Overview
The AD8031ANZ, produced by Analog Devices Inc., is a high-performance, single-supply voltage feedback amplifier. It is part of the AD8031 series, known for its high speed, low power consumption, and rail-to-rail input and output characteristics. This amplifier is particularly suited for applications requiring fast settling times and low distortion, making it ideal for use in single-supply ADC buffers and other high-speed signal processing tasks.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 2.7 | - | 12.6 | V |
| Quiescent Current per Amplifier | 800 | - | 1600 | μA |
| Bandwidth (−3 dB, G = +1) | 70 | 80 | - | MHz |
| Slew Rate (25% to 75%) | 30 | - | - | V/μs |
| Output Voltage Swing (RL = 1 kΩ) | -20 mV from rail | - | - | mV |
| Output Short-Circuit Current | 15 | - | - | mA |
| Power Supply Rejection Ratio (PSRR) | 76 | - | 86 | dB |
| Input Common-Mode Voltage Range | 200 mV beyond supply | - | - | mV |
Key Features
- High speed performance with 80 MHz of small signal bandwidth and a 30 V/μs slew rate.
- Low power consumption: 800 μA supply current per amplifier.
- Rail-to-rail input and output characteristics, allowing the input voltage range to extend 200 mV beyond each supply rail.
- Excellent signal quality with low distortion: THD of −62 dBc at 1 MHz and −86 dBc at 100 kHz.
- True single-supply capability with operation at +2.7 V, +5 V, and ±5 V supplies.
- No phase reversal up to 500 mV beyond supply rails.
Applications
- Single-supply ADC buffers due to low distortion and fast settling times.
- High-speed signal processing and amplification in various electronic systems.
- Audio and video signal amplification where high fidelity and low noise are critical.
- Medical and industrial instrumentation requiring high accuracy and speed.
Q & A
- What is the typical bandwidth of the AD8031ANZ?
The typical bandwidth of the AD8031ANZ is 80 MHz at a gain of +1. - What is the slew rate of the AD8031ANZ?
The slew rate of the AD8031ANZ is 30 V/μs. - What is the quiescent current per amplifier for the AD8031ANZ?
The quiescent current per amplifier is 800 μA. - What are the supply voltage ranges for the AD8031ANZ?
The AD8031ANZ operates at +2.7 V, +5 V, and ±5 V supplies. - Does the AD8031ANZ have rail-to-rail input and output characteristics?
Yes, the AD8031ANZ features rail-to-rail input and output characteristics. - What is the output voltage swing of the AD8031ANZ?
The output voltage swing is within 20 mV of either supply rail when driving a light load. - What is the power supply rejection ratio (PSRR) of the AD8031ANZ?
The PSRR is between 76 dB and 86 dB. - Is the AD8031ANZ suitable for single-supply ADC buffers?
Yes, it is highly suitable due to its low distortion and fast settling times. - What is the typical harmonic distortion (THD) of the AD8031ANZ?
The THD is −62 dBc at 1 MHz and −86 dBc at 100 kHz. - What are some common applications of the AD8031ANZ?
Common applications include high-speed signal processing, audio and video signal amplification, and medical and industrial instrumentation.
