Overview
The AD8542ARU, produced by Analog Devices Inc., is a dual rail-to-rail input and output, single-supply operational amplifier. This device is part of the AD8541/AD8542/AD8544 family, known for its low supply current and high bandwidth. It operates 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 systems. The AD8542ARU is characterized by its low power consumption, high gain bandwidth product, and rail-to-rail input and output capabilities, which are essential for maintaining signal integrity in single-supply systems.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| 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 ≤ +125°C | 4 | 60 | 1000 | pA |
| Offset Voltage | VOS | −40°C ≤ TA ≤ +125°C | 1 | 6 | 7 | mV |
| Gain Bandwidth Product | GBP | 980 | kHz | |||
| Slew Rate | SR | RL = 100 kΩ | 0.4 | 0.8 | V/µs | |
| Phase Margin | ΦM | 64 | Degrees | |||
| Voltage Noise Density | en | f = 1 kHz | 42 | nV/√Hz | ||
| Current Noise Density | in | <0.1 | pA/√Hz | |||
| Operating Temperature | TA | −40 | 125 | °C | ||
| Package | 8-TSSOP |
Key Features
- Single-supply operation: 2.7 V to 5.5 V
- Low supply current: 45 µA per amplifier
- Wide bandwidth: 1 MHz
- No phase reversal
- Low input currents: 4 pA
- Unity gain stable
- Rail-to-rail input and output
- AEC-Q100 qualified for automotive applications
Applications
- ASIC input or output amplifiers
- Sensor interfaces
- Piezoelectric transducer amplifiers
- Medical instrumentation
- Mobile communications
- Audio outputs
- Portable systems
Q & A
- What is the supply voltage range for the AD8542ARU?
The AD8542ARU operates from a single supply voltage ranging from 2.7 V to 5.5 V.
- What is the typical supply current per amplifier for the AD8542ARU?
The typical supply current per amplifier is 45 µA.
- What is the gain bandwidth product of the AD8542ARU?
The gain bandwidth product is typically 980 kHz.
- Does the AD8542ARU have rail-to-rail input and output capabilities?
Yes, the AD8542ARU features rail-to-rail input and output capabilities.
- What are the typical input bias currents for the AD8542ARU?
The typical input bias currents are around 4 pA to 60 pA depending on the temperature range.
- What is the operating temperature range for the AD8542ARU?
The operating temperature range is from −40°C to +125°C.
- What package types are available for the AD8542ARU?
The AD8542ARU is available in 8-lead SOIC, 8-lead MSOP, and 8-lead TSSOP surface-mount packages.
- Is the AD8542ARU suitable for automotive applications?
Yes, the AD8542ARU is AEC-Q100 qualified for automotive applications.
- What are some common applications for the AD8542ARU?
Common applications include ASIC input or output amplifiers, sensor interfaces, piezoelectric transducer amplifiers, medical instrumentation, mobile communications, audio outputs, and portable systems.
- What is the slew rate of the AD8542ARU?
The slew rate is typically 0.4 V/µs to 0.8 V/µs.
