Texas Instruments

INA223 - 26V Programmable-Gain Current Sense & Power Monitor | TI

Name: INA223
Brand: Texas Instruments
Price: 1.82 USD
Availability: InStock

MPN: INA223 ✓ Active

In Stock Ships in 1-3 business days

0 V to 26 V Vdss 250 µA Id SON-10 (2.5x2.5 mm) Package

From $1.82 USD / Unit

MOQ: 1 |

Price updated: 2026-08-24

Volume Pricing

Qty	Unit Price	Extended
1	$2.85	$2.85
10	$2.56	$25.60
100	$2.28	$228.00
500	$2.05	$1,025.00
1,000	$1.82	$1,820.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for INA223 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

INA223AIDGSR

✅ Drop-In

📦 SON-10 (2.5x2.5 mm)

Same die and package, different ordering suffix

📋 Reference alternative (not in catalog)

ℹ️ 4 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

INA223 Maximum Ratings & Electrical Characteristics

Common-Mode Voltage Range	0 V to 26 V
Supply Voltage Range	2.7 V to 5.5 V
Supply Current (Max)	250 µA
Operating Temperature Range	-40°C to +105°C
Package	SON-10 (2.5x2.5 mm)
Gain Options (Programmable)	25, 50, 100, 200 V/V
Output Type	Analog (instantaneous power)
Interface	I²C and SMBus compatible
Offset Voltage (Typ)	50 µV
Gain Error (Typ)	0.2%
Sensing Type	High-side and low-side
Bandwidth	[DATA_NEEDED: bandwidth]
Number of Channels	1
RoHS Status	Compliant
Mounting Type	Surface Mount

INA223 Pin Configuration

Pin 1	VS — Power supply (2.7V to 5.5V)
Pin 2	GND — Ground
Pin 3	IN+ — Positive shunt input
Pin 4	IN- — Negative shunt input
Pin 5	OUT — Analog output (instantaneous power)
Pin 6	A0 — I²C address select
Pin 7	SCL — I²C clock
Pin 8	SDA — I²C data
Pin 9	VBUS — Bus voltage sense input
Pin 10	NC — No connect

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

INA223 is suitable for 6 applications: Server Power Monitoring, Battery-Powered Devices, Industrial Automation, Telecom Power Supplies, Automotive Current Sensing, Solar Power Optimizers.

🖥️

Server Power Monitoring

The INA223 monitors current, voltage, and power of server rails to optimize energy efficiency. Its 26V common-mode range covers 12V rails, and the analog power output allows fast feedback for dynamic voltage scaling. The I²C interface enables configuration of gain for different shunt values. With 250µA supply current, it adds minimal overhead to the power budget. The device's accuracy (50µV offset) ensures reliable power measurement for capacity planning and thermal management.

Recommended

📱

Battery-Powered Devices

In battery-powered devices, the INA223 provides accurate current and power monitoring to estimate state-of-charge and detect faults. Its low 250µA supply current is ideal for always-on monitoring. The programmable gain allows optimization for different current ranges, from microamps to amps. The analog power output can be used to trigger low-battery warnings or shutdown circuits. The -40°C to +105°C range ensures operation in harsh environments.

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BQ76952 · Texas Instruments TLV70018DCKR · Texas Instruments

🏭

Industrial Automation

The INA223 is used in industrial automation to monitor motor currents and power consumption. Its 26V common-mode range handles 24V industrial supplies. The analog output can be fed directly into a PLC analog input for real-time monitoring. The I²C interface allows remote configuration and calibration. The device's accuracy and low drift ensure reliable operation in factory environments with temperature variations.

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DRV8873QPWPRQ1 · Texas Instruments ISO7742FDBQR · Texas Instruments

🌐

Telecom Power Supplies

In telecom equipment, the INA223 monitors -48V rails (using high-side sensing) to ensure stable power delivery. Its 26V common-mode range is suitable for sensing across a shunt on the return path. The analog power output enables fast overcurrent protection. The I²C interface allows for gain adjustment to match different shunt values. The device's low supply current is beneficial in power-constrained telecom modules.

