AD8226BRZ - Wide Supply Range In-Amp | Analog Devices
MPN: AD8226BRZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.32 | $4.32 |
| 10 | $3.89 | $38.90 |
| 100 | $3.24 | $324.00 |
| 500 | $2.91 | $1,455.00 |
| 1,000 | $2.59 | $2,590.00 |
Drop-in alternatives for AD8226BRZ — 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:
AD8227BRZ
✅ Drop-In✓ In Stock
$2.4 / Unit
View Datasheet →AD8226ARMZ
✅ Drop-In📋 Reference alternative (not in catalog)
INA826AID
✅ Drop-In📋 Reference alternative (not in catalog)
AD8223ARZ
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →AD620ARZ
✅ Drop-In✓ In Stock
$7.2 / Unit
View Datasheet →MCP6N11-005E/SN
✅ Drop-In📋 Reference alternative (not in catalog)
AD8226BRZ Maximum Ratings & Electrical Characteristics
| Amplifier Type | Instrumentation Amplifier |
| Number of Circuits | 1 |
| Gain Range | 1 to 1000 |
| Gain Setting Method | 1 External Resistor |
| Supply Voltage - Single | 2.2 V to 36 V |
| Supply Voltage - Dual | ±1.1 V to ±18 V |
| Rail-to-Rail Output | Yes |
| Input Voltage Range | Below ground to V+ - 1.2 V |
| Quiescent Current | 350 µA typical |
| CMRR (Minimum) | 80 dB at G=1 |
| Bandwidth | 1.5 MHz at G=1 |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-SOIC (SOIC-8) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD8226BRZ Pin Configuration
| Pin 1 | RG — Gain setting resistor connection |
| Pin 2 | -IN — Inverting input |
| Pin 3 | +IN — Non-inverting input |
| Pin 4 | V- — Negative supply |
| Pin 5 | REF — Reference voltage input |
| Pin 6 | OUT — Amplifier output |
| Pin 7 | V+ — Positive supply |
| Pin 8 | RG — Gain setting resistor connection |
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 is suitable for 6 applications: Industrial Process Control, Medical Instrumentation, Bridge Amplifier for Load Cells, Data Acquisition Systems, Automotive Sensor Interfaces, Portable Battery-Powered Devices.
Industrial Process Control
The AD8226BRZ is ideal for industrial process control where sensors like thermocouples and strain gauges produce small differential signals. Its wide supply range (up to 36V) allows direct connection to 24V industrial buses, and its high CMRR (80 dB min) rejects common-mode noise from motors and power lines. The gain set by a single resistor simplifies calibration, and the rail-to-rail output maximizes ADC input range. With a quiescent current of 350 µA, it is also suitable for loop-powered transmitters.
Recommended
Medical Instrumentation
In medical devices such as ECG and patient monitors, the AD8226BRZ provides precise amplification of bio-potential signals. Its low quiescent current (350 µA) extends battery life in portable monitors, and its wide supply range accommodates various battery configurations. The rail-to-rail output ensures full-scale signal to the ADC, while the gain range of 1 to 1000 allows adjustment for different sensor sensitivities. The device's -40°C to +125°C range ensures reliable operation in clinical environments.
Recommended
Bridge Amplifier for Load Cells
The AD8226BRZ is well-suited for load cell and bridge sensor amplification. Its high input impedance minimizes loading on the bridge, and its CMRR of 80 dB rejects common-mode voltage from the bridge excitation. The gain set by a single resistor allows easy scaling for different load cell sensitivities. The wide supply range supports both 5V and 12V excitation systems, and the rail-to-rail output provides maximum dynamic range to the ADC. The device's low offset voltage ensures accurate zero-point calibration.
