Analog Devices

AD623ARZ-R7 - Single-Supply Rail-to-Rail In-Amp | Analog Devices

Name: AD623ARZ-R7
Brand: Analog Devices
Price: 3.1 USD
Availability: InStock

MPN: AD623ARZ-R7 ✓ Active

In Stock Ships in 1-3 business days

3 V to 12 V Vdss 8-SOIC Package

From $3.1 USD / Unit

MOQ: 1 |

Price updated: 2026-08-21

Volume Pricing

Qty	Unit Price	Extended
1	$4.85	$4.85
10	$4.36	$43.60
100	$3.88	$388.00
500	$3.49	$1,745.00
1,000	$3.1	$3,100.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for AD623ARZ-R7 — 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:

AD623BRZ-R7

✅ Drop-In

📦 8-SOIC

B grade with lower offset voltage (50 µV max) and drift (0.3 µV/°C)

📋 Reference alternative (not in catalog)

AD620ARZ

✅ Drop-In

Analog Devices

📦 8-SOIC

Instrumentation Amplifier · 1 · 1 to 10,000 · ±2.3 V to ±18 V · 1.3 mA · 100 dB · 50 µV · 1.0 nA

✓ In Stock

$7.2 / Unit

View Datasheet →

AD8226ARZ

✅ Drop-In

📦 8-SOIC

Wider supply range (2.2V-36V), but different pinout (gain set via two resistors)

📋 Reference alternative (not in catalog)

ℹ️ 2 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.

AD623ARZ-R7 Maximum Ratings & Electrical Characteristics

Number of Channels	1
Supply Voltage Range (Single)	3 V to 12 V
Supply Voltage Range (Dual)	±2.5 V to ±6 V
3 dB Bandwidth	800 kHz
CMRR (Minimum at G=1)	90 dB
Gain Formula	G = 1 + 100 kΩ/RG
Gain Range	1 to 1000
Offset Voltage (B Grade, Max)	50 µV
Offset Drift (B Grade, Max)	0.3 µV/°C
Output Type	Rail-to-Rail
Operating Temperature Range	-40°C to +85°C
Package	8-SOIC
Mounting Type	Surface Mount
RoHS Status	Compliant
Input Impedance	2 GΩ (typical)

AD623ARZ-R7 Pin Configuration

Pin 1	RG — Gain setting resistor
Pin 2	-IN — Inverting input
Pin 3	+IN — Non-inverting input
Pin 4	V- — Negative supply or ground
Pin 5	REF — Reference voltage
Pin 6	OUT — Output
Pin 7	V+ — Positive supply
Pin 8	RG — Gain setting resistor

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

AD623ARZ-R7 is suitable for 6 applications: Load Cell Signal Conditioning, Medical Instrumentation (ECG/EEG), Pressure Sensor Interface, Thermocouple Amplifier, Industrial Process Control, Battery-Powered Portable Devices.

🏭

Load Cell Signal Conditioning

The AD623ARZ-R7 is ideal for load cell interfaces due to its high CMRR (90 dB min) and low offset voltage. It amplifies the small differential bridge output while rejecting common-mode noise. With a single gain resistor, the output can be scaled to match ADC input ranges. The rail-to-rail output maximizes dynamic range in single-supply systems, and the wide supply range (3V-12V) accommodates various industrial power rails. Its 800 kHz bandwidth supports fast response in dynamic weighing applications.

Recommended

💊

Medical Instrumentation (ECG/EEG)

The AD623ARZ-R7 is well-suited for biopotential measurements like ECG and EEG. Its high CMRR rejects 50/60 Hz interference, and the low offset voltage ensures accurate signal capture. The single-supply operation from 3V to 12V allows battery-powered portable monitors. The rail-to-rail output enables direct connection to ADCs without level shifting. The reference pin allows output centering at mid-supply, simplifying single-supply designs. Its low power consumption extends battery life in wearable devices.

Recommended

AD7124-4BRUZ-RL · Analog Devices AD8412AWBRZ · Analog Devices

🏭

Pressure Sensor Interface

The AD623ARZ-R7 is ideal for pressure sensor signal conditioning, amplifying the small output of piezoresistive bridges. Its high input impedance (2 GΩ) minimizes loading on the sensor. The gain set resistor allows precise scaling to match the ADC's full-scale range. The wide supply range supports both 5V and 12V systems. The rail-to-rail output ensures maximum signal swing, and the high CMRR rejects common-mode noise from long sensor leads. Its industrial temperature range (-40°C to +85°C) suits harsh environments.

