GS2964 datasheet(7/17 Pages) SEMTECH

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GS2964 Adaptive Cable Equalizer

Data Sheet

51913 - 3

March 2010

7 of 17

2.3 AC Electrical Characteristics

Table 2-2: AC Electrical Characteristics

VCC = 3.3V ±5%, TA = -40°C to +85°C, unless otherwise shown

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Notes

Serial input data rate

DRSDO

–

143

–

2970

Mb/s

–

Input Voltage Swing

ΔV

SDI

TA =25°C, differential,

270Mb/s and 1.485Gb/s

720

800

950

mVp-p

TA =25°C, differential,

2.97Gb/s

720

800

880

mVp-p

Output Voltage Swing

ΔV

SDO

100Ω load, TA =25°C,

differential

650

800

950

mVp-p

–

Output Jitter of Various

Cable Lengths and Data

Rates

–

270Mb/s

Belden 1694A: 0-180m

–0.2

−

–

1.485Gb/s

Belden 1694A: 0-140m

–0.25

−

–2.97Gb/s

Belden 1694A: 0-100m

–0.35

−

Output Rise/Fall time

–

2.97Gb/s & 1.485Gb/s

20% - 80%

–

270Mb/s (see Section 4.6)

Mismatch in rise/fall time

–

Duty cycle distortion

–

Overshoot

–

Input Return Loss

–

Input Resistance

–

single ended

–

1.7

–

kΩ

–

Input Capacitance

–

single ended

–

Output Resistance

–

single ended

–

NOTES:

1. 0m cable length.

2. Based on characterization data using the recommended applications circuit, at VCC = 3.3V, TA = 25°C and 800mV launch swing from the SDI

cable driver.

3. Tested on GS2964 board from 5MHz to 3GHz.

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