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Texas Instruments INA193AIDBVR
- Part No.:
- INA193AIDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
INA193AIDBVR.pdf
- Description:
- IC CURRENT MONITOR 3% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,700
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Product details
Overview
INA193AIDBVR from Texas Instruments is a high-voltage current shunt monitor IC designed for bidirectional sensing across shunt resistors in power rails with common-mode voltages from −16 V to +80 V. It delivers 20 V/V fixed gain, 500 kHz bandwidth, ±2.2% total output error over temperature (−40°C to +125°C), and operates from a single 2.7 V to 18 V supply drawing ≤900 μA - enabling precise real-time current monitoring in automotive battery management and telecom power supplies.
For engineers reviewing the INA193AIDBVR datasheet, INA193AIDBVR pinout, INA193AIDBVR application, or INA193AIDBVR equivalent, key selection criteria include its −16 V to +80 V common-mode range, SOT-23-5 package footprint, 20 V/V transfer function, and compatibility with low-side or high-side shunt configurations in safety-critical power systems.
Technical Context
The INA193AIDBVR employs a patented dual-amplifier front-end architecture that converts differential input voltage into a current, then back to voltage via precision internal resistors - eliminating reliance on matched external resistor networks for wide common-mode rejection. This enables stable operation across −16 V to +80 V common-mode while powered from a single 2.7–18 V rail.
Its 500 kHz bandwidth supports fast current control loops in switching regulators and motor drives; the 20 V/V gain provides 20 mV input → 400 mV output scaling, optimized for 50–100 mV full-scale shunt drops. Input bias current remains ≤±16 μA across the full common-mode range, minimizing measurement error in high-impedance sensing paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Common-Mode Range | −16 V to +80 V: Enables direct sensing on battery terminals, HV DC rails, or negative-ground industrial buses without level-shifting. |
| Fixed Gain | 20 V/V: Converts 100 mV shunt drop to 2.0 V output - simplifies ADC interfacing with 3.3 V or 5 V reference systems. |
| Bandwidth | 500 kHz: Supports closed-loop current regulation in buck converters, Class-D amplifiers, and fast-response protection circuits. |
| Total Output Error | ±2.2% over −40°C to +125°C: Includes gain error, offset drift, and CMR degradation - suitable for <1% accuracy system-level calibration. |
| Supply Current | ≤900 μA max: Enables always-on monitoring in battery-powered equipment with minimal standby power impact. |
| Operating Temp | −40°C to +125°C: Qualified for under-hood automotive, base station power modules, and industrial motor controllers. |
| Input Offset (RTI) | ±3 mV max over temp: Defines minimum resolvable shunt voltage - sets practical lower limit of ~150 μΩ at 20 A for 100 mV FS. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm footprint, 1.3 mm height - compatible with standard pick-and-place and reflow processes; thermal resistance θJA = 221.7°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Analog output | Voltage output proportional to shunt voltage (VOUT = 20 × VSENSE); drives 100 kΩ load with <1.5 Ω source impedance. |
| 2 - GND | Analog ground reference | Return path for output stage and internal biasing; must connect to system power ground near shunt for accurate RTI measurements. |
| 3 - VIN+ | Positive shunt terminal input | Connects to supply-side of shunt resistor; withstands −16 V to +80 V common-mode regardless of V+ supply voltage. |
| 4 - VIN− | Negative shunt terminal input | Connects to load-side of shunt resistor; differential input handles up to ±18 V, supporting bidirectional current detection. |
| 5 - V+ | Analog supply | Single 2.7 V to 18 V rail powers internal amplifiers and output buffer; bypass capacitor required between V+ and GND. |
Key Features
| Feature | Design Value |
|---|---|
| Wide common-mode sensing | Operates with VIN+ at −16 V (e.g., battery negative monitoring) or +80 V (e.g., 48 V telecom bus) while V+ = 5 V - eliminates isolation or level-shift components. |
| High CMRR | 94 dB min (100 dB typ) at DC ensures immunity to rail noise - critical when measuring small shunt drops amid large common-mode transients. |
| Low quiescent current | 700–900 μA over full temperature range enables continuous current logging in energy-sensitive applications like portable medical devices. |
| Fast settling | 2 μs to 1% for 10–100 mV step input (CLOAD = 5 pF) - supports cycle-by-cycle current limiting in high-frequency SMPS. |
| Robust ESD rating | ±4000 V HBM / ±1000 V CDM protects against handling damage and board-level ESD events in manufacturing and field service. |
Applications
| Automotive Battery Monitoring | Telecom 48 V Power Distribution |
|---|---|
|
Use Scenario: Real-time monitoring of starter battery charge/discharge current in vehicles with stop-start systems. IC Role / Device Role / Timing Role: High-side current sensor placed between battery positive and main distribution bus; measures bidirectional current with −16 V to +16 V common-mode swing during cranking. Use Value: Enables accurate state-of-charge estimation and load shedding decisions using only the INA193AIDBVR's 20 V/V output and onboard MCU ADC - no external op amps or isolators required. |
Use Scenario: Inline current supervision for redundant 48 V DC feeds in cellular base station power shelves. IC Role / Device Role / Timing Role: Low-side shunt monitor on each 48 V input rail; detects overcurrent faults within 2 μs to trigger hot-swap controller shutdown before MOSFET failure. Use Value: Leverages 500 kHz bandwidth and ±2.2% error spec to meet IEC 62368-1 fault response timing - reduces BOM count by replacing discrete comparator + reference solutions. |
| Laptop Adapter Power Management | Industrial Motor Drive Phase Current Sensing |
