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Spectrum Device
SSDCP1108AF
General Purpose Peak EMI reduction IC
General Features
DC coupled to XIN/CLKIN)and locks on to it delivering a 1x modulated clock output.SSDCP1108AF has a SSON pin for enabling
and
disabling
Timing-Safeʳ
Spread
Spectrum function.•1x, LVCMOS Peak EMI Reduction
•Incorporates the latest Timing-Safe
technology
••which allows the spread of analog video signal Input frequency: 0MHz40MHz @ 3.3V
Output frequency : 0MHz40MHz @ 3.3V
SSDCP1108AF has an SSEXTR pin to select different
deviations depending upon the value of an external resistor connected between SSEXTR and GND.Charge Pump(CP)
control
selects
one
of
the
two
different
Charge
Pump
current settings.SSDCP1108AF operates from a 3.3V/2.5V supply, and
is available
in
an
pin
TDFN(2X2)
COL packages, over Commercial temperature range.•Analog Deviation Selection
•Spread Spectrum Enable/Disable •Supply Voltage: 2.5V±0.2V
3.3V±0.3V
•8pin TDFN(2X2)COL Packages •Commercial temperature range
Application
Functional Description
•SSDCP1108AF is targeted for consumer electronics
application such as MFP, STB, DSC, MID,HDMI,LCD panel
Camcorder,and other timing sensitive analog video imaging applications
SSDCP1108AF is a versatile, 3.3V/2.5V Peak EMI reduction IC.SSDCP1108AF accepts an input clock either from a or fundamental Crystal or from an external reference(AC •
Applications of HDMI, RJ45 port has good compatibility Block Diagram
SSON CP
VDD
XIN/CLKIN
XOUT Crystal Oscillator
PLL ModOUT
GND
SSEXTR
1/9 Spectrum Device
SSDCP1108AF
Pin Configuration
XIN / CLKIN VDD
XOUT SSON SSEXTR
SSDCP1108AF
SSDCP1108A CP
GND 4 ModOUT
Pin Description Pin # Pin Name 1 XIN / CLKIN 2 3 4 XOUT SSON GND Pin Type
I O I P
Description
Crystal connection or External reference clock input.Crystal connection.If using an external reference, this pin should be left open.Spread Spectrum ON/OFF.Spread Spectrum function enabled when HIGH, disabled when LOW.Has an internal pull-up resistor inside.Ground
Modulated clock output
Charge Pump current Select.When LOW selects Low CP current.Selects High CP current when pulled HIGH.Has an internal pull-up resistor inside.Analog Deviation Selection through external resistor to GND.2.5V / 3.3V supply Voltage.5 6 7 8 ModOUT CP SSEXTR VDD O I I P
Frequency Selection table
VDD(V)Frequency(MHz)2.5 3.3 15-35 15-40
Operating Conditions
Parameter
VDD
Description
Supply Voltage
Operating Temperature(Ambient Temperature)Load Capacitance Input Capacitance
Min 2.3 0
Max 3.6 +70 10 7
Unit V °C pF pF
T
A C
L CIN
2/9 Spectrum Device
SSDCP1108AF
Absolute Maximum Rating
Symbol
VDD, VIN
Parameter
Voltage on any input pin with respect to Ground
Storage temperature
Max.Soldering Temperature(10 sec)Junction Temperature
Rating
-0.5 to +4.6-65 to +125
260 150 2
Unit V
°C °C °C KV TSTG Ts TJ TDV
Static Discharge Voltage
(As per JEDEC STD22-A114-B)
Note: These are stre ratings only and are not implied for functional use.Exposure to absolute maximum ratings for prolonged periods of time may affect
device reliability.DC Electrical Characteristics for 2.5V Parameter Description
Supply Voltage Input LOW Voltage Input HIGH Voltage Input LOW Current Input HIGH Current Output LOW Voltage Output HIGH Voltage Static Supply Current Dynamic Supply Current Output Impedance
VIN = 0V
1.7
Test Conditions Min
