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6.
Functional Description
6.1 Voltage Supply Settings
The voltage supply of TC32306FTG is selectable either 3V or 5V. The supply voltage is selected by setting
of 3V/5V pin, and it decides pin connections. At 5V use, connect 3V/5V pin to a voltage supply, then the
internal voltage regulator (A_REG30; for analog 3V) makes 3V (typ.) for internal circuit and outputs same
to A_VDD_3V pin for the matching of LNA and PA.
Pin Name
(Behavior of A_REG30 Regulator)
A_VDD_3V
A_VDD_5V
6.1.1
3V Use
At 3V use, connect 3V/5V pin to ground. Connect COM_VDD pin, A_VDD_3V pin and A_VDD_5V pin
to a stable 3V supply.
Notice:
-
Must not operate A_REG30 regulator for 5V use.
-
Must not connect COM_VDD pin to voltage supply out of range of V
Fig 6-1 Example of Voltage Supply Connection at 3V Use
6.1.2
5V Use
At 5V use, connect 3V/5V pin to the 5V supply. Connect A_VDD_5V pin and COM_VDD pin to a stable
5V supply.
Notice:
-
Must not connect A_VDD_3V pin to outside voltage supply.
-
Must not connect COM_VDD pin to voltage supply out of range of V
-
Must use a voltage supply from A_VDD_3V pin (output of A_REG30 regulator), for the matching
circuit of LNA and PA.
Table 6-1 Voltage Supply Pins Connection
3V/5V
COM_VDD
3V
(This figure is conceptual. Select bypass capacitors in application circuits.)
3V Use
GND
(Disable)
Output of A_REG30 Regulator
3V Supply Input
(Do not supply to external circuits.)
3V Supply Input
3V Supply Input
COM_VDD
A_VDD_5V
3V/5V
A_VDD_3V
11
TC32306FTG
5V Use
5V Supply Input
(Enable)
5V Supply Input
5V Supply Input
shown as Table 8-1.
DD(3V)
shown as Table 8-1.
DD(5V)
2015-10-01
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