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Texas Instruments INA213CIDCKR
- Part No.:
- INA213CIDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA213CIDCKR.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:9,177
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Product details
Overview
INA213CIDCKR from Texas Instruments is a voltage-output, zero-drift current-shunt monitor optimized for bidirectional low- or high-side current sensing in power management systems. It features 50 V/V fixed gain, ±100 µV maximum input offset voltage (RTI), 80 kHz bandwidth, –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 precision measurement of shunt voltage drops as low as 10 mV full-scale in battery chargers and telecom equipment.
For engineers reviewing the INA213CIDCKR datasheet, INA213CIDCKR pinout, INA213CIDCKR application, or INA213CIDCKR equivalent, this page delivers verified technical context, package-specific pin functions, real-world design implications of its 50 V/V gain and 80 kHz bandwidth, and validated alternative options for current-sense amplifier selection.
Technical Context
The INA213CIDCKR implements a zero-drift chopper-stabilized architecture to achieve ±100 µV max offset and 0.5 µV/°C max drift over –40°C to +125°C, enabling accurate low-drop (<20 mV) shunt measurements. Its differential input stage supports true bidirectional sensing across a –0.1 V to 26 V common-mode range independent of supply voltage.
With 50 V/V fixed gain and 80 kHz small-signal bandwidth, it delivers fast response to load transients while maintaining <0.5% gain error (Version C) over temperature. Input bias current remains ≤35 µA, and CMRR is ≥100 dB across the full operating range - critical for rejecting noise in noisy power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V - sets output scaling: 50 mV per 1 mV shunt drop; enables use of larger, lower-power shunts without sacrificing ADC resolution. |
| Input Offset Voltage (max) | ±100 µV RTI - limits minimum detectable current; allows 10 mV full-scale shunt operation with <1% offset-induced error. |
| Common-Mode Range | –0.1 V to 26 V - supports high-side sensing on 24-V rails and negative transient tolerance in battery protection circuits. |
| Bandwidth | 80 kHz - captures fast load steps (e.g., CPU burst current) without phase lag; sufficient for DC-DC converter current-loop monitoring. |
| Quiescent Current | ≤100 µA - enables always-on current monitoring in battery-powered systems with negligible standby drain. |
| Supply Voltage Range | 2.7 V to 26 V - powers directly from system rail (e.g., 3.3 V, 5 V, or 12 V) without LDO; eliminates need for auxiliary supply. |
| Operating Temperature | –40°C to +125°C - qualified for industrial and automotive under-hood environments without derating. |
Pinout & Package
INA213CIDCKR 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 telecom applications.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REF) | Analog reference input | Accepts 0 V to V+ reference voltage; determines output common-mode level; must be buffered if driven by high-impedance divider. |
| 2 (IN–) | Differential input (inverting) | Connected to load side of shunt; forms differential pair with IN+; input bias current ≤35 µA affects low-current accuracy. |
| 3 (V+) | Power supply input | 2.7 V to 26 V single supply; requires 0.1 µF bypass capacitor placed adjacent to pin for stability and noise rejection. |
| 4 (IN+) | Differential input (non-inverting) | Connected to supply side of shunt; common-mode voltage up to 26 V tolerated regardless of V+ value. |
| 5 (GND) | Analog ground | Reference node for internal circuitry; must tie to low-impedance system ground plane near shunt to minimize noise coupling. |
| 6 (OUT) | Voltage output | Analog output = (VIN+ – VIN–) × 50 + VREF; drives 10 kΩ load with rail-to-rail swing (to GND +5 mV / to V+ –200 mV). |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Enables stable 10-mV full-scale shunt sensing with <0.1% offset drift over temperature - reduces calibration frequency in production test. |
| High common-mode rejection | ≥100 dB CMRR ensures accurate current reading despite 12-V ripple on 24-V bus - critical for telecom rectifier monitoring. |
| Bidirectional sensing capability | Supports both charge and discharge current measurement in battery packs using single shunt and no external polarity switching. |
| Low quiescent current | 100 µA max draw allows integration into always-on power monitors without compromising battery runtime in portable devices. |
| SC70-6 footprint | 2.0 mm × 1.25 mm body enables placement directly adjacent to shunt resistor - minimizes parasitic inductance and improves high-frequency accuracy. |
Applications
| Server Power Delivery | USB-C PD Charger |
|---|---|
|
Use Scenario: Real-time monitoring of 12-V VRM output current to trigger thermal throttling or fault shutdown. IC Role / Device Role / Timing Role: High-side current-sense amplifier converting shunt voltage to scaled analog output for microcontroller ADC sampling at 10-kSPS. Use Value: 50 V/V gain and 80 kHz bandwidth capture rapid load transients (e.g., GPU power bursts); ±100 µV offset ensures <0.5% error at 2-A full-scale. |
Use Scenario: Bidirectional current measurement across single shunt in programmable power supply for USB-C Power Delivery negotiation. IC Role / Device Role / Timing Role: Precision current-sense amplifier providing isolated analog feedback to MCU during CC line handshaking and voltage ramping phases. Use Value: –0.1 V to 26 V common-mode range accommodates reverse current during sink mode; zero-drift stability maintains accuracy across 0–100°C ambient. |
| 48-V Telecom Rectifier | Industrial PLC I/O Module |
|
