Overview
The AD8279BRZ from Analog Devices Inc. is a low power, wide supply range, and low cost difference amplifier. It is designed for precision signal conditioning in power-critical applications that require high performance and low power consumption. This amplifier is particularly suited for use in portable instruments, medical devices, and industrial control systems where space savings and power efficiency are crucial.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 |
| Gain | 0.5 or 2 |
| Supply Current per Amplifier | 200 μA (maximum) to 350 μA (over temperature range) |
| Power Supply Range | Single supply: 2 V to 36 V, Dual supplies: ±2 V to ±18 V |
| Common-Mode Rejection Ratio (CMRR) | 80 dB minimum, dc to 20 kHz (G = ½, B Grade) |
| Offset Voltage Drift | ±1 μV/°C maximum (B Grade) |
| Gain Drift | 1 ppm/°C maximum (B Grade) |
| Slew Rate | 1.4 V/μs |
| Bandwidth | 1 MHz (G = ½) |
| Operating Temperature Range | -40°C to 85°C |
| Package | 8-lead SOIC, 14-lead SOIC, and 8-lead MSOP |
Key Features
- Wide input range beyond supplies
- Rugged input overvoltage protection
- Low supply current: 200 μA maximum per amplifier
- Low power dissipation: 0.5 mW at VS = 2.5 V
- High bandwidth: 1 MHz (G = ½)
- High CMRR: 80 dB minimum, dc to 20 kHz (G = ½, B Grade)
- Low offset voltage drift: ±1 μV/°C maximum (B Grade)
- Low gain drift: 1 ppm/°C maximum (B Grade)
- Enhanced slew rate: 1.4 V/μs
- Compact 14-Lead SOIC package for easy surface mount assembly
Applications
- Portable instruments
- Medical devices
- Industrial control systems
- Voltage measurement and monitoring
- Current measurement and monitoring
- Differential output instrumentation amplifier
- Test and measurement equipment
Q & A
- Q: What is the gain range of the AD8279BRZ?
A: The AD8279BRZ has a gain range of 0.5 or 2.
- Q: What is the operating temperature range of the AD8279BRZ?
A: The operating temperature range is -40°C to 85°C.
- Q: What is the typical slew rate of the AD8279BRZ?
A: The typical slew rate is 1.4 V/μs.
- Q: What is the common-mode rejection ratio (CMRR) of the AD8279BRZ?
A: The CMRR is 80 dB minimum, dc to 20 kHz (G = ½, B Grade).
- Q: What are the package options for the AD8279BRZ?
A: The package options include 8-lead SOIC, 14-lead SOIC, and 8-lead MSOP.
- Q: What is the supply current per amplifier for the AD8279BRZ?
A: The supply current per amplifier is 200 μA (maximum) to 350 μA (over temperature range).
- Q: What is the bandwidth of the AD8279BRZ?
A: The bandwidth is 1 MHz (G = ½).
- Q: Is the AD8279BRZ suitable for battery-powered applications?
A: Yes, it is suitable due to its low power consumption.
- Q: What kind of input protection does the AD8279BRZ offer?
A: It offers rugged input overvoltage protection.
- Q: Where can I find detailed information about the AD8279BRZ, such as application notes and factory information?
A: You can find detailed information on the Analog Devices website or through authorized distributors like Ovaga Technologies.
