive fault protection circuits. |
Applications
| HEV/EV Powertrain Inverter | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time phase current measurement in traction inverter IGBT gate drivers for torque control and overcurrent shutdown. IC Role / Device Role / Timing Role: High-side current shunt monitor with 500-kHz bandwidth feeding analog input of MCU-based PWM controller. Use Value: Enables precise current regulation within 2 μs response window, preventing IGBT thermal runaway during regenerative braking transients. | Use Scenario: Monitoring solenoid and lamp load health in door module and seat control units. IC Role / Device Role / Timing Role: Bidirectional current sensor detecting open/short faults and inrush current profiles during actuator activation. Use Value: Detects <100-mA leakage faults and >5-A inrush peaks with ±3% error, reducing false diagnostics and extending relay life. |
| 48-V Mild Hybrid Battery Management | Industrial Telecom Power Supply |
Use Scenario: Bidirectional current sensing across battery pack shunt for state-of-charge (SOC) and state-of-health (SOH) estimation. IC Role / Device Role / Timing Role: Low-drift, wide common-mode monitor interfaced to isolated sigma-delta ADC for galvanically separated BMS communication. Use Value: Maintains ±2% accuracy across –16 V to +80 V range, enabling accurate coulomb counting even during cold-crank (–16 V) and load-dump (80 V) events. | Use Scenario: Input current monitoring in 48-V telecom rectifier modules for overload protection and efficiency optimization. IC Role / Device Role / Timing Role: High-side current sense amplifier driving protection comparator and digital power manager. Use Value: Delivers 500-kHz bandwidth and 3% error to trigger fast shutdown (<100 μs) during short-circuit events, meeting GR-1089 Class A surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | Higher bandwidth (1050 kHz), lower offset (±20 μV), but only 20 V/V gain; requires external gain stage for 50× scaling. | Better suited for high-speed motor control where bandwidth >800 kHz is mandatory; less optimal for cost-sensitive BCM designs requiring fixed 50× gain. | Select INA240A1QDRQ1 when bandwidth >800 kHz or offset <±50 μV is required; otherwise INA196AQDBVRQ1 offers simpler layout and lower BOM count. |
| MAX40056ATA+T | Wider common-mode (–20 V to +110 V), higher gain accuracy (±0.5% typ), but 5-pin SOT-23-5 pinout differs (VIN+, GND, OUT, V+, VIN– vs. INA196A's VIN+, VIN–, V+, GND, OUT). | Preferred for 110-V industrial UPS or server PSUs; not pin-compatible due to swapped GND and V+ positions - requires PCB redesign. | Choose MAX40056ATA+T only if common-mode >80 V or offset drift <1 μV/°C is critical; avoid for drop-in replacement due to non-identical pin mapping. |
Compared with INA240A1QDRQ1 and MAX40056ATA+T, the INA196AQDBVRQ1 provides the optimal balance of fixed 50 V/V gain, AEC-Q100 qualification, 500-kHz bandwidth, and SOT-23 footprint for mainstream automotive current monitoring - eliminating external gain stages while maintaining robustness across cold-crank and load-dump conditions.
Availability
INA196AQDBVRQ1 is available at Aetrix Electronics and suitable for HEV/EV powertrain inverters, automotive body control modules, and 48-V mild hybrid battery management systems requiring stable component supply across extended product lifecycles.
Supply support for INA196AQDBVRQ1 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 deep expertise in automotive electronics and functional safety solutions.
The INA19xA-Q1 product line was engineered specifically for automotive current sensing in harsh environments, delivering wide common-mode range, AEC-Q100 compliance, and integrated functional safety documentation to accelerate ASIL-B system development.
FAQ
What is the common-mode voltage range supported by the INA196AQDBVRQ1?
The INA196AQDBVRQ1 supports a common-mode voltage range of –16 V to +80 V, enabling accurate current sensing in both negative-ground and high-voltage automotive systems such as 12-V starter batteries, 48-V mild hybrids, and 80-V traction inverters. This range is independent of the device's 2.7–18-V supply voltage, allowing operation even when the shunt is referenced to voltages far outside the supply rails. The INA196AQDBVRQ1 maintains specified accuracy across this full range under recommended operating conditions.
Does the INA196AQDBVRQ1 require external components for basic operation?
No, the INA196AQDBVRQ1 requires only a 0.1-μF ceramic bypass capacitor between V+ and GND for stable operation; no external gain-setting resistors or compensation networks are needed. Its 50 V/V transfer function is internally trimmed and fixed. However, input RC filters may be added for EMI suppression, and output loading should remain ≤100 kΩ to maintain specified accuracy. The INA196AQDBVRQ1 is designed for minimal external component count in space-constrained automotive modules.
How does the INA196AQDBVRQ1 handle bidirectional current sensing?
The INA196AQDBVRQ1 supports bidirectional current sensing through its ability to operate with common-mode voltages down to –16 V, enabling connection across shunts in either high-side or low-side configurations. When the shunt is placed between load and ground (low-side), VIN– connects to ground and VIN+ to the shunt's load side; for high-side placement, VIN+ connects to the supply rail and VIN– to the load. Output polarity indicates direction: positive VOUT for current flowing into the load, negative for reverse flow - provided the output stage is biased appropriately in the host system.
Is the INA196AQDBVRQ1 pin-compatible with other devices in the INA19xA-Q1 family?
Yes, the INA196AQDBVRQ1 shares the same DBV (SOT-23-5) package and pinout as INA197AQDBVRQ1 and INA198AQDBVRQ1 - all use Pin 1=OUT, Pin 2=GND, Pin 3=V+, Pin 4=VIN–, Pin 5=VIN+. It is *not* pin-compatible with INA193A–INA195A-Q1 variants, which use a different pin mapping (e.g., V+ on Pin 5). This allows direct substitution among 50 V/V (INA196A), 100 V/V (INA197A), and 20 V/V (INA198A) variants without PCB changes.
What functional safety documentation is available for the INA196AQDBVRQ1?
Texas Instruments provides comprehensive functional safety documentation for the INA196AQDBVRQ1, including FMEDA reports, FIT rate calculation (124 FIT), diagnostic coverage analysis, and safety manual supporting ISO 26262 ASIL-B development. These documents are accessible via TI's functional safety portal and assist system architects in qualifying the device for automotive safety-critical applications such as battery disconnect units and motor control safety monitors - all without requiring additional external safety mechanisms.
INA196AQDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Monitor
- Sensing Method:
- High-Side
- Accuracy:
- ±3%
- Voltage - Input:
- -16V ~ 80V
- Current - Output:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
INA196AQDBVRQ1 FAQ
1.How can I place an order for INA196AQDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA196AQDBVRQ1 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 INA196AQDBVRQ1 reliable?
The price and inventory of INA196AQDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA196AQDBVRQ1 is usually 5 days.
3.What payment methods are accepted for INA196AQDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA196AQDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA196AQDBVRQ1?
INA196AQDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA196AQDBVRQ1 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 INA196AQDBVRQ1?
For technical support, including INA196AQDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA196AQDBVRQ1 requirements.
6.How does Aetrix verify that INA196AQDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All INA196AQDBVRQ1 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 INA196AQDBVRQ1 meets industry standards.
7.What is the process for return or replacement of INA196AQDBVRQ1?
All INA196AQDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA196AQDBVRQ1, 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 INA196AQDBVRQ1 part is unused and in its original packaging.
Return procedure for INA196AQDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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