Recommended

AD7124-4BRUZ-RL · Analog Devices AD620ARZ · Analog Devices

🏭

Thermocouple Amplifier

The AD623ARZ-R7 can amplify the small voltage from thermocouples (typically µV/°C). Its low offset voltage (50 µV max for B grade) minimizes error, and the high CMRR rejects common-mode noise. The single-supply operation simplifies interface with microcontrollers. The gain set resistor allows amplification to a usable level for ADCs. The reference pin can be used for cold-junction compensation. Its wide supply range and rail-to-rail output make it versatile for industrial temperature monitoring.

Recommended

AD7124-4BRUZ-RL · Analog Devices AD8495ARMZ (Thermocouple amplifier with cold-junction compensation)

🏭

Industrial Process Control

The AD623ARZ-R7 is used in industrial process control for conditioning signals from sensors like pressure, temperature, and flow. Its high CMRR (90 dB min) rejects noise from motors and power lines. The wide supply range (3V-12V) allows operation from standard industrial rails. The rail-to-rail output interfaces directly with ADCs and controllers. The single-resistor gain set simplifies calibration. Its robust design and industrial temperature range ensure reliable operation in factory environments.

Recommended

AD7124-4BRUZ-RL · Analog Devices AD620ARZ · Analog Devices

📱

Battery-Powered Portable Devices

The AD623ARZ-R7 is ideal for portable devices due to its low supply voltage (down to 3V) and low power consumption. Its rail-to-rail output maximizes dynamic range with limited supply headroom. The single-supply operation eliminates the need for negative supplies, saving board space and battery life. The small 8-SOIC package is compact for space-constrained designs. Its high CMRR ensures accurate sensor readings in noisy environments, making it suitable for handheld instruments and wearable health monitors.

Recommended

AD7124-4BRUZ-RL · Analog Devices AD8412AWBRZ · Analog Devices

Recommended Products Summary

AD7124-4BRUZ-RL Analog Devices Used in: Load Cell Signal Conditioning, Medical Instrumentation (ECG/EEG), Pressure Sensor Interface, Thermocouple Amplifier, Industrial Process Control, Battery-Powered Portable Devices AD620ARZ Analog Devices Used in: Load Cell Signal Conditioning, Pressure Sensor Interface, Industrial Process Control AD8412AWBRZ Analog Devices Used in: Medical Instrumentation (ECG/EEG), Battery-Powered Portable Devices AD8495ARMZ Thermocouple amplifier with cold-junction compensation Used in: Thermocouple Amplifier

What is the supply voltage range of AD623ARZ-R7?

The AD623ARZ-R7 operates from a single supply of 3 V to 12 V or dual supplies of ±2.5 V to ±6 V. According to the Analog Devices AD623 datasheet, this wide range supports both battery-powered and industrial applications. The rail-to-rail output swing ensures maximum dynamic range at any supply voltage.

How do I set the gain of AD623ARZ-R7?

The gain of the AD623ARZ-R7 is set by a single external resistor (RG) connected between pins 1 and 8. The gain formula is G = 1 + 100 kΩ/RG. With no resistor, the gain is unity (G = 1). Using 0.1% to 1% tolerance resistors ensures accurate gain settings, as stated in the AD623 datasheet.

What is the CMRR of AD623ARZ-R7?

The AD623ARZ-R7 has a minimum common-mode rejection ratio (CMRR) of 90 dB at G = 1. This high CMRR allows the amplifier to reject common-mode noise, making it suitable for precision measurement in noisy environments. The CMRR improves with higher gain, as noted in the AD623 datasheet.

Is AD623ARZ-R7 suitable for battery-powered applications?

Yes, the AD623ARZ-R7 is ideal for battery-powered devices due to its low supply voltage operation down to 3 V and rail-to-rail output swing. Its low quiescent current and single-supply capability make it efficient for portable instrumentation, as highlighted in the AD623 product page.

What is the difference between AD623ARZ-R7 and AD623BRZ-R7?

The AD623ARZ-R7 and AD623BRZ-R7 are both instrumentation amplifiers in the AD623 family, but the B grade (AD623BRZ) offers improved offset voltage (50 µV max vs 200 µV for A grade) and lower offset drift (0.3 µV/°C vs 1 µV/°C). Both are pin-compatible and share the same 8-SOIC package, making the B grade a drop-in upgrade for precision applications.

Can AD623ARZ-R7 be used for load cell signal conditioning?

