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Texas Instruments INA213BIDCKT
- Part No.:
- INA213BIDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA213BIDCKT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:11,646
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Product details
Overview
INA213BIDCKT 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 maximum 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 INA213BIDCKT datasheet, INA213BIDCKT pinout, INA213BIDCKT application, or INA213BIDCKT equivalent, this page delivers verified technical context, package-specific pin functions, real-world application mappings, and validated alternative options - all grounded in TI's SBOS437K production data sheet and orderable part documentation.
Technical Context
The INA213BIDCKT implements a zero-drift chopper-stabilized amplifier topology to achieve ±100 µV max offset and 0.5 µV/°C max drift over –40°C to +125°C, supporting accurate low-voltage shunt sensing without calibration. Its differential input stage accepts common-mode voltages from –0.1 V to 26 V independent of supply, enabling direct measurement on hot-swap or 24-V industrial rails.
With a fixed 50 V/V gain and 100-kΩ internal input resistance (RINT = 20 kΩ), it delivers rail-to-rail output swing (to within 50 mV of V+ and 5 mV of GND) into 10-kΩ loads, while maintaining 100 dB minimum CMRR and 25 nV/√Hz input-referred noise density - optimized for ADC interfacing in compact, low-power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V - scales shunt voltage linearly for direct ADC input scaling; enables 60-mV full-scale shunt drop at 3.3-V supply. |
| Input Offset Voltage (max) | ±100 µV RTI - supports ≤10-mV full-scale shunt sensing with <1% error at low currents. |
| Common-Mode Range | –0.1 V to 26 V - allows high-side sensing on 24-V bus without level-shifting or external biasing. |
| Bandwidth | 80 kHz - sufficient for transient detection in DC-DC converter current limiting and battery charge control loops. |
| Quiescent Current | 100 µA max - enables always-on monitoring in energy-sensitive portable and IoT power systems. |
| Supply Voltage Range | 2.7 V to 26 V - powers directly from same rail being monitored or from auxiliary LDO, eliminating extra regulators. |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood, industrial motor drives, and telecom rectifier modules. |
Pinout & Package
INA213BIDCKT 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/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Analog power supply | Accepts 2.7–26 V; powers internal amplifier and reference buffer; bypass capacitor required at pin. |
| GND | Analog ground | Return path for supply and signal; must be low-impedance connection to minimize noise coupling. |
| IN+ | Differential input (+) | Connects to supply side of shunt resistor; high-impedance node (1 MΩ to REF/OUT); requires short trace routing. |
| IN− | Differential input (−) | Connects to load side of shunt resistor; matched to IN+ for CMRR; same routing constraints apply. |
| REF | Reference voltage input | Sets output common-mode level (0 V to V+); buffered internally; resistive dividers require op-amp buffering. |
| OUT | Analog voltage output | Single-ended, rail-to-rail output (VOUT = (ISHUNT × RSHUNT) × 50 + VREF); drives 10-kΩ loads directly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional current sensing | Supports both sourcing and sinking current flow through shunt - essential for battery charge/discharge monitoring. |
| Zero-drift architecture | Enables stable 10-mV full-scale shunt operation with <0.1% offset drift over temperature - eliminates recalibration. |
| High CMRR (100 dB min) | Maintains accuracy despite large common-mode transients (e.g., switching noise on 24-V bus), critical for clean ADC readings. |
| Low quiescent current (100 µA) | Permits continuous current monitoring in standby modes of battery-powered devices without significant runtime penalty. |
| SC70 footprint compatibility | Shares land pattern with other INA21x variants - simplifies BOM consolidation and design reuse across gain options. |
Applications
| Power Supply Monitoring | Battery Charge Management |
|---|---|
|
Use Scenario: Real-time current tracking in 12-V/24-V DC-DC converters for server PSUs and industrial PLCs. IC Role / Device Role / Timing Role: High-side current-shunt monitor providing analog feedback to PWM controller or microcontroller ADC. Use Value: Enables overcurrent protection response within 12.5 µs (1/80 kHz), prevents MOSFET failure during short-circuit events. |
Use Scenario: Bidirectional current measurement in USB-C PD and Li-ion fast-charging circuits. IC Role / Device Role / Timing Role: Precision shunt amplifier feeding ADC in charging IC or host MCU for Coulomb counting. Use Value: ±100 µV offset ensures <1% error at 1-A charge current with 10-mΩ shunt - improves state-of-charge accuracy by >2%. |
| Telecom Rectifier Modules | Notebook System Power Rails |
|
Use Scenario: Input/output current monitoring in -48 V telecom rectifiers with hot-swap capability. IC Role / Device Role / Timing Role: High-common-mode (>26 V transient-tolerant) current sensor interfaced to isolated digital isolator. Use Value: 26-V CM range allows direct sensing without external attenuators; reduces component count and board area by 30%. |
Use Scenario: GPU core voltage rail current monitoring in thin-and-light notebooks. IC Role / Device Role / Timing Role: Low-profile SC70 current monitor placed adjacent to VRM output shunt for thermal-aware throttling. Use Value: 2.00 mm × 1.25 mm SC70 package fits within tight VRM layout constraints while delivering 80 kHz bandwidth for dynamic load step response. |
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 | Same SC70 package and pinout; ±35 µV max offset (vs. ±100 µV for INA213BIDCKT); tighter gain error (±0.5% vs. ±1%) | Better suited for ultra-precision applications requiring <0.1% total error at room temperature | Select INA213AIDCKT when offset-critical calibration-free operation is required; higher cost and lower availability than B-grade. |
| INA214BIDCKT | Same grade (B), same package; 100 V/V gain (2× INA213BIDCKT); identical offset, bandwidth (30 kHz), and supply specs | Preferred where higher gain enables use of larger-value, lower-power shunts (e.g., 50 mΩ instead of 25 mΩ) | Choose INA214BIDCKT to reduce shunt I²R loss by 50% at same current; trade-off is reduced bandwidth and dynamic range. |
Compared with INA213AIDCKT and INA214BIDCKT, INA213BIDCKT offers the optimal balance of cost, precision, and bandwidth for mid-tier power management - delivering 80 kHz response and ±1% system-level current accuracy without premium-grade pricing or bandwidth sacrifice.
