CY25701JXC-ZZZ [CYPRESS]
Programmable High-Frequency Crystal Oscillator with Spread Spectrum (SSXO) and No-Spread Spectrum (XO) Option; 可编程高频晶体振荡器，带有扩频（ SSXO ）和无扩频（ XO ）选项
| 型号： | CY25701JXC-ZZZ |
| 厂家： | 
CYPRESS |
| 描述： | Programmable High-Frequency Crystal Oscillator with Spread Spectrum (SSXO) and No-Spread Spectrum (XO) Option |
| 文件： | 总7页 (文件大小：215K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CY25701JXC/FJXC
Programmable High-Frequency Crystal Oscillator with Spread
Spectrum (SSXO) and No-Spread Spectrum (XO) Option
Features
Benefits
• Crystal Oscillator with Spread Spectrum Clock (SSXO)
• No-Spread Spectrum (XO) Option
• Provides wide range of spread percentages for
maximum electromagnetic interference (EMI)
reduction, to meet regulatory agency electromagnetic
compliance (EMC) requirements. Reduces devel-
opment and manufacturing costs and time-to-market.
• Wide operating output clock frequency range of
10–166 MHz
• Programmable spread spectrum with nominal 31.5-kHz
modulation frequency
• This versatile programming feature enables the users
to switch between SSXO (with Spread) and XO (without
Spread) functions with ease.
• Center spread: ±0.25% to ±2.0%
• Down spread: –0.5% to –4.0%
• No spread: ± 0.0%
• Internal PLL to generate up to 166-MHz output.
• Suitable for most PC, consumer, and networking
applications
• Integrated phase-locked loop (PLL)
• 85 ps typical cycle-to-cycle Jitter with SSCLK = 133MHz
• 3.3V operation
• Application compatibility in standard and low-power
systems
• In-house programming of samples and prototype
quantities is available using the CY3672 programming
kit and CY3613 (JEC package) socket adapters.
Production quantities are available through Cypress’
value-added distribution partners or by using
third-party programmers from BP Microsystems, HiLo
Systems, and others.
• Output Enable function
• Package available in 4-pin Plastic JE
• Pb-free package
Pin Configuration
Logic Block Diagram
CY25701JXC/FJXC
4-pin Plastic JE
RFB
PLL
with
MODULATION
CONTROL
1
2
OE
VDD
4
3
CXIN
OUTPUT
DIVIDERS
and
SSCLK
PROGRAMMABLE
CONFIGURATION
VSS
3
SSCLK
MUX
CXOUT
1
OE
4
2
VDD
VSS
Cypress Semiconductor Corporation
Document #: 38-07684 Rev. *E
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised March 27, 2006
[+] Feedback
CY25701JXC/FJXC
Pin Definition
Pin
Name
Description
1
2
3
4
OE
Output Enable pin: Active HIGH. If OE = 1, SSCLK is enabled.
Power supply ground.
VSS
SSCLK
VDD
Spread spectrum clock output (with or without spread).
3.3V power supply.
Functional Description
Programming Description
The CY25701JXC/FJXC is a Spread Spectrum Crystal Oscil-
lator (SSXO) IC used for the purpose of reducing EMI found in
today’s high-speed digital electronic systems.
Field/Factory-Programmable CY25701JXC/FJXC
Field/Factory programming is available for samples and
manufacturing by Cypress and its distributors. All requests
must be submitted to the local Cypress Field Application
Engineer (FAE) or sales representative. Once the request has
been processed, you will receive a new part number, samples,
and data sheet with the programmed values. This part number
will be used for additional sample requests and production
orders.
The device uses a Cypress proprietary PLL and Spread
Spectrum Clock (SSC) technology to synthesize and modulate
the frequency of the embedded input crystal. By frequency
modulating the clock, the measured EMI at the fundamental
and harmonic frequencies are greatly reduced. This reduction
in radiated energy can significantly reduce the cost of
complying with regulatory agency (EMC) requirements and
improve time-to-market without degrading system perfor-
mance.
Additional information on the CY25701JXC/FJXC can be
obtained from the Cypress web site at www.cypress.com.
