CY24713
Set-top Box Clock Generator with VCXO
Features
Benefits
■
Integrated phase-locked loop (PLL)
■
High-performance PLL tailored for Set Top Box applications
■
Low-jitter, high-accuracy outputs
■
Meets critical timing requirements in complex system designs
■
VCXO with analog adjust
■
Large ±150-ppm range, better linearity
■
3.3V Operation
■
Meet industry standard voltage platforms
■
8-pin SOIC
■
Industry standard packaging saves on board space
Part Number
Outputs
Input Frequency Range
Output Frequencies
CY24713
3
27-MHz pullable crystal input
per Cypress specification
4.9152 MHz, 13.5 MHz, 27 MHz
Logic Block Diagram
Pin Configuration
Figure 1. CY24713, 8-Pin SOIC
Table 1. Pin Definition
Name
Number
Description
XIN
1
Reference Crystal Input
VDD
2
3.3V Voltage Supply
VCXO
3
Input Analog Control for VCXO
VSS
4
Ground
CLK_B
5
13.5-MHz Clock Output
CLK_A
6
4.9152-MHz Clock Output
CLK_C
7
27-MHz Clock Output
8
Reference Crystal Output
XOUT
[1]
Note
1. Float XOUT if XIN is externally driven.
Cypress Semiconductor Corporation
Document #: 38-07396 Rev. *B
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised March 26, 2010
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CY24713
Absolute Maximum Conditions
Parameter
VDD
Description
Supply Voltage
[2]
Min
Max
Unit
–0.5
7.0
V
TS
Storage Temperature
–65
125
°C
TJ
Junction Temperature
–
125
°C
Digital Inputs
VSS – 0.3
VDD + 0.3
V
Digital Outputs referred to VDD
VSS – 0.3
VDD + 0.3
V
–
2000
V
–0.5
7.0
V
Electrostatic Discharge
Analog Input
Pullable Crystal Specifications
Parameter
Description
Condition
Min
Typ.
Max
Unit
–
27
–
MHz
–
14
–
pF
–
–
25
Ω
FNOM
Nominal crystal frequency
CLNOM
Nominal load capacitance
R1
Equivalent series resistance (ESR)
R3/R1
Ratio of third overtone mode ESR to fundamen- Ratio used because typical R1
tal mode ESR
values are much less than the
maximum spec.
3
–
–
DL
Crystal drive level
No external series resistor assumed
–
0.5
2.0
mW
F3SEPHI
Third overtone separation from 3*FNOM
High side
300
–
–
ppm
F3SEPLO
Third overtone separation from 3*FNOM
Low side
–
–
–150
ppm
C0
Crystal shunt capacitance
–
–
7
pF
C0/C1
Ratio of shunt to motional capacitance
180
–
250
C1
Crystal motional capacitance
14.4
18
21.6
pF
Min
Typ.
Max
Unit
3.135
3.3
3.465
V
0
–
70
°C
Parallel resonance, fundamental mode, AT cut
Fundamental mode
Recommended Operating Conditions
Parameter
Description
VDD
Operating Voltage
TA
Ambient Temperature
CLOAD
Max. Load Capacitance
tPU
Power up time for all VDDs to reach minimum specified voltage (power ramps
must be monotonic)
–
–
15
pF
0.05
–
500
ms
DC Electrical Characteristics
Description
Conditions
Min
Typ.
Max
Unit
IOH
Parameter
Output High Current
VOH = VDD – 0.5, VDD = 3.3V
12
24
–
mA
VOL = 0.5, VDD = 3.3V
12
24
–
mA
–
–
7
pF
IOL
Output Low Current
CIN
Input Capacitance
IIZ
Input Leakage Current
–
5
–
μA
fΔXO
VCXO pullability range
±150
–
–
ppm
VVCXO
VCXO input range
0
–
VDD
V
IVDD
Supply Current
–
25
30
mA
Note
2. Rated for 10 years
Document #: 38-07396 Rev. *B
Page 2 of 5
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CY24713
AC Electrical Characteristics (VDD = 3.3V)
Parameter[3]
Description
Conditions
Min
Typ.
Max
Unit
DC
Output Duty Cycle
Duty Cycle is defined in Figure 3 50% of VDD
45
50
55
%
ER0
Rising Edge Rate
Output Clock Edge Rate, Measured from 20% to
80% of VDD, CLOAD = 15 pF Figure 4.
0.8
1.4
–
V/ns
EF1
Falling Edge Rate
Output Clock Edge Rate, Measured from 80% to
20% of VDD, CLOAD = 15 pF Figure 4.
0.8
1.4
–
V/ns
t9
Clock Jitter
Peak-Peak period jitter maximum absolute jitter
–
200
250
ps
t10
PLL Lock Time
–
–
3
ms
Figure 2. Test Circuit
V DD
CLK out
0.1 μF
C LOAD
OUTPUTS
GND
Figure 3. Duty Cycle Definition; DC = t2/t1
t1
t2
CLK
50%
50%
Figure 4. Rise and Fall Time Definitions: ER = 0.6 x VDD/t3, EF = 0.6 x VDD/t4
t3
t4
80%
CLK
20%
Note
3. Not 100% tested
Document #: 38-07396 Rev. *B
Page 3 of 5
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CY24713
Ordering Information
Ordering Code
Package Type
Operating Range
Operating Voltage
CY24713KSXC
8-pin SOIC
Commercial
3.3V
CY24713KSXCT
8-pin SOIC-Tape and Reel
Commercial
3.3V
Pb-free
Package Diagram
Figure 5. 8-Pin (150-Mil) SOIC S8
51-85066 *D
Document #: 38-07396 Rev. *B
Page 4 of 5
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CY24713
Document History Page
Document Title: CY24713 Set-top Box Clock Generator with VCXO
Document Number: 38-07396
Rev.
ECN No.
Orig. of
Change
Submission
Date
**
333175
RGL
See ECN
New Data Sheet
*A
2440886
AESA
See ECN
Updated template. Added Note “Not recommended for new designs.”
Added part number CY24713KSXC, and CY24713KSXCT in ordering information table.
Replaced Lead-Free with Pb-Free.
*B
2899683
CXQ
03/26/10
Description of Change
Removed inactive parts from ordering information table
Updated package diagram
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assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where
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assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Use may be limited by and subject to the applicable Cypress software license agreement.
Document #: 38-07396 Rev. *B
Revised March 26, 2010
Page 5 of 5
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