Overview
The AD811JRZ-REEL, produced by Analog Devices Inc., is a wideband current feedback operational amplifier optimized for broadcast-quality video systems. It is designed to provide high-speed performance with a −3 dB bandwidth of 120 MHz at a gain of +2 and excellent video specifications, including differential gain and phase errors of 0.01% and 0.01°, respectively, when driving a 150 Ω load. This amplifier is suitable for various video and high-speed applications due to its low distortion, high slew rate, and excellent dc precision.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Bandwidth (−3 dB) | 120 MHz | G = +2 |
| Bandwidth (0.1 dB gain flatness) | 35 MHz | G = +2 |
| Slew Rate | 2500 V/µs | |
| Settling Time (0.1% for 2 V step) | 25 ns | |
| Settling Time (0.01% for 10 V step) | 65 ns | |
| Input Offset Voltage | 3 mV max | |
| Voltage Noise | 1.9 nV/√Hz | |
| Power Supply Range | ±4.5 V to ±18 V | |
| Quiescent Current | 16.5 mA (±15 V) | |
| Output Swing | ±2.3 V into a 75 Ω load (VS = ±5 V) |
Key Features
- High-speed operation with a bandwidth of 120 MHz at a gain of +2 and 35 MHz bandwidth with 0.1 dB gain flatness.
- Excellent video performance with differential gain and phase errors of 0.01% and 0.01°, respectively.
- High slew rate of 2500 V/µs and fast settling times.
- Low distortion: THD = −74 dB at 10 MHz.
- Excellent dc precision with a maximum input offset voltage of 3 mV.
- Flexible power supply operation from ±4.5 V to ±18 V.
- Low power supply current of 16.5 mA at ±15 V.
- Low voltage and current noise.
Applications
- Video crosspoint switchers and multimedia broadcast systems.
- HDTV compatible systems.
- Video line drivers and distribution amplifiers.
- ADC/DAC buffers in data acquisition systems.
- DC restoration circuits.
- Medical applications such as ultrasound and PET/Gamma Counter systems.
Q & A
- What is the bandwidth of the AD811 at a gain of +2?
The bandwidth of the AD811 at a gain of +2 is 120 MHz.
- What is the slew rate of the AD811?
The slew rate of the AD811 is greater than 2500 V/µs.
- What are the differential gain and phase errors of the AD811?
The differential gain and phase errors of the AD811 are 0.01% and 0.01°, respectively, when driving a 150 Ω load.
- What is the input offset voltage of the AD811?
The maximum input offset voltage of the AD811 is 3 mV.
- What is the power supply range for the AD811?
The AD811 is specified over a power supply range of ±4.5 V to ±18 V.
- What are some typical applications of the AD811?
The AD811 is used in video crosspoint switchers, multimedia broadcast systems, HDTV compatible systems, video line drivers, distribution amplifiers, ADC/DAC buffers, and medical applications.
- What is the quiescent current of the AD811 at ±15 V power supply?
The quiescent current of the AD811 at ±15 V power supply is 16.5 mA.
- How much output swing can the AD811 achieve into a 75 Ω load at ±5 V power supply?
The AD811 can achieve an output swing of ±2.3 V into a 75 Ω load at ±5 V power supply.
- What is the settling time of the AD811 for a 2 V step to 0.1% accuracy?
The settling time of the AD811 for a 2 V step to 0.1% accuracy is less than 25 ns.
- Is the AD811 suitable for pulsed applications?
Yes, the AD811 is excellent for pulsed applications where transient response is critical due to its high slew rate and fast settling times.
