Overview
The AD8226ARMZ, produced by Analog Devices Inc., is a low-cost, wide supply range instrumentation amplifier. It is designed to offer high flexibility and reliability in various industrial and measurement applications. The amplifier requires only one external resistor to set any gain between 1 and 1000, making it highly versatile. It features a wide input range and rail-to-rail output, allowing the signal to make full use of the supply rails. This amplifier is particularly useful for amplifying small signals near ground without requiring dual supplies.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Gain Range | 1 | - | 1000 | V/V |
| Single Supply Voltage | 2.2 | - | 36 | V |
| Dual Supply Voltage | ±1.35 | - | ±18 | V |
| Bandwidth (G = 1) | 1.5 | - | - | MHz |
| CMRR (G = 1) | 90 | - | - | dB |
| Input Noise | 22 | - | - | nV/√Hz |
| Typical Supply Current | 350 | - | - | μA |
| Operating Temperature | -40 | - | 125 | °C |
| Package | - | - | - | 8-lead MSOP, 8-lead SOIC |
Key Features
- Gain set with one external resistor, allowing gain settings 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 voltage can go below ground, and inputs are protected beyond the supply rails.
- Rail-to-rail output, enabling full use of the supply rails.
- High CMRR (Common Mode Rejection Ratio) of 90 dB minimum for BR models at G = 1.
- Low input noise of 22 nV/√Hz.
- Compact 8-lead MSOP and SOIC packages, suitable for space-constrained designs.
- Operates over a wide temperature range from -40°C to +125°C.
Applications
The AD8226 is ideal for various industrial and measurement applications, particularly in multichannel, space-constrained environments. It is well-suited for:
- Industrial automation and control systems.
- Medical devices requiring precise signal amplification.
- Test and measurement equipment.
- Tightly packed, zero airflow designs due to its high temperature rating and compact packaging.
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 are the power supply voltage ranges for the AD8226?
The AD8226 can operate on single supplies from 2.2 V to 36 V and dual supplies from ±1.35 V to ±18 V.
- What is the bandwidth of the AD8226 at a gain of 1?
The bandwidth of the AD8226 at a gain of 1 is 1.5 MHz.
- What is the CMRR of the AD8226 at a gain of 1?
The CMRR (Common Mode Rejection Ratio) of the AD8226 at a gain of 1 is 90 dB minimum for BR models.
- What is the input noise of the AD8226?
The input noise of the AD8226 is 22 nV/√Hz.
- What are the typical supply current and operating temperature range of the AD8226?
The typical supply current is 350 μA, and the operating temperature range is from -40°C to +125°C.
- In what packages is the AD8226 available?
The AD8226 is available in 8-lead MSOP and 8-lead SOIC packages.
- Can the AD8226 handle input voltages beyond the supply rails?
- What are some typical applications of the AD8226?
The AD8226 is typically used in industrial automation, medical devices, test and measurement equipment, and other space-constrained industrial applications.
- Is there a similar device with a different gain range?