Availability
INA213BIDCKT is available at Aetrix Electronics and suitable for battery chargers, telecom rectifiers, notebook power rails, and industrial DC-DC converters requiring stable component supply across long production lifecycles.
Supply support for INA213BIDCKT 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 amplifiers and power management ICs.
The INA21x product line was engineered specifically for high-accuracy, low-power current sensing in space- and energy-constrained systems - targeting applications from portable electronics to industrial power supplies.
FAQ
What is the maximum common-mode voltage supported by the INA213BIDCKT?
The INA213BIDCKT 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 specification applies to Version B devices per TI's SBOS437K datasheet, enabling reliable high-side sensing on 24-V industrial buses without external level-shifting circuitry. The device maintains specified performance up to 26 V regardless of supply voltage, which can be as low as 2.7 V.
Does the INA213BIDCKT support bidirectional current measurement?
Yes, the INA213BIDCKT supports true bidirectional current sensing. Its zero-drift architecture and rail-to-rail output stage allow accurate measurement of current flowing in either direction through the shunt resistor - with output voltage centered at VREF. When VREF is set to mid-supply (e.g., 1.65 V on 3.3-V rail), positive current yields VOUT > VREF, and negative current yields VOUT < VREF. This capability is explicitly confirmed in TI's INA21x family description and functional block diagram.
What is the typical bandwidth and slew rate of the INA213BIDCKT?
The INA213BIDCKT 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 are specified in Section 5.5 of the SBOS437K datasheet and enable accurate capture of fast current transients - such as those occurring during DC-DC converter load steps or battery short-circuit events - without significant phase lag or distortion in the analog output signal.
Can the INA213BIDCKT operate from a 3.3-V supply while monitoring a 24-V rail?
Yes, the INA213BIDCKT can operate from a 3.3-V supply while accurately monitoring a 24-V common-mode rail. Its architecture decouples supply voltage from common-mode input range: the device draws power only from V+, but accepts inputs from –0.1 V to 26 V independently. This is confirmed in the "Recommended Operating Conditions" table and "Description" section of the official datasheet - making it ideal for isolated or auxiliary-supplied sensing in multi-rail systems.
What package type and dimensions does the INA213BIDCKT use?
The INA213BIDCKT uses the SC70-6 (DCK) package, with nominal body dimensions of 2.00 mm × 1.25 mm and 0.95 mm height. This information is documented in TI's "Device Information" table and "Mechanical, Packaging, and Orderable Information" section. The DCK package is RoHS-compliant, halogen-free, and compatible with standard reflow soldering profiles - supporting high-density PCB assembly in portable and modular power applications.
INA213BIDCKT 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:
- 14 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
INA213BIDCKT FAQ
1.How can I place an order for INA213BIDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA213BIDCKT 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 INA213BIDCKT reliable?
The price and inventory of INA213BIDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA213BIDCKT is usually 5 days.
3.What payment methods are accepted for INA213BIDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA213BIDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA213BIDCKT?
INA213BIDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA213BIDCKT 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 INA213BIDCKT?
For technical support, including INA213BIDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA213BIDCKT requirements.
6.How does Aetrix verify that INA213BIDCKT is sourced from the original manufacturer or authorized distributors?
All INA213BIDCKT 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 INA213BIDCKT meets industry standards.
7.What is the process for return or replacement of INA213BIDCKT?
All INA213BIDCKT units undergo pre-shipment inspection (PSI). If there is an issue with INA213BIDCKT, 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 INA213BIDCKT part is unused and in its original packaging.
Return procedure for INA213BIDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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