ICS503 データシートの表示（PDF） - Integrated Device Technology

部品番号

コンポーネント説明

メーカー

ICS503

LOCO™ PLL CLOCK MULTIPLIER

Integrated Device Technology 

ICS503

LOCO™ PLL CLOCK MULTIPLIER

CLOCK MULTIPLIER

External Components

Decoupling Capacitor

As with any high-performance mixed-signal IC, the

ICS503 must be isolated from system power supply

noise to perform optimally.

A decoupling capacitor of 0.01µF must be connected

between VDD and GND. It must be connected close to

the ICS503 to minimize lead inductance. No external

power supply filtering is required for the ICS503.

Series Termination Resistor

A 33Ω terminating resistor can be used next to the CLK

pin. The total on-chip capacitance is approximately 12

pF. A parallel resonant, fundamental mode crystal

should be used.

Crystal Load Capacitors

The device crystal connections should include pads for

small capacitors from X1 to ground and from X2 to

ground. These capacitors are used to adjust the stray

capacitance of the board to match the nominally

required crystal load capacitance. Because load

capacitance can only be increased in this trimming

process, it is important to keep stray capacitance to a

minimum by using very short PCB traces (and no vias)

between the crystal and device. Crystal capacitors, if

needed, must be connected from each of the pins X1

and X2 to ground.

The value (in pF) of these crystal caps should equal (CL

-12 pF)*2. In this equation, CL= crystal load capacitance

in pF. Example: For a crystal with a 16 pF load

capacitance, each crystal capacitor would be 8 pF

[(16-12) x 2] = 8.

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the ICS503. These ratings, which

are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the

device at these or any other conditions above those indicated in the operational sections of the

specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can

affect product reliability. Electrical parameters are guaranteed only over the recommended operating

temperature range.

Item

Supply Voltage, VDD

All Inputs and Outputs

Ambient Operating Temperature

Storage Temperature

Soldering Temperature

Rating

7V

-0.5 V to VDD+0.5 V

0 to +70° C

-65 to +150° C

260° C

Recommended Operation Conditions

Parameter

Ambient Operating Temperature

Power Supply Voltage (measured in respect to GND)

Min.

0

+3

Typ.

–

Max.

+70

+5.5

Units

°C

V

IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER

4

ICS503

REV D 051310

Share Link: