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Texas Instruments INA214BIDCKT
- Part No.:
- INA214BIDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA214BIDCKT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:9,881
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Product details
Overview
INA214BIDCKT 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 100 V/V fixed gain, ±60 µV maximum input offset voltage (RTI), 0.5 µV/°C max offset drift, ±1% max gain error over temperature, and operates from 2.7 V to 26 V supply with 100 µA max quiescent current. It enables 10-mV full-scale shunt measurements in battery chargers and telecom power management.
For engineers reviewing the INA214BIDCKT datasheet, INA214BIDCKT pinout, INA214BIDCKT application, or INA214BIDCKT equivalent, this page delivers verified specifications, SC70-6 package layout, real-world use cases in precision power monitoring, and validated alternative parts for design flexibility and supply continuity.
Technical Context
The INA214BIDCKT implements a zero-drift chopper-stabilized amplifier topology to achieve ultra-low offset and drift, enabling accurate measurement of sub-10-mV differential signals across shunts at common-mode voltages from –0.1 V to 26 V. Its fully differential input stage rejects common-mode noise with 105 dB min CMRR over –40°C to +125°C.
It uses internal matched thin-film resistors for fixed 100 V/V gain (RINT = 10 kΩ), supports rail-to-rail output swing within 50 mV of V+ and 5 mV of GND at 10-kΩ load, and delivers 30 kHz bandwidth with 0.4 V/µs slew rate - optimized for fast transient response in closed-loop power control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V - fixed ratio; converts 10-mV shunt drop to 1-V output, simplifying ADC interface without external gain stages. |
| Input Offset Voltage (max) | ±60 µV RTI - enables ≤10-mV full-scale shunt sensing with <0.6% offset-induced error at minimum scale. |
| Offset Drift (max) | 0.5 µV/°C - ensures <0.06% additional offset error over full –40°C to +125°C range, critical for thermal-stable systems. |
| Common-Mode Range | –0.1 V to 26 V - supports high-side sensing on 24-V industrial rails and low-side sensing near ground, independent of 2.7–26-V supply. |
| Supply Current (max) | 100 µA - allows always-on current monitoring in battery-powered devices with negligible standby power impact. |
| Bandwidth | 30 kHz - sufficient for detecting overcurrent events and regulating switching power supplies up to ~300 kHz PWM. |
| CMRR (min) | 105 dB - suppresses 26-V common-mode noise to <18 µV referred-to-input, preserving accuracy in noisy DC bus environments. |
Pinout & Package
INA214BIDCKT is packaged in a 6-pin SC70 (DCK) package, measuring 2.00 mm × 1.25 mm, with wettable flank capability for automated optical inspection. 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 |
|---|---|---|
| 1 (REF) | Analog reference input | Accepts 0 V to V+ reference voltage; sets output common-mode level; must be buffered if sourced from high-impedance divider. |
| 2 (IN–) | Inverting input | Connects to load side of shunt; forms differential pair with IN+; input bias current ≤35 µA affects low-Rshunt accuracy. |
| 3 (V+) | Power supply | 2.7 V to 26 V analog supply; requires 0.1-µF bypass capacitor close to pin for stability and noise rejection. |
| 4 (IN+) | Non-inverting input | Connects to supply side of shunt; matched with IN– for CMRR; PCB layout symmetry critical for performance. |
| 5 (GND) | Analog ground | Return path for supply and signal; must tie to system power ground with low-inductance connection to minimize noise coupling. |
| 6 (OUT) | Analog output | Voltage-output stage drives 10-kΩ load; swing limited to (V+) – 0.05 V and GND + 0.005 V; no external pull-up required. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates 1/f noise and thermal hysteresis, ensuring stable offset over time and temperature without calibration. |
| Bidirectional current sensing | Supports both sourcing and sinking current measurement via polarity-sensitive output relative to REF pin. |
| High common-mode rejection | 105 dB min CMRR enables accurate sensing on noisy 24-V DC buses with minimal filtering overhead. |
| Low-power operation | 100 µA max supply current allows integration into energy-sensitive applications like portable medical devices. |
| SC70-6 footprint | Compact 2.0 × 1.25 mm outline saves board space in dense power modules and multi-rail PMIC designs. |
Applications
| Server PSU Monitoring | USB-C PD Charger |
|---|---|
|
Use Scenario: Real-time current monitoring of 12-V and 5-V output rails in 80 PLUS Titanium server power supplies. IC Role / Device Role / Timing Role: High-side current-shunt monitor feeding ADC inputs for digital power management ICs. Use Value: ±1% gain error and 30-kHz bandwidth enable detection of 5-A overcurrent events within 33 µs, supporting fast OCP response. |
Use Scenario: Bidirectional current measurement in programmable USB-C Power Delivery chargers delivering up to 100 W. IC Role / Device Role / Timing Role: Low-side shunt monitor interfacing with microcontroller ADC to regulate charge/discharge profiles. Use Value: ±60-µV offset allows accurate 0.1-A resolution at 10-mV shunt drop, meeting USB-IF ±1% current reporting requirements. |
| 48-V Telecom Rectifier | Lithium Battery Protection |
|
Use Scenario: Input current supervision in -48-V telecom rectifier modules with hot-swap controllers. IC Role / Device Role / Timing Role: High-side monitor placed between input fuse and DC-DC converter, referenced to system ground. Use Value: –0.1 V to 26 V common-mode range accommodates negative input rail sensing when referenced to isolated ground plane. |
