AD8226BRZ-RL7 - Wide Supply Range In-Amp | Analog Devices
MPN: AD8226BRZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.24 | $1,620.00 |
| 1,000 | $2.88 | $2,880.00 |
Drop-in alternatives for AD8226BRZ-RL7 — 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:
AD8226BRZ
✅ Drop-In✓ In Stock
$2.59 / Unit
View Datasheet →AD8227ARZ
✅ Drop-In✓ In Stock
$3.1 / Unit
View Datasheet →AD8223ARZ
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →INA826AID
✅ Drop-In📋 Reference alternative (not in catalog)
INA128UA
✅ Drop-In📋 Reference alternative (not in catalog)
AD8226BRZ-RL7 Maximum Ratings & Electrical Characteristics
| Amplifier Type | Instrumentation |
| Number of Circuits | 1 |
| Gain Range | 1 to 1000 |
| Gain Setting Method | 1 External Resistor |
| Supply Voltage - Single | 4.5 V to 36 V |
| Supply Voltage - Dual | ±2.25 V to ±18 V |
| Quiescent Current | 350 µA (typical) |
| Input Offset Voltage | 100 µV (max) |
| Input Bias Current | 25 nA (max) |
| Gain Error | 0.1% (max) |
| Gain Drift | 10 ppm/°C (max) |
| Output Type | Rail-to-Rail |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-SOIC (BRZ) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD8226BRZ-RL7 Pin Configuration
| Pin 1 | RG — Gain setting resistor |
| Pin 2 | -IN — Inverting input |
| Pin 3 | +IN — Non-inverting input |
| Pin 4 | V- — Negative supply |
| 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
AD8226BRZ-RL7 is suitable for 6 applications: Industrial Process Control, Bridge Amplifier for Load Cells, Medical Instrumentation, Data Acquisition Systems, Current Shunt Monitor, Portable Battery-Powered Instruments.
Industrial Process Control
The AD8226's wide supply range (up to 36V) and high common-mode rejection make it ideal for industrial process control, where it amplifies small differential signals from sensors like pressure transducers and temperature probes. Its rail-to-rail output allows direct interface to ADCs, and the low quiescent current (350 µA) minimizes power dissipation in 24V industrial loops. The gain set by a single resistor simplifies calibration, and the extended temperature range (-40°C to +125°C) ensures reliable operation in harsh environments.
Recommended
Bridge Amplifier for Load Cells
The AD8226 is well-suited for load cell bridge amplifiers, providing high input impedance and excellent common-mode rejection to accurately measure the small differential voltage from a Wheatstone bridge. With a gain range of 1 to 1000, it can amplify microvolt-level signals to levels suitable for ADC conversion. The wide input range allows it to handle bridge offsets, and the rail-to-rail output maximizes dynamic range. Its low offset voltage (100 µV max) ensures accurate static measurements, making it a reliable choice for weighing systems.
Recommended
Medical Instrumentation
In medical instrumentation, the AD8226 is used for ECG, EEG, and other bio-signal amplification, where low noise and high common-mode rejection are critical. Its low quiescent current (350 µA) is ideal for battery-powered portable monitors. The wide supply range accommodates various battery configurations, and the rail-to-rail output allows direct connection to microcontrollers with integrated ADCs. The device's small 8-SOIC package saves board space, and its extended temperature range ensures reliable operation in clinical environments.
Recommended
Data Acquisition Systems
The AD8226 is a key component in data acquisition systems, providing signal conditioning for a variety of sensors. Its wide input range and rail-to-rail output allow it to interface directly with ADCs, while the gain set by a single resistor enables flexible scaling. The low quiescent current and wide supply range make it suitable for both portable and bench-top systems. The device's high common-mode rejection ensures accurate measurement in noisy industrial environments, and its small package allows high-density designs.
Recommended
Current Shunt Monitor
The AD8226 can be used as a current shunt monitor, amplifying the small voltage drop across a sense resistor. Its wide input range allows it to handle common-mode voltages up to the supply rails, and its low offset voltage ensures accurate current measurement. The gain set by a single resistor allows easy scaling for different shunt values. The device's low quiescent current is beneficial for battery-powered monitoring systems, and its rail-to-rail output enables direct interface to ADCs or comparators.
Recommended
Portable Battery-Powered Instruments
The AD8226's low quiescent current (350 µA) and wide supply range (4.5V to 36V) make it ideal for portable battery-powered instruments. It can operate directly from a 9V battery or a 3.7V Li-ion cell with a boost converter. The rail-to-rail output maximizes signal swing, and the small 8-SOIC package saves space. The device's robust performance over temperature ensures reliable operation in field use, and its single-resistor gain setting simplifies design.
Recommended
Recommended Products Summary
Engineering reference data for AD8226BRZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD8226BRZ | AD8227ARZ | INA826AID |
|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Gain Range | 1 to 1000 | 1 to 1000 | Fixed 5 | 1 to 1000 |
| Supply Voltage (Single) | 4.5V to 36V | 4.5V to 36V | 4.5V to 36V | 3.3V to 36V |
| Quiescent Current | 350 µA | 350 µA | 350 µA | 200 µA |
| Input Offset Voltage (max) | 100 µV | 100 µV | 100 µV | 50 µV |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
Key Differentiators
- Wide supply range up to 36V (vs INA826AID)
- Low quiescent current of 350 µA (vs INA128UA)
- Pin-compatible with AD8227 (vs AD8227ARZ)
Design Notes
Place a 0.1 µF ceramic bypass capacitor close to each supply pin (V+ and V-) to ensure stability and reduce noise. Use a ground plane to minimize parasitic inductance. For best performance, keep the gain-setting resistor (RG) close to the RG pins and use a precision resistor with low temperature coefficient.
Ensure the reference pin (REF) is driven by a low-impedance source to set the output common-mode voltage correctly. If the REF pin is left floating, the output may saturate. Also, avoid exceeding the absolute maximum supply voltage of 40V, as this can damage the device.
The AD8226 dissipates minimal power due to its low quiescent current (350 µA). However, in high-temperature environments, ensure the junction temperature stays below 150°C. The 8-SOIC package has a thermal resistance of approximately 100°C/W, so for most applications, no additional heatsinking is required.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
