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ICS307-03 Schematic ( PDF Datasheet ) - Integrated Circuit Systems

Teilenummer ICS307-03
Beschreibung SERIALLY PROGRAMMABLE CLOCK SOURCE
Hersteller Integrated Circuit Systems
Logo Integrated Circuit Systems Logo 




Gesamt 12 Seiten
ICS307-03 Datasheet, Funktion
ICS307-03
SERIALLY PROGRAMMABLE CLOCK SOURCE
Description
The ICS307-03 is a dynamic, serially programmable
clock source which is flexible and takes up minimal
board space. Output frequencies are programmed via
a 3-wire SPI port.
An advanced PLL coupled to an array of configurable
output dividers and three outputs allows low-jitter
generation of frequencies from 200 Hz to 270 MHz.
The device can be reprogrammed during operation,
making it ideal for applications where many different
frequencies are required, or where the output
frequency must be determined at run time. Glitch-free
frequency transitions, where the clock period changes
slightly over many cycles, are possible.
Features
Crystal or clock reference input
3.3 V CMOS outputs
Three outputs can be individually configured or shut
off
Small 16-pin TSSOP package
Reprogrammable during operation
3-wire SPI serial interface
Glitch-free output frequency switching
User selectable charge pump current and damping
resistor
Power-down control via hardware pin or software
control bit
Programming word can be generated by ICS
VersaClock II Software
Directly programmable via VersaClock II Software
and a Windows PC parallel port
Available in Pb (lead) free package
Block Diagram
(Table 1)
X1
REF Divide
1-2055
[Bit 122]
X2
Charge Pump
(Table 3)
CP 11pF
Resistor
(Table 4)
300
pF
VCO DIVIDE
12-2055
(Table 2)
DIN
CS
SCLK
Programming
Register
(132 bits)
Divider
2 - 8232
(Table 5)
[Bit 110]
CLK1
1
0
[Bit 123]
Divider
2 - 34
(Table 6)
[Bit 111]
CLK2
1
0
[Bit 124]
Divider
2 - 34
(Table 7)
[Bit 129]
CLK3
MDS 307-03 C
1
Revision 101705
Integrated Circuit Systems 525 Race Street, San Jose, CA 95126 tel (408) 297-1201 www.icst.com






ICS307-03 Datasheet, Funktion
ICS307-03
SERIALLY PROGRAMMABLE CLOCK SOURCE
Table 6. Output Divider for Output 2
Divide Value
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
Bits
117 116 115 114 113 Rule
1 1 1 1 0 output divide = ([117..114]+2)*2^[113])
11111
11101
11011
11001
10111
10101
10011
10001
01111
01101
01011
01001
00111
00101
00011
00001
Table 7. Output Divider for Output 3
Divide Value
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
Bits
121 120 119 118
1111
1111
1110
1101
1100
1011
1010
1001
1000
0111
0110
0101
0100
0011
0010
0001
0000
94 Rule
0 output divide = ([121..118]+2)*2^[94])
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
MDS 307-03 C
6
Revision 101705
Integrated Circuit Systems 525 Race Street, San Jose, CA 95126 tel (408) 297-1201 www.icst.com

6 Page









ICS307-03 pdf, datenblatt
ICS307-03
SERIALLY PROGRAMMABLE CLOCK SOURCE
Package Outline and Package Dimensions (16-pin TSSOP, 4.40 mm Body, 0.65 mm Pitch)
Package dimensions are kept current with JEDEC Publication No. 95, MO-153
16
INDEX
AREA
12
D
A
2
e
b
E1 E
Symbol
A
A1
A2
b
C
D
E
E1
e
L
α
aaa
A
A
1
-C-
SEATING
PLANE
aaa C
Millimeters
Inches
Min Max
-- 1.20
0.05 0.15
0.80 1.05
0.19 0.30
0.09 0.20
4.90
5.1
6.40 BASIC
4.30 4.50
0.65 Basic
0.45 0.75
0° 8°
-- 0.10
Min Max
-- 0.047
0.002 0.006
0.032 0.041
0.007 0.012
0.0035 0.008
0.193 0.201
0.252 BASIC
0.169 0.177
0.0256 Basic
0.018 0.030
0° 8°
-- 0.004
c
L
Ordering Information
Part / Order Number
ICS307G-03
ICS307G-03T
ICS307G-03LF
ICS307G-03LFT
Marking
ICS307G-03
ICS307G-03
307G-03LF
307G-03LF
Shipping packaging
Tubes
Tape and Reel
Tubes
Tape and Reel
Package
16-pin TSSOP
16-pin TSSOP
16-pin TSSOP
16-pin TSSOP
Temperature
0 to +70° C
0 to +70° C
0 to +70° C
0 to +70° C
Parts that are ordered with a "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant.
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS)
assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would
result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial
applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary
environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any
circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or
critical medical instruments.
MDS 307-03 C
12
Revision 101705
Integrated Circuit Systems 525 Race Street, San Jose, CA 95126 tel (408) 297-1201 www.icst.com

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