Overview
The AD8277ARZ, produced by Analog Devices Inc., is a general-purpose, unity-gain difference amplifier designed for precision signal conditioning in power-critical applications. It offers high performance and low power consumption, making it ideal for various precision measurement and monitoring tasks. The amplifier features exceptional common-mode rejection ratio (CMRR) and high bandwidth, allowing it to amplify signals well beyond the supply rails.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VS) | 2.0 | - | 36 | V (Single Supply), ±2 to ±18 V (Dual Supplies) |
| Supply Current | - | - | 200 | μA per channel |
| Common-Mode Rejection Ratio (CMRR) | 86 | - | - | dB (dc to 10 kHz) |
| System Offset Voltage | - | 100 | 200 | μV |
| Average Temperature Coefficient of Offset Voltage | - | 0.5 | 2 | μV/°C |
| Bandwidth | - | - | 550 | kHz |
| Input Voltage Range | -2(VS + 0.1) | - | 2(VS - 1.5) | V |
| Slew Rate | - | - | 1.1 | V/μs |
Key Features
- Wide input range beyond supplies
- Rugged input overvoltage protection
- Low supply current: 200 μA maximum per channel
- Low power dissipation: 0.54 mW at VS = 2.7 V
- High CMRR: 86 dB minimum, dc to 10 kHz
- Low gain drift: 1 ppm/°C maximum
- Enhanced slew rate: 1.1 V/μs
- Wide power supply range: Single supply 2.0 V to 36 V, Dual supplies ±2 V to ±18 V
Applications
- Voltage measurement and monitoring
- Current measurement and monitoring
- Differential output instrumentation amplifier
- Portable, battery-powered equipment
- Test and measurement
Q & A
- What is the primary function of the AD8277ARZ?
The AD8277ARZ is a general-purpose, unity-gain difference amplifier designed for precision signal conditioning.
- What is the supply voltage range for the AD8277ARZ?
The supply voltage range is from 2.0 V to 36 V for single supply and ±2 V to ±18 V for dual supplies.
- What is the common-mode rejection ratio (CMRR) of the AD8277ARZ?
The CMRR is 86 dB minimum from dc to 10 kHz.
- What is the maximum supply current per channel for the AD8277ARZ?
The maximum supply current per channel is 200 μA.
- What is the bandwidth of the AD8277ARZ?
The bandwidth is 550 kHz.
- What is the slew rate of the AD8277ARZ?
The slew rate is 1.1 V/μs.
- What are some typical applications of the AD8277ARZ?
Typical applications include voltage and current measurement, differential output instrumentation, portable battery-powered equipment, and test and measurement.
- How does the AD8277ARZ protect against overvoltage?
The AD8277ARZ features rugged input overvoltage protection.
- What is the input voltage range for the AD8277ARZ?
The input voltage range is from -2(VS + 0.1) to 2(VS - 1.5) volts.
- What is the average temperature coefficient of offset voltage for the AD8277ARZ?
The average temperature coefficient of offset voltage is 0.5 to 2 μV/°C.
