DSA504RT datasheet(56/73 Pages) MICROCHIP

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DSA504RT

Electrical Characteristics

Preliminary Data Sheet

DS50004033A - 56

Table 6-8. AC Electrical Characteristics (continued)

Electrical Characteristics: Unless otherwise indicated, VDD = 3.3V ±10%, VDD = 2.5V ±10%, VDD = 1.8V +10%/-5%, CLOAD =

2pF, TA = –40°C to +105°C.

Parameter

Symbol

Min.

Typ.

Max.

Units Condition

Input-to-Output

Delay

tPD

—

TBD

—

PLL-Bypass mode

Output Enable Time

tEN

—

TBD

—

cycles Output frequency cycle

Output Disable

Time

tDIS

—

TBD

—

cycles Output frequency cycle

Frequency Stability

ΔfS

—

TBD

ppm —

Aging

ΔfA

—

±5

ppm 1st year @ 25⁰C

—

±1

ppm Per year after 1st year

RMS Jitter

Generation, PLL

Locked to External

Crystal Oscillator.

JGENMO

—

130

—

INT Mode, 12kHz to 20 MHz @ 100 MHz,

Note 7

—

150

—

FRAC Mode, 12 kHz to 20 MHz @ 100

MHz, Note 7

RMS Jitter as per

PCIe 5.0 (PLL_BW =

0.5 to 1.8MHz, CDR

for 32 GT/s CC)

tjPCIe_5.0

—

SSC off

—

SSC – 0.3%

—

SSC – 0.5%

RMS Jitter as per

PCIe 6.0 (PLL_BW =

0.5 to 1MHz, CDR

for 64 GT/s CC)

tjPCIe_6.0

—

SSC off

—

SSC – 0.3%

—

SSC – 0.5%

RMS Jitter as per

PCIe 7.0 (PLL_BW =

0.35 to 1.8MHz, CDR

for 128 GT/s CC)

tjPCIe_7.0

—

SSC off

—

SSC – 0.3%

—

SSC – 0.5%

Spread Spectrum

Modulation

Frequency

fSSC

—

kHz

—

Spread Spectrum

Frequency Deviation

fSSCdev

–2.5

—

2.5

Center Spread

–2.5

—

Down Spread

1. Measurement taken from a single-ended waveform.

2. Defined as the maximum instantaneous voltage including overshoot.

3. Defined as the minimum instantaneous voltage including undershoot.

4. Noise spur amplitude measured with 100mVPP sine wave added to 3.3V VCCO for 156.25MHz carrier frequency.

5. Measured across two adjacent LVDS outputs with the victim running at 155.52MHz and the aggressor running at

156.25MHz, other outputs being disabled.

6. Measurement taken from differential waveform.

7. All jitter measurements are done with one output enabled @ 100MHz and set to LPHCSL differential format.

6.4.1.

LVPECL AC Electrical Characteristics

The following table lists the LVPECL AC electrical characteristics details.

DSA504RT Datasheet(PDF) 56 Page - Microchip Technology

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