My Inquiry
My Account
Texas Instruments INA215CIRSWR
- Part No.:
- INA215CIRSWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-UFQFN
- Datasheet:
-
INA215CIRSWR.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 10UQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,711
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
INA215CIRSWR from Texas Instruments is a voltage-output, zero-drift current-shunt monitor optimized for bidirectional high- or low-side sensing in power management systems. It features 75 V/V fixed gain, ±60 µV max input offset voltage (RTI), 0.5 µV/°C max offset drift, ±0.5% max gain error over temperature, and operates from 2.7 V to 26 V supply with 100 µA max quiescent current. It enables precise current measurement with as little as 10-mV full-scale shunt voltage drop in battery chargers and telecom power supplies.
For engineers reviewing the INA215CIRSWR datasheet, INA215CIRSWR pinout, INA215CIRSWR application, or INA215CIRSWR 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 RSW-package characterization.
Technical Context
The INA215CIRSWR implements a zero-drift chopper-stabilized amplifier architecture to achieve ultra-low offset and drift, supporting accurate bidirectional current sensing across –0.1 V to 26 V common-mode range independent of supply voltage. Its differential input stage rejects common-mode transients while maintaining 105 dB min CMRR over –40°C to +125°C.
It uses a fixed 75 V/V gain set by internal resistor ratios (R3 = 13.3 kΩ, R4 = 1 MΩ), delivering 40 kHz bandwidth at 10 pF load and 0.4 V/µs slew rate. The REF pin accepts 0 V to V+ reference voltage, enabling offset-adjusted output scaling without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Fixed Gain | 75 V/V - sets output voltage as VOUT = (ISHUNT × RSHUNT) × 75 + VREF; enables 13.3 mV shunt drop for 1-V output swing. |
| Input Offset Voltage (RTI) | ±60 µV max - supports ≤10-mV full-scale shunt drops with <0.6% offset-induced error at 100-mA sense current. |
| Offset Drift | 0.5 µV/°C max - contributes ≤0.06 mV error over –40°C to +125°C ambient, critical for thermal-stable battery monitoring. |
| Gain Error | ±0.5% max over temperature - ensures consistent scaling across industrial temperature range without calibration. |
| Common-Mode Range | –0.1 V to 26 V - allows direct sensing on 24-V bus rails or negative-grounded shunts without level-shifting. |
| Supply Voltage | 2.7 V to 26 V - powers from single Li-ion cell up to 24-V industrial rail; decoupling capacitor required at V+. |
| Quiescent Current | 100 µA max - enables always-on current monitoring in energy-constrained portable systems. |
Pinout & Package
INA215CIRSWR is packaged in a 10-pin Thin UQFN (RSW) with 1.80 mm × 1.40 mm body size and 0.5-mm pitch. Thermal resistance is 107.3°C/W (junction-to-ambient) and 18.7°C/W (junction-to-board), supporting compact PCB layouts with minimal heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Analog power supply | Accepts 2.7 V–26 V; requires 0.01–0.1 µF bypass capacitor placed adjacent to pin for stability. |
| GND | Analog ground reference | Low-impedance return path; must be tied to system power ground with short trace to minimize noise coupling. |
| IN+ | Noninverting input | Connects to supply-side of shunt; two pins (2 & 3) are internally paralleled-both must be routed to same net. |
| IN− | Inverting input | Connects to load-side of shunt; two pins (4 & 5) are internally paralleled-both must be routed to same net. |
| OUT | Analog voltage output | Delivers gain-scaled, referenced output; drives 10-kΩ loads with rail-to-rail swing (GND + 5 mV to V+ − 200 mV). |
| REF | Reference voltage input | Sets output zero point; 0 V to V+ range allows bipolar or unipolar output scaling without external op-amp. |
| NC (pins 1, 7) | No internal connection | May be left floating or tied to GND; no electrical function-used for mechanical stability and thermal relief. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Enables stable 10-mV full-scale shunt measurements with <0.1% offset drift contribution over full temperature range. |
| Bidirectional sensing capability | Supports current flow in either direction through shunt; output polarity relative to REF indicates direction. |
| High common-mode rejection | 105 dB min CMRR ensures accuracy despite 12-V common-mode ripple on 24-V telecom power rails. |
| Low quiescent power | 100 µA max supply current permits integration into always-on battery fuel gauging or standby power monitors. |
| Robust ESD rating | ±3500 V HBM (Version C) allows safe handling in standard manufacturing environments without special precautions. |
Applications
| Battery Charger Monitoring | Telecom Power Supply |
|---|---|
|
Use Scenario: Real-time charge/discharge current tracking in multi-cell Li-ion charger ICs with 12-V input and 16.8-V output. IC Role / Device Role / Timing Role: Current-shunt monitor measuring bidirectional current across 5-mΩ shunt on high-side of buck converter output stage. Use Value: ±0.5% gain error and ±60 µV offset enable ±100-mA accuracy at 5-A full scale, improving state-of-charge estimation. |
Use Scenario: Input current supervision in 48-V DC-DC front-end modules for 5G base station power distribution units. IC Role / Device Role / Timing Role: High-side current sensor on 48-V primary bus, interfacing to isolated ADC via REF-referenced output. Use Value: –0.1 V to 26 V common-mode range accommodates transient surges while maintaining 40 kHz bandwidth for fast fault detection. |
| Notebook System Power Rail | Industrial PLC I/O Module |
|
Use Scenario: Per-rail current monitoring on CPU core (1.2 V), GPU (1.0 V), and DDR memory (1.2 V) supplies in ultrabook platforms. IC Role / Device Role / Timing Role: Low-side current monitor placed between VRM output and load, with REF tied to system ground. Use Value: 75 V/V gain and 100 µA quiescent current allow 10-mV shunt drop with minimal power loss and thermal impact. |
