|
|
Número de pieza | ICS270 | |
Descripción | Triple PLL Field Programmable VCXO Clock Synthesizer | |
Fabricantes | Integrated Circuit Systems | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de ICS270 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
No Preview Available ! PRELIMINARY INFORMATION
ICS270
Triple PLL Field Programmable VCXO Clock Synthesizer
Description
The ICS270 field programmable VCXO clock
synthesizer generates up to eight high-quality,
high-frequency clock outputs including multiple
reference clocks from a low-frequency crystal input. It
is designed to replace crystals and crystal oscillators in
most electronic systems.
Using ICS’ VersaClockTM software to configure PLLs
and outputs, the ICS270 contains a One-Time
Programmable (OTP) ROM for field programmability.
Programming features include VCXO, eight selectable
configuration registers and up to two sets of four
low-skew outputs.
Using Phase-Locked Loop (PLL) techniques, the
device runs from a standard fundamental mode,
inexpensive crystal, or clock. It can replace VCXOs,
multiple crystals and oscillators, saving board space
and cost.
The ICS270 is also available in factory programmed
custom versions for high-volume applications.
Features
• Packaged as 20-pin TSSOP
• Eight addressable registers
• Replaces multiple crystals and oscillators
• Output frequencies up to 200 MHz at 3.3 V
• Input crystal frequency of 5 to 27 MHz
• Up to eight reference outputs
• Up to two sets of four low-skew outputs
• Operating voltages of 3.3 V
• Controllable output drive levels
• Advanced, low-power CMOS process
• Available in Pb (lead) free packaging
Block Diagram
VDD 3
3
S2:S0
OTP
ROM
with
PLL
Values
VIN
X1
Crystal
X2
Voltage
Controlled
Crystal
Oscillator
External capacitors
are required.
PLL1
PLL2
PLL3
Divide
Logic
and
Output
Enable
Control
GND 2
PDTS
CLK1
CLK2
CLK3
CLK4
CLK5
CLK6
CLK7
CLK8
MDS 270 B
1
Revision 040705
Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
1 page PRELIMINARY INFORMATION
ICS270
Triple PLL Field Programmable VCXO Clock
Parameter
Storage Temperature
Soldering Temperature
Junction Temperature
Condition
Max 10 seconds
Recommended Operation Conditions
Min.
-65
Typ.
Max.
150
260
125
Units
°C
°C
°C
Parameter
Ambient Operating Temperature (ICS270PG/PGLF)
Ambient Operating Temperature (ICS270PGI/PGILF)
Power Supply Voltage (measured in respect to GND)
Power Supply Ramp Time
Reference crystal parameters
Min.
0
-40
+3.135
Typ.
Max.
+70
+85
+3.3 +3.465
4
Refer to page 3
Units
°C
°C
V
ms
DC Electrical Characteristics
Unless stated otherwise, VDD = 3.3 V ±5%, Ambient Temperature -40 to +85°C
Parameter
Symbol
Conditions
Min.
Operating Voltage
VDD
3.135
Config. Dependent - See
VersaClockTM Estimates
Operating Supply Current
Input High Voltage
Input High Voltage
Input Low Voltage
Input High Voltage, PDTS
Input Low Voltage, PDTS
Input High Voltage
Input Low Voltage
Output High Voltage
(CMOS High)
Eight 33.3333 MHz outs,
IDD PDTS = 1, no load, Note 1
PDTS = 0, no load, Note 1
VIH S2:S0
VDD/2+1
VIL S2:S0
VIH VDD-0.5
VIL
VIH ICLK
VDD/2+1
VIL ICLK
VOH IOH = -4 mA
VDD-0.4
Output High Voltage
Output Low Voltage
Short Circuit Current
VOH IOH = -8 mA (Low Drive);
IOH = -12 mA (High Drive)
VOL IOL = 8 mA (Low Drive);
IOL = 12 mA (High Drive)
IOS Low Drive
High Drive
2.4
Nom. Output Impedance
ZO
Typ.
27
500
±40
±70
20
Max.
3.465
0.4
0.4
VDD/2-1
0.4
Units
V
mA
mA
µA
V
V
V
V
V
V
V
V
V
mA
Ω
MDS 270 B
5
Revision 040705
Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
5 Page |
Páginas | Total 8 Páginas | |
PDF Descargar | [ Datasheet ICS270.PDF ] |
Número de pieza | Descripción | Fabricantes |
ICS270 | Triple PLL Field Programmable VCXO Clock Synthesizer | Integrated Circuit Systems |
Número de pieza | Descripción | Fabricantes |
SLA6805M | High Voltage 3 phase Motor Driver IC. |
Sanken |
SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |