ICS83054AGI-01 IDT, Integrated Device Technology Inc, ICS83054AGI-01 Datasheet - Page 7

• Manufacturer Part Number: ICS83054AGI-01
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Multiplexerr

Specifications of ICS83054AGI-01

• Number Of Clock Inputs: 2
• Mode Of Operation: Single-Ended
• Output Frequency: 250MHz
• Output Logic Level: LVCMOS/LVTTL
• Operating Supply Voltage (min): 2.375V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.465V
• Package Type: TSSOP
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Signal Type: LVCMOS/LVTTL
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Not Compliant

The spectral purity in a band at a specific offset from the
fundamental compared to the power of the fundamental is called
the dBc Phase Noise. This value is normally expressed using a
Phase noise plot and is most often the specified plot in many
applications. Phase noise is defined as the ratio of the noise power
present in a 1Hz band at a specified offset from the fundamental
frequency to the power value of the fundamental. This ratio is
expressed in decibels (dBm) or a ratio of the power in the 1Hz
As with most timing specifications, phase noise measurements
has issues relating to the limitations of the equipment. Often
the noise floor of the equipment is higher than the noise floor
of the device. This is illustrated above. The device meets the
IDT
ICS83054I-01
4-BIT, 2:1, SINGLE-ENDED MULTIPLEXER
™
/ ICS
™
4-BIT, 2:1, SINGLE-ENDED MULTIPLEXER
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
1k
10k
A
DDITIVE
O
FFSET
100k
F
ROM
P
HASE
C
ARRIER
7
band to the power in the fundamental. When the required offset
is specified, the phase noise is called a dBc value, which simply
means dBm at a specified offset from the fundamental. By
investigating jitter in the frequency domain, we get a better
understanding of its effects on the desired application over the
entire time record of the signal. It is mathematically possible to
calculate an expected bit error rate given a phase noise plot.
noise floor of what is shown, but can actually be lower. The
phase noise is dependent on the input source and measurement
equipment.
J
ITTER
F
REQUENCY
1M
Additive Phase Jitter (Random)
(H
at 155.52MHz (12kHz - 20MHz)
Z
)
ICS83054I-01 REV. A February 20, 2009
10M
= 0.18ps (typical)
100M