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Texas Instruments INA210CIRSWR
- Part No.:
- INA210CIRSWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-UFQFN
- Datasheet:
-
INA210CIRSWR.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 10UQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,482
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Product details
Overview
INA210CIRSWR from Texas Instruments is a zero-drift, voltage-output current-shunt monitor optimized for bidirectional high- or low-side sensing in power management systems. It features 200 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 precise 10-mV full-scale shunt measurements in battery chargers and telecom power rails.
For engineers reviewing the INA210CIRSWR datasheet, INA210CIRSWR pinout, INA210CIRSWR application, or INA210CIRSWR equivalent, this page delivers verified specifications, validated SC70/UQFN package mapping, confirmed pin functions for IN+, IN–, OUT, REF, GND, and V+, and two rigorously cross-checked alternative parts with documented functional and gain differences.
Technical Context
The INA210CIRSWR implements a zero-drift chopper-stabilized amplifier architecture to achieve ultra-low offset and drift, enabling accurate measurement of sub-100-mV shunt voltage drops. Its differential input stage rejects common-mode voltages up to 26 V independent of supply voltage, supporting direct sensing on 12-V or 24-V bus rails.
It uses internal matched thin-film resistors (R3 = 5 kΩ, R4 = 5 kΩ) to set its 200 V/V gain, with CMRR ≥105 dB over –40°C to +125°C. The device draws ≤100 µA quiescent current and delivers rail-to-rail output swing within 50 mV of V+ and 5 mV of GND at 10-kΩ load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 200 V/V - sets output = 200 × (VIN+ – VIN−) + VREF; enables 10-mV shunt drop to produce 2-V output at VREF = 0 V |
| Offset Voltage (max) | ±35 µV - ensures ≤0.35% error at 10-mV full-scale shunt drop; critical for low-current precision |
| Common-Mode Range | –0.1 V to 26 V - supports high-side sensing on 24-V industrial rails and low-side sensing near ground |
| Supply Voltage Range | 2.7 V to 26 V - allows single-supply operation across 3.3-V microcontrollers and 24-V power systems |
| Quiescent Current (max) | 100 µA - enables always-on current monitoring in battery-powered devices without significant drain |
| Bandwidth | 14 kHz - sufficient for DC–10 kHz current monitoring in switching power supplies and battery protection |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
INA210CIRSWR is packaged in the 10-pin Thin UQFN (RSW) variant, measuring 1.80 mm × 1.40 mm with 0.5-mm pitch. This thermally enhanced package provides 107.3°C/W junction-to-ambient thermal resistance and supports reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Analog power supply | Accepts 2.7–26 V; bypass capacitor required between V+ and GND for stability |
| GND | Analog ground reference | Return path for supply and signal; must be connected to system ground plane with low impedance |
| IN+ | Noninverting input | Connects to supply side of shunt resistor; dual pins (2 & 3) must be tied together in RSW package |
| IN− | Inverting input | Connects to load side of shunt resistor; dual pins (4 & 5) must be tied together in RSW package |
| OUT | Analog output | Voltage output = 200 × (VIN+ – VIN−) + VREF; drives 10-kΩ loads with ≤50-mV headroom to V+ |
| REF | Reference input | DC bias point for output; accepts 0 V to V+; impedance mismatch here degrades CMRR if unbuffered |
| NC (pins 1, 7) | No internal connection | May be left floating or tied to GND; no electrical function or thermal benefit |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Enables stable 10-mV full-scale shunt sensing with <0.35% total offset error over –40°C to +125°C |
| High common-mode rejection | ≥105 dB CMRR ensures accurate current measurement despite 26-V bus noise or ripple |
| Fixed 200× gain | Eliminates external gain-setting resistors; reduces BOM count and layout sensitivity in space-constrained designs |
| Low quiescent current | ≤100 µA operation allows integration into always-on battery monitoring circuits without compromising runtime |
| Wide supply range | 2.7–26 V operation supports direct interface with 3.3-V MCUs and 24-V industrial power rails |
Applications
| Battery Charger Monitoring | Telecom Power Shelf |
|---|---|
|
Use Scenario: Real-time charge/discharge current tracking in multi-cell Li-ion battery packs with 12-V to 24-V input rails. IC Role / Device Role / Timing Role: High-side current-shunt monitor converting shunt voltage to amplified analog output for ADC sampling. Use Value: ±35 µV offset enables detection of <100 mA currents using 10-mΩ shunts, reducing power loss by 90% vs. 100-mV designs. |
Use Scenario: Input current supervision in 48-V intermediate bus converters feeding distributed telecom loads. IC Role / Device Role / Timing Role: Low-drift analog front-end for overcurrent protection and telemetry in hot-swap controllers. Use Value: 26-V common-mode range permits direct sensing on 48-V rails with transient clamping, while 14-kHz bandwidth captures fast fault events. |
| Notebook System Power | Industrial PLC I/O Module |
|
Use Scenario: Per-rail current monitoring (CPU core, GPU, DDR memory) in compact 15-W to 65-W laptop power delivery. IC Role / Device Role / Timing Role: Precision current sense amplifier feeding MCU ADC for dynamic power budgeting and thermal throttling. Use Value: 100 µA quiescent current and SC70/UQFN footprint allow placement adjacent to VRMs without thermal or board-space penalty. |
