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Texas Instruments INA193AMDBVREP
- Part No.:
- INA193AMDBVREP
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
INA193AMDBVREP.pdf
- Description:
- IC CURRENT MONITOR 3% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,238
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Product details
Overview
INA193AMDBVREP from Texas Instruments is a precision current shunt monitor IC with 20 V/V fixed gain, operating from 2.7 V to 18 V supply and supporting –16 V to 80 V common-mode input voltage. It delivers ±2% total output error over temperature, 500 kHz bandwidth, and 80 dB minimum CMR - enabling high-accuracy bidirectional current sensing in automotive power rails and telecom DC/DC converters.
For engineers reviewing the INA193AMDBVREP datasheet, INA193AMDBVREP pinout, INA193AMDBVREP application, or INA193AMDBVREP equivalent, this page provides verified technical context, validated pin functions, real-world use cases in welding equipment and battery chargers, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The INA193AMDBVREP employs a patented dual-amplifier front-end architecture that converts differential shunt voltage into current, then back to voltage via precision resistive networks - eliminating reliance on matched resistor ratios for common-mode rejection. This enables stable operation across –16 V to 80 V common-mode range while powered from a single 2.7–18 V rail.
Its internal topology dynamically selects between A1 (negative VCM) and A2 (positive VCM) amplifiers, ensuring seamless transition near 0 V common-mode. Output stage is optimized for sourcing current up to 30 mA, with 1.5 Ω output impedance and 1 V/μs slew rate - suitable for direct interface with ADCs or comparators without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V - fixed ratio; outputs 20 mV per 1 mV shunt drop, simplifying scaling in 12-bit ADC systems |
| Common-Mode Range | –16 V to 80 V - withstands automotive load-dump transients and negative-rail monitoring without external protection |
| Total Output Error | ±3% max over –55°C to +125°C - includes gain error and offset drift; enables <1% full-scale accuracy at room temperature |
| Bandwidth | 500 kHz - supports fast current-loop control in switching power supplies and motor phase monitoring |
| Supply Current | 700–1300 μA - ultra-low quiescent draw enables always-on monitoring in battery-backed systems |
| Input Offset Voltage | ±0.5 mV RTI max at 25°C - translates to ≤10 mV error at 20× gain, critical for low-current (<1 A) shunt designs |
| CMRR | 80 dB min (–55°C to +125°C) - rejects noise from shared ground paths in high-power industrial inverters |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm height, surface-mount, RoHS-compliant, MSL Level-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output voltage terminal | Single-ended analog output referenced to GND; swings to (V+) – 0.2 V and GND + 3 mV; drives 100 kΩ loads |
| 2 - GND | Analog ground reference | Return path for output stage and internal bias; must connect to low-impedance system ground near shunt |
| 3 - VIN+ | Positive shunt voltage input | High-impedance node (5 kΩ ±30%) tied directly to shunt's high-side; accepts –16 V to 80 V common-mode |
| 4 - V+ | Positive supply rail | Power input for internal circuitry; operates from 2.7 V to 18 V; bypass capacitor required at pin |
| 5 - VIN– | Negative shunt voltage input | High-impedance node (5 kΩ ±30%) tied directly to shunt's low-side; completes differential measurement path |
Key Features
| Feature | Design Value |
|---|---|
| Extended temperature range | –55°C to +125°C operation - qualified for defense/aerospace and under-hood automotive applications |
| Controlled baseline manufacturing | Single assembly/test site and single fabrication site - ensures consistent parametric distribution across production lots |
| Low-error current sensing | ≤3.0% total output error over full temp range - eliminates need for per-unit calibration in cost-sensitive industrial power modules |
| Complete current sense solution | No external gain-setting resistors required - reduces BOM count and layout area vs. discrete op-amp solutions |
| ESD robustness | 4 kV HBM / 1 kV CDM rating - survives handling and board-level ESD events without performance degradation |
Applications
| Welding Equipment | Automotive Power Management |
|---|---|
Use Scenario: Real-time monitoring of high-current DC welding arcs (up to 300 A) with rapid transient response. IC Role / Device Role / Timing Role: Current shunt monitor providing isolated, high-bandwidth analog feedback to PWM controller. Use Value: 500 kHz bandwidth captures arc instability events; –16 V to 80 V common-mode range accommodates floating return paths and ground bounce. |
Use Scenario: Battery pack current monitoring in 12 V/48 V hybrid vehicle subsystems during regenerative braking and start-stop cycles. IC Role / Device Role / Timing Role: Bidirectional current sensor interfacing to microcontroller ADC for state-of-charge calculation. Use Value: Supports both charge and discharge polarity; 20 V/V gain scales 100 mV shunt drop to 2 V output - optimal for 3.3 V ADC full-scale range. |
| Telecom DC/DC Converters | Battery Chargers |
Use Scenario: Input current limiting and fault detection in 48 V intermediate bus converters supplying server PSUs. IC Role / Device Role / Timing Role: High-side current monitor feeding analog current limit comparator with <2 μs settling time. Use Value: 1 V/μs slew rate and 2 μs 1% settling enable fast overcurrent shutdown; 80 V absolute max input handles 48 V bus transients. |
Use Scenario: Precision charge/discharge current measurement in lithium-ion battery charging circuits for portable medical devices. IC Role / Device Role / Timing Role: Low-drift shunt amplifier delivering stable output to safety-critical battery management unit. Use Value: ±0.5 mV offset voltage ensures <0.5% error at 25 A with 10 mΩ shunt; extended product lifecycle guarantees long-term supply continuity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current shunt monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA193AIDBVR | Commercial-grade (–40°C to +125°C); same 20 V/V gain, SOT23-5 package, and electrical specs - but lacks extended temp qualification and controlled baseline. | Not rated for defense/aerospace or automotive under-hood use; unsuitable where MIL-PRF-38535 compliance is required. | Select when cost sensitivity outweighs extended temperature or traceability requirements. |
| INA240A1EDRGT | Higher precision (±0.2% max gain error), wider common-mode (–4 V to 80 V), and integrated 20 V/V gain - but requires 2.7–5.5 V supply only and uses 8-pin VSSOP. | Cannot replace INA193AMDBVREP in 12 V or 18 V supply systems; larger footprint limits space-constrained PCBs. | Choose for higher accuracy in 3.3 V systems where supply voltage and board area permit. |
Compared with INA193AIDBVR, the INA193AMDBVREP adds military-grade temperature range and process control - essential for aerospace deployments. Against INA240A1EDRGT, it trades precision for broader supply voltage compatibility and smaller footprint, making it preferable in legacy 12 V industrial power rails.
