Datasheet AD8128 (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | CAT-5 Receiver with Adjustable Line Equalization |
| Seiten / Seite | 12 / 6 — AD8128. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 1.0. VOUT = 2V … |
| Revision | A |
| Dateiformat / Größe | PDF / 382 Kb |
| Dokumentensprache | Englisch |
AD8128. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 1.0. VOUT = 2V p-p. 0.9 R. L = 150Ω. (V) 0.8. 0.7. V GA. PEAK. 0.6. (dB). AND. K 0.5. TUDE
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Textversion des Dokuments
AD8128 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, VS = ±5 V, RL = 150 Ω, Belden cable, VOFFSET = 0 V, unless otherwise noted.
1.0 2 VOUT = 2V p-p 0.9 R 1 L = 150Ω 0 (V) 0.8 IN –1 0.7 V GA V –2 PEAK 0.6 (dB) AND –3 K 0.5 TUDE –4 V PEA NI –5 D 0.4 AG IZE M –6 0.3 TIM VGAIN –7 OP 0.2 V –8 PEAK AND VGAIN SETTINGS ARE CONSISTENT WITH OPTIMIZED SETTINGS IN FIGURE 4 0.1
003
V
012
–9 OUT = 2V p-p RL = 150Ω 0
05699-
–10
05699-
0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 300 CABLE LENGTH (M) FREQUENCY (MHz)
Figure 4. VPEAK and VGAIN Settings vs. Cable Length Figure 7. Equalized Frequency Response for 50 M Cable
30 2 VPEAK = 1V 20 1 0 10 –1 0 –2 (dB) –10 VPEAK = 0.5V (dB) –3 TUDE –20 VPEAK = 0V TUDE –4 NI NI –5 AG –30 AG M M –6 –40 –7 –50 V –8 PEAK AND VGAIN SETTINGS ARE CONSISTENT WITH OPTIMIZED SETTINGS IN FIGURE 4 –60
014
V
011
–9 OUT = 2V p-p RL = 150Ω –70
05699-
–10
05699-
0.1 1 10 100 1k 3k 0.1 1 10 100 300 FREQUENCY (MHz) FREQUENCY (MHz)
Figure 5. Frequency Response for Various VPEAK Settings Without Cable Figure 8. Equalized Frequency Response for 100 M Cable
10 1.5 VGAIN = 1V VGAIN = 0.5V 0 1.0 –10 VGAIN = 0V VPEAK AND VGAIN SETTINGS ARE 0.5 CONSISTENT WITH OPTIMIZED –20 (dB) SETTINGS IN FIGURE 4 T (V) TUDE –30 0 NI TPU U AG –40 O M –0.5 –50 –1.0 –60
013 010
–70
05699-
–1.5
05699-
0.1 1 10 100 1k 3k 0 20 40 60 80 100 120 140 160 180 200 FREQUENCY (MHz) TIME (ns)
Figure 6. Frequency Response for Various VGAIN Settings Without Cable Figure 9. Equalized Pulse Response for 50 M of Cable Rev. A | Page 6 of 12 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Maximum Power Dissipation ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUIT THEORY OF OPERATION INPUT COMMON-MODE VOLTAGE RANGE CONSIDERATIONS APPLICATIONS INFORMATION KVM APPLICATIONS DC CONTROL PINS CASCADED APPLICATIONS EXPOSED PAD (EP) LAYOUT AND POWER SUPPLY DECOUPLING CONSIDERATIONS EVALUATION BOARDS OUTLINE DIMENSIONS ORDERING GUIDE
TA = 25°C, VS = ±5 V, RL = 150 Ω, Belden cable, VOFFSET = 0 V, unless otherwise noted.
1.0 2 VOUT = 2V p-p 0.9 R 1 L = 150Ω 0 (V) 0.8 IN –1 0.7 V GA V –2 PEAK 0.6 (dB) AND –3 K 0.5 TUDE –4 V PEA NI –5 D 0.4 AG IZE M –6 0.3 TIM VGAIN –7 OP 0.2 V –8 PEAK AND VGAIN SETTINGS ARE CONSISTENT WITH OPTIMIZED SETTINGS IN FIGURE 4 0.1
003
V
012
–9 OUT = 2V p-p RL = 150Ω 0
05699-
–10
05699-
0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 300 CABLE LENGTH (M) FREQUENCY (MHz)
Figure 4. VPEAK and VGAIN Settings vs. Cable Length Figure 7. Equalized Frequency Response for 50 M Cable
30 2 VPEAK = 1V 20 1 0 10 –1 0 –2 (dB) –10 VPEAK = 0.5V (dB) –3 TUDE –20 VPEAK = 0V TUDE –4 NI NI –5 AG –30 AG M M –6 –40 –7 –50 V –8 PEAK AND VGAIN SETTINGS ARE CONSISTENT WITH OPTIMIZED SETTINGS IN FIGURE 4 –60
014
V
011
–9 OUT = 2V p-p RL = 150Ω –70
05699-
–10
05699-
0.1 1 10 100 1k 3k 0.1 1 10 100 300 FREQUENCY (MHz) FREQUENCY (MHz)
Figure 5. Frequency Response for Various VPEAK Settings Without Cable Figure 8. Equalized Frequency Response for 100 M Cable
10 1.5 VGAIN = 1V VGAIN = 0.5V 0 1.0 –10 VGAIN = 0V VPEAK AND VGAIN SETTINGS ARE 0.5 CONSISTENT WITH OPTIMIZED –20 (dB) SETTINGS IN FIGURE 4 T (V) TUDE –30 0 NI TPU U AG –40 O M –0.5 –50 –1.0 –60
013 010
–70
05699-
–1.5
05699-
0.1 1 10 100 1k 3k 0 20 40 60 80 100 120 140 160 180 200 FREQUENCY (MHz) TIME (ns)
Figure 6. Frequency Response for Various VGAIN Settings Without Cable Figure 9. Equalized Pulse Response for 50 M of Cable Rev. A | Page 6 of 12 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Maximum Power Dissipation ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUIT THEORY OF OPERATION INPUT COMMON-MODE VOLTAGE RANGE CONSIDERATIONS APPLICATIONS INFORMATION KVM APPLICATIONS DC CONTROL PINS CASCADED APPLICATIONS EXPOSED PAD (EP) LAYOUT AND POWER SUPPLY DECOUPLING CONSIDERATIONS EVALUATION BOARDS OUTLINE DIMENSIONS ORDERING GUIDE