Overview
The AD8226ARZ-RL, produced by Analog Devices Inc., is a low-cost, wide supply range instrumentation amplifier. It is designed to be highly versatile, requiring only one external resistor to set any gain between 1 and 1000. This amplifier is suitable for a variety of signal voltages and operates on a wide power supply range, from ±1.35 V to ±18 V for dual supplies and 2.2 V to 36 V for single supply. The AD8226 is particularly useful in applications where small signals near ground need to be amplified without requiring dual supplies.
The device features robust inputs that can handle voltages beyond the supply rails, making it ideal for connecting to real-world sensors. It is also fully specified for operation from −40°C to +125°C, making it suitable for tightly packed, zero airflow designs.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Gain Range | - | 1 | - | 1000 | V/V |
| Power Supply Range (Single) | - | 2.2 V | - | 36 V | V |
| Power Supply Range (Dual) | - | ±1.35 V | - | ±18 V | V |
| Bandwidth (G = 1) | - | - | 1.5 MHz | - | MHz |
| CMRR (G = 1) | - | 86 dB | 90 dB | - | dB |
| Input Noise | - | - | 22 nV/√Hz | - | nV/√Hz |
| Supply Current | - | - | 350 μA | - | μA |
| Operating Temperature | - | −40°C | - | +125°C | °C |
| Package | - | - | - | 8-lead SOIC, 8-lead MSOP | - |
Key Features
- Gain settable with one external resistor from 1 to 1000.
- Wide power supply range: single supply from 2.2 V to 36 V and dual supplies from ±1.35 V to ±18 V.
- Input range includes the ability to go below the negative supply, allowing small signals near ground to be amplified without dual supplies.
- Robust inputs designed to handle voltages beyond the supply rails, e.g., ±35 V with a ±5 V supply.
- High common-mode rejection ratio (CMRR) of 90 dB minimum for BR models at G = 1.
- Low input noise of 22 nV/√Hz.
- Typical supply current of 350 μA.
- Operational temperature range from −40°C to +125°C.
- Available in 8-lead SOIC and MSOP packages, suitable for multichannel, space-constrained applications.
Applications
- Multichannel, space-constrained industrial applications.
- Industrial process controls.
- Bridge amplifiers.
- Precision data acquisition systems.
- Medical instrumentation.
- Strain gages and transducer interfaces.
Q & A
- What is the gain range of the AD8226?
The gain range of the AD8226 is from 1 to 1000, settable with one external resistor.
- What is the power supply range for the AD8226?
The AD8226 operates on a single supply from 2.2 V to 36 V and dual supplies from ±1.35 V to ±18 V.
- Can the AD8226 handle input voltages beyond the supply rails?
- What is the common-mode rejection ratio (CMRR) of the AD8226?
The CMRR of the AD8226 is 90 dB minimum for BR models at G = 1.
- What is the input noise of the AD8226?
The input noise of the AD8226 is 22 nV/√Hz.
- What is the typical supply current of the AD8226?
The typical supply current of the AD8226 is 350 μA.
- What is the operating temperature range of the AD8226?
The operating temperature range of the AD8226 is from −40°C to +125°C.
- In what packages is the AD8226 available?
The AD8226 is available in 8-lead SOIC and MSOP packages.
- What are some typical applications of the AD8226?
Typical applications include multichannel industrial processes, precision data acquisition, medical instrumentation, and transducer interfaces.
- Is the AD8226 suitable for space-constrained designs?
