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Texas Instruments INA213AIDCKT
- Part No.:
- INA213AIDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA213AIDCKT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,408
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Product details
Overview
INA213AIDCKT from Texas Instruments is a voltage-output, bidirectional current-shunt monitor with zero-drift architecture, designed for high-accuracy low- or high-side current sensing in power rails up to 26 V. It features a fixed gain of 50 V/V, ±100 µV maximum input offset voltage (RTI), 80 kHz bandwidth, 100 µA max quiescent current, and operates from 2.7 V to 26 V supply - enabling precise 10-mV full-scale shunt measurements in battery chargers and telecom power management.
For engineers reviewing the INA213AIDCKT datasheet, INA213AIDCKT pinout, INA213AIDCKT application, or INA213AIDCKT equivalent, this page delivers verified specifications, SC70-6 package layout, real-world use cases in notebook power monitoring and USB-C PD systems, and validated alternative options with documented gain and offset trade-offs.
Technical Context
The INA213AIDCKT implements a precision zero-drift chopper-stabilized amplifier topology optimized for differential voltage measurement across shunt resistors under wide common-mode conditions (–0.1 V to 26 V). Its internal matched resistor network (RINT = 20 kΩ) sets the 50 V/V gain and enables stable operation without external gain-setting components.
It supports both unidirectional and bidirectional current sensing via configurable REF pin biasing (0 V to VS), delivers rail-to-rail output swing within 50 mV of VS and 5 mV of GND at 10-kΩ load, and maintains 100 dB minimum CMRR over temperature - critical for rejecting noise in noisy DC/DC converter feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V - fixed ratio; converts 20-mV shunt drop to 1-V output, simplifying ADC interface design |
| Input Offset Voltage (max) | ±100 µV RTI - enables accurate 10-mV full-scale current sensing with <0.5% error at low loads |
| Bandwidth | 80 kHz - supports fast transient detection in overcurrent protection circuits up to 100 kHz switching converters |
| Common-Mode Range | –0.1 V to 26 V - allows direct high-side sensing on 24-V industrial rails without level-shifting circuitry |
| Supply Voltage Range | 2.7 V to 26 V - powers from single Li-ion cell or 24-V bus, eliminating need for auxiliary LDO |
| Quiescent Current | 100 µA max - suitable for always-on battery monitoring with <1 µW standby power consumption |
| Operating Temperature | –40°C to +125°C - qualified for automotive cabin and industrial power module environments |
Pinout & Package
INA213AIDCKT is packaged in a 6-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts in portable electronics and modular power supplies.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Analog power supply | Accepts 2.7–26 V; powers internal amplifier and reference buffer; bypass capacitor required |
| GND | Analog ground | Return path for supply and signal; must be star-connected to shunt ground to avoid measurement error |
| IN+ | Differential input (+) | Connects to supply side of shunt; high-impedance node (20 kΩ to REF); sensitive to layout parasitics |
| IN− | Differential input (−) | Connects to load side of shunt; matched impedance to IN+ ensures CMRR integrity |
| REF | Reference input | Bias point for output offset; set to 0 V for unidirectional sensing or mid-supply for bidirectional operation |
| OUT | Voltage output | Low-impedance buffered output; drives 10-kΩ loads directly; swing limited to (V+) – 50 mV / GND + 5 mV |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | 0.5 µV/°C max offset drift - maintains calibration stability over industrial temperature range without recalibration |
| High CMRR | 100 dB min (INA213-specific) - rejects ripple and noise from adjacent 24-V DC/DC converters |
| No external gain components | Fixed 50 V/V - eliminates resistor tolerance errors and board area for gain-setting network |
| Low quiescent current | 100 µA max - extends battery life in portable equipment with continuous current monitoring |
| Wide supply range | 2.7–26 V - interoperable with single-cell, dual-cell, and 24-V industrial systems without voltage translation |
Applications
| Power Supply Monitoring | USB-C Power Delivery |
|---|---|
Use Scenario: Real-time current tracking in 12-V telecom DC/DC modules to detect fan failure or short-circuit events. IC Role / Device Role / Timing Role: High-side current shunt monitor feeding analog input of system microcontroller ADC. Use Value: 80 kHz bandwidth captures 50-A/s di/dt transients; ±100 µV offset ensures <1% error at 1-A load with 10-mΩ shunt. |
Use Scenario: Bidirectional current measurement in USB-C PD sink port to enforce 3-A/5-A contract limits and detect reverse charging. IC Role / Device Role / Timing Role: Low-side current sense amplifier with REF biased at 1.65 V for symmetric ±1.5-A range. Use Value: 50 V/V gain scales ±30-mV shunt drop to ±1.5-V output compatible with 3.3-V SAR ADC; 100 µA IQ minimizes standby drain. |
| Notebook Battery Management | Industrial Motor Drive Protection |
Use Scenario: Coulomb counting and charge/discharge current monitoring in lithium-polymer battery packs. IC Role / Device Role / Timing Role: Precision low-side current sensor interfaced to fuel gauge IC via analog output. Use Value: ±100 µV offset enables accurate 10-mA resolution at 10-A full scale; –40°C to +125°C rating covers battery thermal extremes. |
Use Scenario: Overcurrent detection in 24-V BLDC motor phase-leg drivers during stall or short-circuit conditions. IC Role / Device Role / Timing Role: High-side current monitor feeding comparator input for sub-µs fault response. Use Value: 26-V common-mode range allows direct sensing on high-side FET source; 80 kHz BW supports 20-kHz PWM edge 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 |
|---|---|---|---|
| INA213AIDRGT | Same 50 V/V gain and SC70-6 package, but tape-and-reel (DRGT) vs cut-tape (DCKT); identical electrical specs | No functional difference; selected for automated SMT assembly volume procurement | Choose INA213AIDRGT for production runs >5k units requiring reel-fed placement |
| INA214AIDCKT | 100 V/V gain (2× higher), same SC70-6 package, ±60 µV max offset, 30 kHz bandwidth | Better offset performance but halved bandwidth; suited for slower, higher-precision measurements (e.g., battery SOC) | Select INA214AIDCKT when 20-mV shunt drop requires >2-V output and 30 kHz BW suffices |
Compared with INA213AIDCKT, INA213AIDRGT offers identical performance in a production-optimized packaging format, while INA214AIDCKT trades bandwidth for improved offset and gain accuracy - making it preferable for static or low-dynamic-range current monitoring where higher output voltage swing is needed.
