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Texas Instruments INA212CIDCKT
- Part No.:
- INA212CIDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA212CIDCKT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:750
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Product details
Overview
INA212CIDCKT from Texas Instruments is a precision voltage-output current-shunt monitor optimized for bidirectional, high-side or low-side sensing in power management systems. It features 1000 V/V fixed gain, ±35 µV max offset voltage, 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. It enables accurate 10-mV full-scale shunt measurements in battery chargers and telecom power rails.
For engineers reviewing the INA212CIDCKT datasheet, INA212CIDCKT pinout, INA212CIDCKT application, or INA212CIDCKT equivalent, this page delivers verified specifications, SC70-6 package details, zero-drift architecture context, and real-world implementation guidance - all confirmed against TI's SBOS437K production datasheet (November 2023 revision).
Technical Context
The INA212CIDCKT implements a zero-drift chopper-stabilized amplifier topology with matched thin-film resistors, enabling stable DC accuracy over temperature. Its differential input stage rejects common-mode voltages up to 26 V independent of supply, supporting direct sensing on 12-V or 24-V bus rails while powered from 3.3-V or 5-V logic supplies.
It uses an internal precision resistor network (RINT = 1 kΩ) to set its 1000 V/V gain, with REF pin allowing output level shifting from 0 V to VS. Input bias currents remain below 35 µA across –40°C to +125°C, and the device achieves 105 dB min CMRR at DC due to laser-trimmed matching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 1000 V/V - scales 10-mV shunt drop to 10-V output, enabling high-resolution ADC interfacing without external amplification. |
| Offset Voltage (max) | ±35 µV - supports ≤10-mV full-scale shunt sensing with <0.35% error at full scale, critical for low-power battery monitoring. |
| Common-Mode Range | –0.1 V to 26 V - allows direct high-side sensing on 24-V industrial rails or negative-grounded low-side configurations. |
| Supply Voltage Range | 2.7 V to 26 V - powers from single Li-ion cell (3.3 V) or wide-input DC-DC outputs without level-shifting. |
| Quiescent Current (max) | 100 µA - enables always-on current monitoring in energy-sensitive portable devices like notebooks and IoT edge nodes. |
| Bandwidth | 4 kHz - sufficient for DC and slow transient current monitoring (e.g., battery charge/discharge profiling), not RF or fast switching. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive modules, industrial PLCs, and telecom rectifier cabinets. |
Pinout & Package
INA212CIDCKT is packaged in a 6-pin SC70 (DCK) footprint measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts in portable and modular power systems.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Analog power supply | Accepts 2.7–26 V; bypass capacitor required between V+ and GND for stability; powers internal amplifier and reference buffer. |
| GND | Analog ground reference | Return path for supply and signal; must be connected to system power ground with low-impedance trace to minimize noise coupling. |
| IN+ | High-side shunt connection | Connects to supply-side terminal of shunt resistor; tolerates up to 26 V common-mode even when V+ = 3.3 V. |
| IN− | Low-side shunt connection | Connects to load-side terminal of shunt; differential input measures voltage drop across RSHUNT with 1000× gain. |
| OUT | Voltage output | Single-ended analog output referenced to GND; swings within 50 mV of V+ and 5 mV of GND at 10-kΩ load. |
| REF | Output reference level | Adjusts output baseline: 0 V → VOUT = 1000 × VSENSE; VS/2 → VOUT = 1000 × VSENSE + VS/2 for bipolar sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | ±35 µV max offset and 0.5 µV/°C max drift ensure stable 10-mV full-scale accuracy across –40°C to +125°C without recalibration. |
| High CMRR (105 dB min) | Maintains measurement integrity in noisy 24-V industrial environments where common-mode transients exceed 10 V peak. |
| Wide supply range (2.7–26 V) | Eliminates need for auxiliary LDOs when monitoring 12-V or 24-V rails in telecom PSUs or server VRMs powered from 3.3-V control logic. |
| SC70-6 package | 2.00 mm × 1.25 mm footprint reduces board area by >50% vs SOIC-8, enabling dense multi-rail current monitoring on compact power modules. |
| Bidirectional sensing support | REF pin programmability allows output centering at mid-supply, enabling detection of both charge and discharge current through same shunt. |
Applications
| Battery Charger Monitoring | Telecom Power Supply |
|---|---|
Use Scenario: Real-time current tracking during CC/CV charging cycles in USB-PD and GaN-based AC/DC adapters. IC Role / Device Role / Timing Role: High-side current-shunt monitor feeding ADC input of microcontroller; provides 10-bit+ resolution at 10-mV shunt drop. Use Value: Enables precise charge termination and thermal derating without increasing shunt power loss beyond 10 mW at 1-A load. |
Use Scenario: Input/output current supervision in 48-V telecom rectifiers with hot-swap and OCP protection. IC Role / Device Role / Timing Role: Low-drift analog front-end for digital power controller; senses bidirectional current on primary and secondary sides. Use Value: Maintains <0.5% gain error over temperature, ensuring reliable fault detection across –5°C to +70°C base station operating range. |
| Notebook System Power | Industrial PLC I/O Module |
