Overview
The AD8534ARZ, produced by Analog Devices Inc., is a quad rail-to-rail input and output single-supply operational amplifier. This device is part of the AD853x family, which includes single, dual, and quad configurations. The AD8534 is known for its high output drive current of ±250 mA, making it suitable for driving both resistive and capacitive loads. It operates over a wide temperature range of −40°C to +85°C and is stable over a single supply voltage of 2.7 V to 6 V. The amplifier features a bandwidth of 3 MHz and a slew rate of 5 V/μs, ensuring good AC performance and low distortion. Its low input bias currents and rail-to-rail input and output capabilities make it versatile for various applications.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | −40°C ≤ TA ≤ +85°C | 25 | 30 | mV | |
| Input Bias Current | IB | −40°C ≤ TA ≤ +85°C | 5 | 60 | pA | |
| Input Offset Current | IOS | −40°C ≤ TA ≤ +85°C | 1 | 30 | pA | |
| Input Voltage Range | VCM = 0 V to 5 V | 0 | 5 | V | ||
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 5 V | 38 | 47 | dB | |
| Large Signal Voltage Gain | AVO | RL = 2 kΩ, VO = 0.5 V to 4.5 V | 15 | 80 | V/mV | |
| Output Voltage High | VOH | IL = 10 mA | 4.9 | 4.94 | V | |
| Output Voltage Low | VOL | IL = 10 mA | 50 | 125 | mV | |
| Output Current | IOUT | ±250 | mA | |||
| Bandwidth | 3 | MHz | ||||
| Slew Rate | 5 | V/μs |
Key Features
- High Output Drive Current: ±250 mA, suitable for driving both resistive and capacitive loads.
- Rail-to-Rail Input and Output: Enables the amplifier to swing rail-to-rail at both inputs and outputs.
- Low Input Bias Currents: Very low input bias currents, making it suitable for integrators, diode amplification, and other applications requiring low input bias current.
- Wide Bandwidth and Slew Rate: 3 MHz bandwidth and 5 V/μs slew rate, ensuring good AC performance and low distortion.
- Low Supply Current: Only 750 μA per amplifier at 5 V, allowing for low current applications to control high current loads.
- No Phase Reversal: Ensures stable operation without phase reversal.
- Extended Industrial Temperature Range: Operates over −40°C to +85°C.
Applications
- Audio Amplification: Suitable for audio amplification in computers, sound ports, sound cards, and set-top boxes.
- LCD Drivers: Excellent for driving heavy capacitive loads such as those found in LCD panels.
- ASIC Input or Output Amplifiers: Can buffer CMOS DACs, ASICs, or other wide output swing devices in single-supply systems.
- Headphone Drivers: Ideal for driving headphones due to its high output current and low distortion.
- Multimedia Audio: Used in various multimedia audio applications requiring high output drive and low distortion.
Q & A
- What is the output drive current of the AD8534ARZ?
The AD8534ARZ has an output drive current of ±250 mA.
- What is the operating temperature range of the AD8534ARZ?
The AD8534ARZ operates over an extended industrial temperature range of −40°C to +85°C.
- What is the bandwidth of the AD8534ARZ?
The bandwidth of the AD8534ARZ is 3 MHz.
- What is the slew rate of the AD8534ARZ?
The slew rate of the AD8534ARZ is 5 V/μs.
- Is the AD8534ARZ suitable for driving capacitive loads?
Yes, the AD8534ARZ is very stable and capable of driving heavy capacitive loads such as those found in LCDs.
- What are the typical applications of the AD8534ARZ?
The AD8534ARZ is used in audio amplification, LCD drivers, ASIC input or output amplifiers, headphone drivers, and multimedia audio applications.
- What is the input bias current of the AD8534ARZ?
The input bias current of the AD8534ARZ is typically 5 pA.
- Does the AD8534ARZ have rail-to-rail input and output capabilities?
Yes, the AD8534ARZ has rail-to-rail input and output capabilities.
- What is the supply current per amplifier at 5 V for the AD8534ARZ?
The supply current per amplifier at 5 V is 750 μA.
- Is the AD8534ARZ free from phase reversal?
Yes, the AD8534ARZ does not exhibit phase reversal.
