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Texas Instruments INA212AIDCKTG4
- Part No.:
- INA212AIDCKTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA212AIDCKTG4.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,875
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Product details
Overview
INA212AIDCKTG4 from Texas Instruments is a voltage-output, bidirectional, zero-drift current-shunt monitor optimized for high-side or low-side sensing in power management systems. It features 1000 V/V fixed gain, ±35 µV maximum offset voltage (–40°C to +125°C), 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 INA212AIDCKTG4 datasheet, INA212AIDCKTG4 pinout, INA212AIDCKTG4 application, or INA212AIDCKTG4 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 for design flexibility and supply continuity.
Technical Context
The INA212AIDCKTG4 implements a zero-drift chopper-stabilized amplifier architecture to achieve ultra-low input offset and near-zero thermal drift. Its differential input stage rejects common-mode voltages up to 26 V independent of supply voltage, enabling direct sensing on high-voltage rails while powered from low-voltage logic supplies.
It uses internal precision thin-film resistors (RINT = 1 kΩ) to set its fixed 1000 V/V gain, delivering 10 ppm/°C max gain drift and 105 dB min CMRR over temperature. The output buffer supports rail-to-rail swing within 50 mV of V+ and 5 mV of GND at 10-kΩ load, compatible with 12-bit+ ADC interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 1000 V/V - scales 10-mV shunt drop to 10-V output, enabling high-resolution current measurement with minimal I²R loss. |
| Input Offset Voltage (max) | ±35 µV - supports accurate sub-100-mA current sensing using 10-mΩ shunts at full scale. |
| Offset Drift (max) | 0.5 µV/°C - ensures <±0.5 mV total offset error across –40°C to +125°C, critical for automotive and industrial thermal stability. |
| Common-Mode Range | –0.1 V to 26 V - allows direct high-side sensing on 24-V bus rails without level-shifting circuitry. |
| Supply Voltage Range | 2.7 V to 26 V - powers from single Li-ion cell or wide-input DC-DC outputs while maintaining full CM range. |
| Quiescent Current (max) | 100 µA - enables always-on current monitoring in battery-backed systems with negligible standby drain. |
| Bandwidth | 4 kHz - sufficient for DC and slow transient current monitoring in power supply control loops and battery protection. |
| CMRR (min) | 105 dB - rejects noise from noisy 12-V or 24-V rails, preserving signal integrity in telecom and server PSUs. |
Pinout & Package
INA212AIDCKTG4 is packaged in a 6-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts in portable and modular power designs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REF) | Analog reference input | Accepts 0 V to V+ reference voltage; sets output common-mode level-critical for differential ADC interfacing and offset calibration. |
| 2 (GND) | Analog ground | Primary return path for input bias currents and output load; must be connected to clean analog ground plane to maintain CMRR. |
| 3 (V+) | Power supply input | Supplies 2.7 V–26 V; requires ≥0.1 µF ceramic bypass capacitor placed adjacent to pin for stability and noise rejection. |
| 4 (IN+) | Non-inverting input | Connects to supply-side of shunt resistor in high-side configuration or load-side in low-side; matched with IN– for differential sensing. |
| 5 (IN–) | Inverting input | Connects to load-side of shunt in high-side or ground-side in low-side; internal 1-kΩ resistor network defines 1000× gain ratio. |
| 6 (OUT) | Voltage output | Delivers amplified, buffered output (VOUT = (ILOAD × RSHUNT) × 1000 + VREF); drives 10-kΩ loads with rail-to-rail capability. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates 1/f noise and thermal hysteresis, enabling stable 10-mV full-scale shunt measurements over temperature and time. |
| Bidirectional current sensing | Supports both sourcing and sinking current detection via REF pin biasing-essential for battery charge/discharge monitoring. |
| High common-mode rejection | 105 dB minimum CMRR ensures accurate current readout even when shunt sits on noisy 24-V rail with >100-mV ripple. |
| Low-power operation | 100 µA max supply current allows integration into always-on system health monitors without compromising battery life. |
| Wide supply range | 2.7 V–26 V operation permits single-supply use across Li-ion, 5-V USB, 12-V industrial, and 24-V telecom rails. |
| SC70-6 footprint | 2.0 mm × 1.25 mm package reduces board area by >50% vs SOIC-8, supporting ultra-compact DC-DC module designs. |
Applications
| Server PSU Monitoring | USB-C Power Delivery |
|---|---|
|
Use Scenario: Real-time current monitoring on 12-V and 48-V intermediate bus converters in rack-mounted servers. IC Role / Device Role / Timing Role: High-side current-shunt monitor providing isolated feedback to digital PWM controllers. Use Value: Enables ±0.5% current accuracy over –40°C to +85°C, supporting dynamic load-line regulation and fault logging without external calibration. |
Use Scenario: Bidirectional current sensing in USB-C PD sink/source ports to enforce power contract limits and detect cable faults. IC Role / Device Role / Timing Role: Precision shunt amplifier feeding ADC in PD controller for real-time 50-mA resolution current measurement. Use Value: 1000 V/V gain and 10-mV full-scale capability allow use of compact 5-mΩ shunts, minimizing insertion loss and thermal rise in 100-W designs. |
| Notebook Battery Protection | Industrial PLC I/O Modules |
|
Use Scenario: Low-side battery discharge/charge current monitoring in ultrabooks with dual-cell Li-ion packs. IC Role / Device Role / Timing Role: Zero-drift current sense amplifier interfaced to microcontroller ADC for coulomb counting and SOC estimation. Use Value: ±35 µV offset enables accurate 100-mA threshold detection at 10-mΩ shunt, improving battery runtime prediction accuracy by >3%. |
