AD8128ACPZ-R2 datasheet(6/12 Pages) AD

6 / 12 page

AD8128

Data Sheet

Rev. A | Page 6 of 12

TYPICAL PERFORMANCE CHARACTERISTICS

TA = 25°C, VS = ±5 V, RL = 150 Ω, Belden cable, VOFFSET = 0 V, unless otherwise noted.

1.0

100

CABLE LENGTH (M)

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

VOUT = 2V p-p

RL = 150Ω

VPEAK

VGAIN

Figure 4. VPEAK and VGAIN Settings vs. Cable Length

–70

FREQUENCY (MHz)

–10

–20

–30

–40

–50

–60

0.1

100

VPEAK = 1V

VPEAK = 0.5V

VPEAK = 0V

Figure 5. Frequency Response for Various VPEAK Settings Without Cable

–70

FREQUENCY (MHz)

–10

–20

–30

–40

–50

–60

0.1

100

VGAIN = 1V

VGAIN = 0.5V

VGAIN = 0V

Figure 6. Frequency Response for Various VGAIN Settings Without Cable

–10

0.1

FREQUENCY (MHz)

–1

–2

–3

–4

–5

–6

–7

–8

–9

100

300

VPEAK AND VGAIN SETTINGS ARE CONSISTENT

WITH OPTIMIZED SETTINGS IN FIGURE 4

VOUT = 2V p-p

RL = 150Ω

Figure 7. Equalized Frequency Response for 50 M Cable

–10

0.1

FREQUENCY (MHz)

–1

–2

–3

–4

–5

–6

–7

–8

–9

100

300

VPEAK AND VGAIN SETTINGS ARE CONSISTENT

WITH OPTIMIZED SETTINGS IN FIGURE 4

VOUT = 2V p-p

RL = 150Ω

Figure 8. Equalized Frequency Response for 100 M Cable

1.5

–1.5

200

TIME (ns)

1.0

0.5

–0.5

–1.0

100 120 140 160 180

VPEAK AND VGAIN SETTINGS ARE

CONSISTENT WITH OPTIMIZED

SETTINGS IN FIGURE 4

Figure 9. Equalized Pulse Response for 50 M of Cable

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