Cypress CY22180SXI-XXX Very low jitter field and factory programmable clock generator Datasheet

CY22180
PRELIMINARY
Very Low Jitter Field and Factory
Programmable Clock Generator
Features
Benefits
• Low period and cycle-to-cycle jitter
— Typical pk-pk period jitter: 60 ps
• Wide output frequency range
— Commercial temperature: 20–200 MHz
— Industrial temperature: 20–166 MHz
• Input frequency range
— External crystal: 10–30 MHz fundamental crystal
•
•
•
•
•
•
— External reference: 10–133 MHz clock
Integrated phase-locked loop (PLL)
Field programmable and factory programmed options
Programmable crystal load capacitor tuning array
3.3V operation
Commercial and industrial temperature ranges
Power down or output enable function
• Internal PLL generates up to 200 MHz output. Can generate
custom frequencies from an external crystal or a driven
source.
• In-house programming of samples and prototype quantities
can be done using the CY3672-USB programmer and
CY3619 socket adapter. Production quantities are available
through Cypress’s value added distribution partners or by
using third party programmers from BP Microsystems, HiLo
Systems, and others.
• Eliminates the need for expensive and difficult to use
higher-order crystals.
• Enables fine-tuning of output clock frequency by adjusting
CLoad of the crystal. Eliminates the need for external CLoad
capacitors.
• Application compatibility in standard and low-power
systems
• Enables low-power state or output clocks to High-Z state.
Logic Block Diagram
Pin Configuration
CY22180
8-pin SOIC
PLL
1
6
OUTPUT
DIVIDER
XIN/CLKIN
CLKOUT
CXIN
1 XIN/CLKIN
PROGRAMMABLE
CONFIGURATION
8
2 VDD
XOUT 8
NC 7
XOUT
CXOUT
5
3 PD#/OE
CLKOUT 6
4 VSS
REFOUT 5
REFOUT
3
PD# or OE
2
4
VDD
VSS
Cypress Semiconductor Corporation
Document #: 001-15577 Rev. **
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised May 10, 2007
CY22180
PRELIMINARY
Pin Description
Pin
Name
Description
1
XIN/CLKIN
Crystal input or reference clock input.
2
VDD
3.3V power supply.
3
PD#/OE
Power down pin, active LOW. If PD# = 0, the PLL and oscillator are powered down
and outputs are weakly pulled low.
Output enable pin, active HIGH. If OE = 1, CLKOUT and REFOUT are enabled.
User has the option of choosing either PD# or OE function.
4
VSS
Power supply ground.
5
REFOUT
Buffered reference output.
6
CLKOUT
Low jitter clock output.
7
NC
No connect. Leave this pin floating.
8
XOUT
Crystal output. Leave this pin floating if external clock is used.
General Description
The CY22180 is a low jitter clock generator for use in
networking,
telecommunication,
datacom,
consumer
electronics, and other general purpose applications. The
CY22180 offers a single programmable output and an optional
copy of the input frequency. The on-chip reference oscillator is
designed to run off a 10–30 MHz crystal, or a 10–133 MHz
external clock signal. The output frequency range is 20–200
MHz. The CY22180 comes in an 8-pin SOIC, and requires a
3.3V power supply.
Programming Description
Field Programmable (CY22180FSXC and CY22180FSXI)
The CY22180 is programmed at the package level, that is, in
a programmer socket. The CY22180 is flash technology
based, so the parts can be reprogrammed up to 100 times.
This enables fast and easy design changes and product
updates, and eliminates any issues with old and out-of-date
inventory.
Samples and small prototype quantities can be programmed
on the CY3672 programmer with the CY3619 socket adapter.
CyberClocks™ Online Software
CyberClocks Online Software is a web-based software application that allows the user to custom-configure the CY22180.
All the parameters in Table 1 given as “Enter Data” can be
programmed into the CY22180. CyberClocks Online outputs
an industry-standard JEDEC file used for programming the
CY22180.
CyberClocks
Online
is
available
at
www.cyberclocksonline.com through user registration. For
more information on the registration process refer to the
CY3672 data sheet.
CY3672-USB Programming Kit and CY3619 Socket
Adapter
The Cypress CY3672 FTG programmer and CY3619 socket
adapter are needed to program the CY22180. The socket
adapter comes with small prototype quantities of CY22180.
The CY3619 can be ordered separately, so existing users of
the CY3672-USB programmer need order only the socket
adapters to program the CY22180.
Factory Programmed CY22180
Factory programming is available for volume manufacturing by
Cypress. 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 (dash number) and samples with the
programmed values. This part number will be used for
additional sample requests and production orders.
