Datasheet

MAX31180
Spread-Spectrum Crystal Multiplier
5Maxim Integrated
Pin Description
Pin Configuration
PIN NAME FUNCTION
1 X1
Crystal Drive/Clock Input. A crystal with the proper loading capacitors is connected across X1 and
X2. Instead of a crystal, a clock can be applied at the X1 input.
2 GND Signal Ground
3 CMSEL
Clock Multiplier Select. Tri-level digital input.
0 = 1x
Open = 2x
1 = 4x
4 SMSEL
Spread-Spectrum Magnitude Select. Tri-level digital input.
0 = Q0.5%
Open = Q1.0%
1 = Q1.5%
5
PDN
Active-Low Power-Down/Spread-Spectrum Disable. Tri-level digital input.
0 = Power-Down/SSO Three-Stated
Open = Power-Up/Spread Spectrum Disabled
1 = Power-Up/Spread Spectrum Enabled
6 SSO
Spread-Spectrum Clock Multiplier Output. Outputs a 1x, 2x, or 4x spread-spectrum version of the
crystal or clock applied at the X1/X2 pins.
7 V
CC
Supply Voltage
8 X2
Crystal Drive Output. A crystal with the proper loading capacitors is connected across X1 and X2.
If a clock is connected to X1, then X2 should be left open circuit.
SSO
PDNSMSEL
1
+
2
8
7
X2
V
CC
GND
CMSEL
X1
µSOP
TOP VIEW
3
4
6
5
MAX31180