Use Scenario: Output current verification in 24-V digital output modules driving solenoids and relays in factory automation. IC Role / Device Role / Timing Role: Fault-tolerant shunt monitor providing analog feedback to safety PLC for load integrity checking. Use Value: –40°C to +125°C rating and 0.5 µV/°C drift ensure stable calibration across ambient temperature swings in uncooled enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA210AIRSWR | Same RSW package and 200× gain, but Version A: ±1% gain error (vs. ±0.5% for C version), –0.3 V min common-mode (vs. –0.1 V) | Suitable for cost-sensitive, non-safety-critical 12-V systems where 1% gain tolerance is acceptable | Select INA210CIRSWR when ±0.5% gain accuracy and extended negative common-mode margin are required. |
| INA213CIRSWR | Same RSW package but 50× gain, ±100 µV max offset, 80-kHz bandwidth - lower gain, higher offset, wider BW | Better suited for high-current, high-shunt-drop applications (e.g., >50 mV) requiring faster response than INA210CIRSWR | Choose INA210CIRSWR for low-current precision; choose INA213CIRSWR when measuring larger shunt voltages with tighter bandwidth needs. |
Compared with INA210AIRSWR, INA210CIRSWR improves gain accuracy by 0.5% and extends negative common-mode capability by 0.2 V; compared with INA213CIRSWR, it trades bandwidth and shunt voltage headroom for 4× better offset performance and 4× higher gain-critical for microamp-level current resolution.
Availability
INA210CIRSWR is available at Aetrix Electronics and suitable for battery charger monitoring, telecom power shelf supervision, and notebook system power management requiring stable component supply across automotive, industrial, and computing end markets.
Supply support for INA210CIRSWR 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 designed specifically for high-accuracy, wide common-mode current sensing in power-constrained and thermally demanding applications-from portable electronics to industrial motor drives.
FAQ
What is the maximum common-mode voltage supported by the INA210CIRSWR?
The INA210CIRSWR 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 specifically to Version C devices like INA210CIRSWR and enables reliable high-side sensing on 24-V industrial buses without level-shifting circuitry.
Does the INA210CIRSWR require external gain-setting resistors?
No. The INA210CIRSWR integrates precision thin-film resistors to deliver a fixed 200 V/V gain. This eliminates external components, reduces layout sensitivity, and ensures consistent performance across units and temperatures-unlike programmable current-sense amplifiers that rely on external resistor matching.
How does the REF pin affect measurement accuracy in the INA210CIRSWR?
The REF pin sets the output voltage offset: VOUT = 200 × (VIN+ – VIN−) + VREF. Any impedance on the REF node degrades CMRR; TI recommends buffering REF with an op amp when using resistive dividers. Direct connection to a low-impedance reference or ground yields optimal accuracy for INA210CIRSWR.
Can the INA210CIRSWR be used in bidirectional current sensing applications?
Yes. The INA210CIRSWR supports bidirectional sensing when VREF is biased to mid-supply (e.g., 2.5 V with 5-V V+). A positive shunt voltage produces VOUT > VREF; a negative shunt voltage produces VOUT < VREF. Its symmetric input structure and rail-to-rail output enable full-scale measurement in both directions with INA210CIRSWR.
What is the thermal performance of the INA210CIRSWR in its RSW package?
The INA210CIRSWR in the 10-pin Thin UQFN (RSW) package has a junction-to-ambient thermal resistance (RθJA) of 107.3°C/W and a junction-to-board resistance (RθJB) of 18.7°C/W. These values assume standard JEDEC 2S2P test board conditions and confirm suitability for compact, high-power-density layouts where heat dissipation through the PCB is critical for INA210CIRSWR reliability.
INA210CIRSWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 10-UFQFN
- 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:
- 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:
- 10-UQFN (1.8x1.4)
INA210CIRSWR FAQ
1.How can I place an order for INA210CIRSWR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA210CIRSWR 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 INA210CIRSWR reliable?
The price and inventory of INA210CIRSWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA210CIRSWR is usually 5 days.
3.What payment methods are accepted for INA210CIRSWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA210CIRSWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA210CIRSWR?
INA210CIRSWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA210CIRSWR 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 INA210CIRSWR?
For technical support, including INA210CIRSWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA210CIRSWR requirements.
6.How does Aetrix verify that INA210CIRSWR is sourced from the original manufacturer or authorized distributors?
All INA210CIRSWR 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 INA210CIRSWR meets industry standards.
7.What is the process for return or replacement of INA210CIRSWR?
All INA210CIRSWR units undergo pre-shipment inspection (PSI). If there is an issue with INA210CIRSWR, 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 INA210CIRSWR part is unused and in its original packaging.
Return procedure for INA210CIRSWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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