TLK2711-SP_15 Datasheet, PDF (23/29 Pages) Texas Instruments – 1.6-Gbps to 2.5-Gbps Class V Transceiver

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TLK2711-SP
SGLS307N – JULY 2006 – REVISED DECEMBER 2015
Typical Application (continued)
9.2.1 Design Requirements
Input conditions in the data sheet were created and validated to achieve a bit error rate (BER) of 1 error in 1E12
bits or better. Other aspects that affect BER are power supply noise, quality (loss), and matching of 50-Ω
controlled impedance for transmit and receive differential pins.
9.2.2 Detailed Design Procedure
Detailed design procedures involve careful examination of system properties, design, and error rate goals.
Understanding these properties allows for creation of jitter budget to ensure design BER goals are achieved.
Application note SLLA071 is based on the TLK2500. The TLK2500 shares the same architecture and similar jitter
properties.
9.2.3 Application Curves
Figure 16 shows typical TTL output voltage characteristics at maximum 2-mA load at minimum V_CC = 2.375 V.
Figure 17 shows typical differential output voltage VOD(p) across temperature for each preemphasis condition at
minimum V_CC = 2.375 V.
2.5
850
2.0
800
1.5
750
VOH
1.0
VOL
700
0.5
0.0
±75 ±50 ±25
V_CC = 2.375 V
0 25 50 75
Temperature (ƒC)
I_OH/I_OL = ±2 mA
100 125 150
C001
Figure 16. V_OH/V_OL vs Temperature
650
600
±75 ±50 ±25 0
25 50 75
Temperature (ƒC)
V_CC = 2.375 V
V_OD (0) represents 5% emphasis enabled.
V_OD (1) represents 20% emphasis enabled.
VOD(1)
VOD(0)
100 125 150
C002
Figure 17. V_OD (0), V_OD (1) vs Temperature
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