Overview
The AD818AR, produced by Analog Devices Inc., is a low-cost, low-power video operational amplifier (op amp) designed for use in various video applications. It is optimized for gains equal to or greater than +2 or –1, making it ideal for cable driving applications such as video cameras and professional video equipment. The AD818AR features low differential gain and phase errors, single supply functionality, and high output drive, making it suitable for high-speed applications including video monitors, CATV, color copiers, image scanners, and fax machines.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | Single/Dual | +5 V / ±2.5 V | +36 V / ±18 V | V | |
| Quiescent Current | ±5 V, ±15 V | 7.0 | 7.5 | 7.5 | mA |
| Output Current | ±5 V, ±15 V | 30 | 50 | mA | |
| Short-Circuit Current | ±15 V | 90 | mA | ||
| Input Resistance | 300 | kΩ | |||
| Input Capacitance | 1.5 | pF | |||
| Output Resistance (Open Loop) | 8 | Ω | |||
| Slew Rate | 500 | V/μs | |||
| 3 dB Bandwidth (G = +2) | 130 | MHz | |||
| Differential Gain Error | 0.01% | % | |||
| Differential Phase Error | 0.05° | ° |
Key Features
- Low differential gain and phase errors (0.01% and 0.05° respectively).
- High output drive capability with 50 mA minimum output current, ideal for driving back-terminated cables.
- Flexible power supply options: specified for single (+5 V) and dual (±5 V to ±15 V) power supplies.
- Low power consumption with a maximum supply current of 7.5 mA.
- High speed performance with a 130 MHz 3 dB bandwidth and 500 V/ms slew rate.
- Available in 8-lead SOIC and 8-lead PDIP packages.
- Settling time of 45 ns to 0.1% and low input offset voltage of 2 mV max.
- Proprietary ESD protection circuitry to protect against electrostatic discharges.
Applications
- Video cameras and professional video equipment.
- Video monitors and CATV systems.
- Color copiers and image scanners.
- Fax machines and other high-speed video applications.
- Cable driving applications requiring high output drive and low differential gain and phase errors.
Q & A
- What is the AD818AR optimized for? The AD818AR is optimized for gains equal to or greater than +2 or –1, making it ideal for video applications.
- What are the power supply options for the AD818AR? The AD818AR can operate on single (+5 V) and dual (±5 V to ±15 V) power supplies.
- What is the maximum output current of the AD818AR? The AD818AR has a minimum output current of 50 mA.
- What is the slew rate of the AD818AR? The slew rate of the AD818AR is 500 V/ms.
- What are the typical applications of the AD818AR? Typical applications include video cameras, video monitors, CATV, color copiers, image scanners, and fax machines.
- What is the settling time of the AD818AR to 0.1%? The settling time of the AD818AR to 0.1% is 45 ns.
- What is the input offset voltage of the AD818AR? The input offset voltage of the AD818AR is 2 mV max.
- What are the package options for the AD818AR? The AD818AR is available in 8-lead SOIC and 8-lead PDIP packages.
- Does the AD818AR have ESD protection? Yes, the AD818AR features proprietary ESD protection circuitry.
- What is the 3 dB bandwidth of the AD818AR at a gain of +2? The 3 dB bandwidth of the AD818AR at a gain of +2 is 130 MHz.
- What is the differential gain error of the AD818AR? The differential gain error of the AD818AR is 0.01%.
