ML7436N LSI Hardware Design Manual
FEXL7436NDG-01
9
3.
TCXO circuit
Please use a TCXO that satisfy the following specification.
⚫
Output load:
10kΩ//10pF
⚫
Output level:
0.8Vpp to 1.5Vpp
⚫
Frequency accuracy:
Refer to
Table 2.2
The ML7436N integrates bias circuit and the DC bias is applied to the RF_XOUT (#48) pin. A 100pF capacitor should
be placed on the TCXO line as following
Figure 3.1
.
In ML7436N, RF_XIN(#1) pins is N.C. pin, then it should be open.
It is necessary to turn TCXO off to reduce electric comsumption, when Sleep mode set. Configure pull-up/pull-down on
the board to enable TCXO automatically that ML7436N does not need to control the waking up.
Figure 3.1
External oscillator circuit (TCXO) configurations
RF_XOUT(#48)
RF_XIN(#1)
Bias
100pF
TCXO
48MHz