Recommended

TPS23521 · Texas Instruments ISO1042BDWVR · Texas Instruments

🚗

Automotive Current Sensing

The INA223 can be used in automotive systems to monitor battery current, motor current, and load currents. Its 26V common-mode range covers 12V and 24V automotive systems. The device is specified over -40°C to +105°C, suitable for under-hood environments. The analog power output can be used for battery management algorithms. The I²C interface allows for configuration of gain and filtering.

Recommended

BQ79600-Q1 · Texas Instruments TCAN1051HVDQ1 · Texas Instruments

⚡

Solar Power Optimizers

In solar power systems, the INA223 monitors the current and power output of each panel to maximize energy harvest. Its 26V common-mode range covers typical panel voltages. The analog power output can be used for maximum power point tracking (MPPT) algorithms. The I²C interface allows for gain adjustment to match different panel currents. The device's low supply current is ideal for always-on monitoring in remote installations.

Recommended

INA226AIDGSR · Texas Instruments TPS61086DRCR · Texas Instruments

Recommended Products Summary

What is the INA223?

The INA223 is a voltage-output current shunt monitor from Texas Instruments that measures current, bus voltage, and instantaneous power by sensing a voltage drop across a shunt. It operates from 0 V to 26 V common-mode and features an I²C interface for programmable gain. According to the TI datasheet, it draws a maximum supply current of 250 µA.

What is the supply voltage range of INA223?

The INA223 operates from a single +2.7-V to +5.5-V supply. This wide range allows it to be powered from common 3.3-V or 5-V rails. The maximum supply current is 250 µA, making it suitable for battery-powered applications. This information is from the TI product page.

What is the common-mode voltage range of INA223?

The INA223 can sense shunt voltages at common-mode voltages from 0 V to 26 V. This allows it to monitor supply lines up to 26 V, making it suitable for 12-V and 24-V systems. The device supports both high-side and low-side sensing, as stated in the TI datasheet.

How does INA223 measure instantaneous power?

The INA223 incorporates an analog multiplier that multiplies the shunt voltage (proportional to current) by the bus voltage to produce an analog output proportional to instantaneous power. This allows real-time power monitoring without digital computation. The output is an analog voltage that can be read by an ADC.

What is the programmable gain range of INA223?

The INA223 offers programmable gain settings of 25, 50, 100, and 200 V/V via the I²C interface. This allows the user to optimize the output voltage range for different shunt resistor values and current levels. The gain is set by writing to the configuration register.

What is the difference between INA223 and INA226?

The INA223 provides an analog output proportional to instantaneous power, while the INA226 is a digital power monitor with an I²C interface that outputs current, voltage, and power in digital format. The INA223 is simpler for analog control loops, whereas the INA226 offers higher accuracy and digital readout. Both are from Texas Instruments.

Can INA223 be used for high-side sensing?

Yes, the INA223 supports both high-side and low-side sensing. For high-side sensing, the shunt is placed between the supply and the load, and the common-mode voltage can be up to 26 V. This is useful for detecting load shorts and monitoring supply current without disturbing the ground path.

What is the supply current of INA223?

The INA223 draws a maximum supply current of 250 µA. This low quiescent current makes it ideal for battery-powered and always-on monitoring applications. The typical supply current is lower, but the maximum is specified in the datasheet.

What is the operating temperature range of INA223?

The INA223 is specified over the extended temperature range of -40°C to +105°C. This makes it suitable for industrial and automotive environments where temperature extremes are common. The device maintains accuracy across this range due to its zero-drift architecture.

Where can I buy INA223?

The INA223 is available from authorized distributors such as DigiKey and Mouser. As of 2026-08-25, the INA223AIDSKR is in stock at DigiKey. You can also purchase directly from Texas Instruments' website. Prices start at around $2.85 for single units.

