Overview
The AD8279BRZ-R7, produced by Analog Devices Inc., is a general-purpose difference amplifier designed for precision signal conditioning in power-critical applications. It is part of the AD8278 and AD8279 series, which are known for their high performance and low power consumption. These amplifiers are ideal for applications requiring high common-mode rejection ratio (CMRR) and wide bandwidth, making them suitable for various industrial, medical, and test and measurement applications.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Current | 300 μA to 350 μA | TA = −40°C to +85°C |
| Operating Voltage Range | ±2 V to ±18 V (dual supply), 2 V to 36 V (single supply) | |
| Common Mode Rejection Ratio (CMRR) | 80 dB minimum (dc to 20 kHz, G = ½, B Grade) | |
| Bandwidth | 1 MHz (G = ½) | |
| Input Offset Voltage (Vos) | 50 µV | |
| Slew Rate | 1.4 V/μs | |
| Output Voltage Noise | 1.4 μV p-p (0.1 Hz to 10 Hz), 90 nV/√Hz (at 1 kHz) | |
| Temperature Range | −40°C to +125°C | |
| Package | 14-lead SOIC |
Key Features
- Wide input range beyond supplies
- Rugged input overvoltage protection
- Low supply current: 300 μA to 350 μA 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
- Wide power supply range: ±2 V to ±18 V (dual supply), 2 V to 36 V (single supply)
Applications
- Voltage measurement and monitoring
- Current measurement and monitoring
- Instrumentation amplifier building block
- Portable, battery-powered equipment
- Test and measurement equipment
Q & A
- What is the primary function of the AD8279BRZ-R7?
The AD8279BRZ-R7 is a general-purpose difference amplifier used for precision signal conditioning in power-critical applications.
- What is the operating voltage range of the AD8279BRZ-R7?
The operating voltage range is ±2 V to ±18 V for dual supplies and 2 V to 36 V for single supplies.
- What is the common-mode rejection ratio (CMRR) of the AD8279BRZ-R7?
The CMRR is 80 dB minimum from dc to 20 kHz (G = ½, B Grade).
- What is the bandwidth of the AD8279BRZ-R7?
The bandwidth is 1 MHz (G = ½).
- What is the input offset voltage (Vos) of the AD8279BRZ-R7?
The input offset voltage is 50 µV.
- What is the slew rate of the AD8279BRZ-R7?
The slew rate is 1.4 V/μs.
- What are the typical applications of the AD8279BRZ-R7?
Typical applications include voltage and current measurement, instrumentation amplifier building blocks, portable battery-powered equipment, and test and measurement equipment.
- What is the temperature range for the AD8279BRZ-R7?
The operating temperature range is −40°C to +125°C.
- What package options are available for the AD8279BRZ-R7?
The AD8279BRZ-R7 is available in a 14-lead SOIC package.
- How much power does the AD8279BRZ-R7 consume?
The supply current is 300 μA to 350 μA per amplifier, and the power dissipation is 0.5 mW at VS = 2.5 V.
- Does the AD8279BRZ-R7 have overvoltage protection?
Yes, it has rugged input overvoltage protection.
