ICS841N254BI datasheet(6/24 Pages) IDT

6 / 24 page

ICS841N254BKI REVISION A NOVEMBER 6, 2013

ICS841N254BI Data Sheet

FEMTOCLOCK® NG CRYSTAL-TO-LVDS/HCSL CLOCK SYNTHESIZER

Table 6. AC Characteristics, VDD = VDDOA = VDDOB = 3.3V±5% or 2.5V±5%, TA = -40°C to 85°C

NOTES continued on next page.



Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

fOUT

Output Frequency

F_SEL [1:0] = 00

156.25

MHz

F_SEL [1:0] = 01

125

MHz

F_SEL [1:0] = 10

100

MHz

F_SEL [1:0] = 11

250

MHz

fREF

Reference Frequency

REF_CLK

MHz

tjit(Ø)

RMS Phase Jitter (Random);

NOTE 1

156.25MHz, Integration Range:

1MHz – 20MHz

0.27

156.25MHz, Integration Range:

12kHz – 20MHz

0.32

125MHz, Integration Range:

1MHz – 20MHz

0.33

125MHz,Integration Range:

12kHz – 20MHz

0.37



Single-Side Band Noise Power

156.25MHz, Offset: 100Hz

-91.6

dBc/Hz

156.25MHz, Offset: 1kHz

-120.8

dBc/Hz

156.25MHz, Offset: 10kHz

-132.2

dBc/Hz

156.25MHz, Offset: 100kHz

-135.0

dBc/Hz

PSNR

Power Supply Noise Rejection

From DC to 50MHz

-50

tsk(o)

Output Skew

NOTE 2, 3

Between QAx/nQAx & QBx/nQBx

1.8

2.7

tsk(b)

Bank Skew

NOTE 3, 4

tR / tF

Output Rise/Fall

Time

QAx, nQAx

20% to 80%

100

400

tLOCK

PLL Lock Time

VRB

Ring-back Voltage

Margin; NOTE 5, 6

QBx, nQBx

-100

100

tSTABLE

Time before VRB is

Allowed; NOTE 5, 6

QBx, nQBx

500

VMAX

Absolute Maximum

Output Voltage;

NOTE 7, 8

QBx, nQBx

1150

VMIN

Absolute Minimum

Output Voltage;

NOTE 7, 9

QBx, nQBx

-300

VCROSS

Absolute Crossing

Voltage;



NOTE 7, 10, 11

QBx, nQBx

100

350

V

CROSS

Total Variation of

VCROSS over all

edges;



NOTE 7, 10, 12

QBx, nQBx

140

Rise/Fall Edge Rate;

NOTE 5, 13

QBx, nQBx

Measured between

-150mV to 150mV

0.6

5.5

V/ns

odc

Output Duty Cycle;

NOTE 5

QBx, nQBx

Output Duty Cycle

QAx, nQAx

ICS841N254BI Datasheet(PDF) 6 Page - Integrated Device Technology

ICS841N254BI Datasheet(HTML) 6 Page - Integrated Device Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Datasheet Download

Link URL