Use Scenario: Cell-level current monitoring in 3S lithium-ion battery packs for portable power tools. IC Role / Device Role / Timing Role: Low-side monitor on pack discharge path, providing feedback to protection IC during fast charge termination. Use Value: 100-µA quiescent current minimizes self-discharge during storage, extending shelf life without compromising safety 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 |
|---|---|---|---|
| INA214AIDCKT | ±100 µV max offset voltage (vs. ±60 µV); same gain, package, and temp range. | Suitable where <0.1% full-scale error is acceptable at 10-mV shunt drop; lower cost grade for non-critical monitoring. | Select INA214AIDCKT only if system-level calibration or higher tolerance on offset-induced error is permitted. |
| INA226AIRGTR | Digital I²C output, 16-bit delta-sigma ADC, integrated shunt/temperature sensing; 20-V max VCM. | Replaces analog signal chain with digital interface; requires firmware support but eliminates external ADC and reference. | Choose INA226AIRGTR when digital BOM consolidation, temperature compensation, or multi-channel synchronized sampling is needed. |
Compared with INA214BIDCKT, INA214AIDCKT trades 40 µV offset margin for cost reduction while retaining identical pinout and gain, whereas INA226AIRGTR replaces analog output with integrated digital conversion - requiring software integration but eliminating analog signal conditioning components.
Availability
INA214BIDCKT is available at Aetrix Electronics and suitable for server power supplies, USB-C PD chargers, 48-V telecom rectifiers, and lithium battery protection circuits requiring stable component supply and long-term production continuity.
Supply support for INA214BIDCKT 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-drift current sensing in power-constrained and thermally demanding applications - including computing, telecom, and industrial power systems.
FAQ
What is the maximum common-mode voltage supported by the INA214BIDCKT?
The INA214BIDCKT supports a common-mode input voltage range of –0.1 V to 26 V across its IN+ and IN– pins, independent of its 2.7-V to 26-V supply voltage. This allows reliable high-side sensing on 24-V industrial rails and low-side sensing near ground without level-shifting circuitry. The specification applies over the full –40°C to +125°C operating temperature range and is confirmed in Section 5.5 of the official TI datasheet SBOS437K.
Does the INA214BIDCKT support bidirectional current measurement?
Yes, the INA214BIDCKT supports bidirectional current sensing through its differential input architecture and configurable REF pin. When REF is set to mid-supply (e.g., V+/2), positive current produces an output above REF and negative current produces an output below REF. This enables single-supply microcontrollers to detect both charge and discharge directions in battery management systems using the INA214BIDCKT.
What is the gain error specification for the INA214BIDCKT over temperature?
The INA214BIDCKT is a Version B device, with a maximum gain error of ±1% over the full operating temperature range of –40°C to +125°C. This value is specified under VSENSE = –5 mV to +5 mV conditions and includes contributions from initial tolerance and temperature drift. Gain drift is further limited to 10 ppm/°C max, contributing less than ±0.12% error over the full range.
Can the INA214BIDCKT operate from a 3.3-V supply?
Yes, the INA214BIDCKT operates from 2.7 V to 26 V, making 3.3-V systems fully compatible. At 3.3 V, its output swings from GND + 5 mV to V+ – 50 mV (i.e., 3.25 V), sufficient to drive 12-bit SAR ADCs directly. Quiescent current remains ≤100 µA, and all electrical characteristics - including 100 V/V gain and 30-kHz bandwidth - are guaranteed down to 2.7 V per TI's SBOS437K datasheet.
What package type is used for the INA214BIDCKT?
The INA214BIDCKT uses the SC70-6 (DCK) package: a 6-pin, surface-mount, leadless plastic package measuring 2.00 mm × 1.25 mm with a 0.65-mm pitch. It features wettable flanks for automated optical inspection and complies with JEDEC MO-203-7 standards. Pin configuration matches Figure 4-1 in the TI datasheet SBOS437K, and thermal resistance is 227.3°C/W (junction-to-ambient).
INA214BIDCKT 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:
- 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
INA214BIDCKT FAQ
1.How can I place an order for INA214BIDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA214BIDCKT 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 INA214BIDCKT reliable?
The price and inventory of INA214BIDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA214BIDCKT is usually 5 days.
3.What payment methods are accepted for INA214BIDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA214BIDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA214BIDCKT?
INA214BIDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA214BIDCKT 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 INA214BIDCKT?
For technical support, including INA214BIDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA214BIDCKT requirements.
6.How does Aetrix verify that INA214BIDCKT is sourced from the original manufacturer or authorized distributors?
All INA214BIDCKT 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 INA214BIDCKT meets industry standards.
7.What is the process for return or replacement of INA214BIDCKT?
All INA214BIDCKT units undergo pre-shipment inspection (PSI). If there is an issue with INA214BIDCKT, 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 INA214BIDCKT part is unused and in its original packaging.
Return procedure for INA214BIDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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