AD812 Analog Devices, AD812 Datasheet
AD812
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AD812 Summary of contents
Page 1
... V p-p. Also, at gains of +2 the AD812 can swing single +5 V power sup- ply. All this is offered in a small 8-lead plastic DIP or 8-lead SOIC package. These features make this dual amplifier ideal for portable and battery powered applications where size and power is critical ...
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... –T MIN MAX +Input 15 V –Input +Input 2 –2– AD812A Min Typ Max Units 50 65 MHz 75 100 MHz 100 145 MHz 20 30 MHz 25 40 MHz 275 425 V/ s 1400 ...
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... Min Typ Max Units 3.5 3.8 V 13.6 14 100 mA 15 –75 dB 0.1 dB 0 3.5 4.0 mA 4.5 5 0.3 0.6 A/V 0.005 0.05 A/V AD812A Min Typ Max Units 35 50 MHz 30 40 MHz 13 20 MHz 10 18 MHz 125 nV/ Hz 3.5 pA/ Hz 1.5 pA 0.07 % 0.15 % 0.06 Degrees 0.15 Degrees ...
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... + MHz + – MIN MAX T – MIN MAX Per Amplifier + – MIN MAX + –4– AD812A Min Typ Max Units 1.5 4 0.2 1 ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD812 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... AD812–Typical Performance Characteristics SUPPLY VOLTAGE – Figure 4. Input Common-Mode Voltage Range vs. Supply Voltage SUPPLY VOLTAGE – Figure 5. Output Voltage Swing vs. Supply Voltage 100 LOAD RESISTANCE – Figure 6. Output Voltage Swing vs. Load Resistance ...
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... 15V 100 120 140 Figure 15. Large Signal Frequency Response –7– SUPPLY VOLTAGE – Volts 15V S 10k 100k 1M 10M FREQUENCY – 15V 100k 1M 10M FREQUENCY – Hz AD812 20 100M 100M ...
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... AD812 100 INVERTING INPUT CURRENT NOISE 10 VOLTAGE NOISE NONINVERTING INPUT CURRENT NOISE 1 10 100 1k FREQUENCY – Hz Figure 16. Input Current and Voltage Noise vs. Frequency 90 80 681 V IN 681 10k 100k 1M FREQUENCY – Hz Figure 17. Common-Mode Rejection vs. Frequency 80 70 ...
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... R = 150 15V S –90 160 5V 140 –180 5V 120 –270 3V 100 100 1000 Figure 27. –3 dB Bandwidth vs. Supply Voltage –9– AD812 + –1 0 1.5 3.0 4.5 6.0 7.5 9.0 10.5 12.0 SUPPLY VOLTAGE – Volts 500mV 20ns 100 500mV = 150 , ...
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... AD812 500mV 100 Figure 28. Large Signal Pulse Response, Gain = +10 357 , R = 500 , PHASE GAIN –1 5V –2 3V –3 –4 –5 – 100 FREQUENCY – MHz Figure 29. Closed-Loop Gain and Phase vs. Frequency, Gain = +10 150 ...
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... GAIN 15V 100 FREQUENCY – MHz = – 357 154 R = 649 SUPPLY VOLTAGE – Volts = AD812 20ns OUT –90 –180 –270 1000 18 20 ...
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... Choice of Feedback and Gain Resistors Because current feedback amplifier, the closed-loop band- width of the AD812 depends on the value of the feedback resis- tor. The bandwidth also depends on the supply voltage. In addition, attenuation of the open-loop response when driving load resistors less than about 250 will affect the bandwidth ...
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... Achieving Low Crosstalk Measured crosstalk from the output of amplifier 2 to the input of amplifier 1 of the AD812 is shown in Figure 40. The crosstalk from the output of amplifier 1 to the input of amplifier few dB better than this due to the additional distance between criti- cal signal nodes ...
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... High Performance Video Line Driver At a gain of +2, the AD812 makes an excellent driver for a back- terminated 75 errors and wide 0.1 dB bandwidth can be realized over a wide range of power supply voltage. Outstanding gain and group delay matching are also attainable over the full operating supply voltage range ...
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... Figure 51. Closed-Loop Gain Matching vs. Frequency, Gain = + 0.02 0 0.4 0.2 0 –0.2 –0.4 100k Volts Figure 52. Group Delay and Group Delay Matching vs. Frequency +2, R –15– AD812 150 15V 10M FREQUENCY – 150 150 ...
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... AD812 Operation Using a Single Supply The AD812 will operate with total supply voltages from 36 V down to 2.4 V. With proper biasing (see Figure 53), it can be an outstanding single supply video amplifier. Since the input and output voltage ranges extend to within 1 volt of the supply rails, it will handle a 1 ...