ASM3P2474A Datasheet, PDF (2/7 Pages) Alliance Semiconductor Corporation – Low Power Peak EMI Reducing Solution

Pin Configuration (6L-TSOP Package)
ASM3P2474A
FSEL 1
6 VSS
XOUT 2 ^ASM3P2474A 5 _ModOUT
XIN / CLKIN ³
4 VDD
Pin Description
Pin# Pin Name
1
FSEL
2
XOUT
3 XIN / CLKIN
4
VDD
5
ModOUT
6
VSS
Type
I
O
I
P
O
P
Description
Selection Pin for 1X and 2X Output Frequency Options. Please refer to the table
Frequency Selection Options for further details.
Crystal connection. If using an external reference, this pin must be left unconnected.
Crystal connection or external reference frequency input. This pin has dual functions. It
can be connected either to an external crystal or an external reference clock.
Power supply for the entire chip.
Spread spectrum clock output.
Ground connection.
Modulation Profile
Specifications
Description
Frequency Range
Modulation Equation
Frequency Deviation
Frequency Selection Options
FSEL Pin
0
1
FSEL=0
FSEL=1
Specification
13MHz < CLKIN < 30MHz
FIN/640
-1.5% (Typ) @ 50MHz
-1.5% (Typ) @ 25MHz
Input Frequency (MHz)
13-30
13-30
Output Frequency (MHz)
26-60
13-30
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