2.3
Typ
2.5
Max
2.7 0.7
Unit
V V V VDD VIL VIH IIL IIH VOL VOH ICC IDD Zo
VIN = VDD
IOL = 8mA
=-8mA
IOH
XIN / CLKIN pulled low Unloaded Output 25 0.6
1.8
12
µA µA V V µA mA
Switching Characteristics for 2.5V
Parameter
Input Frequency* / ModoUT Duty Cycle 1, 2
1, 2 1,2
Test Conditions Min
Typ Max
Unit 45
55 2.2 2
MHz % nS nS pS Measured at VDD /2
Measured between 20% to 80% Measured between 80% to 20%
Unloaded output with SSEXTR OPEN @ 27MHz Stable power supply, valid clock presented on XIN / CLKIN Output Rise Time Output Fall Time
Cycle-to-Cycle Jitter PLL Lock Time 2
±175
mS
Note: 1.All parameters are specified with 10pF loaded outputs.2.Parameter is guaranteed by design and characterization.Not 100% tested in production
* Functionality with Crystal is guaranteed by design and characterization.Not 100% tested in production.3/9 Spectrum Device
SSDCP1108AF
DC Electrical Characteristics for 3.3V Parameter Description
Supply Voltage Input LOW Voltage Input HIGH Voltage Input LOW Current Input HIGH Current Output LOW Voltage Output HIGH Voltage Static Supply Current
VIN = 0V
2.0
Test Conditions Min
3.0
Typ
3.3
Max
3.6 0.8
Unit
V V V
VDD VIL VIH IIL IIH VOL VOH ICC IDD Zo
VIN = V
DD
IOL = 8mA 25 0.4
2.4
µA µA V V
=-8mA IOH
XIN / CLKIN pulled low Unloaded Output
Dynamic Supply Current
Output Impedance
mA
µA
Switching Characteristics for 3.3V
Parameter
Input Frequency* / ModOUT Duty Cycle 3, 4
3, 4 3, 4
Test Conditions Min
Typ Max
Unit 45
55 1.8 1.6
MHz % nS nS pS Measured at VDD /2
Measured between 20% to 80% Measured between 80% to 20%
Unloaded output with SSEXTR OPEN @ 27MHz Stable power supply, valid clock presented on XIN / CLKIN Output Rise Time Output Fall Time
Cycle-to-Cycle Jitter PLL Lock Time 4
±150
mS
Note: 3.All parameters are specified with10pF loaded outputs.4.Parameter is guaranteed by design and characterization.Not 100% tested in production.* Functionality with Crystal is guaranteed by design and characterization.Not 100% tested in production.4/9 Spectrum Device
SSDCP1108AF
Typical Crystal Specifications
Fundamental AT cut parallel resonant crystal Nominal frequency Frequency tolerance Operating temperature range Storage temperature Load capacitance(C P)Shunt capacitance ESR
27MHz
± 50 ppm or better at 25°C 0°C to +70°C-40°C to +85°C 18pF
7pF maximum 25
Note: C L is the Load Capacitance and Rx is used to prevent oscillations at overtone frequency of the Fundamental frequency.Typical Crystal Interface Circuit
SSDCP1108A
R
XIN/CLKIN
Crystal
XOUT
Rx
CL
CL
CL = 2*(C PTAPE & REEL, Green
0 °C to +70 °C
Device Ordering Information
S S D C P 1 0 8 A
F C R
R = Tape & Reel, T = Tube or Tray
O = TSOT23 S = SOIC T = TSSOP A = SSOP V = TVSOP B = BGA Q = QFN U = MSOP E = TQFP L = LQFP U = MSOP P = PDIP D = QSOP X = SC-70
J=TSOT26
C=TDFN(2X2)COL
DEVICE PIN COUNT
F = LEAD FREE AND RoHS COMPLIANT PART G = GREEN PACKAGE, LEAD FREE, and RoHS
PART NUMBER
I= Industrial(-40 °C to +85 °C)P or n/c = Commercial
(0 °C to +70)°C
A = Clock Generator
B = Non PLL based C = EMI Reduction
D = DDR support products E = STD Zero Delay Buffer
F = Power Management G = Power Management H = Power Management I = Hi Performance J = Reserved
Spread Spectrum Device CO.,LTD
Copyright All rights reserved by Spread Spectrum Device Part Number:SSDCP1108AF Document Version:0.22
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