What is the price of INA223?

As of 2026-08-25, the INA223AIDSKR is priced at approximately $2.85 for a single unit, with volume discounts available. For 1000 units, the price drops to around $1.82. Prices may vary by distributor and availability.

What is the lead time for INA223?

The lead time for INA223 depends on the distributor and current stock. As of 2026-08-25, DigiKey shows it as 'ships today' for in-stock items. For larger quantities, lead times may be 4-6 weeks. Check with your preferred distributor for current lead times.

Is INA223 in stock?

As of 2026-08-25, the INA223AIDSKR is in stock at DigiKey and can ship today. Mouser also lists it as active. For real-time inventory, check the distributor websites.

What is the best drop-in replacement for INA223?

The INA223AIDSKR is the standard variant. A drop-in replacement with the same SON-10 package and pinout is the INA223AIDGSR (if available). For a functional alternative with similar features, consider the INA226, but it has a different package and digital output, so it is not a drop-in replacement.

Can INA226 replace INA223?

The INA226 cannot directly replace the INA223 because it has a different package (VSSOP-10 vs SON-10) and provides digital output instead of analog. However, it can be used as a functional alternative if the PCB is redesigned. For a drop-in replacement, look for other SON-10 current sense amplifiers.

Engineering reference data for INA223 — comparison, design guidance, and compliance information.

Selection Guide

Choose the INA223 when you need an analog output proportional to instantaneous power for fast analog control loops, such as in power supply feedback or motor control. It is ideal for applications requiring low supply current and a small package. If you prefer digital readout and higher accuracy, consider the INA226, but note it has a different package and is not a drop-in replacement. For basic current sensing without power measurement, the INA169 or INA138 are simpler options but lack the I²C interface and power monitoring capability. The INA223 is the best choice for applications that need real-time power monitoring with minimal power overhead.

Comparison with Alternatives

Parameter	This Product	INA223AIDGSR	INA226AIDGSR	INA219AIDCNR
Package	SON-10 (2.5x2.5 mm)	SON-10 (2.5x2.5 mm) - same	VSSOP-10 - different	SOT-23-8 - different
Brand	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Output Type	Analog (instantaneous power)	Analog (instantaneous power)	Digital (I²C)	Digital (I²C)
Common-Mode Voltage Range	0 V to 26 V	0 V to 26 V	0 V to 36 V	0 V to 26 V
Supply Current (Max)	250 µA	250 µA	330 µA	1 mA
Programmable Gain	25, 50, 100, 200 V/V	25, 50, 100, 200 V/V	1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096	1, 2, 4, 8, 16, 32, 64, 128
Offset Voltage (Typ)	50 µV	50 µV	10 µV	50 µV
Operating Temperature Range	-40°C to +105°C	-40°C to +105°C	-40°C to +125°C	-40°C to +125°C

Key Differentiators

Analog instantaneous power output (vs INA226AIDGSR)
Low supply current of 250 µA (vs INA219AIDCNR)
SON-10 package with small footprint (vs INA226AIDGSR)

Design Notes

Use Kelvin connections to the shunt resistor to minimize parasitic resistance and ensure accurate current sensing. Place the shunt close to the INA223 input pins and route the sense traces as a differential pair. Avoid routing high-current traces near the sense lines to prevent noise coupling.

Bypass the VS pin with a 0.1 µF ceramic capacitor placed as close as possible to the pin. A 1 µF capacitor may be added for lower frequency noise. Ensure the supply voltage is within 2.7V to 5.5V and is clean, as noise on the supply can affect measurement accuracy.

Do not exceed the common-mode voltage range of 26V on the IN+ and IN- pins. Also, ensure the shunt resistor value is chosen so that the maximum shunt voltage does not exceed the input range of the device. The I²C address is set by the A0 pin; ensure it is tied to VS or GND to avoid address conflicts.