Datasheet AD813 (Analog Devices)

a
Single Supply, Low Power Triple Video Amplifier AD813 FEATURES PIN CONFIGURATION Low Cost 14-Lead DIP and SOIC Three Video Amplifiers in One Package Optimized for Driving Cables in Video Systems DISABLE1 1 14 OUT2 Excellent Video Specifications (RL = 150
V
) DISABLE2 2 13 –IN2 Gain Flatness 0.1 dB to 50 MHz DISABLE3 3 12 +IN2 0.03% Differential Gain Error V 0.06
8
Differential Phase Error S+ 4 11 VS– AD813 Low Power +IN1 5 10 +IN3 Operates on Single +3 V to
6
15 V Power Supplies –IN1 6 9 –IN3 5.5 mA/Amplifier Max Power Supply Current OUT1 7 8 OUT3 High Speed 125 MHz Unity Gain Bandwidth (–3 dB) 500 V/
m
s Slew Rate
50 MHz while offering differential gain and phase error of
High Speed Disable Function per Channel
0.03% and 0.06°. This makes the AD813 ideal for broadcast
Turn-Off Time 80 ns
and consumer video electronics.
Easy to Use
The AD813 offers low power of 5.5 mA per amplifier max and
50 mA Output Current
runs on a single +3 V power supply. The outputs of each ampli-
Output Swing to 1 V of Rails
fier swing to within one volt of either supply rail to easily accom-
APPLICATIONS
modate video signals. While operating on a single +5 V supply
Video Line Driver
the AD813 still achieves 0.1 dB flatness to 20 MHz and 0.05%
LCD Drivers
& 0.05° of differential gain and phase performance. All this is
Computer Video Plug-In Boards
offered in a small 14-lead plastic DIP or SOIC package. These
Ultrasound
features make this triple amplifier ideal for portable and battery
RGB Amplifier
powered applications where size and power are critical.
CCD Based Systems
The outstanding bandwidth of 125 MHz along with 500 V/µs of slew rate make the AD813 useful in many general purpose, high
PRODUCT DESCRIPTION
speed applications where a single +3 V or dual power supplies The AD813 is a low power, single supply triple video amplifier. up to ± 15 V are needed. Furthermore the AD813 contains a Each of the three current feedback amplifiers has 50 mA of output high speed disable function for each amplifier in order to power current, and is optimized for driving one back-terminated video down the amplifier or high impedance the output. This can then load (150 Ω). The AD813 features gain flatness of 0.1 dB to be used in video multiplexing applications. The AD813 is avail- able in the industrial temperature range of –40°C to +85°C in plastic DIP and SOIC packages as well as chips.
G = +2 RL = 150
V
0.2 500mV 500ns
6
15V 0.1 100 0 90 –0.1
6
5V –0.2 3V –0.3 NORMALIZED GAIN – dB 5V –0.4 10 –0.5 0% 5V 100k 1M 10M 100M FREQUENCY – Hz
Figure 1. Fine Scale Gain Flatness vs. Frequency, Figure 2. Channel Switching Characteristics for a 3:1 Mux G = +2, RL = 150 Ω REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties
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