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Texas Instruments INA215BIDCKR
- Part No.:
- INA215BIDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA215BIDCKR.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:13,886
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Product details
Overview
INA215BIDCKR 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 75 V/V, ±60 µV maximum input offset voltage (RTI), 0.5 µV/°C max offset drift, 10 ppm/°C max gain drift, and operates from 2.7 V to 26 V supply with ≤100 µA quiescent current - enabling 10-mV full-scale shunt measurements in notebook battery management and telecom power supplies.
For engineers reviewing the INA215BIDCKR datasheet, INA215BIDCKR pinout, INA215BIDCKR application, or INA215BIDCKR equivalent, this device supports precision current monitoring in space-constrained, low-power systems requiring stable gain accuracy over –40°C to +125°C and robust common-mode rejection (105 dB min) across noisy 12-V and 24-V rails.
Technical Context
The INA215BIDCKR implements a zero-drift chopper-stabilized amplifier topology to achieve ultra-low offset and drift, supporting accurate measurement of sub-10-mA currents via 10-mV full-scale shunt drops. Its differential input stage accepts common-mode voltages from –0.1 V to 26 V independent of supply voltage, enabling direct sensing on high-side switching nodes without level-shifting circuitry.
It delivers 40 kHz bandwidth with 0.4 V/µs slew rate and 25 nV/√Hz input-referred voltage noise, while maintaining output swing within 50 mV of GND and 200 mV of V+ under 10-kΩ load - critical for interfacing with low-voltage ADCs in battery-powered applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 75 V/V - sets output voltage scaling for precise 10-mV shunt drop → 750-mV full-scale output, minimizing ADC resolution loss. |
| Input Offset Voltage (max) | ±60 µV RTI - enables <1% error at 10-mV shunt drop, supporting high-accuracy low-current detection. |
| Offset Drift (max) | 0.5 µV/°C - ensures <0.06% gain-equivalent error over –40°C to +125°C, eliminating calibration rework in automotive-qualified designs. |
| Common-Mode Range | –0.1 V to 26 V - allows direct high-side sensing on 24-V industrial rails or negative-rail protection circuits without external biasing. |
| Supply Voltage Range | 2.7 V to 26 V - powers from single Li-ion cell (3.3 V) up to 24-V system rails, simplifying supply architecture. |
| Quiescent Current (max) | 100 µA - supports always-on current monitoring in battery-backed systems with multi-year runtime. |
| Bandwidth | 40 kHz - captures fast transient load events (e.g., CPU burst current) without phase lag in closed-loop power control. |
Pinout & Package
INA215BIDCKR is packaged in a 6-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for high-density PCB layouts in portable electronics and telecom modules.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Analog power supply | Accepts 2.7–26 V; bypass capacitor required at pin for stability; powers internal amplifier and reference buffer. |
| GND | Analog ground | Reference node for all analog signals; must be connected to low-impedance system ground plane near shunt resistor. |
| IN+ | Differential input (+) | Connects to supply side of shunt; high-impedance input (13.3 kΩ) minimizes loading error in high-side configurations. |
| IN− | Differential input (−) | Connects to load side of shunt; matched impedance to IN+ ensures CMRR >105 dB even with PCB trace mismatch. |
| REF | Reference voltage input | Sets output common-mode level; tied to GND for single-ended output, or to mid-supply for rail-to-rail ADC interface. |
| OUT | Analog output | Voltage-output stage drives 10-kΩ loads; swing limited to (V+) – 0.2 V and GND + 0.005 V - compatible with 1.8-V and 3.3-V ADCs. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates 1/f noise and thermal drift, enabling stable 10-mV full-scale shunt operation over temperature without recalibration. |
| Bidirectional current sensing | Supports both charge and discharge current monitoring in battery packs via polarity-sensitive output relative to REF pin. |
| High CMRR (105 dB min) | Rejects noise from switching regulators and motor drivers, preserving signal integrity when sensing on noisy 12-V/24-V rails. |
| Low quiescent current (100 µA max) | Enables continuous current monitoring in energy-harvesting and IoT edge devices with microamp-level power budgets. |
| SC70-6 package | 2.0 mm × 1.25 mm footprint reduces board area by >50% vs SOIC-8, critical for ultra-thin notebooks and compact base stations. |
Applications
| Power Management in Notebook Computers | Battery Charging Systems |
|---|---|
Use Scenario: Real-time monitoring of CPU/GPU rail current during dynamic load changes to trigger thermal throttling or adaptive voltage scaling. IC Role / Device Role / Timing Role: High-side current shunt monitor providing 40-kHz bandwidth output to microcontroller ADC for closed-loop power optimization. Use Value: Enables 10-mV shunt drop with ±0.5% total error over temperature, reducing shunt power loss by 90% vs legacy 100-mV solutions. |
Use Scenario: Bidirectional current measurement during lithium-ion battery charge/discharge cycles to compute state-of-charge and detect overcurrent faults. IC Role / Device Role / Timing Role: Zero-drift amplifier referenced to battery midpoint, delivering stable output for coulomb counting over 500+ cycles. Use Value: ±60 µV offset ensures <1% error at 1-A charge current with 10-mΩ shunt, improving SOC accuracy to ±2%. |
| Telecom Power Distribution Units | Industrial 24-V PLC I/O Modules |
Use Scenario: Monitoring individual 48-V DC-DC converter outputs feeding server line cards to detect early-stage short-circuit failures. IC Role / Device Role / Timing Role: High-side current sensor with –0.1 V to 26 V common-mode range, interfaced to isolated ADC via REF-grounded configuration. Use Value: 105 dB CMRR rejects switching noise from adjacent 500-kHz converters, preventing false fault triggers. |
