Overview
The AD8551ARZ is a zero-drift, single-supply operational amplifier manufactured by Analog Devices Inc. This device is part of the AD8551/AD8552/AD8554 family, known for its high accuracy and low cost. The AD8551ARZ features rail-to-rail input and output swings, making it suitable for a wide range of applications where precision is critical. It operates from a single supply voltage of 2.7 V to 5.5 V and is available in an 8-SOIC package.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Amplifier Type | Zero-Drift (Chopper) | |
| Number of Circuits | 1 | |
| Output Type | Rail-to-Rail | |
| Slew Rate | 0.4 V/μs | |
| Gain Bandwidth Product | 1.5 MHz | |
| Input Bias Current | 10 pA | |
| Input Offset Voltage | 1 μV | |
| Supply Current | 850 μA | |
| Output Current per Channel | 30 mA | |
| Supply Voltage Range | 2.7 V to 5.5 V | |
| Operating Temperature Range | -40°C to 125°C | |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
Key Features
- Ultralow Offset and Drift: The AD8551ARZ has an offset voltage of only 1 μV and a drift of 0.005 μV/°C, ensuring high accuracy in precision applications.
- No External Capacitors Required: This amplifier does not need external capacitors, simplifying the design process.
- Rail-to-Rail Input and Output Swings: Allows for full use of the supply voltage range, enhancing the dynamic range of the amplifier.
- Low Supply Current: Consumes only 850 μA of supply current, making it energy-efficient.
- High Common-Mode Rejection Ratio (CMRR) and Power Supply Rejection Ratio (PSRR): Ensures minimal interference from common-mode and power supply noise.
Applications
- Temperature Sensors: Ideal for precise temperature measurements due to its low offset and drift.
- Pressure Sensors: Suitable for pressure sensing applications requiring high accuracy.
- Precision Current Sensing: Used in applications where precise current measurement is necessary.
- Strain Gage Amplifiers: Enhances the accuracy of strain gage measurements.
- Medical Instrumentation: Used in medical devices where high precision and reliability are crucial.
- Thermocouple Amplifiers: Suitable for thermocouple applications due to its low noise and high accuracy.
Q & A
- What is the input offset voltage of the AD8551ARZ?
The input offset voltage of the AD8551ARZ is 1 μV. - What is the operating temperature range of the AD8551ARZ?
The operating temperature range is -40°C to 125°C. - Does the AD8551ARZ require external capacitors?
No, the AD8551ARZ does not require external capacitors. - What is the supply current of the AD8551ARZ?
The supply current is 850 μA. - What is the gain bandwidth product of the AD8551ARZ?
The gain bandwidth product is 1.5 MHz. - What are the typical applications of the AD8551ARZ?
Typical applications include temperature sensors, pressure sensors, precision current sensing, strain gage amplifiers, medical instrumentation, and thermocouple amplifiers. - What is the slew rate of the AD8551ARZ?
The slew rate is 0.4 V/μs. - What is the common-mode rejection ratio (CMRR) of the AD8551ARZ?
The CMRR is typically 115 dB to 130 dB. - What package type is the AD8551ARZ available in?
The AD8551ARZ is available in an 8-SOIC package. - What is the input bias current of the AD8551ARZ?
The input bias current is 10 pA.
