Rainbow Electronics MAX31D80 - Manual

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Spread-Spectrum Clock Generators
MAX31C80/MAX31D80
General Description
The MAX31C80/MAX31D80 are spread-spectrum clock
generators that contain a phase-locked loop (PLL)
that generates a 2MHz to 134MHz clock from an input
clock or crystal. The PLL can provide a spread-spec-
trum down-dithered (MAX31D80) or center-dithered
(MAX31C80) frequency-modulated clock. The devices
also buffer the incoming clock and provide this output
on a separate pin.
The MAX31C80/MAX31D80 are provided in a 10-pin
TDFN package and operate over a full -40NC to +125NC
automotive temperature range. Devices can be factory
programmed for multiple combinations of input and out-
put frequencies (see the Ordering Information table). A
low-cost, low-frequency crystal can be used at the input
to generate frequencies up to 134MHz.
Features
S
2MHz_to_134MHz_Spread-Spectrum_Clock_
Generator
S
Input_Can_Be_Either_an_8MHz_to_34MHz_Crystal_or_
8MHz_to_134MHz_Clock
S
Factory-Programmable_Output_Frequencies_in_
2MHz_to_134MHz_Range
S
Low-Cost_Crystal_at_Low_Frequency_Used_to_
Generate_High_Frequencies
S
On-Board_PLL_is_Capable_of_Spread-Spectrum_
Frequency_Modulation
S
Down-_or_Center-Dither_Spread-Spectrum_
Frequency_Modulation
S
User-Configurable_Spread-Spectrum_Dither_
Magnitude
S
Low_Cycle-to-Cycle_Jitter
S
3.3V_Supply_Voltage
S
Temperature_Range:_-40NC_to_+125NC
S
Small_Package:_10-Pin_TDFN_(3mm_x_3mm_x_
0.8mm)
Applications
Graphics Cards
Set-Top Boxes
Automotive Infotainment
Printers
19-5214; Rev 0; 4/10
Typical Application Circuit
Ordering Information
xxx = Factory-programmable output frequency and dither rate (see the Selector Guide table).
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*EP = Exposed pad.
Selector Guide appears at end of data sheet.
MAX31D80
X1
SMSEL1
SMSEL0
GND
X2
XOUT 27MHz CLOCK
DECOUPLING
CAPACITOR
f IN = 27MHz
V CC
f IN = 27MHz
CLKOUT
V CC
f CLKOUT = 100MHz
1.5% DOWN DITHERED
V CC
PART TEMP_RANGE DITHER_MODE PIN-PACKAGE
MAX31C80T-xxx+ -40NC to +125NC Center 10 TDFN-EP*
MAX31C80T-xxx+T -40NC to +125NC Center 10 TDFN-EP*
MAX31D80T-xxx+ -40NC to +125NC Down 10 TDFN-EP*
MAX31D80T-xxx+T -40NC to +125NC Down 10 TDFN-EP*