Recommended
Data Acquisition Systems
In data acquisition systems, the AD8226BRZ conditions sensor signals before ADC conversion. Its bandwidth of 1.5 MHz at gain 1 supports high-speed sampling, while the gain range of 1 to 1000 allows amplification of weak signals. The rail-to-rail output ensures full-scale utilization of the ADC input range, and the low quiescent current reduces power dissipation in multi-channel systems. The device's wide supply range simplifies power supply design, and its small SOIC-8 package saves board space.
Recommended
Automotive Sensor Interfaces
The AD8226BRZ is suitable for automotive sensor interfaces such as pressure and temperature sensors. Its wide operating temperature range (-40°C to +125°C) meets automotive requirements, and its wide supply range (up to 36V) handles automotive battery voltage variations. The high CMRR rejects common-mode noise from the vehicle's electrical system, and the rail-to-rail output interfaces directly with automotive ADCs. The device's low quiescent current is beneficial for always-on sensor modules.
Recommended
Portable Battery-Powered Devices
For portable devices, the AD8226BRZ's low quiescent current (350 µA) and wide supply range (2.2V to 36V) make it ideal for battery-powered instrumentation. It can operate directly from a single lithium-ion cell or multiple alkaline cells, and its rail-to-rail output maximizes signal swing with limited supply headroom. The gain set by a single resistor simplifies design, and the small SOIC-8 package is suitable for space-constrained PCBs. The device's robust ESD protection ensures reliability in handheld devices.
Recommended
Recommended Products Summary
Engineering reference data for AD8226BRZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD8227BRZ | AD8226ARMZ | INA826AID | AD8223ARZ | AD620ARZ | MCP6N11-005E/SN |
|---|---|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-MSOP | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Analog Devices | Analog Devices | Microchip Technology |
| Gain Range | 1 to 1000 | 5 to 1000 | 1 to 1000 | 1 to 1000 | 5 to 1000 | 1 to 1000 | 5 to 1000 |
| Supply Voltage (Single) | 2.2V to 36V | 2.2V to 36V | 2.2V to 36V | 2.7V to 36V | 3V to 24V | 4.5V to 36V | 2.7V to 5.5V |
| Quiescent Current | 350 µA | 350 µA | 350 µA | 200 µA | 750 µA | 900 µA | 1 mA |
| CMRR (Min at G=1) | 80 dB | 80 dB | 80 dB | 90 dB | 80 dB | 80 dB | 80 dB |
| Bandwidth at G=1 | 1.5 MHz | 1.5 MHz | 1.5 MHz | 1 MHz | 1 MHz | 1 MHz | 1 MHz |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +85°C | -40°C to +85°C | -40°C to +125°C |
Key Differentiators
- Wide supply range up to 36V (vs MCP6N11-005E/SN)
- Gain range starts at 1 (vs AD8227BRZ)
- Lower quiescent current than AD620 (vs AD620ARZ)
Design Notes
Place the gain-setting resistor (RG) as close to the RG pins (pins 1 and 8) as possible to minimize parasitic capacitance and inductance, which can affect gain accuracy and bandwidth. Use a precision resistor with low temperature coefficient (e.g., 25 ppm/°C or better) to maintain gain stability over temperature. Keep the traces short and direct to the resistor.
Bypass the supply pins (V+ and V-) with 0.1 µF ceramic capacitors placed close to the device. For noisy environments, add a 10 µF electrolytic capacitor in parallel. The reference pin (REF) should be bypassed with a 0.1 µF capacitor to ground to filter noise and maintain stability. If the reference is driven by a low-impedance source, ensure it can source/sink the required current.
Do not exceed the absolute maximum supply voltage of 36V (single) or ±18V (dual). Ensure the input voltages stay within the specified input range (below ground to V+ - 1.2V) to avoid saturation and output distortion. When using high gain, be mindful of the gain-bandwidth product; at gain 1000, the bandwidth is reduced to approximately 1.5 kHz, which may limit AC applications.
Compliance Information
RoHS compliant per Analog Devices product page. No AEC-Q100 qualification indicated for this part.
