Table 6-2. EQ Configuration Options for 1200mV Linearity 0dB DC Gain Setting

EQ SETTING #

CHx_EQ2 PIN LEVEL

CHx_EQ1 PIN LEVEL

EQ GAIN at 2.5GHz / 5GHz (dB)

1

0

0

1.0 / 3.6

2

0

R

2.1 / 5.5

3

0

F

3.0 / 6.8

4

0

1

4.0 / 8.1

5

R

0

4.6 / 9.0

6

R

R

5.5 / 10.0

7

R

F

6.2 / 10.8

8

R

1

6.9 / 11.6

9

F

0

7.3 / 11.9

10

F

R

7.9 / 12.6

11

F

F

8.4 / 13.1

12

F

1

9.0 / 13.7

13

1

0

9.4 / 14.1

14

1

R

9.9 / 14.6

15

1

F

10.3 / 14.9

16

1

1

10.7 / 15.3

6.3.3 Adjustable VOD Linear Range and DC Gain

The CFG1 and CFG2 pins can be used to adjust the TUSB1002A output voltage swing linear range and receiver

equalization DC gain. Table 6-3 details the available options.

For best performance, make sure to operate the TUSB1002A within the defined VOD linearity range. Keep

the gain of the incoming VID to less than or equal to the TUSB1002A VOD linear range setting. The can be

determined by Equation 1:

VID at 5GHz = VOD x (10-(Gv/20))

(1)

where

• Gv = TUSB1002A Gain and VOD = TUSB1002A VOD linearity setting.

For example, for a VOD linearity range setting of 1200mV, the maximum incoming VID signal at 5GHz with a

CHx_EQ[1:0] setting of 2 (5.5dB) is 1200 x (10-(5.5/20)) = 637mVpp. The TUSB1002A can operate outside VOD

linear range, but the jitter will be higher.

Table 6-3. VOD Linear Range and DC Gain

SETTING #

CFG1 PIN LEVEL

CFG2 PIN LEVEL

CH1 DC GAIN (dB)

CH2 DC GAIN (dB)

CH1 VOD LINEAR

RANGE (mVpp)

CH2 VOD LINEAR

RANGE (mVpp)

1

0

0

+1

0

900

900

2

0

R

0

+1

900

900

3

0

F

0

0

900

900

4

0

1

+1

+1

900

900

5

R

0

0

0

1000

1000

6

R

R

+1

0

1000

1000

7

R

F

0

-1

1000

1000

8

R

1

+2

+2

1000

1000

9

F

0

-1

-1

1200

1200

10

F

R

+2

+2

1200

1200

11

F

F

0

0

1200

1200

12

F

1

+1

+1

1200

1200

13

1

0

+2

0

1200

1200

14

1

R

0

+2

1200

1200

15

1

F

0

+1

1200

1200

TUSB1002A

SLLSF63C – MARCH 2018 – REVISED JULY 2024

www.ti.com

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