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P1819 View Datasheet(PDF) - ON Semiconductor

Part Name
Description
View to exact match
P1819 Datasheet PDF : 6 Pages
1 2 3 4 5 6
P1819
Pin Configuration
XIN / CLKIN 1
VSS 2
SRS 3
ModOUT 4
P1819 B
8 XOUT
7 VDD
6 PD#
5 REF
XIN / CLKIN 1
VSS 2
D_C / NC 3
ModOUT 4
P1819 G
8 XOUT
7 VDD
6 PD#
5 REF
Pin Description
Pin#
P1819B
P1819G
1
1
2
2
3
3
3
4
4
5
5
6
6
7
7
8
8
Note: Pin 3 is NC in P1819Q.
Pin Name Type
Description
Crystal Connection or external frequency input. This pin
XIN / CLKIN
I
has dual functions. It can be connected to either an
external crystal or an external reference clock.
VSS
P
Ground Connection. Connect to system ground.
SRS
D_C / NC
ModOUT
REF
PD#
Spread range select. Digital logic input used to select
I
frequency deviation (Refer to Spread Deviation Selection
Table). This pin has an internal pull-up resistor.
Digital logic input used to select Down (LOW) or Center
I
(HIGH) spread options (Refer to Spread Deviation
Selection Table). This pin has an internal pull-up
resistor.
Spread spectrum clock output. (Refer to Input Frequency
O
and Modulation Rate Table and Spread Deviation
Selection Table).
O
Non-modulated Reference clock output of the input
frequency.
Power down control pin. Pull XIN/CLKIN and PD# LOW
I
to enable Power-Down mode. This pin has an internal
pull-up resistor.
VDD
P
Power Supply for the entire chip.
XOUT
Crystal Connection. Input connection for an external
O
crystal. If using an external reference, this pin must be
left unconnected.
Input Frequency and Modulation Rate
Part Number
Input Frequency Range
P1819
20MHz to 40MHz
Output Frequency range
20MHz to 40MHz
Modulation rate
Input Frequency / 896
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