Use Scenario: Low-side current sensing on 24-V solenoid driver outputs to verify actuator engagement and detect open-load conditions. IC Role / Device Role / Timing Role: Precision shunt monitor with 75 V/V gain scaling 200-mA full-scale current to 15-V output for 12-bit ADC input range. Use Value: 0.5 µV/°C drift limits gain error to <0.03% over –40°C to +85°C operating range, ensuring consistent trip thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA214BIDCKR | 100 V/V gain, ±100 µV max offset, same SC70-6 package and supply range. | Better suited for lower-current applications requiring higher output voltage per mV shunt drop (e.g., 5-mA full-scale). | Select when higher gain is needed to maximize ADC resolution for sub-10-mA measurements; trade-off is reduced dynamic range. |
| MAX4080TASA+ | 20 V/V gain, ±100 µV offset, 2.7–76 V supply, SO-8 package; no REF pin. | Designed for high-voltage industrial sensing (>40 V); lacks bidirectional capability and REF-based output offset control. | Choose for >40 V common-mode applications where REF flexibility is unnecessary and SO-8 layout is acceptable. |
Compared with INA214BIDCKR and MAX4080TASA+, the INA215BIDCKR offers optimal balance of gain (75 V/V), ultra-low drift (0.5 µV/°C), and SC70 size for 10–100 mA sensing in space-constrained 12–24 V systems - making it preferred for notebook power rails and telecom PDUs where accuracy, size, and thermal stability are co-prioritized.
Availability
INA215BIDCKR is available at Aetrix Electronics and suitable for notebook computer power management, battery charging systems, telecom power distribution units, and industrial 24-V PLC I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for INA215BIDCKR 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 amplifiers, power management ICs, and signal chain solutions.
The INA21x product line was engineered for high-accuracy, low-power current sensing in battery-powered and telecom infrastructure equipment - emphasizing zero-drift performance, wide common-mode range, and SC70/UQFN packaging for miniaturized power monitoring.
FAQ
What is the maximum common-mode voltage supported by the INA215BIDCKR?
The INA215BIDCKR supports a common-mode input voltage range of –0.1 V to 26 V across its IN+ and IN– pins, independent of supply voltage. This allows direct high-side sensing on 24-V industrial rails or negative-rail protection circuits without external level-shifting components. The specification applies over the full –40°C to +125°C operating temperature range and is validated per TI's SBOS437K datasheet Section 5.5.
Does the INA215BIDCKR support bidirectional current measurement?
Yes, the INA215BIDCKR supports bidirectional current sensing through its REF pin configuration: when REF is tied to GND, output voltage is positive for current flowing from IN+ to IN– (high-side); when REF is biased to mid-supply, output swings above and below REF to indicate direction. This enables charge/discharge monitoring in battery packs without external op-amps, as confirmed in Section 6.3.2 of the official datasheet.
What is the typical bandwidth and slew rate of the INA215BIDCKR?
The INA215BIDCKR 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 capture of fast load transients - such as CPU burst currents in notebooks - while maintaining phase margin for stable closed-loop feedback. Both parameters are specified in Section 5.5 of the SBOS437K datasheet under "Frequency Response" and "Output" categories.
Can the INA215BIDCKR operate from a 3.3-V supply?
Yes, the INA215BIDCKR operates from a minimum supply voltage of 2.7 V, making it fully compatible with 3.3-V systems. At 3.3 V, it maintains full functionality including 40 kHz bandwidth, ±60 µV offset, and output swing within 50 mV of GND and 200 mV of V+. Quiescent current remains ≤100 µA, supporting low-power always-on monitoring in battery-backed applications - all verified in Section 5.3 and 5.5 of the TI datasheet.
What package type is used for the INA215BIDCKR?
The INA215BIDCKR uses the SC70-6 (DCK) package, a 2.00 mm × 1.25 mm surface-mount outline with 0.65-mm lead pitch. This compact footprint reduces PCB area by over 50% compared to SOIC-8 alternatives, making it ideal for ultra-thin notebooks and dense telecom modules. Pin configuration and mechanical dimensions are documented in Section 12 of the SBOS437K datasheet and TI's orderable addendum.
INA215BIDCKR 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
INA215BIDCKR FAQ
1.How can I place an order for INA215BIDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA215BIDCKR 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 INA215BIDCKR reliable?
The price and inventory of INA215BIDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA215BIDCKR is usually 5 days.
3.What payment methods are accepted for INA215BIDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA215BIDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA215BIDCKR?
INA215BIDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA215BIDCKR 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 INA215BIDCKR?
For technical support, including INA215BIDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA215BIDCKR requirements.
6.How does Aetrix verify that INA215BIDCKR is sourced from the original manufacturer or authorized distributors?
All INA215BIDCKR 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 INA215BIDCKR meets industry standards.
7.What is the process for return or replacement of INA215BIDCKR?
All INA215BIDCKR units undergo pre-shipment inspection (PSI). If there is an issue with INA215BIDCKR, 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 INA215BIDCKR part is unused and in its original packaging.
Return procedure for INA215BIDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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