Overview
The AD8277BRZ-RL, produced by Analog Devices Inc., is a general-purpose, unity-gain difference amplifier designed for precision signal conditioning in power-critical applications. This amplifier is part of the AD8276/AD8277 family, known for their high performance and low power consumption. The AD8277BRZ-RL is ideal for applications requiring high accuracy and reliability, particularly in environments where power efficiency is crucial.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VS) | 2.0 | - | 36 | V |
| Dual Supply Range | ±2 | - | ±18 | V |
| Supply Current | - | 200 | - | μA |
| Input Voltage Range | -2(VS + 0.1) | - | 2(VS - 1.5) | V |
| Common-Mode Rejection Ratio (CMRR) | 86 | - | - | dB (dc to 10 kHz) |
| System Offset Voltage | - | 100 | 200 | μV |
| Average Temperature Coefficient | - | 0.5 | 2 | μV/°C |
| Bandwidth | - | 550 | - | kHz |
| Slew Rate | - | 1.1 | - | V/μs |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- Wide input range beyond supplies, allowing for high common-mode voltage range.
- Rugged input overvoltage protection to handle voltages beyond the supply rails.
- Low supply current of 200 μA maximum per channel, making it suitable for battery-operated and portable systems.
- Low power dissipation of 0.54 mW at VS = 2.7 V.
- High bandwidth of 550 kHz and enhanced slew rate of 1.1 V/μs.
- Exceptional common-mode rejection ratio (CMRR) of 86 dB minimum from dc to 10 kHz.
- Low gain drift of 1 ppm/°C maximum, ensuring high accuracy over a wide temperature range.
- Laser-trimmed on-chip resistors for precise gain matching and high CMRR.
Applications
- Voltage measurement and monitoring.
- Current measurement and monitoring.
- Differential output instrumentation amplifier applications.
- Portable, battery-powered equipment.
- Test and measurement equipment.
Q & A
- What is the primary function of the AD8277BRZ-RL?
The AD8277BRZ-RL is a general-purpose, unity-gain difference amplifier designed for precision signal conditioning.
- What is the supply voltage range for the AD8277BRZ-RL?
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 maximum supply current for the AD8277BRZ-RL?
The maximum supply current is 200 μA per channel.
- What is the common-mode rejection ratio (CMRR) of the AD8277BRZ-RL?
The CMRR is 86 dB minimum from dc to 10 kHz.
- What is the bandwidth of the AD8277BRZ-RL?
The bandwidth is 550 kHz.
- What is the slew rate of the AD8277BRZ-RL?
The slew rate is 1.1 V/μs.
- What is the operating temperature range for the AD8277BRZ-RL?
The operating temperature range is from -40°C to 85°C.
- What kind of protection does the AD8277BRZ-RL offer for its inputs?
The AD8277BRZ-RL offers rugged input overvoltage protection, allowing it to handle voltages beyond the supply rails.
- What are some typical applications for the AD8277BRZ-RL?
Typical applications include voltage and current measurement, differential output instrumentation, portable battery-powered equipment, and test and measurement equipment.
- How does the AD8277BRZ-RL achieve high accuracy and low gain drift?
The AD8277BRZ-RL achieves high accuracy and low gain drift through laser-trimmed on-chip resistors, ensuring precise gain matching and a low gain drift of 1 ppm/°C maximum.