|
Use Scenario: Input current limiting in USB-C PD 100 W adapters to comply with UL 62368-1 short-circuit energy limits. IC Role / Device Role / Timing Role: High-side monitor on primary-side 20 V rail; interfaces directly to PWM controller's current sense input for cycle-by-cycle peak current mode control. Use Value: 20 V/V gain maps 50 mV shunt drop to 1.0 V - matches typical controller reference thresholds without scaling resistors, improving loop stability. |
Use Scenario: Phase current feedback in 3-phase BLDC inverters for HVAC compressors operating at 400 V DC bus. IC Role / Device Role / Timing Role: Low-side shunt amplifier on each phase leg; withstands −16 V flyback spikes during PWM dead-time without latch-up or damage. Use Value: −16 V to +80 V common-mode range eliminates need for isolated sigma-delta modulators - cuts cost and PCB area vs. competing solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1DR | 20 V/V gain, 4 V/V offset, 105 dB CMRR, 1050 kHz BW, SOIC-8 package | Better accuracy (±0.2% max error) and higher bandwidth but requires larger layout area and external 0 V reference for unidirectional use | Select for precision closed-loop motor control where layout space allows SOIC-8 and tighter error budget is mandatory |
| MAX4080TASA+ | 20 V/V gain, 80 V/V optional, 86 dB CMRR, 250 kHz BW, SOIC-8 package | Lower CMRR and bandwidth; includes integrated 2.5 V reference for single-supply ADC interfacing | Select when integrating with 2.5 V ADCs and moderate accuracy (±3.5% error) suffices - avoids external reference design effort |
Compared with INA240A1DR and MAX4080TASA+, the INA193AIDBVR offers the smallest footprint (SOT-23-5) and widest common-mode range (−16 V to +80 V) at the trade-off of moderate accuracy - making it optimal for space-constrained, high-voltage industrial and automotive sensing where PCB real estate is premium.
Availability
INA193AIDBVR is available at Aetrix Electronics and suitable for automotive battery monitoring, telecom 48 V power distribution, and laptop adapter power management requiring stable component supply across extended temperature and voltage ranges.
Supply support for INA193AIDBVR 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 precision signal conditioning and power management ICs.
The INA19x family was engineered specifically for high-common-mode current sensing in automotive, industrial, and telecom power systems - prioritizing wide voltage range, robustness, and minimal external component count over ultra-high precision.
FAQ
What is the maximum common-mode voltage the INA193AIDBVR can handle?
The INA193AIDBVR supports a common-mode input voltage range of −16 V to +80 V, independent of its supply voltage (2.7 V to 18 V). This allows direct connection to battery negatives, 48 V telecom rails, or industrial HV buses without level-shifting circuitry - verified per TI SBOS307G datasheet Section 7.3.
Does the INA193AIDBVR support bidirectional current sensing?
Yes, the INA193AIDBVR supports bidirectional current sensing because its differential inputs (VIN+ and VIN−) accept both polarities of VSENSE = VIN+ − VIN−. When VSENSE is negative, the output voltage drops below the mid-rail point - confirmed by Figure 26 in the INA193AIDBVR datasheet showing behavior down to −300 mV output under negative VSENSE.
What is the output swing capability of the INA193AIDBVR?
The INA193AIDBVR output swings from (V+) − 0.2 V down to GND + 50 mV (typical) with 100 kΩ load. At V+ = 5 V, this yields 0.05 V to 4.8 V output range - sufficient to drive most 12-bit ADCs directly. Full swing specifications are detailed in Section 7.5 "Voltage Output" of the SBOS307G datasheet.
Can the INA193AIDBVR be used with a 3.3 V supply?
Yes, the INA193AIDBVR operates from 2.7 V to 18 V, so 3.3 V is fully supported. At 3.3 V supply, output swing is approximately 0.05 V to 3.1 V, and total output error remains within ±2.2% over temperature - validated in TI's recommended operating conditions table (Section 7.3) and electrical characteristics (Section 7.5).
How does the INA193AIDBVR differ from the INA196AIDBVR?
The INA193AIDBVR and INA196AIDBVR share identical electrical specs (20 V/V gain, −16 V to +80 V CM range) but differ in pinout: INA193 uses Pinout #1 (VIN+ on pin 3, VIN− on pin 4), while INA196 uses Pinout #2 (VIN+ on pin 4, VIN− on pin 5). This prevents direct PCB substitution without layout revision - specified in Table 5 "Device Comparison Table" of SBOS307G.
INA193AIDBVR 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
INA193AIDBVR FAQ
1.How can I place an order for INA193AIDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA193AIDBVR 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 INA193AIDBVR reliable?
The price and inventory of INA193AIDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA193AIDBVR is usually 5 days.
3.What payment methods are accepted for INA193AIDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA193AIDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA193AIDBVR?
INA193AIDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA193AIDBVR 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 INA193AIDBVR?
For technical support, including INA193AIDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA193AIDBVR requirements.
6.How does Aetrix verify that INA193AIDBVR is sourced from the original manufacturer or authorized distributors?
All INA193AIDBVR 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 INA193AIDBVR meets industry standards.
7.What is the process for return or replacement of INA193AIDBVR?
All INA193AIDBVR units undergo pre-shipment inspection (PSI). If there is an issue with INA193AIDBVR, 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 INA193AIDBVR part is unused and in its original packaging.
Return procedure for INA193AIDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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