Overview
The AD8057AR-REEL7 is a high-performance, single-channel voltage feedback operational amplifier produced by Analog Devices Inc. This amplifier is known for its exceptional balance between cost and performance, making it an ideal choice for a wide range of applications. The AD8057 features a high bandwidth of 325 MHz and a slew rate of 1000 V/μs, which are typically found in current feedback amplifiers but are achieved here with voltage feedback technology. It operates over a wide supply range from 3 V to 12 V and is available in compact packages such as the 8-lead SOIC and the 5-lead SOT-23, making it suitable for space-constrained designs. The amplifier is designed to meet the stringent requirements of high-end video systems and other applications demanding low noise and distortion.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Bandwidth | 325 MHz (G = +1) | - |
| Slew Rate | 1000 V/μs | - |
| Supply Voltage Range | 3 V to 12 V | - |
| Quiescent Current | 5.4 mA/amplifier at 5 V | - |
| Input Offset Voltage | 1 mV to 2.5 mV (TMIN to TMAX) | - |
| Input Bias Current | 0.5 μA to 2.5 μA (TMIN to TMAX) | - |
| Open-Loop Gain | 50 dB to 55 dB (VO = ±1.5 V, RL = 2 kΩ to midsupply) | - |
| Common-Mode Rejection Ratio | 48 dB to 60 dB (VCM = ±2.5 V) | - |
| Output Voltage Swing | 0.9 V to 3.8 V (RL = 2 kΩ), 1.2 V to 3.4 V (RL = 150 Ω) | - |
| Operating Temperature Range | -40°C to +85°C | - |
Key Features
- High bandwidth of 325 MHz and a slew rate of 1000 V/μs, similar to current feedback amplifiers but achieved with voltage feedback technology.
- Low cost and high performance, making it ideal for various applications.
- Wide supply range from 3 V to 12 V, allowing flexibility in design.
- Low quiescent current of 5.4 mA per amplifier at 5 V, contributing to low power consumption.
- Available in compact packages such as 8-lead SOIC and 5-lead SOT-23, suitable for space-constrained designs.
- Excellent noise and distortion performance, suitable for high-end video systems.
Applications
- High-end video systems: The AD8057 is used in video amplifiers and other analog video functions due to its low noise and distortion characteristics.
- Imaging and professional cameras: It is suitable for applications requiring high-speed and low-noise amplification.
- DVD/CD and photodiode preamps: The amplifier's high bandwidth and slew rate make it ideal for these applications.
- Analog-to-digital drivers: It can be used to drive capacitive loads and in differential analog-to-digital driver circuits).
- Filter circuits: The AD8057 can be used in various filter designs, such as low-pass, high-pass, and band-pass filters).
Q & A
- What is the bandwidth of the AD8057 amplifier?
The bandwidth of the AD8057 amplifier is 325 MHz at a gain of +1).
- What is the slew rate of the AD8057?
The slew rate of the AD8057 is 1000 V/μs).
- What is the supply voltage range for the AD8057?
The supply voltage range for the AD8057 is from 3 V to 12 V).
- What are the typical quiescent current and input offset voltage of the AD8057?
The typical quiescent current is 5.4 mA per amplifier at 5 V, and the input offset voltage is 1 mV to 2.5 mV (TMIN to TMAX)).
- In what packages is the AD8057 available?
The AD8057 is available in 8-lead SOIC and 5-lead SOT-23 packages).
- What are some common applications of the AD8057?
The AD8057 is commonly used in high-end video systems, imaging and professional cameras, DVD/CD and photodiode preamps, and analog-to-digital drivers).
- How does the AD8057 perform in terms of noise and distortion?
The AD8057 has excellent noise and distortion performance, making it suitable for high-end video systems and other applications requiring low noise and distortion).
- Can the AD8057 drive capacitive loads?
Yes, the AD8057 can drive capacitive loads with minimal overshoot and is suitable for differential analog-to-digital driver circuits).
- What is the operating temperature range of the AD8057?
The operating temperature range of the AD8057 is -40°C to +85°C).
- How does the AD8057 compare to current feedback amplifiers?
The AD8057, despite being a voltage feedback amplifier, offers performance characteristics such as bandwidth and slew rate that are typically found in current feedback amplifiers).