Additional information on the CY22180 can be obtained from
the Cypress website at www.cypress.com.
Table 1.
Pin Function
Input Frequency
Total Xtal Load
Capacitance
Output Frequency
Reference
Output
Power-down or Output
Enable
Pin Name
XIN and XOUT
XIN and XOUT
CLKOUT
REFOUT
PD#/OE
Pin#
1 and 8
1 and 8
6
5
3
Unit
MHz
pF
MHz
On or Off
Select PD# or OE
Program Value
ENTER DATA
ENTER DATA
ENTER DATA
ENTER DATA
ENTER DATA
Document #: 001-15577 Rev. **
Page 2 of 8
CY22180
PRELIMINARY
Product Functions
Output Clock (CLKOUT, pin 6)
Input Frequency (XIN, pin 1 and XOUT, pin 8)
The output clock can be programmed to any frequency in the
range of 20–200 MHz.
The input to the CY22180 can be a crystal or a clock. The input
frequency range for crystals is 10 to 30 MHz, and for clock
signals is 10 to 133 MHz.
Reference Output (REFOUT, pin 5)
CXIN and CXOUT (pin 1 and pin 8)
The internal load capacitors at pin 1 (CXIN) and pin 8 (CXOUT)
can be programmed from 12 pF to 60 pF in 0.5-pF increments.
Thus, these programmable capacitors support crystals with CL
values between 6 pF and 30 pF. The crystal CL value, minus
board parasitic capacitance, is the value entered into CyberClocks Online Software.
If using a driven reference, CyberClocks Online Software will
set CXIN and CXOUT to the minimum value 12 pF.
The reference clock output has the same frequency as the
input clock. This output can be programmed to be enabled
(clock on) or disabled (High-Z, clock off) through CyberClocks
Online software. If this output is not needed, Cypress recommends that users request the disabled (High-Z, Clock Off)
option.
Power Down or Output Enable (PD# or OE, pin 3)
The CY22180 can be programmed to include either PD# or OE
function. PD# function can be used to power down the oscillator and PLL. The OE function disables the outputs but does
not turn off the PLL. PD# achieves lower power consumption,
but PLL start up time means that turn-on time is slower than
for OE.
Absolute Maximum Ratings
Supply Voltage (VDD) ........................................–0.5 to +7.0V
Data Retention @ Tj = 125°C................................> 10 years
DC Input Voltage...................................... –0.5V to VDD + 0.5
Package Power Dissipation...................................... 350 mW
Storage Temperature (Non-condensing)..... –55°C to +125°C
Static Discharge Voltage.......................................... > 2000V
(per MIL-STD-883, Method 3015)
Junction Temperature ................................ –40°C to +125°C
Recommended Crystal Specifications
Parameter
Description
Comments
Min.
Typ.
Max.
Unit
Parallel resonance, fundamental mode,
AT cut
10
–
30
MHz
FNOM
Nominal Crystal Frequency
CLNOM
Nominal Load Capacitance
6
–
30
pF
R1
Equivalent Series Resistance (ESR) Fundamental mode
–
–
25
Ω
DL
Crystal Drive Level
–
0.5
2
mW
Min.
Typ.
Max.
Unit
3.13
3.30
3.45
V
0
–
70
°C
–40
–
85
°C
No external series resistor assumed
Operating Conditions
Parameter
Description
VDD
Supply Voltage
TA
Ambient Commercial Temperature
Ambient Industrial Temperature
CLOAD
Max. Load Capacitance @ pin 5 and pin 6
–
–
10
pF
FXIN
External Reference Crystal
10
–
30
MHz
FCLKIN
External Reference Clock
10
–
133
MHz
FCLKOUT
CLKOUT frequency, Commercial Temperature
20
–
200
MHz
CLKOUT frequency, Industrial Temperature
20
–
166
MHz
FREFOUT
REFOUT frequency
10
–
133
MHz
TPU
Power-up time for all VDDs to reach minimum specified voltage (power ramp
must be monotonic)
0.05
–
500
ms
Document #: 001-15577 Rev. **
Page 3 of 8
CY22180
PRELIMINARY
l
DC Electrical Characteristics
Min
Typ
IOH
Parameter
Output High Current
Description
VOH = VDD – 0.5V, VDD = 3.3V (source)
Condition
10
12
Max
Unit
mA
IOL
Output Low Current
VOL = 0.5V, VDD = 3.3V (sink)
10
12
mA
VIH
Input High Voltage
CMOS levels, 70% of VDD