Output Frequency, SSCLK Output (SSCLK, pin 3)
The CY25701JXC/FJXC uses a programmable configuration
memory array to synthesize output frequency and spread%.
The modulated frequency at the SSCLK output is produced by
synthesizing from the embedded crystal oscillator frequency
input. The range of synthesized clock is from 10–166 MHz.
The spread% is programmed to either center spread or down
spread with various spread percentages. The range for center
spread is from ±0.25% to ±2.00%. The range for down spread
is from –0.5% to –4.0%. Contact the factory for smaller or
larger spread% amounts if required. Refer to Table 2 for
spread selection and no-spread values.
Spread Percentage (SSCLK, pin 3)
The SSCLK spread can be programmed to various spread
percentage values from ±0.25% to ±2.0% for Center Spread
and from –0.5% to –4.0% for Down Spread. Refer to Table 2
for available spread options. Enter ±0.0% (No spread) for XO
(Crystal Oscillator) without spread option.
The frequency modulated SSCLK output can be programmed
from 10–166 MHz.
The CY25701JXC/FJXC is available in a 4-pin plastic package
with operating temperature range of –20 to 70°C.
Frequency Modulation (SSCLK, pin 3)
The frequency modulation is programmed at 31.5 kHz for all
SSCLK frequencies from 10 to 166 MHz. Contact the factory
if a higher-modulation frequency is required.
Table 1. Programming Data Requirement
Pin Function
Pin Name
Pin#
Output Frequency
Spread Percent Code[1]
Frequency Modulation
SSCLK
SSCLK
SSCLK
3
3
3
%
Units
MHz
kHz
31.5
Program Value
ENTER DATA
ENTER DATA
Table 2. Spread Percent Selection
Center Spread
Code
Percentage
Code
A
B
C
±0.75%
J
D
E
F
Z
±0.25%
G
±0.5%
H
±1.0%
K
±1.5%
L
±2.0%
M
±0.0%
Z
Down Spread
Percentage
–0.5%
–1.0%
–1.5%
–2.0%
–3.0%
–4.0%
±0.0%
Note:
1. ±0.0% or Code “Z” for XO (No-Spread) option.
Document #: 38-07684 Rev. *E
Page 2 of 7
[+] Feedback
CY25701JXC/FJXC
Storage Temperature (Non-condensing) .... –55°C to +100°C
Junction Temperature................................ –40°C to +125°C
Data Retention @ Tj = 125°C................................> 10 years
Package Power Dissipation...................................... 350 mW
Absolute Maximum Rating
Supply Voltage (VDD).................................... –0.5V to +7.0V
DC Input Voltage....................................–0.5V to VDD + 0.5V
Operating Conditions
Parameter
VDD
Description
Min.
3.00
–20
–
Typ.
3.30
–
Max. Unit
Supply Voltage
3.60
70
V
°C
TA
Ambient Temperature
Max. Load Capacitance @ pin 3
CLOAD
FSSCLK
FMOD
TPU
–
15
pF
SSCLK output frequency, CLOAD = 15 pF
Spread Spectrum Modulation Frequency
10
–
166
33.0
500
MHz
kHz
ms
30.0
31.5
–
Power-up time for VDD to reach minimum specified voltage (power ramp must 0.05
be monotonic)
DC Electrical Characteristics
Parameter
Description
Condition
VOH = VDD – 0.5, VDD = 3.3V (source)
VOL = 0.5, VDD= 3.3V (sink)
CMOS levels, 70% of VDD
CMOS levels, 30% of VDD
Vin = VDD
Min.
10
Typ.
Max. Unit
IOH
IOL
VIH
VIL
IIH
Output High Current (pin 3)
Output Low Current (pin 3)
Input High Voltage (pin 1)
Input Low Voltage (pin 1)
Input High Current (pin 1)
Input Low Current (pin 1)
12
12
–
–
–
mA
mA
V
10
0.7VDD
VSS
–
VDD
0.3VDD
10
–
V
–
µA
µA
µA
pF
mA
IIL
Vin = VSS
–
–
10
IOZ
Output Leakage Current (pin 3) Three-state output, OE = 0
–10
–
–
10
[2]
CIN
Input Capacitance (pin 1)
Supply Current
Pin 1, or OE
5
7
IVDD
VDD = 3.3V, SSCLK = 10 to 166 MHz, CLOAD
= 0, OE = VDD
–
–
50
∆f
Aging
TA = 25°C, First year
–5
–
5
ppm
AC Electrical Characteristics[2]
Parameter
Description
Output Duty Cycle
Condition
Min.
