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Texas Instruments INA215AIDCKT
- Part No.:
- INA215AIDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA215AIDCKT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:419
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Product details
Overview
INA215AIDCKT from Texas Instruments is a zero-drift, voltage-output current-shunt monitor optimized for bidirectional high- or low-side sensing in power management systems. It features 75 V/V fixed gain, ±60 µV max input offset voltage (RTI), 0.5 µV/°C max offset drift, –0.1 V to 26 V common-mode input range, and operates from 2.7 V to 26 V supply with ≤100 µA quiescent current. It enables precise 10-mV full-scale shunt measurements in battery chargers and telecom power rails.
For engineers reviewing the INA215AIDCKT datasheet, INA215AIDCKT pinout, INA215AIDCKT application, or INA215AIDCKT equivalent, this page delivers verified specifications, SC70-6 package layout, real-world use cases in notebook power monitoring and USB-C PD systems, and two validated alternative parts with documented functional and gain-related trade-offs.
Technical Context
The INA215AIDCKT implements a precision zero-drift chopper-stabilized amplifier architecture with matched internal resistor networks (RINT = 13.3 kΩ) enabling high CMRR (105–140 dB) and low gain error (±1% over temperature for Versions A/B). Its differential input stage rejects common-mode voltages up to 26 V independent of supply, supporting direct sensing on 12-V or 24-V rails while powered from 3.3-V or 5-V logic supplies.
It delivers 40 kHz bandwidth and 0.4 V/µs slew rate into 10-kΩ loads, with output swing within 50 mV of V+ and 5 mV of GND. The REF pin supports ratiometric or absolute reference configurations, and its 25-µA matched input bias current (≥3 V VCM) ensures minimal shunt measurement error under active operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 75 V/V - sets output scaling for 10-mV shunt drop → 750-mV full-scale signal, minimizing I²R loss. |
| Input Offset Voltage (max) | ±60 µV RTI - enables accurate sub-100-mA current detection with 100-mΩ shunt at 10-mV FS. |
| Offset Drift (max) | 0.5 µV/°C - ensures <±0.5 mV total offset shift across –40°C to +125°C, critical for thermal stability. |
| Common-Mode Range | –0.1 V to 26 V - supports high-side sensing on 24-V industrial rails or low-side sensing near ground. |
| Supply Voltage Range | 2.7 V to 26 V - allows single-supply operation from Li-ion battery (3.0 V) up to 24-V system rails. |
| Quiescent Current (max) | 100 µA - enables always-on current monitoring in battery-powered devices without significant drain. |
| Bandwidth | 40 kHz - sufficient for DC–10 kHz load transients in power converters and fast-charging control loops. |
Pinout & Package
INA215AIDCKT is packaged in a 6-pin SC70 (DCK) with 2.00 mm × 1.25 mm body size and 0.65-mm lead pitch. The package supports reflow soldering per JEDEC J-STD-020 and is rated for operation from –40°C to +125°C.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Analog power supply | Accepts 2.7–26 V; bypass capacitor required between V+ and GND for stability. |
| GND | Analog ground reference | Must be connected to system power ground; forms return path for quiescent current and output load. |
| IN+ | Non-inverting input | Connects to supply-side of shunt; high-impedance node (25 µA bias current ≥3 V VCM). |
| IN− | Inverting input | Connects to load-side of shunt; matched bias current minimizes common-mode error. |
| REF | Reference input | Sets output common-mode level; 0 V to V+ range; requires low-impedance source or buffer if resistive divider used. |
| OUT | Voltage output | Delivers (ISHUNT × RSHUNT) × 75 + VREF; drives ≥10-kΩ loads with rail-to-rail swing capability. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates 1/f noise and long-term drift, enabling stable 10-mV full-scale shunt measurements over temperature and time. |
| High common-mode rejection | 105–140 dB CMRR ensures accurate current sensing despite noisy 24-V bus transients or ground bounce. |
| Low quiescent current | ≤100 µA operation allows integration into always-on battery fuel gauging or standby power monitors. |
| Wide supply range | 2.7–26 V operation supports direct interface with Li-ion, 5-V, 12-V, and 24-V systems without LDO overhead. |
| SC70-6 footprint | Compact 2.0 × 1.25 mm package enables high-density placement near shunts in space-constrained notebooks and USB-C adapters. |
Applications
| Power Supply Monitoring | USB-C Power Delivery |
|---|---|
|
Use Scenario: Real-time current monitoring in 12-V DC-DC converter outputs for overcurrent protection and efficiency optimization. IC Role / Device Role / Timing Role: High-side current-shunt monitor measuring load current via 10-mΩ shunt, feeding analog input of microcontroller ADC. Use Value: Enables 1% full-scale accuracy down to 13 mA (10-mV/0.75 Ω) with no calibration, reducing BOM cost vs. higher-gain alternatives requiring larger shunts. |
Use Scenario: Bidirectional current sensing in USB-C PD sink applications to detect charge/discharge direction and limit inrush. IC Role / Device Role / Timing Role: Low-side shunt monitor with REF tied to GND, delivering polarity-sensitive output to PD controller's analog sense input. Use Value: 75 V/V gain provides optimal dynamic range for ±3-A PD profiles (±225 mV shunt drop), avoiding ADC saturation during peak pulses. |
| Notebook Battery Management | Telecom DC Power Distribution |
|
Use Scenario: Precision coulomb counting in laptop battery packs using series shunt between battery and system load. IC Role / Device Role / Timing Role: Low-side current sensor with V+ supplied from regulated 3.3-V rail, OUT interfaced to fuel gauge IC. Use Value: 0.5 µV/°C offset drift ensures <±0.5 mV error over full thermal range, translating to <±0.5% SoC error in multi-hour discharge cycles. |
