самое лучшее IMHO решение - использовать схему fig.44 если у Вас однополярное питание
PS:я так понял, что выводы 4 и 5 могут быть использованы для перевода регулируемого усилителя
в экономичный режим (подачей низкого уровня на вывод 4) c сохранением настроек см.также fig.59Добавлено (06.01.2014, 23:09)
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POWER-UP FEATURE
The power-up feature does not affect the GainCode, and the
gain setting is preserved when in power-down mode. Powering
down the AD8370 (bringing PWUP low while power is still
applied to the device) does not erase or change the GainCode
from the AD8370, and the same gain code is in place when the
device is powered up, that is, when PWUP is brought high again. Removing power from the device all together and
reapplying, however, reprograms to LG0.
Добавлено (06.01.2014, 23:13)
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4 PWUP Power Enable Pin. Device is operational when PWUP is pulled high.
5 VOCM Common-Mode Output Voltage Pin. The midsupply ((VVCCO − VOCOM)/2) common-mode voltage is delivered to this pin for external bypassing for additional common-mode supply decoupling. This can be achieved with a bypass capacitor to ground. This pin is an output only and is not to be driven externally.