GS2989 Dual-Slew-Rate, Dual-Output Cable Driver

with 3Gb/s Capability

Data Sheet

52133 - 4

December 2010

8 of 19

Output Return Loss

ORL

5 MHz – 1.485GHz

17

19

–

dB

6

1.485GHz – 2.97GHz

13

15

–

dB

6

Output Voltage Swing

750

800

850

4

Input Voltage Swing

Guaranteed

functional.

100

–

250

–

Guaranteed to meet all

published

specifications.

250

2200

–

Output Enable Delay

–

–

–

–

100

ns

–

Output Disable Delay

–

–

–

–

80

ns

–

NOTES:

1. The input coupling capacitor must be set accordingly for lower data rates.

2. Turning on input trace equalization will reduce jitter in most applications.

3. Rise/Fall time measured between 20% and 80% applies to 800mV output swing only.

4. Single-ended into a 75

Ω external load.

5. Calculated as the actual positive bit-width compared to the expected positive bit-width using a 1010 pattern.

6. ORL depends on board design. The GS2989 achieves this specification on Gennum's evaluation boards.

Table 2-2: AC Electrical Characteristics

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Notes