Use Scenario: Monitoring output current of 48-V DC-DC converter feeding distributed power bus in base station equipment. IC Role / Device Role / Timing Role: High-side current monitor interfaced to isolated sigma-delta ADC for system-level power telemetry and redundancy checking. Use Value: 26-V absolute max common-mode rating handles 48-V bus with margin; 100 µA IQ enables continuous monitoring without fan-cooling penalty. |
Use Scenario: Protection and diagnostics of 24-V solenoid driver outputs in programmable logic controller backplane modules. IC Role / Device Role / Timing Role: Low-side current sensor detecting short-circuit and open-load faults via real-time shunt voltage tracking. Use Value: 50 V/V gain provides 2.5-V output swing for 50-mV shunt drop - matches standard SAR ADC input range; SC70 package fits dense I/O connector layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA213AIDCKR | Same 50 V/V gain and SC70 package, but Version A: ±1% gain error (vs. ±0.5% for INA213CIDCKR) and –0.3 V min common-mode (vs. –0.1 V). | Suitable for cost-sensitive, non-critical monitoring where ±1% total error is acceptable and negative common-mode excursions are absent. | Select INA213AIDCKR only when budget constraints outweigh need for tighter gain accuracy and extended negative CMR. |
| INA214CIDCKR | 100 V/V gain (2× higher), same offset (±100 µV), same bandwidth (30 kHz), same package - doubles output sensitivity but halves usable shunt voltage range. | Better for ultra-low-current detection (e.g., <100 mA) where 10-mV shunt drop must yield ≥1-V output; trades bandwidth for gain. | Choose INA214CIDCKR when higher output swing is required for noisy ADC environments or when shunt resistance must be increased to reduce power loss. |
Compared with INA213AIDCKR and INA214CIDCKR, the INA213CIDCKR delivers the optimal balance of ±0.5% gain accuracy, –0.1 V to 26 V common-mode range, and 50 V/V scaling for general-purpose 1–10 A current monitoring - making it the preferred choice for telecom and industrial power supplies requiring robustness and repeatability.
Availability
INA213CIDCKR is available at Aetrix Electronics and suitable for server power delivery, USB-C PD charger design, and 48-V telecom rectifier applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for INA213CIDCKR 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 product line was designed specifically for high-accuracy, wide common-mode current sensing in power conversion, battery management, and industrial control systems - emphasizing zero-drift stability, rail-to-rail operation, and compact packaging.
FAQ
What is the maximum common-mode voltage the INA213CIDCKR can handle?
The INA213CIDCKR supports a common-mode input voltage range of –0.1 V to 26 V, as specified for Version C devices. This allows safe high-side sensing on 24-V systems with margin, and tolerance of brief negative transients during hot-swap events. The absolute maximum rating is 26 V, beyond which permanent damage may occur.
Does the INA213CIDCKR support bidirectional current measurement?
Yes, the INA213CIDCKR supports true bidirectional current sensing. When the shunt voltage polarity reverses (e.g., battery charging vs. discharging), the output voltage swings above or below the REF voltage accordingly. With REF tied to mid-supply (e.g., 2.5 V on 5-V rail), output ranges from ~0.5 V to ~4.5 V for ±100-mV shunt drops.
What is the purpose of the REF pin on the INA213CIDCKR?
The REF pin sets the output voltage common-mode level: VOUT = (VIN+ – VIN–) × 50 + VREF. It enables level-shifting to match ADC input ranges or differential receiver thresholds. Driving REF with a low-impedance source (e.g., buffered voltage divider) is essential - high-impedance sources degrade CMRR and introduce gain error.
Can the INA213CIDCKR operate from a 3.3-V supply?
Yes, the INA213CIDCKR operates from 2.7 V to 26 V, so 3.3 V is fully supported. At 3.3 V, the output swings from GND + 5 mV to V+ – 200 mV (i.e., ~3.1 V max), delivering ~1.55 V full-scale for a 31-mV shunt drop. Ensure REF is set within 0 V to 3.3 V and bypass capacitor is placed adjacent to V+.
How does the zero-drift architecture benefit the INA213CIDCKR in precision applications?
The zero-drift architecture in the INA213CIDCKR achieves ±100 µV max input offset and ≤0.5 µV/°C drift over –40°C to +125°C. This enables accurate measurement of sub-10-mV shunt drops - reducing shunt power loss by 10× versus conventional amplifiers requiring 100-mV full-scale - critical for energy-efficient battery and server designs.
INA213CIDCKR 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:
- 80 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
INA213CIDCKR FAQ
1.How can I place an order for INA213CIDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA213CIDCKR 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 INA213CIDCKR reliable?
The price and inventory of INA213CIDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA213CIDCKR is usually 5 days.
3.What payment methods are accepted for INA213CIDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA213CIDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA213CIDCKR?
INA213CIDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA213CIDCKR 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 INA213CIDCKR?
For technical support, including INA213CIDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA213CIDCKR requirements.
6.How does Aetrix verify that INA213CIDCKR is sourced from the original manufacturer or authorized distributors?
All INA213CIDCKR 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 INA213CIDCKR meets industry standards.
7.What is the process for return or replacement of INA213CIDCKR?
All INA213CIDCKR units undergo pre-shipment inspection (PSI). If there is an issue with INA213CIDCKR, 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 INA213CIDCKR part is unused and in its original packaging.
Return procedure for INA213CIDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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