Availability
INA193AMDBVREP is available at Aetrix Electronics and suitable for welding equipment, automotive power management, and telecom DC/DC converters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for INA193AMDBVREP 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 precision signal chain and power management ICs.
The INA193A-EP product line delivers radiation-tolerant, extended-temperature current sense amplifiers for mission-critical defense, aerospace, and medical systems - designed to operate reliably where failure is not an option.
FAQ
What is the maximum common-mode voltage the INA193AMDBVREP can handle?
The INA193AMDBVREP supports a common-mode input voltage range of –16 V to +80 V. This allows it to monitor current in high-voltage automotive systems (e.g., 48 V architectures) and survive load-dump transients up to 80 V without external protection components. The specification is guaranteed across the full –55°C to +125°C operating temperature range, and the device remains functional up to +150°C junction temperature.
Does the INA193AMDBVREP require external gain-setting resistors?
No, the INA193AMDBVREP integrates a fixed 20 V/V gain amplifier, eliminating the need for external resistors. Its internal precision resistor network is laser-trimmed during production, ensuring ±2% gain error over temperature. This simplifies design, reduces PCB area, and improves long-term stability compared to discrete op-amp + resistor solutions - all while maintaining the same SOT23-5 footprint as the INA193AMDBVREP.
Can the INA193AMDBVREP be used for bidirectional current sensing?
Yes, the INA193AMDBVREP supports bidirectional current sensing when configured with a centered shunt (e.g., connected between load and ground). Its –16 V to +80 V common-mode range enables monitoring of currents flowing in either direction across the shunt, producing positive or negative output voltage relative to GND depending on polarity. For true bipolar output, an external level-shift circuit or dual-supply configuration is required - but the INA193AMDBVREP itself provides the core differential measurement capability.
What is the supply voltage range for the INA193AMDBVREP?
The INA193AMDBVREP operates from a single supply voltage of 2.7 V to 18 V. This wide range supports integration into both low-voltage portable systems (e.g., 3.3 V battery monitors) and industrial 12 V or 15 V power rails. Quiescent current remains within 700–1300 μA across this range, and output swing is referenced to the applied V+ rail - meaning a 12 V supply enables up to ~11.8 V output swing, critical for maximizing ADC dynamic range.
Is the INA193AMDBVREP pin-compatible with other members of the INA19xA family?
Yes, all SOT23-5 variants in the INA19xA family - including INA193AMDBVREP (20 V/V), INA194AMDBVREP (50 V/V), and INA195AMDBVREP (100 V/V) - share identical pinout, package dimensions, and electrical interface. This enables design reuse and field-upgrade flexibility: swapping the part changes only the gain scaling factor, with no PCB layout modifications required. All maintain the same –16 V to +80 V common-mode range and 500 kHz bandwidth.
INA193AMDBVREP 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:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
INA193AMDBVREP FAQ
1.How can I place an order for INA193AMDBVREP through Aetrix?
Please submit a Request for Quotation (RFQ) for INA193AMDBVREP 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 INA193AMDBVREP reliable?
The price and inventory of INA193AMDBVREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA193AMDBVREP is usually 5 days.
3.What payment methods are accepted for INA193AMDBVREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA193AMDBVREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA193AMDBVREP?
INA193AMDBVREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA193AMDBVREP 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 INA193AMDBVREP?
For technical support, including INA193AMDBVREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA193AMDBVREP requirements.
6.How does Aetrix verify that INA193AMDBVREP is sourced from the original manufacturer or authorized distributors?
All INA193AMDBVREP 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 INA193AMDBVREP meets industry standards.
7.What is the process for return or replacement of INA193AMDBVREP?
All INA193AMDBVREP units undergo pre-shipment inspection (PSI). If there is an issue with INA193AMDBVREP, 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 INA193AMDBVREP part is unused and in its original packaging.
Return procedure for INA193AMDBVREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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