MAX-7 / NEO-7 - Hardware Integration Manual
UBX-13003704 - R09 Production Information Design
Page 29 of 52
For more information about how to implement and configure OCD, see u-blox 7 Receiver Description
including Protocol Specification [4]
If the antenna supply voltage is not derived from VCC_RF, do not exceed the maximum voltage rating of
the AADET_N pin.
For more information, see section 3.4.3.1.
3.4.3.4 External active antenna supervisor using customer uP (NEO-7N, MAX-7Q, MAX-7C)
Figure 25: External active antenna supervisor using ANT_ON
RFVcc
R
RR
R
I
bias
_
32
2
Equation 2: Calculation of threshold current for open circuit detection
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