Analog Devices AD828ARZ- Video Op Amp

Analog Devices AD828ARZ- Video Op Amp

Overview

Manufactured by Analog Devices, the AD828 is a low cost, dual video op amp optimized for use in video applications which require gains of +2 or greater and high ouput drive capability, such as cable driving. Due to its low power and single supply functionality, along with excellent differential gain and phase errors, the AD828 is ideal for power sensitive applications such as video cameras and professional video equipment.

Features

Excellent Video Performance

Differential Gain and Phase Error of 0.01% and 0.05

High Speed

130 MHz 3 dB Bandwidth (G = +2)

450 V/s Slew Rate

80 ns Settling Time to 0.01%

Low Power

15 mA Max Power Supply Current

High Output Drive Capability

50 mA Minimum Output Current per Amplifier

Ideal for Driving Back Terminated Cables

Flexible Power Supply

Specified for +5 V, ±5 V, and ±15 V Operation

3.2 V Min Output Swing into a 150 Load

(VS = ±5 V)

Excellent DC Performance

2.0 mV Input Offset Voltage

Available in 8-Lead SOIC and 8-Lead Plastic Mini-DIP

Functional Block Diagram

Details

With video specs like 0.1 dB flatness to 40 MHz and low differential gain and phase errors of 0.01% and 0.05°, along with 50 mA of output current per amplifier, the AD828 is an excellent choice for any video application. The 130 MHz gain bandwidth and 450 V/µs slew rate make the AD828 useful in many high speed applications including: video monitors, CATV, color copiers, image scanners and fax machines.

The AD828 is fully specified for operation with a single +5 V power supply and with dual supplies from ±5 V to ±15 V. this power supply flexibility, coupled with a very low supply current of 15 mA and excellent ac characteristics under all power supply conditions, make the AD828 the ideal choice for many demanding yet power sensitive applications.

The AD828 is a voltage feedback op amp which excels as a gain stage (gains>+2) or active filter and high speed video systems and achieves a settling time of 45 ns to 0.1%, with a low input offset voltage of 2 mV max.

The AD828 is available in low cost, small 8-pin plastic mini-DIP and SOIC packages.

Video Line Driver

Operation

The AD828 consists of a degenerated NPN differential pair driving matched PNPs in a folded-cascade gain stage.

The output buffer stage employs emitter followers in a class AB amplifier that delivers the necessary current to the load while maintaining low levels of distortion.

The AD828 will drive terminated cables and capacitive loads of 10 pF or less. As the closed-loop gain is increased, the AD828 will drive heavier cap loads without oscillating.

Product Parameter

Manufacturer

Analog Devices is a multinational semiconductor company specializing in data conversion and signal processing technology. They design and manufacture analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) used in electronic equipment. Their products are used in a wide variety of applications such as communications, automotive, industrial, and healthcare industries.