0.7VDD
–
VDD + 0.3
V
VIL
Input Low Voltage
CMOS levels, 30% of VDD
–0.3
–
0.3VDD
V
IIH
–
–
10
μA
IIL
Input High Current, PD#/OE VIN= VDD
Input Low Current, PD#/OE VIN = VSS, pull up disabled
–
–
10
μA
–
–
IOZ
Output Leakage Current
VIN = VSS, pull up enabled
CXIN or CXOUT
[1]
Three-state output, PD#/OE = 0
Programmable Capacitance Capacitance at minimum setting
at pin 1 and pin 8
Capacitance at maximum setting
–10
55
μA
10
μA
–
12
–
pF
–
60
–
pF
–
5
7
pF
CIN[1]
Input Capacitance at
PD#/OE
IDD
Supply Current
fIN = 10 MHz, fOUT = 33 MHz, REFOUT off
–
11
15
mA
IDDS
Standby current
Device powered down with PD# = 0V (driven
reference pulled down)
–
10
40
μA
Min
Typ
Max
Unit
AC Electrical Characteristics[1]
Parameter
DC
Description
Condition
Output Duty Cycle
CLKOUT < 125 MHz, Measured at VDD/2
45
50
55
%
Output Duty Cycle
CLKOUT > 125 MHz, Measured at VDD/2
40
50
60
%
Output Duty Cycle
REFOUT, Measured at VDD/2
Duty Cycle of CLKIN = 50%
45
50
55
%
SR1
Rising Edge Slew Rate
CLKOUT from 20 to 200 MHz;
REFOUT from 10 to 133 MHz. 20%–80% of VDD
2
3
–
V/ns
SR2
Falling Edge Slew Rate
CLKOUT from 20 to 200 MHz;
REFOUT from 10 to 133 MHz. 80%–20% of VDD
2
3
–
V/ns
TPJ1[2, 3]
CLKOUT pk-pk Period
Jitter, REFOUT off
CLKOUT = 20–200 MHz
–
–
75
(±38)
ps
TPJ2[2, 3]
CLKIN = 10 MHz, CLKOUT = 20, 33, 66, 80,
CLKOUT pk-pk Period
Jitter, REFOUT off, specific 106.25, 125, 133, or 200 MHz
frequencies
CLKIN = 25 MHz, CLKOUT = 125 MHz
–
–
60
(±30)
ps
–
–
56
(±28)
ps
CLKIN = 30 MHz, CLKOUT = 33, 66, 80, 106.25,
125, or 133 MHz
–
–
62
(±31)
ps
CLKIN = 66 MHz, CLKOUT = 33 or 66 MHz
–
–
47
(±24)
ps
CLKIN = 66 MHz, CLKOUT = 80, 106.25, 125,
133, 166, or 200 MHz
–
–
68
(±34)
ps
CLKIN = 133 MHz, CLKOUT = 33, 66, or 80 MHz
–
–
68
(±34)
ps
CLKIN = 133 MHz,
CLKOUT = 125, 133, or 166 MHz
–
–
52
(±26)
ps
Notes
1. Guaranteed by characterization, not 100% tested.
2. Jitter is configuration dependent. Actual jitter is dependent on XIN jitter and edge rate, number of active outputs, output frequencies, temperature, and output
load. For more information, refer to the application note, “Jitter in PLL Based Systems: Causes, Effects, and Solutions”.
3. Cycle-to-Cycle Jitter (peak) is always less than Period Jitter (peak-to-peak). Peak-to-Peak Period Jitter is the difference between the shortest and longest
measured periods.
Document #: 001-15577 Rev. **
Page 4 of 8
CY22180
PRELIMINARY
AC Electrical Characteristics[1]
Min
Typ
Max
Unit
TPJ3[2, 3]
Parameter
CLKOUT pk-pk Period
Jitter, REFOUT on
Description
CLKOUT = 20–200 MHz
Condition
–
150
(±75)
–
ps
TPJ4[2, 3]
REFOUT pk-pk Period Jitter REFOUT = 10-133 MHz
–
–
265
(±133)
ps
tSTP
Power Down Time
(pin 3 = PD#)
Time from falling edge on PD# to stopped outputs
(Asynchronous)
–
150
350
ns
TOE1
Output Disable Time
(pin 3 = OE)
Time from falling edge on OE to stopped outputs
(Asynchronous)
–
150
350
ns
TOE2
Output Enable Time
(pin 3 = OE)
Time from rising edge on OE to outputs at a valid
frequency (Asynchronous)
–
150
350
ns
tPU1
Power Up Time,
Crystal is used
Time from rising edge on PD# to outputs at valid
frequency (Asynchronous)
–
3.5
5
ms
tPU2
Power Up Time,
Reference clock is used
Time from rising edge on PD# to outputs at valid
frequency (Asynchronous), reference clock at
correct frequency
–
2
3
ms
Application Circuits[4, 5]
Crystal
Power
1 XIN/CLKIN
CLKIN
XOUT 8
1 XIN/CLKIN
XOUT 8
no
connect
NC 7
no
connect
Power
2
VDD
0.1uF
VDD or
control
NC 7
CY22180
3 PD#/OE
CLKOUT 6
4 VSS
REFOUT 5
no
connect
2
VDD
0.1uF
VDD or
control
CY22180
3 PD#/OE
CLKOUT 6
4 VSS
REFOUT 5
Notes
4. Since the load capacitors (CXIN and CXOUT) are provided by the CY22180, no external capacitors are needed on the XIN and XOUT pins to match the crystal
load capacitor (CL). Only a single 0.1-μF bypass capacitor is required on the VDD pin.
