ONSEMI PCS1P2860A

PCS1P2860A
Multi-Output Clock Synthesizer
Features
Product Description
• Generates multiple clock outputs from an
The PCS1P2860A is a Precision multi-PLL based
frequency synthesizer. Six Clock outputs are generated
using an inexpensive 25MHz Crystal or external
reference clock. The outputs consist of 25MHz Refout,
127MHz and four 125MHz clocks. SHUTDOWNB signal
tri-states all the clocks when enabled. The device
operates from a Supply Voltage of 3.3V ± 5%V. The
device is available in a 16-pin TSSOP JEDEC package.
inexpensive 25MHz crystal or external reference
clock
• Frequency outputs:
o 25MHz Reference clock
o 125MHz
o 127MHz
• Zero ppm frequency synthesis error for all CLK
outputs
Application
• 3.3V ± 5%V Supply Voltage
PCS1P2860A is targeted for use in high-end multimedia,
communications and consumer applications.
• Low jitter design
• Packaged in 16-pin TSSOP
• Compatible with CY22393XC-MZ2
• Advanced CMOS process
Block Diagram
AVDD
VDD
SHUTDOWNB
4
125MHz
CLKIN / XIN
Crystal
Oscillator
PLL
XOUT
127MHz
25MHz
GND
©2010 SCILLC. All rights reserved.
JANUARY 2010 – Rev. 1
Publication Order Number:
PCS1P2860/D
PCS1P2860A
Pin Diagram
Pin Description
Pin #
Pin Name
1
125MHz
1
16
SHUTDOWNB
VDD
2
15
NC
AGND
3
14
AVDD
XIN
4
13
NC
XOUT
5
12
NC
REFOUT
6
11
GND
125MHz
7
10
125MHz
125MHz
8
9
127MHz
PCS1P2860A
Pin Type
Pin Description
125MHz
Output
125MHz Clock Output.
2
VDD
Power
Connect to +3.3V.
3
AGND
Power
4
XIN
Input
5
XOUT
Output
6
REFOUT
Output
Connect to ground.
Crystal connection or external reference frequency input. It can be connected
to a 25MHz Fundamental mode crystal.
Connection to crystal. If using an external reference clock, this pin must be
left unconnected.
25MHz Reference Clock output.
7
125MHz
Output
125MHz Clock Output.
8
125MHz
Output
125MHz Clock Output.
9
127MHz
Output
127MHz Clock Output.
10
125MHz
Output
125MHz Clock Output.
11
GND
Power
Connect to ground.
12
13
14
15
NC
NC
AVDD
NC
16
SHUTDOWNB
Power
Input
No connection.
No connection.
Connect to +3.3V.
No connection.
Output Enable bit. When this pin is made HIGH, all clocks are enabled.
Tri-states all clocks when this pin is LOW .
Rev. 1 | Page 2 of 6 | www.onsemi.com
PCS1P2860A
Absolute Maximum Ratings
Symbol
VDD
VIN
TSTG
Parameter
Rating
Power Supply Voltage relative to Ground
Unit
-0.5 to +4.6
Input Voltage relative to Ground (Input Pins)
-0.5 to VDD+0.3
Storage temperature
V
-65 to +150
°C
Ts
Max. Soldering Temperature (10 sec)
260
°C
TJ
Junction Temperature
125
°C
2
KV
TDV
Static Discharge Voltage
(As per JEDEC STD22- A114-B)
Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect
device reliability.
Operating Conditions
Parameter
Description
Min
VDD / AVDD Operating Voltage
Typ
Max
Unit
3.3
3.465
V
70
°C
15
pF
3.135
TA
Operating Temperature (Ambient Temperature)
CL
Load Capacitance
CIN
Input Capacitance
0
5
DC Electrical Characteristics
Symbol
Parameter
Min
Typ
Max
Units
VDD / AVDD
Operating Voltage
3.135
3.3
3.465
V
VIH
Input High Voltage
2.2
VDD+0.3
V
VIL
Input Low Voltage
GND-0.3
1.0
V
IIH
Input HIGH current
VIN = VDD
30
µA
IIL
Input LOW current
VIN = GND
50
µA
VOH
Output High Voltage
VDD = 3.135, IOH = -12mA
VOL
Output Low Voltage
VDD = 3.135, IOL = 12mA
0.4
V
IOZ
Output Leakage Current
10
µA
ICC
Static Current
5.5
mA
IDD
Dynamic Current
Three-state outputs
CLKIN and SHUTDOWNB
Pins pulled low
No Load, All Clocks on
ZOUT
Conditions
pF
2.4
Nominal output impedance
Rev. 1 | Page 3 of 6 | www.onsemi.com
V
35
mA
30
Ω
PCS1P2860A
AC Electrical Characteristics
Symbol
CLKIN / XIN
CLK OUT
Parameter
Min
Input Frequency
Typ
Max
25
Output Frequency
Pin 6
25
Pin 1,7,8,10
125
Pin 9
127
Unit
MHz
MHz
1
tLH
Rising edge slew rate (Measured from 20% to 80%)
1.1
1.7
V/nS
1
Falling edge slew rate (Measured from 80% to 20%)
1.3
2
V/nS
1
Peak-to-peak Period Jitter @ VDD/2
300
pS
Synthesis Error (Output Frequency)
0
ppm
tHL
TPJ
1
tD
tLOCK
Output Duty Cycle @ VDD/2
45
PLL Lock Time from Power-Up
50
55
%
3
mS
NOTE: 1. CL= 15pF for outputs < 100MHz; CL = 10pF for outputs > 100MHz;
Typical Crystal Specifications
Fundamental AT cut parallel resonant crystal
Nominal frequency
25MHz
Frequency tolerance
± 50 ppm or better at 25°C
Operating temperature range
-25°C to +85°C
Storage temperature
-40°C to +85°C
Load capacitance(CP)
18pF
Shunt capacitance
7pF maximum
ESR
25 Ω
Note: Note: CL is Load Capacitance and Rx is used to prevent oscillations at overtone frequency of the Fundamental frequency.
Typical Crystal Interface Circuit
R
Crystal
CL
Rx
CL
CL = 2*(CP – CS),
Where CP = Load capacitance of crystal
CS = Stray capacitance due to CIN, PCB, Trace etc.
Rev. 1 | Page 4 of 6 | www.onsemi.com
PCS1P2860A
Package Information
16-lead Thin Shrunk Small Outline Package (4.40-MM Body)
1
8
PIN 1 ID
E
16
A
A2
e
A1
Seating Plane
C
θ
D
9
H
B
L
D
Dimensions
Symbol
Inches
Min
Millimeters
Max
A
Min
Max
0.043
1.20
A1
0.002
0.006
0.05
0.15
A2
0.031
0.041
0.80
1.05
B
0.007
0.012
0.19
0.30
C
0.004
0.008
0.09
0.20
D
0.193
0.201
4.90
5.10
E
0.169
0.177
4.30
4.50
e
0.026 BSC
0.65 BSC
H
0.252 BSC
6.40 BSC
L
0.020
0.030
θ
0°
8°
0.50
0.75
0°
8°
Rev. 1 | Page 5 of 6 | www.onsemi.com
PCS1P2860A
Ordering Information
Part Number
PCS1P2860AG-16TR
Marking
1P28
60A
Package
Temperature
16-Pin TSSOP, TAPE & REEL, Green
0°C to +70°C
A “microdot” placed at the end of last row of marking or just below the last row toward the center of package indicates Pb-free.
Licensed under US patent #5,488,627 and #5,631,920.
Note: This product utilizes US Patent #6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003.
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
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including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
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