ICS2059-02
CLOCK MULTIPLIER AND JITTER ATTENUATOR
VCXO AND SYNTHESIZERS
Pin Assignment
X1
VDD
VDD
VDD
VIN
GND
GND
CHGP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
X2
ISEL
ICLK1
ICLK2
SEL0
CLK
SEL1
ISET
Output Frequency Select Table
Input
8 kHz
8 kHz
15.625 kHz
15.734265 kHz
151.875 kHz
27 MHz
SEL1 SEL0
0
0
1
1
M
M
0
1
0
1
0
1
N
1296
2430
1728
1716
128
1
Output Clock Crystal Used
(MHz)
(MHz)
10.368
20.736
19.44
19.44
27
27
27
27
19.44
19.44
27
27
16- pin ( 173 mil) TSSOP
Note: For SEL input pin programming:
0 = GND, 1 = VDD, M = Floating
Pin Descriptions
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Pin
Name
X1
VDD
VDD
VDD
VIN
GND
GND
CHGP
ISET
SEL1
CLK
SEL0
ICLK2
ICLK1
ISEL
Pin
Type
—
Power
Power
Power
Input
Power
Power
Output
—
Input
Output
Input
Input
Input
Input
Pin Description
Crystal Input. Connect this pin to the specified crystal.
Power Supply. Connect to +3.3 V.
Power Supply. Connect to +3.3 V.
Power Supply. Connect to +3.3 V.
VCXO Control Voltage Input. Connect this pin to CHGP pin and the
external loop filter as shown in this data sheet.
Connect to ground.
Connect to ground.
Charge Pump Output. Connect this pin to the external loop filter and to
pin VIN.
Charge pump current setting node, connection for setting resistor.
Output Frequency Selection Pin 1. Determines output frequency as
per table above. Includes mid-level input.
Clock Output.
Output Frequency Selection Pin 0. Determines output frequency as
per table above. Internal pull-up resistor.
Input Clock Connection 2. Connect an input reference clock to this pin.
If unused, connect to ground.
Input Clock Connection 1. Connect an input reference clock to this pin.
If unused, connect to ground.
Input Selection. Used to select which reference input clock is active.
Low input level selects ICLK1, high input level selects ICLK2. Internal
pull-up resistor.
Crystal Output. Connect this pin to the specified crystal.
16
X2
—
IDT™ / ICS™
CLOCK MULTIPLIER AND JITTER ATTENUATOR
2
ICS2059-02
REV E 051310
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
