ADCLK846SLASHPCBZ datasheet(3/16 Pages) AD

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ADCLK846

Rev. A | Page 3 of 16

SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

Typical values are given for VS = 1.8 V and TA = 25°C, unless otherwise noted. Minimum and maximum values are given over the full

VS = 1.8 V ± 5% and TA = −40°C to +85°C variations, unless otherwise noted. Input slew rate > 1 V/ns, unless otherwise noted.

Table 1.

Parameter

Symbol

Min

Typ

Max

Unit

Conditions

CLOCK INPUTS

Differential input

Input Frequency

1200

MHz

Input Sensitivity, Differential

150

mV p-p

Jitter performance is improved with higher slew

rates (greater voltage swing)

Input Level

1.8

V p-p

Larger voltage swings can turn on the protection

diodes and can degrade jitter performance

Input Common-Mode Voltage

VCM

VS/2 − 0.1

VS/2 + 0.05

Inputs are self-biased; enables ac coupling

Input Common-Mode Range

VCMR

0.4

VS − 0.4

Inputs are dc-coupled with 200 mV p-p signal

applied

Input Voltage Offset

Input Sensitivity, Single-Ended

150

mV p-p

CLK ac-coupled; CLK ac-bypassed to ground

Input Resistance (Differential)

kΩ

Input Capacitance

CIN

Input Bias Current (Each Pin)

−350

+350

μA

Full input swing

LVDS CLOCK OUTPUTS

Termination = 100 Ω; differential (OUTx, OUTx)

Output Frequency

1200

MHz

See Figure 9 for a swing vs. frequency plot

Differential Output Voltage

VOD

247

344

454

ΔVOD

Offset Voltage

VOS

1.125

1.25

1.375

ΔVOS

Short-Circuit Current

ISA, ISB

Each pin (output shorted to GND )

CMOS CLOCK OUTPUTS

Single-ended; termination = open

OUTx and OUTx in phase

Output Frequency

250

MHz

With 10 pF load each output; see Figure 16 for

swing vs. frequency

Output Voltage High

VOH

VS − 0.1

At 1 mA load

VS − 0.35

At 10 mA load

Output Voltage Low

VOL

0.1

At 1 mA load

0.35

At 10 mA load

Reference Voltage

VREF

Output Voltage

VS/2 − 0.1

VS/2

VS/2 + 0.1

±500 μA

Output Resistance

Output Current

500

μA

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