45
–
Typ.
50
–
Max.
55
Unit
%
DC
tR
SSCLK, Measured at VDD/2
Output Rise Time
Output Fall Time
20%–80% of VDD, CL = 15 pF
2.7
ns
tF
20%–80% of VDD, CL = 15 pF
–
–
2.7
ns
[3]
TCCJ1
Cycle-to-Cycle Jitter SSCLK
(Pin 3)
SSCLK ≥133 MHz, Measured at VDD/2
25 MHz ≤ SSCLK <133 MHz, Measured at
VDD/2
–
85
215
200
400
ps
–
ps
SSCLK < 25 MHz, Measured at VDD/2
–
–
–
–
–
1% of
1/SSCK
s
TOE1
TOE2
Output Disable Time (pin1 = OE) Time from falling edge on OE to stopped
outputs (Asynchronous)
150
150
–
350
350
10
ns
ns
ms
Output Enable Time (pin1 = OE) Time from rising edge on OE to outputs at a
valid frequency (Asynchronous)
TLOCK
PLL Lock Time
Time for SSCLK to reach valid frequency
Notes:
2. Guaranteed by characterization, not 100% tested.
3. Jitter is configuration dependent. Actual jitter is dependent on output frequencies, spread percentage, temperature, and output load. For more information, refer
to the application note, “Jitter in PLL Based Systems: Causes, Effects, and Solutions” available at http://www.cypress.com/clock/appnotes.html, or contact your
local Cypress Field Application Engineer.
Document #: 38-07684 Rev. *E
Page 3 of 7
[+] Feedback
CY25701JXC/FJXC
Application Circuit
0.1 µF
Power
3
4
SSCLK
VDD
CY25701
VSS
2
OE
1
VDD
Figure 1. Application Circuit Diagram
Switching Waveforms
Duty Cycle Timing (DC = t1A/t1B
)
t
1B
t
1A
SSCLK
Figure 2. Duty Cycle Waveform
Output Rise/Fall Time
VDD
0V
SSCLK
Tr
Tf
Output Rise time (Tr) = (0.6 x V )/SR1 (or SR3)
DD
Output Fall time (Tf) = (0.6 x V )/SR2 (or SR4)
DD
Refer to AC Electrical Characteristics table for SR (Slew Rate) values.
Figure 3. Output Rise/Fall Time Waveform
Output Enable/Disable Timing
VDD
VIH
OUTPUT
ENABLE
TOE2
VIL
0V
High Impedance
SSCLK
(Asynchronous
)
TOE1
Figure 4. Output Enable/Disable Timing Waveforms
Document #: 38-07684 Rev. *E
Page 4 of 7
[+] Feedback
CY25701JXC/FJXC
Informational Graphs [4]
172.5
169.5
169
168.5
Spread Spectrum Profile: Fnom=166MHz,
Fmod=30kHz, Spread%= +/-1%
171.5
Spread Spectrum Profile: Fnom=166MHz,
Fmod=30kHz, Spread%= -4%
170.5
169.5
168
167.5
167
168.5
167.5
166.5
166.5
Fnominal
166
165.5
165
164.5
164
163.5
163
Fnominal
165.5
164.5
163.5
162.5
161.5
160.5
159.5
162.5
0
20
40
60
80
100 120 140
Time (us)
160 180 200
0
20
40
60
80
100
120
140 160 180
200
Time (us)
68.5
68
Spread Spectrum Profile: Fnom=66MHz,
Fmod=30kHz, Spread%= -4%
67.5
Spread Spectrum Profile: Fnom=66MHz,
Fmod=30kHz, Spread%= +/-1%
67
66.5
66
67.5
67
66.5
66
Fnominal
Fnominal
65.5
65
65.5
64.5
64
65
63.5
64.5
0
20
40
60
80
100
Time (us)
120
140 160
180
200
0
20
40
60 80
100 120 140 160 180 200
Time (us)
Ordering Information
Part Number[5,6]
Lead-free (Pb-free)
CY25701JXC–ZZZ
CY25701JXC–ZZZT
CY25701FJXC
Package description
Product Flow
4-Lead Plastic JE SMD
Commercial, –20° to 70°C
Commercial, –20° to 70°C
Commercial, –20° to 70°C
Commercial, –20° to 70°C
4-Lead Plastic JE SMD - Tape and Reel
4-Lead Plastic JE SMD
CY25701FJXCT
4-Lead Plastic JE SMD - Tape and Reel
Notes:
4. The “Informational Graphs” are meant to convey the typical performance levels. No performance specifications is implied or guaranteed. Refer to the tables on
pages 4 and 5 for device specifications.