Availability
INA213AIDCKT is available at Aetrix Electronics and suitable for notebook power management, USB-C PD systems, and industrial 24-V motor control applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for INA213AIDCKT 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 solutions.
The INA21x series was developed specifically for high-accuracy, low-power current sensing in space- and energy-constrained systems - targeting battery-powered devices, telecom infrastructure, and industrial power conversion where shunt-based measurement dominates.
FAQ
What is the maximum common-mode voltage supported by the INA213AIDCKT?
The INA213AIDCKT supports a common-mode input voltage range of –0.1 V to 26 V across its IN+ and IN– pins. This specification applies to Versions B and C per the official TI datasheet SBOS437K, enabling direct high-side sensing on 24-V industrial rails without external level-shifting circuitry. The device maintains specified accuracy and CMRR within this range at temperatures from –40°C to +125°C.
Does the INA213AIDCKT require external resistors to set gain?
No, the INA213AIDCKT does not require external resistors to set gain. It integrates a precision 20-kΩ internal resistor network that fixes the gain at 50 V/V. This eliminates gain-setting resistor tolerance errors, reduces PCB area, and improves temperature stability compared to discrete op-amp-based current-sense solutions. The gain is factory-trimmed and remains stable over temperature and time.
Can the INA213AIDCKT measure bidirectional current flow?
Yes, the INA213AIDCKT supports bidirectional current measurement by biasing the REF pin to a midpoint voltage (e.g., VS/2). When the shunt voltage polarity reverses, the output swings above or below the REF voltage accordingly. With a 3.3-V supply and REF = 1.65 V, the device delivers ±1.5-V output for ±30-mV shunt drops - ideal for USB-C PD sink/source detection and H-bridge motor current monitoring.
What is the typical bandwidth and slew rate of the INA213AIDCKT?
The INA213AIDCKT has a typical small-signal bandwidth of 80 kHz (measured with 10-pF load) and a slew rate of 0.4 V/µs. These values enable accurate capture of fast current transients in switching power supplies and motor drives. Bandwidth is gain-dependent and confirmed in TI's SBOS437K datasheet Figure 5-7; slew rate ensures distortion-free step response for 10-mV input steps as shown in Figure 5-17.
How does the REF pin function in the INA213AIDCKT?
The REF pin in the INA213AIDCKT sets the output voltage offset baseline. When grounded, it configures unidirectional sensing (0–VOUT); when biased at VS/2, it enables bidirectional operation (±VOUT). The pin presents high impedance but is sensitive to external impedance - TI recommends direct connection to a low-impedance reference or buffering via op-amp if sourced from a resistive divider to preserve CMRR.
INA213AIDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 80 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 28 µA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 65µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 26 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
INA213AIDCKT FAQ
1.How can I place an order for INA213AIDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA213AIDCKT 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 INA213AIDCKT reliable?
The price and inventory of INA213AIDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA213AIDCKT is usually 5 days.
3.What payment methods are accepted for INA213AIDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA213AIDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA213AIDCKT?
INA213AIDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA213AIDCKT 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 INA213AIDCKT?
For technical support, including INA213AIDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA213AIDCKT requirements.
6.How does Aetrix verify that INA213AIDCKT is sourced from the original manufacturer or authorized distributors?
All INA213AIDCKT 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 INA213AIDCKT meets industry standards.
7.What is the process for return or replacement of INA213AIDCKT?
All INA213AIDCKT units undergo pre-shipment inspection (PSI). If there is an issue with INA213AIDCKT, 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 INA213AIDCKT part is unused and in its original packaging.
Return procedure for INA213AIDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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