Overview
The AD8542ARZ is a dual-channel, rail-to-rail input and output, single-supply operational amplifier manufactured by Analog Devices Inc. This amplifier is part of the AD8541/AD8542/AD8544 family, known for its low power consumption, wide bandwidth, and high precision. The AD8542ARZ is designed to operate from a single supply voltage ranging from 2.7 V to 5.5 V, making it suitable for a variety of applications, including battery-powered devices and single-supply systems.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VS | 2.7 | 5.5 | V | ||
| Supply Current per Amplifier | ISY | VO = 0 V, TA = 25°C | 40 | 60 | 75 | µA |
| Bandwidth | 1 | MHz | ||||
| Slew Rate | SR | RL = 100 kΩ | 0.4 | 0.8 | V/µs | |
| Settling Time | tS | To 0.01%, 1 V step | 5 | µs | ||
| Gain Bandwidth Product | GBP | 980 | kHz | |||
| Phase Margin | ΦM | 63 | Degrees | |||
| Offset Voltage | VOS | –40°C ≤ TA ≤ +125°C | 1 | 6 | 7 | mV |
| Input Bias Current | IB | –40°C ≤ TA ≤ +125°C | 4 | 60 | 1000 | pA |
| Voltage Noise Density | en | f = 1 kHz | 40 | nV/√Hz | ||
| Operating Temperature Range | –40 | +125 | °C |
Key Features
- Rail-to-Rail Input and Output: Allows the use of the entire input and output voltage range, making it useful for buffering ASICs in single-supply systems.
- Low Supply Current: Only 45 µA per amplifier, ideal for battery operation and low power applications.
- Wide Bandwidth: 1 MHz bandwidth at a low current consumption.
- No Phase Reversal: Ensures stable operation without phase reversal.
- Low Input Bias Currents: Very low input bias currents (4 pA) enable use in applications with high source impedance, such as integrators, photodiode amplifiers, and piezoelectric sensors.
- Unity Gain Stable: Stable operation at unity gain.
- Low Offset Voltage: Typically less than 1 mV, suitable for precision and low distortion applications.
- AEC-Q100 Qualified: Qualified for automotive applications.
Applications
- ASIC Input or Output Amplifiers: Useful for buffering ASICs in single-supply systems.
- Sensor Interfaces: Suitable for applications involving sensors with high source impedance.
- Piezoelectric Transducer Amplifiers: Ideal for amplifying signals from piezoelectric transducers.
- Medical Instrumentation: Used in various medical devices due to its high precision and low noise characteristics.
- Mobile Communications: Suitable for mobile communication devices due to its low power consumption.
- Audio Outputs: Used in audio applications requiring low distortion and high precision.
- Portable Systems: Ideal for battery-powered portable systems.
- Active Filters and Gain Stages: Optimized to maintain high gains at lower supply voltages, making them useful for active filters and gain stages.
Q & A
- What is the supply voltage range of the AD8542ARZ?
The AD8542ARZ operates from a single supply voltage ranging from 2.7 V to 5.5 V.
- What is the typical supply current per amplifier?
The typical supply current per amplifier is 45 µA.
- What is the bandwidth of the AD8542ARZ?
The bandwidth of the AD8542ARZ is 1 MHz.
- What is the slew rate of the AD8542ARZ?
The slew rate of the AD8542ARZ is typically 0.8 V/µs.
- Is the AD8542ARZ unity gain stable?
Yes, the AD8542ARZ is unity gain stable.
- What are the typical offset voltage and input bias current of the AD8542ARZ?
The typical offset voltage is less than 1 mV, and the typical input bias current is 4 pA.
- What is the operating temperature range of the AD8542ARZ?
The operating temperature range is from –40°C to +125°C.
- Is the AD8542ARZ AEC-Q100 qualified?
Yes, the AD8542ARZ is AEC-Q100 qualified for automotive applications.
- What are some common applications of the AD8542ARZ?
Common applications include ASIC input or output amplifiers, sensor interfaces, piezoelectric transducer amplifiers, medical instrumentation, mobile communications, audio outputs, and portable systems.
- What package options are available for the AD8542ARZ?
The AD8542ARZ is available in 8-lead SOIC, 8-lead MSOP, and 8-lead TSSOP surface-mount packages.