Use Scenario: Overcurrent protection and diagnostics in 24-V digital output modules driving solenoids and relays. IC Role / Device Role / Timing Role: Bidirectional shunt monitor on switched 24-V output channel, feeding analog input of microcontroller. Use Value: Zero-drift performance ensures stable trip thresholds across –40°C to +85°C operating range without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA214AIRSWR | 100 V/V gain, ±100 µV max offset, same RSW package and pinout. | Better sensitivity for lower-current rails (e.g., 5-V logic supplies); higher gain increases noise susceptibility. | Select when 10-mV shunt drop yields >1-V output and system noise floor permits. |
| INA226AIRSAT | I²C digital output, 16-bit ADC, integrated shunt/temperature sensing, SOIC-10 package. | Replaces analog signal chain with digital interface; requires firmware support and adds conversion latency. | Select when system already uses I²C infrastructure and programmable gain/configuration is preferred over analog simplicity. |
Compared with INA215CIRSWR, INA214AIRSWR offers higher gain but larger offset, making it better suited for low-current precision rails; INA226AIRSAT trades analog immediacy for digital configurability and multi-parameter reporting, requiring bus protocol integration but eliminating external ADC needs.
Availability
INA215CIRSWR is available at Aetrix Electronics and suitable for battery chargers, telecom power supplies, notebook power rails, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and guaranteed authenticity.
Supply support for INA215CIRSWR 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 series was designed specifically for high-accuracy, low-power current sensing in space-constrained, thermally demanding applications such as portable computing, telecom infrastructure, and industrial control systems.
FAQ
What is the maximum common-mode voltage supported by the INA215CIRSWR?
The INA215CIRSWR 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 sensing on 24-V industrial buses or negative-grounded shunts without external level-shifting circuitry. The specification is guaranteed for Version C devices over –40°C to +125°C operation per TI SBOS437K.
Does the INA215CIRSWR support bidirectional current measurement?
Yes, the INA215CIRSWR supports true bidirectional current sensing. Its output voltage is referenced to the externally applied REF pin: when current flows from IN+ to IN–, VOUT rises above REF; when current reverses, VOUT falls below REF. This polarity-based indication enables direction detection in battery charge/discharge monitoring and motor control feedback loops.
What is the purpose of the dual IN+ and IN− pins on the RSW package of the INA215CIRSWR?
The INA215CIRSWR's RSW package provides two IN+ pins (2 and 3) and two IN− pins (4 and 5) to reduce parasitic impedance and improve high-frequency common-mode rejection. These pins are internally paralleled-both IN+ pins must be connected to the same node on the shunt's supply side, and both IN− pins to the load side-to maintain matched trace lengths and minimize layout-induced gain/phase errors.
Can the REF pin of the INA215CIRSWR be left unconnected?
No, the REF pin must be actively driven to a defined voltage between 0 V and V+. Leaving REF floating causes unpredictable output offset and potential instability. For unipolar output (e.g., 0–1 V), tie REF to GND; for bipolar output (e.g., ±0.5 V), connect REF to a stable mid-supply voltage using a low-noise buffer or resistive divider with op-amp buffering to preserve CMRR.
How does the zero-drift architecture of the INA215CIRSWR improve measurement accuracy?
The zero-drift chopper-stabilized design of the INA215CIRSWR reduces input offset voltage to ±60 µV max and limits drift to 0.5 µV/°C, enabling accurate current measurement with only 10-mV full-scale shunt voltage drops. This cuts shunt power dissipation by 90% compared to traditional 100-mV designs and eliminates thermal drift-induced calibration drift in wide-temperature applications like automotive and industrial controls.
INA215CIRSWR 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:
- 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:
- 10-UQFN (1.8x1.4)
INA215CIRSWR FAQ
1.How can I place an order for INA215CIRSWR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA215CIRSWR 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 INA215CIRSWR reliable?
The price and inventory of INA215CIRSWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA215CIRSWR is usually 5 days.
3.What payment methods are accepted for INA215CIRSWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA215CIRSWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA215CIRSWR?
INA215CIRSWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA215CIRSWR 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 INA215CIRSWR?
For technical support, including INA215CIRSWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA215CIRSWR requirements.
6.How does Aetrix verify that INA215CIRSWR is sourced from the original manufacturer or authorized distributors?
All INA215CIRSWR 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 INA215CIRSWR meets industry standards.
7.What is the process for return or replacement of INA215CIRSWR?
All INA215CIRSWR units undergo pre-shipment inspection (PSI). If there is an issue with INA215CIRSWR, 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 INA215CIRSWR part is unused and in its original packaging.
Return procedure for INA215CIRSWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA215CIRSWR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