5. If an external clock is used, apply the clock to XIN (pin 1) and leave XOUT (pin 8) floating (unconnected).
Document #: 001-15577 Rev. **
Page 5 of 8
CY22180
PRELIMINARY
Switching Waveforms
Figure 1. Duty Cycle Timing (DC = t1A/t1B)
OUTPUT
t1A
t1B
Figure 2. Output Rise/Fall Time (CLKOUT and REFOUT)
VDD
OUTPUT
0V
Tr
Tf
Output Rise time (Tr) = (0.6 x VDD)/SR1 (or SR3)
Output Fall time (Tf) = (0.6 x VDD)/SR2 (or SR4)
Refer to AC Electrical Characteristics table for SR (Slew Rate) values.
Figure 3. Power Down Timing and Power Up Timing
POWER
DOWN
VDD
0V
VIH
VIL
tPU
High Impedance
CLKOUT
(Asynchronous)
tSTP
Figure 4. Output Enable/Disable Timing
OUTPUT
ENABLE
VDD
0V
VIH
VIL
TOE2
High Impedance
CLKOUT
(Asynchronous)
TOE1
Document #: 001-15577 Rev. **
Page 6 of 8
CY22180
PRELIMINARY
Ordering Information
Part Number[6]
Description
Product Flow
CY22180FSXC
Field Programmable, Pb-free
Commercial, 0 to 70°C
CY22180FSXI
Field Programmable, Pb-free
Industrial, –40 to 85°C
CY22180SXC-xxx
Factory Programmed, Pb-free
Commercial, 0 to 70°C
CY22180SXC-xxxT
Factory Programmed, Tape and Reel - Pb-free
Commercial, 0 to 70°C
CY22180SXI-xxx
Factory Programmed, Pb-free
Industrial, –40 to 85°C
CY22180SXI-xxxT
Factory Programmed, Tape and Reel - Pb-free
Industrial, –40 to 85°C
CY3672-USB
FTG programmer
n/a
CY3619
CY22180FSXC and CY22180FSXI Socket adapter
n/a
Package Diagrams
Figure 5. 8-Lead (150-Mil) SOIC S8
PIN 1 ID
4
1
1. DIMENSIONS IN INCHES[MM] MIN.
MAX.
2. PIN 1 ID IS OPTIONAL,
ROUND ON SINGLE LEADFRAME
RECTANGULAR ON MATRIX LEADFRAME
0.150[3.810]
0.157[3.987]
3. REFERENCE JEDEC MS-012
0.230[5.842]
0.244[6.197]
4. PACKAGE WEIGHT 0.07gms
PART #
S08.15 STANDARD PKG.
5
SZ08.15 LEAD FREE PKG.
8
0.189[4.800]
0.196[4.978]
0.010[0.254]
0.016[0.406]
SEATING PLANE
X 45°
0.061[1.549]
0.068[1.727]
0.004[0.102]
0.050[1.270]
BSC
0.004[0.102]
0.0098[0.249]
0°~8°
0.0138[0.350]
0.0192[0.487]
0.016[0.406]
0.035[0.889]
0.0075[0.190]
0.0098[0.249]
51-85066-*C
CyberClocks is a trademark of Cypress Semiconductor. All product and company names mentioned in this document are the
trademarks of their respective holders.
Note
6. “xxx” denotes the assigned product dash number for devices that are factory-programmed.
Document #: 001-15577 Rev. **
Page 7 of 8
CY22180
PRELIMINARY
Document History Page
Document Title: CY22180 Very Low Jitter Field and Factory Programmable Clock Generator
Document Number: 001-15577
REV.
ECN NO.
Issue Date
**
1058460
See ECN
Document #: 001-15577 Rev. **
Orig. of
Change
Description of Change
KVM/
New Data Sheet
KKVTMP
Page 8 of 8
© Cypress Semiconductor Corporation, 2007. 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.
Similar pages