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AD8244ARMZ-R7 Scheda tecnica(PDF) 18 Page - Analog Devices |
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AD8244ARMZ-R7 Scheda tecnica(HTML) 18 Page - Analog Devices |
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18 / 20 page ![]() AD8244 Data Sheet LOW NOISE, JFET INPUT BUFFER The voltage noise of the AD8244 can be reduced by placing multiple buffers in parallel. For example, two buffers in parallel reduce the voltage noise by √2, or all four buffers placed in parallel act as a buffer with ½ the noise. The trade-offs to this method are increased bias current, current noise, and input capacitance. Place a small resistor, such as 50 Ω, between the outputs to avoid extra current flow due to the slight differences between each output. For less power sensitive applications, these 50 Ω resistors can be omitted to boost the available output current. VOUT VIN RS AD8244 RO 1/4 AD8244 RO 1/4 AD8244 RO 1/4 AD8244 RO 1/4 Figure 47. Reducing the Voltage Noise Rev. A | Page 18 of 20 |
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