Overview
The AD811JR-REEL7, 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 bandwidth, low distortion, and excellent DC precision. This amplifier is designed to meet stringent specifications for video applications, including high-speed performance and low differential gain and phase errors.
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 140 MHz bandwidth 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.
- High slew rate of 2500 V/μs and fast settling times of 25 ns to 0.1% and 65 ns to 0.01% for 2 V and 10 V steps, respectively.
- Excellent video performance with low distortion (THD = −74 dB at 10 MHz) and low voltage noise of 1.9 nV/√Hz.
- Flexible operation with specified performance over a power supply range of ±4.5 V to ±18 V.
- Low input offset voltage of 3 mV max and excellent DC precision.
Applications
- Video crosspoint switchers and multimedia broadcast systems.
- HDTV compatible systems.
- Video line drivers and distribution amplifiers.
- ADC/DAC buffers and 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 +1?
The bandwidth of the AD811 at a gain of +1 is 140 MHz.
- What is the slew rate of the AD811?
The slew rate of the AD811 is greater than 2500 V/μs.
- What are the settling times for the AD811?
The settling times are less than 25 ns to 0.1% for a 2 V step and 65 ns to 0.01% for a 10 V step.
- What is the differential gain and phase of the AD811?
The differential gain and phase 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 max.
- What is the power supply range for the AD811?
The power supply range is ±4.5 V to ±18 V.
- What are the typical quiescent currents for the AD811 at ±5 V and ±15 V?
The typical quiescent currents are 16.0 mA at ±5 V and 18.0 mA at ±15 V.
- What is the output swing into a 75 Ω load at VS = ±5 V?
The output swing is ±2.3 V into a 75 Ω load at VS = ±5 V.
- What are some common applications of the AD811?
Common applications include video crosspoint switchers, multimedia broadcast systems, HDTV compatible systems, video line drivers, distribution amplifiers, ADC/DAC buffers, DC restoration circuits, and medical applications such as ultrasound and PET systems.
- 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.
