No, there is none. You can deposit any sum to your deposit address and set any daily budget, that seems reasonable to you. The only limitation is technical: budgets less than 121 satoshis won’t be spent. Just mind checking the traffic estimations when you set a daily budget at Campaign -> Finances -> Budget page. Please note that traffic estimations might not be accurate, especially if you have a narrow targeting and low budgets.
Published on: 29 / 06 / 2020