Overview
The AD8278ARZ-RL, produced by Analog Devices Inc., is a low power, wide supply range, low cost difference amplifier. It is designed for precision signal conditioning in power-critical applications that require both high performance and low power consumption. The AD8278 provides exceptional common-mode rejection ratio (CMRR) and high bandwidth, making it suitable for amplifying input signals that are well beyond the supply rails.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Current | 200 | - | 250 | μA |
| Operating Voltage Range | 2.0 | - | 36 | V |
| Operating Temperature Range | -40 | - | 125 | °C |
| Bandwidth (G = ½) | 1 | - | - | MHz |
| CMRR (G = ½, B Grade) | 80 | - | - | dB (dc to 20 kHz) |
| Offset Voltage Drift | - | - | ±1 | μV/°C |
| Gain Drift | - | - | 1 | ppm/°C |
| Slew Rate | - | - | 1.4 | V/μs |
| Output Swing (RL = 10 kΩ) | -VS + 0.1 | - | +VS - 0.15 | V |
| Short-Circuit Current Limit | ±10 | - | ±10 | mA |
| Capacitive Load Drive | 200 | - | 200 | pF |
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, 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: Single supply (2 V to 36 V), Dual supplies (±2 V to ±18 V)
- Available in 8-lead SOIC, 14-lead SOIC, and 8-lead MSOP packages
Applications
- Voltage measurement and monitoring
- Current measurement and monitoring
- Instrumentation amplifier building block
- Portable, battery-powered equipment
- Test and measurement
Q & A
- What is the primary function of the AD8278ARZ-RL?
The AD8278ARZ-RL is a low power, wide supply range, low cost difference amplifier designed for precision signal conditioning.
- What is the typical supply current of the AD8278ARZ-RL?
The typical supply current is 200 μA.
- What is the operating voltage range of the AD8278ARZ-RL?
The operating voltage range is from 2 V to 36 V for single supply and ±2 V to ±18 V for dual supplies.
- What is the CMRR of the AD8278ARZ-RL?
The CMRR is 80 dB minimum (dc to 20 kHz, B Grade).
- What is the slew rate of the AD8278ARZ-RL?
The slew rate is 1.4 V/μs.
- What are the typical applications of the AD8278ARZ-RL?
Typical applications include voltage and current measurement, instrumentation amplifier building blocks, portable battery-powered equipment, and test and measurement.
- What is the bandwidth of the AD8278ARZ-RL?
The bandwidth is 1 MHz (G = ½).
- What is the output swing of the AD8278ARZ-RL?
The output swing is from -VS + 0.1 V to +VS - 0.15 V (RL = 10 kΩ).
- What is the short-circuit current limit of the AD8278ARZ-RL?
The short-circuit current limit is ±10 mA.
- What is the capacitive load drive capability of the AD8278ARZ-RL?
The capacitive load drive capability is 200 pF.
- In what packages is the AD8278ARZ-RL available?
The AD8278ARZ-RL is available in 8-lead SOIC, 14-lead SOIC, and 8-lead MSOP packages.
