Overview
The AD8277BRZ-R7, produced by Analog Devices Inc., is a general-purpose, unity-gain difference amplifier designed for precision signal conditioning in power-critical applications. This component is part of the AD8276/AD8277 family, which is known for its high performance and low power consumption. The AD8277BRZ-R7 is particularly suited for applications requiring high common-mode rejection ratio (CMRR) and the ability 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 | 250 | μA |
| Power Dissipation | - | 0.54 | - | mW at VS = 2.7 V |
| Bandwidth | - | 550 | - | kHz |
| CMRR | 86 | - | - | dB (dc to 10 kHz) |
| System Offset Voltage | - | 100 | 200 | μV |
| Average Temperature Coefficient | - | 0.5 | 2 | μV/°C |
| Slew Rate | - | 1.1 | - | V/μs |
| Input Voltage Range | -2(VS + 0.1) | - | 2(VS - 1.5) | V |
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
- Laser-trimmed on-chip resistors for high accuracy and low drift
Applications
- Voltage measurement and monitoring
- Current measurement and monitoring
- Differential output instrumentation amplifier
- Portable, battery-powered equipment
- Test and measurement equipment
Q & A
- What is the primary function of the AD8277BRZ-R7?
The AD8277BRZ-R7 is a unity-gain difference amplifier designed for precision signal conditioning in power-critical applications.
- What is the typical supply current of the AD8277BRZ-R7?
The typical supply current is 200 μA per channel.
- What is the common-mode rejection ratio (CMRR) of the AD8277BRZ-R7?
The CMRR is 86 dB minimum (dc to 10 kHz).
- What is the bandwidth of the AD8277BRZ-R7?
The bandwidth is 550 kHz.
- What is the slew rate of the AD8277BRZ-R7?
The slew rate is 1.1 V/μs.
- What is the input voltage range of the AD8277BRZ-R7?
The input voltage range is from -2(VS + 0.1) to 2(VS - 1.5) volts.
- What are the typical applications of the AD8277BRZ-R7?
Typical applications include voltage and current measurement, differential output instrumentation amplifiers, portable battery-powered equipment, and test and measurement equipment.
- What is the operating temperature range of the AD8277BRZ-R7?
The operating temperature range is from -40°C to +85°C.
- What is the power supply range for the AD8277BRZ-R7?
The power supply range is from 2.0 V to 36 V for single supply and ±2 V to ±18 V for dual supplies.
- How are the on-chip resistors in the AD8277BRZ-R7 trimmed?
The on-chip resistors are laser-trimmed for high accuracy and low drift.
