Datasheet AD812 (Analog Devices)

a
Dual, Current Feedback Low Power Op Amp AD812 FEATURES PIN CONFIGURATION Two Video Amplifiers in One 8-Lead SOIC Package 8-Lead Plastic Optimized for Driving Cables in Video Systems Mini-DIP and SOIC Excellent Video Specifications (RL = 150
⍀
): Gain Flatness 0.1 dB to 40 MHz OUT1 1 8 V+ 0.02% Differential Gain Error 0.02 –IN1 2 + 7 OUT2
ⴗ
Differential Phase Error Low Power +IN1 3 6 –IN2 + Operates on Single +3 V Supply V– 4 5 +IN2 AD812 5.5 mA/Amplifier Max Power Supply Current High Speed 145 MHz Unity Gain Bandwidth (3 dB) 1600 V/
␮
s Slew Rate Easy to Use 50 mA Output Current Output Swing to 1 V of Rails (150
⍀
Load) APPLICATIONS
The AD812 offers low power of 4.0 mA per amplifier max (V
Video Line Driver
S = +5 V) and can run on a single +3 V power supply. The outputs
Professional Cameras
of each amplifier swing to within one volt of either supply rail to
Video Switchers
easily accommodate video signals of 1 V p-p. Also, at gains of
Special Effects
+2 the AD812 can swing 3 V p-p on a single +5 V power sup- ply. All this is offered in a small 8-lead plastic DIP or 8-lead
PRODUCT DESCRIPTION
SOIC package. These features make this dual amplifier ideal The AD812 is a low power, single supply, dual video amplifier. for portable and battery powered applications where size and Each of the amplifiers have 50 mA of output current and are power is critical. optimized for driving one back-terminated video load (150 Ω) each. Each amplifier is a current feedback amplifier and fea- The outstanding bandwidth of 145 MHz along with 1600 V/µs tures gain flatness of 0.1 dB to 40 MHz while offering differen- of slew rate make the AD812 useful in many general purpose tial gain and phase error of 0.02% and 0.02°. This makes the high speed applications where a single +5 V or dual power sup- AD812 ideal for professional video electronics such as cameras plies up to ± 15 V are available. The AD812 is available in the and video switchers. industrial temperature range of –40°C to +85°C.
0.4 0.06 G = +2 0.3 RL = 150
V
0.04 0.2 DIFFERENTIAL GAIN 0.1 0.08 0.02 0 DIFFERENTIAL GAIN – % –0.1 0.06 –0.2 DIFFERENTIAL PHASE VS =
6
15V 0.04 –0.3 NORMALIZED GAIN – dB
6
5V –0.4 0.02 5V –0.5 3V –0.6 DIFFERENTIAL PHASE – Degrees 0 100k 1M 10M 100M 5 6 7 8 9 10 11 12 13 14 15 FREQUENCY – Hz SUPPLY VOLTAGE –
6
Volts
Figure 1. Fine-Scale Gain Flatness vs. Frequency, Gain Figure 2. Differential Gain and Phase vs. Supply Voltage, = +2, RL = 150 Ω Gain = +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
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