Overview
The AD8542ARZ-REEL7, produced by Analog Devices Inc., is a dual rail-to-rail input and output, single-supply operational amplifier. This component is part of the AD8541/AD8542/AD8544 family, known for their low supply current and high bandwidth. The AD8542 is particularly useful in applications requiring two independent amplifiers with minimal power consumption and high performance.
The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, making it versatile for various power-constrained systems. It features a wide bandwidth of 1 MHz and very low input bias currents, which are beneficial for applications such as sensor interfaces, medical instrumentation, and mobile communications.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VS | 2.7 | 5.5 | V | ||
| Supply Current/Amplifier | ISY | VO = 0 V | 40 | 60 | 75 | µA |
| Input Bias Current | IB | -40°C ≤ TA ≤ +85°C | 4 | 60 | 100 | pA |
| Input Offset Current | IOS | -40°C ≤ TA ≤ +85°C | 0.1 | 30 | 50 | pA |
| Offset Voltage | VOS | -40°C ≤ TA ≤ +125°C | 1 | 6 | 7 | mV |
| Gain Bandwidth Product | GBP | 980 | kHz | |||
| Phase Margin | ΦM | 63 | Degrees | |||
| Slew Rate | SR | RL = 100 kΩ | 0.4 | 0.8 | V/µs | |
| Settling Time | tS | To 0.01% (1 V step) | 5 | µs | ||
| Voltage Noise Density | en | f = 1 kHz | 40 | nV/√Hz | ||
| Current Noise Density | in | <0.1 | pA/√Hz | |||
| Operating Temperature | TA | -40 | 125 | °C |
Key Features
- Single-Supply Operation: The AD8542 operates from a single supply voltage ranging from 2.7 V to 5.5 V, making it suitable for a variety of applications.
- Low Supply Current: Each amplifier consumes only 45 µA of supply current, which is beneficial for power-constrained systems.
- Wide Bandwidth: The device features a bandwidth of 1 MHz, ensuring high-frequency performance.
- No Phase Reversal: This feature enhances the stability and reliability of the amplifier.
- Low Input Currents: Input bias currents are as low as 4 pA, making it ideal for applications requiring low input current.
- Rail-to-Rail Input and Output: The amplifier can operate with input and output signals that range from the negative to the positive supply rail.
- Unity Gain Stable: The AD8542 is stable when used in unity gain configurations.
- AEC-Q100 Qualified: Suitable for automotive applications due to its AEC-Q100 qualification.
Applications
- ASIC Input or Output Amplifiers: Used in Application-Specific Integrated Circuits (ASICs) for input or output stages.
- Sensor Interfaces: Ideal for interfacing with various sensors due to its low input bias currents and high bandwidth.
- Piezoelectric Transducer Amplifiers: Suitable for amplifying signals from piezoelectric transducers.
- Medical Instrumentation: Used in medical devices requiring low power consumption and high accuracy.
- Mobile Communications: Applicable in mobile communication systems where low power and high performance are critical.
- Audio Outputs: Can be used in audio output stages due to its rail-to-rail output capability.
- Portable Systems: Ideal for portable systems where power efficiency is essential.
- High-Frequency Data Acquisition Systems: Suitable for high-frequency data acquisition due to its wide bandwidth.
- Thermocouples and Weighing Systems: Used in thermocouple and weighing systems for precise signal amplification.
- Biopotential and Professional Videography: Applicable in biopotential measurement and professional videography equipment.
- Industrial and Automotive Applications: Used in various industrial and automotive applications, including automation and sensor interfaces.
Q & A
- What is the supply voltage range for the AD8542ARZ-REEL7?
The AD8542ARZ-REEL7 operates on a single supply voltage ranging from 2.7 V to 5.5 V.
- What is the typical supply current per amplifier for the AD8542ARZ-REEL7?
The typical supply current per amplifier is 45 µA.
- What is the bandwidth of the AD8542ARZ-REEL7?
The bandwidth of the AD8542ARZ-REEL7 is 1 MHz.
- Does the AD8542ARZ-REEL7 have rail-to-rail input and output capability?
Yes, the AD8542ARZ-REEL7 features rail-to-rail input and output capability.
- What is the typical input bias current of the AD8542ARZ-REEL7?
The typical input bias current is 60 pA.
- Is the AD8542ARZ-REEL7 AEC-Q100 qualified?
Yes, the AD8542ARZ-REEL7 is AEC-Q100 qualified, making it suitable for automotive applications.
- What are the common applications of the AD8542ARZ-REEL7?
The AD8542ARZ-REEL7 is commonly used in sensor interfaces, medical instrumentation, mobile communications, audio outputs, and portable systems.
- What is the phase margin of the AD8542ARZ-REEL7?
The phase margin is typically 63 degrees.
- What is the slew rate of the AD8542ARZ-REEL7?
The slew rate is 0.4 to 0.8 V/µs.
- What is the operating temperature range of the AD8542ARZ-REEL7?
The operating temperature range is from -40°C to 125°C.