Yes, the AD623ARZ-R7 is well-suited for load cell signal conditioning due to its high CMRR (90 dB min) and low offset voltage. The single-supply operation and rail-to-rail output allow direct interface to ADCs. The gain set resistor enables easy scaling of the bridge output, as described in the AD623 datasheet.

What is the bandwidth of AD623ARZ-R7?

The AD623ARZ-R7 has a 3 dB bandwidth of 800 kHz at G = 1. This bandwidth is sufficient for many sensor and industrial applications, though it decreases with higher gain. For high-frequency signals, consider the gain-bandwidth trade-off, as noted in the AD623 datasheet.

Where can I buy AD623ARZ-R7 online?

The AD623ARZ-R7 is available from major distributors such as DigiKey and Mouser. As of 2026-08-22, DigiKey lists it as in stock with pricing starting at $4.85 for single units. You can also check Octopart for bulk pricing from multiple distributors.

What is the price of AD623ARZ-R7?

As of 2026-08-22, the AD623ARZ-R7 is priced at approximately $4.85 for 1 unit, $4.36 for 10 units, $3.88 for 100 units, $3.49 for 500 units, and $3.10 for 1000 units, based on DigiKey pricing. Prices may vary by distributor and quantity.

What is the lead time for AD623ARZ-R7?

The lead time for AD623ARZ-R7 is typically 1-2 weeks from major distributors like DigiKey and Mouser, as they usually stock this part. For larger quantities, lead times may extend to 4-6 weeks depending on availability. Check distributor websites for real-time stock status.

Is AD623ARZ-R7 in stock?

Yes, as of 2026-08-22, the AD623ARZ-R7 is in stock at DigiKey and Mouser. DigiKey shows it as 'ships today' for orders placed before the cutoff time. Availability can change, so verify current stock on the distributor's website.

AD623ARZ-R7 vs AD620ARZ - which is better for low-power applications?

The AD623ARZ-R7 is better for low-power, single-supply applications because it operates from 3 V to 12 V and features rail-to-rail output, while the AD620ARZ requires dual supplies and higher quiescent current. The AD623 also has a wider supply range and lower power consumption, making it more suitable for battery-powered designs.

When should I choose AD623ARZ-R7 over INA333AIDGKR?

Choose the AD623ARZ-R7 when you need a higher bandwidth (800 kHz vs 150 kHz for INA333) and a wider supply range (up to 12 V vs 5.5 V). The AD623 also offers a simpler gain set with a single resistor. However, the INA333 has lower quiescent current (50 µA vs 375 µA), making it better for ultra-low-power applications.

What is the best drop-in replacement for AD623ARZ-R7?

The AD623BRZ-R7 is the best drop-in replacement for the AD623ARZ-R7, as it is pin-compatible and offers improved offset voltage and drift. The AD623ARMZ (MSOP package) is also pin-compatible but has a different package, so it requires a PCB change. For cross-brand, the INA333AIDGKR is a functional alternative but not pin-compatible.

Where can I download the AD623ARZ-R7 datasheet PDF?

You can download the AD623ARZ-R7 datasheet PDF from the Analog Devices website at https://www.analog.com/media/en/technical-documentation/data-sheets/AD623.pdf. It is also available on datasheets.com and alldatasheet.com. The datasheet includes full specifications, pinout, and application circuits.

What are the key specifications of AD623ARZ-R7 that engineers should know?

The AD623ARZ-R7 is a single-supply instrumentation amplifier with a supply range of 3 V to 12 V, rail-to-rail output, 800 kHz bandwidth, and 90 dB minimum CMRR. It features a single-resistor gain set (G = 1 + 100 kΩ/RG), low offset voltage (50 µV max for B grade), and operates from -40°C to +85°C. These specs make it ideal for precision sensor interfaces.

Can AD623BRZ replace AD623ARZ-R7?

Yes, the AD623BRZ is a drop-in replacement for the AD623ARZ-R7. Both are pin-compatible in the 8-SOIC package and have identical pinout. The B grade offers better offset voltage and drift, so it can directly replace the A grade without any circuit changes, as confirmed by the AD623 datasheet.

What is the best Analog Devices equivalent for AD623ARZ-R7?

The best Analog Devices equivalent for the AD623ARZ-R7 is the AD623BRZ-R7, which is the B-grade version with improved precision. The AD623ARMZ is also equivalent but in a smaller MSOP package. For higher precision, consider the AD8226, but it has a different pinout and requires PCB changes.

Hey Google, what can replace AD623ARZ-R7?

