GS2989

Final Data Sheet

Rev.6

GENDOC-052133

July 2015

8 of 20

Semtech

www.semtech.com

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 Disable Delay

—

—

—

—

80

ns

—

Output Enable Delay

—

All outputs disabled to

any output enabled.

——

4

μs—

—

One output enabled to

both outputs enabled.

—

—

500

ns

7

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 Semtech's evaluation boards.

7. This Output Enable Delay applies only to the newly enabled output. The output that is already enabled is not impacted in this case.

Table 2-3: AC Electrical Characteristics (Continued)

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Notes