Use Scenario: Per-rail current monitoring (CPU, GPU, SSD) in ultrabook power delivery networks with multiple buck converters. IC Role / Device Role / Timing Role: Voltage-output current sensor interfaced to integrated PMIC ADC; operates from 3.3-V supply while sensing 12-V rail. Use Value: 100 µA quiescent current avoids measurable impact on standby battery life; SC70 size fits tight routing near VRM outputs. |
Use Scenario: Overcurrent protection and load diagnostics in 24-V DC I/O modules with isolated analog inputs. IC Role / Device Role / Timing Role: High-side sensing element before isolation barrier; feeds isolated sigma-delta ADC via precision op-amp buffer. Use Value: –0.1 V to 26 V common-mode range accommodates reverse-polarity protection diodes and transient clamping circuits without attenuation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA213AIDCKT | 50 V/V gain, ±100 µV max offset, 80-kHz bandwidth - lower gain, higher BW, looser offset spec. | Better suited for high-current, high-shunt-drop (>60 mV) applications where speed matters more than sub-10-mV resolution. | Select when measuring ≥5-A loads with 10-mΩ shunts and requiring faster response than INA212CIDCKT's 4-kHz bandwidth. |
| MAX40056AUT+T | 100 V/V gain, ±150 µV max offset, 450-kHz bandwidth, integrated 2.5-V reference - higher gain tolerance, much higher speed, different reference architecture. | Targeted at motor phase current sensing and fast-switching SMPS where slew rate and bandwidth dominate accuracy requirements. | Choose for designs needing >100-kHz closed-loop current feedback; avoid if 10-mV full-scale resolution and ultra-low drift are mandatory. |
Compared with INA213AIDCKT and MAX40056AUT+T, the INA212CIDCKT uniquely balances ultra-low offset (±35 µV), 1000× gain, and SC70 packaging - making it optimal for precision low-current monitoring where board space and DC accuracy outweigh raw bandwidth needs.
Availability
INA212CIDCKT is available at Aetrix Electronics and suitable for battery charger monitoring, telecom power supply supervision, notebook system power, and industrial PLC I/O modules requiring stable component supply and long-term manufacturability.
Supply support for INA212CIDCKT 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, wide common-mode current sensing in space- and power-constrained applications - targeting battery management, telecom infrastructure, and industrial automation systems.
FAQ
What is the maximum common-mode voltage the INA212CIDCKT can measure?
The INA212CIDCKT supports a common-mode input voltage range of –0.1 V to 26 V, verified per TI's SBOS437K datasheet Section 5.5. This allows direct high-side sensing on 24-V industrial buses or negative-grounded low-side configurations without external level-shifting circuitry. The device maintains specified accuracy across this full range when powered from 2.7 V to 26 V.
Does the INA212CIDCKT require external resistors to set gain?
No. The INA212CIDCKT has a factory-laser-trimmed fixed gain of 1000 V/V, implemented using internal matched thin-film resistors (RINT = 1 kΩ). No external gain-setting components are needed - simplifying layout, reducing BOM count, and eliminating resistor tolerance errors that would degrade accuracy in discrete solutions.
Can the INA212CIDCKT be used for bidirectional current sensing?
Yes. By applying a reference voltage (e.g., VS/2) to the REF pin, the INA212CIDCKT output centers at mid-supply. A positive shunt voltage produces an output above REF; a negative shunt voltage produces an output below REF - enabling detection of both charge and discharge current through the same shunt resistor in battery applications.
What is the typical bandwidth and slew rate of the INA212CIDCKT?
The INA212CIDCKT has a small-signal bandwidth of 4 kHz (at CLOAD = 10 pF) and a slew rate of 0.4 V/µs, per Section 5.5 of the SBOS437K datasheet. These values support DC and slowly varying current measurements - such as battery charge profiling or thermal derating - but are insufficient for PWM switching node current sampling.
Is the SC70-6 package of the INA212CIDCKT RoHS-compliant and lead-free?
Yes. The INA212CIDCKT in SC70-6 (DCK) package is manufactured per TI's standard RoHS-compliant, lead-free process. The device carries the "C" grade suffix (indicating –40°C to +125°C operation) and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), allowing standard SMT assembly without baking.
INA212CIDCKT 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:
- Obsolete
- 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
INA212CIDCKT FAQ
1.How can I place an order for INA212CIDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA212CIDCKT 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 INA212CIDCKT reliable?
The price and inventory of INA212CIDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA212CIDCKT is usually 5 days.
3.What payment methods are accepted for INA212CIDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA212CIDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA212CIDCKT?
INA212CIDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA212CIDCKT 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 INA212CIDCKT?
For technical support, including INA212CIDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA212CIDCKT requirements.
6.How does Aetrix verify that INA212CIDCKT is sourced from the original manufacturer or authorized distributors?
All INA212CIDCKT 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 INA212CIDCKT meets industry standards.
7.What is the process for return or replacement of INA212CIDCKT?
All INA212CIDCKT units undergo pre-shipment inspection (PSI). If there is an issue with INA212CIDCKT, 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 INA212CIDCKT part is unused and in its original packaging.
Return procedure for INA212CIDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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