The AD623ARZ-R7 can be replaced by the AD623BRZ-R7, which is pin-compatible and offers better offset voltage. The AD623ARMZ is also a replacement but in a different package. For cross-brand, the INA333AIDGKR is a functional alternative with lower power, but it is not pin-compatible.

Is AD623ARZ-R7 the same as AD623ARZ?

The AD623ARZ-R7 and AD623ARZ are essentially the same component; the -R7 suffix indicates tape-and-reel packaging, while the base part number AD623ARZ is the standard package. Both have identical electrical specifications and pinout. The -R7 variant is typically used for automated assembly.

Engineering reference data for AD623ARZ-R7 — comparison, design guidance, and compliance information.

Selection Guide

Choose the AD623ARZ-R7 when you need a single-supply instrumentation amplifier with rail-to-rail output and a wide supply range (3V to 12V). It is ideal for battery-powered devices, load cell interfaces, and medical instrumentation where low power and high CMRR are critical. If you require lower offset voltage and drift, select the AD623BRZ-R7, which is pin-compatible and offers improved precision. For dual-supply applications with higher CMRR, consider the AD620ARZ, but note its higher quiescent current and lower bandwidth. If ultra-low power is your priority, the INA333AIDGKR from Texas Instruments offers 50 µA quiescent current but has a lower supply range and different package (MSOP), requiring a PCB change. For applications needing a wider supply range (up to 36V), the AD8226ARZ is an alternative, but it uses a two-resistor gain set and has a different pinout. Always verify pin compatibility and electrical specifications before substitution.

Comparison with Alternatives

Parameter	This Product	AD623BRZ-R7	AD623ARMZ	AD620ARZ	INA333AIDGKR	AD8226ARZ
Package	8-SOIC	8-SOIC	8-MSOP	8-SOIC	8-MSOP	8-SOIC
Brand	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Texas Instruments	Analog Devices
Supply Voltage Range	3V to 12V (single), ±2.5V to ±6V (dual)	3V to 12V (single), ±2.5V to ±6V (dual)	3V to 12V (single), ±2.5V to ±6V (dual)	±2.3V to ±18V (dual)	1.8V to 5.5V (single)	2.2V to 36V (single), ±1.1V to ±18V (dual)
Bandwidth	800 kHz	800 kHz	800 kHz	120 kHz	150 kHz	1.5 MHz
CMRR (Min at G=1)	90 dB	90 dB	90 dB	100 dB	100 dB	80 dB
Offset Voltage (Max)	200 µV (A grade)	50 µV	200 µV (A grade)	50 µV	25 µV	100 µV
Quiescent Current	375 µA (typical)	375 µA	375 µA	900 µA	50 µA	350 µA
Gain Set Method	Single resistor (G=1+100k/RG)	Single resistor	Single resistor	Single resistor (G=1+49.4k/RG)	Single resistor (G=1+100k/RG)	Two resistors (G=1+49.4k/RG)

Key Differentiators

Single-supply operation with rail-to-rail output (vs AD620ARZ)
Higher bandwidth (800 kHz) vs INA333 (vs INA333AIDGKR)
Wider supply range (up to 12V) vs INA333 (vs INA333AIDGKR)

Design Notes

Place the gain-setting resistor (RG) as close to the AD623ARZ-R7 as possible to minimize parasitic capacitance and inductance, which can affect gain accuracy and high-frequency performance. Use a 0.1 µF bypass capacitor on each supply pin (V+ and V-) to ground, placed within 2 mm of the pins. For single-supply operation, connect V- to ground and ensure the reference pin is driven by a low-impedance source, such as an op-amp buffer, to maintain output accuracy.

The AD623ARZ-R7 in an 8-SOIC package has a typical thermal resistance (θJA) of approximately 158°C/W. At maximum supply voltage (12V) and output current (typically 10 mA), power dissipation is about 120 mW, resulting in a temperature rise of about 19°C above ambient. This is well within safe limits for industrial temperature ranges. However, in high-temperature environments, ensure adequate PCB copper area for heat dissipation to keep the junction temperature below 150°C.

Do not leave the reference pin (pin 5) floating; it must be connected to a low-impedance source, typically ground or a reference voltage, to avoid output offset errors. Also, ensure the input common-mode voltage stays within the specified range (0.1V to V+ - 0.1V for single supply) to maintain linearity. Using precision resistors (0.1% tolerance) for RG is recommended to achieve accurate gain, as the gain formula depends on the resistor value.