Use Scenario: Input current supervision on 48-V telecom rectifier outputs feeding distributed DC distribution boards. IC Role / Device Role / Timing Role: High-side monitor with 24-V common-mode voltage, REF biased to 1.25 V for centered 0–2.5 V ADC range. Use Value: 26-V common-mode tolerance allows direct connection to 48-V rail via resistive divider, eliminating need for isolated amplifiers or level-shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA214AIDCKT | 100 V/V gain, ±100 µV max offset, same SC70-6 package and 26-V CM range. | Better resolution for lower-current rails (e.g., 5-V logic supplies); higher gain increases sensitivity but reduces shunt voltage headroom. | Select when 10-mV shunt drop must yield ≥1-V output for noisy ADC environments; verify REF stability with higher gain. |
| INA226AIDGSR | I²C digital output, 20-bit delta-sigma ADC, 36-V max VCM, 10-ms conversion time, SOIC-10 package. | Replaces analog signal chain with integrated digital reporting; requires MCU firmware support and I²C routing. | Choose for systems needing calibrated current/voltage/power telemetry without external ADC; not suitable for closed-loop analog feedback. |
Compared with INA215AIDCKT, INA214AIDCKT offers higher gain for improved SNR in low-current sensing but demands tighter shunt tolerance; INA226AIDGSR eliminates analog signal conditioning but adds firmware dependency and latency, making it unsuitable for real-time protection.
Availability
INA215AIDCKT is available at Aetrix Electronics and suitable for notebook power management, USB-C PD adapter design, and telecom DC distribution systems requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for INA215AIDCKT 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 INA21x product line was designed specifically for high-accuracy, low-power current sensing in space- and energy-constrained applications including portable computing, communications infrastructure, and industrial power systems.
FAQ
What is the maximum common-mode voltage supported by the INA215AIDCKT?
The INA215AIDCKT 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 A, B, and C per the official TI SBOS437K datasheet. Operation beyond 26 V requires external transient protection circuitry such as Zener clamps, as detailed in Section 6.4.4 of the datasheet. The device maintains specified accuracy only within this 26-V limit.
Does the INA215AIDCKT require an external reference voltage?
No, the INA215AIDCKT does not require an external reference voltage to function. Its REF pin can be tied directly to GND for unipolar output (0 V to VOUT), to V+/2 for centered output, or to any stable voltage between 0 V and V+. When REF = GND, the output equation simplifies to VOUT = (ISHUNT × RSHUNT) × 75. The device operates correctly with REF left floating only if buffered-TI recommends explicit connection for predictable performance.
What is the typical bandwidth and slew rate of the INA215AIDCKT?
The INA215AIDCKT has a typical small-signal bandwidth of 40 kHz (measured with 10-pF load) and a slew rate of 0.4 V/µs. These values enable accurate response to load transients up to ~10 kHz in power supply monitoring applications. Bandwidth decreases with increasing capacitive load; for stable operation with >100-pF capacitance, external compensation or buffer stages are recommended per Section 9 of the datasheet.
Can the INA215AIDCKT be used in bidirectional current sensing applications?
Yes, the INA215AIDCKT supports true bidirectional current sensing. When the shunt voltage polarity reverses (i.e., current flows opposite its nominal direction), the output voltage crosses the REF voltage level-enabling direction detection. For example, with REF = 1.25 V and VS = 5 V, output swings from ~0.5 V (–I) to ~2.0 V (+I), providing unambiguous sign information to an ADC or comparator without additional circuitry.
What package options are available for the INA215AIDCKT?
The INA215AIDCKT is exclusively offered in the 6-pin SC70 (DCK) package with nominal dimensions of 2.00 mm × 1.25 mm. While the broader INA21x family includes UQFN-10 variants (e.g., INA215AIRSAT), the "AIDCKT" suffix explicitly denotes the SC70-6 variant. No SOIC, MSOP, or other packages are orderable for this specific part number per TI's official orderable addendum.
INA215AIDCKT 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:
- 40 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 28 µA
- Voltage - Input Offset:
- 1 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
INA215AIDCKT FAQ
1.How can I place an order for INA215AIDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA215AIDCKT 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 INA215AIDCKT reliable?
The price and inventory of INA215AIDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA215AIDCKT is usually 5 days.
3.What payment methods are accepted for INA215AIDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA215AIDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA215AIDCKT?
INA215AIDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA215AIDCKT 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 INA215AIDCKT?
For technical support, including INA215AIDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA215AIDCKT requirements.
6.How does Aetrix verify that INA215AIDCKT is sourced from the original manufacturer or authorized distributors?
All INA215AIDCKT 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 INA215AIDCKT meets industry standards.
7.What is the process for return or replacement of INA215AIDCKT?
All INA215AIDCKT units undergo pre-shipment inspection (PSI). If there is an issue with INA215AIDCKT, 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 INA215AIDCKT part is unused and in its original packaging.
Return procedure for INA215AIDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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