Use Scenario: 24-V loop-powered analog input modules requiring precise field-device current draw verification. IC Role / Device Role / Timing Role: High-common-mode current monitor on 24-V supply rail to validate sensor/actuator compliance before activation. Use Value: –0.1 V to 26 V CM range allows direct connection to 24-V bus without attenuators, reducing BOM count and improving long-term drift stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA212AIDCKR | Same silicon, tape-and-reel packaging (no G4 suffix); identical electrical specs and SC70-6 footprint. | No functional difference-used interchangeably in automated SMT assembly where reel format is required. | Select INA212AIDCKR for volume production; INA212AIDCKTG4 is tube-packaged for prototyping and low-volume validation. |
| INA213AIDCKT | 50 V/V gain (vs. 1000 V/V), ±100 µV max offset, same SC70-6 package and 26-V CM range. | Suited for higher shunt drops (e.g., 100-mV full-scale); trades sensitivity for improved dynamic range and lower noise floor. | Choose INA213AIDCKT when measuring >1-A currents with 100-mΩ shunts-reduces gain error contribution from input bias mismatch. |
Compared with INA212AIDCKTG4, INA212AIDCKR offers identical performance in tape-and-reel form for production lines, while INA213AIDCKT provides lower gain and higher offset for applications prioritizing wide dynamic range over ultra-low-current resolution.
Availability
INA212AIDCKTG4 is available at Aetrix Electronics and suitable for server power supply monitoring, USB-C PD implementation, and notebook battery protection requiring stable component supply and guaranteed long-term manufacturability.
Supply support for INA212AIDCKTG4 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 series was designed specifically for high-accuracy, low-power current sensing in space- and energy-constrained applications-from portable electronics to industrial power systems-leveraging zero-drift architecture for uncompromised DC precision.
FAQ
What is the maximum common-mode voltage supported by the INA212AIDCKTG4?
The INA212AIDCKTG4 supports a common-mode input voltage range of –0.1 V to 26 V across its full operating temperature range (–40°C to +125°C). This allows direct high-side sensing on 24-V industrial buses or low-side monitoring near ground, independent of the 2.7-V to 26-V supply voltage. The device maintains specified accuracy and CMRR throughout this range.
Does the INA212AIDCKTG4 require external gain-setting resistors?
No, the INA212AIDCKTG4 does not require external gain-setting resistors. It integrates precision thin-film resistors to deliver a fixed 1000 V/V gain. This eliminates resistor matching errors, thermal drift contributions, and PCB layout sensitivity-ensuring consistent performance across units and temperatures without user configuration.
Can the INA212AIDCKTG4 measure bidirectional current flow?
Yes, the INA212AIDCKTG4 supports bidirectional current sensing by biasing the REF pin to a mid-supply voltage (e.g., V+/2). When current flows in either direction through the shunt, the output swings symmetrically above and below VREF, enabling full-scale detection of charge and discharge currents in battery management systems.
What is the purpose of the REF pin on the INA212AIDCKTG4?
The REF pin on the INA212AIDCKTG4 sets the output voltage's common-mode level. It accepts any DC voltage from 0 V to V+, allowing flexible interfacing with single-ended or differential ADCs. Grounding REF yields unipolar output; biasing it to V+/2 enables true bidirectional measurement with rail-splitting capability.
Is the INA212AIDCKTG4 compatible with SC70-6 PCB footprints used for other TI current-sense amplifiers?
Yes, the INA212AIDCKTG4 uses the standard TI SC70-6 (DCK) footprint with 0.65-mm pin pitch and 2.00 mm × 1.25 mm body size. It shares mechanical compatibility with INA210–INA215 variants in SC70, enabling footprint reuse across gain options in multi-product platforms-provided routing respects pin function differences (e.g., REF vs GND).
INA212AIDCKTG4 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:
- Discontinued at Digi-Key
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 4 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 28 µA
- Voltage - Input Offset:
- 0.55 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
INA212AIDCKTG4 FAQ
1.How can I place an order for INA212AIDCKTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA212AIDCKTG4 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 INA212AIDCKTG4 reliable?
The price and inventory of INA212AIDCKTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA212AIDCKTG4 is usually 5 days.
3.What payment methods are accepted for INA212AIDCKTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA212AIDCKTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA212AIDCKTG4?
INA212AIDCKTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA212AIDCKTG4 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 INA212AIDCKTG4?
For technical support, including INA212AIDCKTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA212AIDCKTG4 requirements.
6.How does Aetrix verify that INA212AIDCKTG4 is sourced from the original manufacturer or authorized distributors?
All INA212AIDCKTG4 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 INA212AIDCKTG4 meets industry standards.
7.What is the process for return or replacement of INA212AIDCKTG4?
All INA212AIDCKTG4 units undergo pre-shipment inspection (PSI). If there is an issue with INA212AIDCKTG4, 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 INA212AIDCKTG4 part is unused and in its original packaging.
Return procedure for INA212AIDCKTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA212AIDCKTG4 Tags
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