5. “ZZZ” denotes the assigned product dash number. This number will be assigned by factory after the output frequency and spread percent programming data is
received from the customer.
6. “FJXC” suffix is used for products programmed in field by Cypress distributors.
Document #: 38-07684 Rev. *E
Page 5 of 7
[+] Feedback
CY25701JXC/FJXC
Package Drawings and Dimensions
4-Lead (10.2x5.6mm) JEC JE04A
10.2 0.ꢀ
(10.5 MAX)
4
1.0 0.2
(1.0)
ꢀ.6
5.0
5.6 0.2
(5.8 MAX)
1.0 0.2
(1.0)
1
1.ꢀ
2.1
+0.2
-0.1
2.5
2.4
(2.7 MAX)
4.6
0.1
0.15 0.1
0.51
(0.05 MIN)
5.08 0.1
DIMENSIONS IN MILLIMETERS
REFERENCE JEDEC: N/A
PKG. WEIGHT: 0.24 gms
5.08
RECOMMENDED SOLDERING PATTERN
51-85204-*A
All product and company names mentioned in this document are the trademarks of their respective holders.
Document #: 38-07684 Rev. *E
Page 6 of 7
© Cypress Semiconductor Corporation, 2006. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be
used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its
products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
[+] Feedback
CY25701JXC/FJXC
Document History Page
Document Title: CY25701JXC/FJXC Programmable High-Frequency Crystal Oscillator with Spread Spectrum (SSXO)
and No-Spread Spectrum (XO) Option
Document Number: 38-07684
Orig. of
REV.
**
ECN NO. Issue Date Change
Description of Change
224108
258974
See ECN
See ECN
RGL
RGL
New data sheet
*A
Corrected the product suffix (lead-free) in the ordering information table
Added note 4
*B
*C
*D
279379
392505
414085
See ECN
See ECN
See ECN
RGL
RGL
RGL
Added ordering part numbers
Added 4pin LCC SMD package
Added Spread OFF (XO) programming function
Edited CY3724 socket adapter
*E
436961
See ECN
RGL
Changed the Marketing part number from CY25701 to CY25701JXC/FJXC
Removed all Ceramic Package references
Document #: 38-07684 Rev. *E
Page 7 of 7
[+] Feedback
相关型号：
CY25701JXC-ZZZT
Programmable High-Frequency Crystal Oscillator with Spread Spectrum (SSXO) and No-Spread Spectrum (XO) Option
CYPRESS
CY25701LXC-ZZZT
Clock Generator, 166MHz, CMOS, CDSO4, 5 X 3.20 MM, LEAD FREE, CERAMIC, LCC-4
CYPRESS
CY25701LXCZZZT
Programmable High-Frequency Crystal Oscillator with Spread Spectrum (SSXO) and No-Spread Spectrum (XO) Option
CYPRESS
CY25701LXIZZZT
Programmable High-Frequency Crystal Oscillator with Spread Spectrum (SSXO) and No-Spread Spectrum (XO) Option
CYPRESS
CY25701_06
Programmable High-Frequency Crystal Oscillator with Spread Spectrum (SSXO) and No-Spread Spectrum (XO) Option
CYPRESS
CY25701_07
Programmable High Frequency Crystal Oscillator with Spread Spectrum (SSXO) and No Spread Spectrum (XO) Option
CYPRESS
©2020 ICPDF网 联系我们和版权申明