Overview
The AD8542ARM-REEL, 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 low power consumption and high performance over a wide range of supply voltages.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V | |
| Supply Current per Amplifier | 45 μA | VO = 0 V |
| Bandwidth | 1 MHz | |
| Input Bias Current | 4 pA | |
| Large Signal Voltage Gain | 38 dB to 50 dB | RL = 100 kΩ, VO = 0.5 V to 2.2 V |
| Offset Voltage Drift | 4 μV/°C | −40°C ≤ TA ≤ +125°C |
| Slew Rate | 0.4 V/μs to 0.8 V/μs | RL = 100 kΩ |
| Settling Time | 5 μs | To 0.01% (1 V step) |
| Gain Bandwidth Product | 980 kHz | |
| Phase Margin | 64 Degrees | |
| Voltage Noise Density | 42 nV/√Hz at 1 kHz, 38 nV/√Hz at 10 kHz |
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 bias currents: 4 pA
- Rail-to-rail input and output
- Unity gain stable
- 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
- Active filters and gain stages
Q & A
- What is the supply voltage range of the AD8542?
The AD8542 operates from a single supply voltage range of 2.7 V to 5.5 V.
- What is the typical supply current per amplifier for the AD8542?
The typical supply current per amplifier is 45 μA.
- What is the bandwidth of the AD8542?
The bandwidth of the AD8542 is 1 MHz.
- Does the AD8542 have rail-to-rail input and output capabilities?
Yes, the AD8542 has rail-to-rail input and output capabilities.
- What are the typical applications of the AD8542?
The AD8542 is typically used in ASIC input or output amplifiers, sensor interfaces, piezoelectric transducer amplifiers, medical instrumentation, mobile communications, audio outputs, and portable systems.
- Is the AD8542 suitable for automotive applications?
Yes, the AD8542 is AEC-Q100 qualified for automotive applications.
- What is the slew rate of the AD8542?
The slew rate of the AD8542 is between 0.4 V/μs and 0.8 V/μs.
- What is the gain bandwidth product of the AD8542?
The gain bandwidth product of the AD8542 is 980 kHz.
- What is the phase margin of the AD8542?
The phase margin of the AD8542 is 64 degrees.
- What is the voltage noise density of the AD8542?
The voltage noise density of the AD8542 is 42 nV/√Hz at 1 kHz and 38 nV/√Hz at 10 kHz.
