Overview
The AD8531AR, produced by Analog Devices Inc., is a single, rail-to-rail input/output, single-supply operational amplifier. This amplifier is part of the AD8531/AD8532/AD8534 family, which includes single, dual, and quad configurations. The AD8531AR is known for its high output current of ±250 mA, making it suitable for driving both resistive and capacitive loads. It operates on a single supply voltage ranging from 2.7 V to 6 V, with low supply current of 750 μA per amplifier at 5 V. This amplifier is designed for applications requiring high output drive current and good AC performance, including a bandwidth of 3 MHz and a slew rate of 5 V/μs.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VS | 2.7 | 6 | V | ||
| Output Current | IOUT | ±250 | mA | |||
| Supply Current/Amplifier | ISY | VO = 0 V | 0.75 | 1.25 | 1.75 | mA |
| Offset Voltage | VOS | −40°C ≤ TA ≤ +85°C | 25 | 30 | mV | |
| Input Bias Current | IB | −40°C ≤ TA ≤ +85°C | 5 | 50 | 60 | pA |
| Slew Rate | SR | RL = 2 kΩ | 5 | V/μs | ||
| Gain Bandwidth Product | GBP | 3 | MHz | |||
| Phase Margin | φo | 70 | Degrees |
Key Features
- Single-supply operation: 2.7 V to 6 V
- High output current: ±250 mA
- Low supply current: 750 μA per amplifier at 5 V
- Wide bandwidth: 3 MHz
- Slew rate: 5 V/μs
- No phase reversal
- Low input bias currents
- Unity gain stable
- Rail-to-rail input and output
Applications
- Multimedia audio amplification for computers, sound ports, sound cards, and set-top boxes
- LCD drivers
- ASIC input or output amplifiers
- Headphone drivers
- Buffering CMOS DACs, ASICs, or other wide output swing devices in single-supply systems
Q & A
- What is the output current of the AD8531AR?
The AD8531AR has an output current of ±250 mA.
- What is the supply voltage range for the AD8531AR?
The AD8531AR operates on a single supply voltage ranging from 2.7 V to 6 V.
- What is the typical supply current per amplifier at 5 V?
The typical supply current per amplifier at 5 V is 750 μA.
- What is the bandwidth of the AD8531AR?
The bandwidth of the AD8531AR is 3 MHz.
- What is the slew rate of the AD8531AR?
The slew rate of the AD8531AR is 5 V/μs.
- Does the AD8531AR have rail-to-rail input and output capability?
- What are some common applications of the AD8531AR?
- What is the phase margin of the AD8531AR?
The phase margin of the AD8531AR is 70 degrees.
- Is the AD8531AR unity gain stable?
- What is the operating temperature range of the AD8531AR?
