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ADL5801ACPZ-R7 Folha de dados(PDF) 12 Page - Analog Devices |
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ADL5801ACPZ-R7 Folha de dados(HTML) 12 Page - Analog Devices |
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12 / 20 page ![]() ADL5801 Rev. 0 | Page 12 of 20 BIAS CIRCUIT A band gap reference circuit generates the reference currents used by mixers. The bias circuit can be enabled and disabled using the ENBL pin. If the ENBL pin is grounded or left open, the part is enabled. Pulling the ENBL pin high shuts off the bias circuit and disables the part. However, the ENBL pin does not alter the current in the LO section and, therefore, does not provide a true power-down feature. In addition, if the VSET pin is connected to the positive supply through a resistor to increase the mixer core current, this continues to provide bias current to the mixer core unless the resistor supply is also removed. |
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