Overview
The AD811JR-REEL, produced by Analog Devices Inc., is a high-performance, wideband current feedback operational amplifier. It is specifically optimized for broadcast-quality video systems, offering exceptional video performance with a −3 dB bandwidth of 120 MHz at a gain of +2. The amplifier is known for its low differential gain and phase errors, making it an excellent choice for various video and high-speed applications. It operates over a wide power supply range of ±4.5 V to ±18 V, ensuring flexibility in different system designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Bandwidth (−3 dB, G = +1) | 140 | MHz | ||
| Bandwidth (−3 dB, G = +2) | 120 | MHz | ||
| Bandwidth (0.1 dB, G = +2) | 35 | MHz | ||
| Slew Rate | 2500 | V/µs | ||
| Settling Time (to 0.1%, 2 V step) | 25 | ns | ||
| Settling Time (to 0.01%, 10 V step) | 65 | ns | ||
| Differential Gain (RL = 150 Ω) | 0.01% | % | ||
| Differential Phase (RL = 150 Ω) | 0.01° | ° | ||
| Voltage Noise | 1.9 | nV/√Hz | ||
| Input Offset Voltage | 3 | mV | ||
| Power Supply Range | ±4.5 | ±18 | V | |
| Quiescent Current (±5 V) | 14.5 | 16.0 | mA | |
| Quiescent Current (±15 V) | 16.5 | 18.0 | mA | |
| Output Swing (into 75 Ω load, VS = ±5 V) | ±2.3 | V |
Key Features
- High-speed operation with a bandwidth of 140 MHz at a gain of +1 and 120 MHz at a gain of +2.
- Low differential gain and phase errors of 0.01% and 0.01°, respectively, at RL = 150 Ω.
- Excellent video performance with low distortion (THD = −74 dB at 10 MHz) and voltage noise of 1.9 nV/√Hz.
- Flexible operation with specified performance over ±5 V and ±15 V power supplies.
- Fast settling times: 25 ns to 0.1% for a 2 V step and 65 ns to 0.01% for a 10 V step.
- Low input offset voltage of 3 mV maximum.
- High slew rate of greater than 2500 V/µs.
Applications
- Video crosspoint switchers and multimedia broadcast systems.
- HDTV compatible systems.
- Video line drivers and distribution amplifiers.
- ADC/DAC buffers.
- DC restoration circuits.
- Medical applications such as ultrasound, PET, and gamma counter systems.
- Pulsed applications where transient response is critical.
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 are 0.01% and 0.01°, respectively, at RL = 150 Ω.
- What is the input offset voltage of the AD811? The input offset voltage is 3 mV maximum.
- Over what power supply range is the AD811 specified? The AD811 is specified over a power supply range of ±4.5 V to ±18 V.
- What is the quiescent current of the AD811 at ±5 V and ±15 V power supplies? The quiescent current is 14.5 mA to 16.0 mA at ±5 V and 16.5 mA to 18.0 mA at ±15 V.
- What are some typical applications of the AD811? Typical applications include video crosspoint switchers, multimedia broadcast systems, HDTV compatible systems, video line drivers, distribution amplifiers, ADC/DAC buffers, and medical applications.
- What is the settling time of the AD811 for a 2 V step and a 10 V step? The settling time is 25 ns to 0.1% for a 2 V step and 65 ns to 0.01% for a 10 V step.
- Is the AD811 suitable for pulsed applications? Yes, the AD811 is excellent for pulsed applications where transient response is critical.
- What is the output swing of the AD811 into a 75 Ω load at ±5 V power supply? The output swing is ±2.3 V into a 75 Ω load at ±5 V power supply.
