Datasheet AD8000 (Analog Devices) - 15
| Hersteller | Analog Devices |
| Beschreibung | 1.5 GHz, Ultrahigh Speed Op Amp |
| Seiten / Seite | 18 / 15 — AD8000. Data Sheet. APPLICATIONS INFORMATION. +VS. 0.1. VIN. CIRCUIT … |
| Revision | C |
| Dateiformat / Größe | PDF / 510 Kb |
| Dokumentensprache | Englisch |
AD8000. Data Sheet. APPLICATIONS INFORMATION. +VS. 0.1. VIN. CIRCUIT CONFIGURATIONS. –V 0.1. –VS. VIDEO LINE DRIVER. 432. 4.7. CABLE. OUT
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AD8000 Data Sheet APPLICATIONS INFORMATION
All current feedback amplifier operational amplifiers are affected
+VS 10
F
by stray capacitance at the inverting input pin. As a practical
+ RF
consideration, the higher the stray capacitance on the inverting
0.1
F
input to ground, the higher RF needs to be to minimize peaking
FB RG
and ringing.
VIN – +V AD8000 VO V CIRCUIT CONFIGURATIONS O + RL –V 0.1
F
Figure 50 and Figure 51 show typical schematics for noninverting and inverting configurations. For current feedback amplifiers,
10
F
the value of feedback resistance determines the stability and
+
bandwidth of the amplifier. The optimum performance values are shown in Table 5 and should not be deviated from by more
–VS
05321-036 than ±10% to ensure stable operation. Figure 8 shows the influence Figure 51. Inverting Configuration varying RF has on bandwidth. In noninverting unity-gain configurations, it is recommended that an RS of 50 Ω be used,
VIDEO LINE DRIVER
as shown in Figure 50. The AD8000 is designed to offer outstanding performance as a video line driver. The important specifications of differential Table 5 provides a quick reference for the circuit values, gain, gain (0.02%), differential phase (0.01°), and 650 MHz bandwidth at and output voltage noise. 2 V p-p meet the most exacting video demands. Figure 52 shows a
+VS
typical noninverting video driver with a gain of +2.
10
F + RF 432 432 +VS 4.7
F 0.1
F FB + RG – +V 0.1
F FB AD8000 V 75 R O S V CABLE V O 75 IN + RL V AD8000 OUT –V 0.1
F 0.1
F 75 + 10
F 75 + CABLE 4.7
F VIN + –VS 75 –VS
05321-071
NONINVERTING
05321-035 Figure 52. Video Line Driver Figure 50. Noninverting Configuration
Table 5. Typical Values (LFCSP/SOIC) Component −3 dB SS Bandwidth −3 dB LS Bandwidth Slew Rate Output Noise Total Output Noise Including Gain Values (Ω) (MHz) (MHz) (V/μs) (nV/√Hz) Resistors (nV/√Hz) RF RG LFCSP SOIC LFCSP SOIC
1 432 1380 1580 550 600 2200 10.9 11.2 2 432 432 600 650 610 650 3700 11.3 11.9 4 357 120 550 550 350 350 3800 10 12 10 357 40 350 365 370 370 3200 18.4 19.9 Rev. C | Page 14 of 17 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION CONNECTION DIAGRAMS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS WITH ±5 V SUPPLY SPECIFICATIONS WITH +5 V SUPPLY ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE MAXIMUM POWER DISSIPATION ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS APPLICATIONS INFORMATION CIRCUIT CONFIGURATIONS VIDEO LINE DRIVER LOW DISTORTION PINOUT EXPOSED PADDLE PRINTED CIRCUIT BOARD LAYOUT SIGNAL ROUTING POWER SUPPLY BYPASSING GROUNDING OUTLINE DIMENSIONS ORDERING GUIDE
AD8000 Data Sheet APPLICATIONS INFORMATION
All current feedback amplifier operational amplifiers are affected
+VS 10
F
by stray capacitance at the inverting input pin. As a practical
+ RF
consideration, the higher the stray capacitance on the inverting
0.1
F
input to ground, the higher RF needs to be to minimize peaking
FB RG
and ringing.
VIN – +V AD8000 VO V CIRCUIT CONFIGURATIONS O + RL –V 0.1
F
Figure 50 and Figure 51 show typical schematics for noninverting and inverting configurations. For current feedback amplifiers,
10
F
the value of feedback resistance determines the stability and
+
bandwidth of the amplifier. The optimum performance values are shown in Table 5 and should not be deviated from by more
–VS
05321-036 than ±10% to ensure stable operation. Figure 8 shows the influence Figure 51. Inverting Configuration varying RF has on bandwidth. In noninverting unity-gain configurations, it is recommended that an RS of 50 Ω be used,
VIDEO LINE DRIVER
as shown in Figure 50. The AD8000 is designed to offer outstanding performance as a video line driver. The important specifications of differential Table 5 provides a quick reference for the circuit values, gain, gain (0.02%), differential phase (0.01°), and 650 MHz bandwidth at and output voltage noise. 2 V p-p meet the most exacting video demands. Figure 52 shows a
+VS
typical noninverting video driver with a gain of +2.
10
F + RF 432 432 +VS 4.7
F 0.1
F FB + RG – +V 0.1
F FB AD8000 V 75 R O S V CABLE V O 75 IN + RL V AD8000 OUT –V 0.1
F 0.1
F 75 + 10
F 75 + CABLE 4.7
F VIN + –VS 75 –VS
05321-071
NONINVERTING
05321-035 Figure 52. Video Line Driver Figure 50. Noninverting Configuration
Table 5. Typical Values (LFCSP/SOIC) Component −3 dB SS Bandwidth −3 dB LS Bandwidth Slew Rate Output Noise Total Output Noise Including Gain Values (Ω) (MHz) (MHz) (V/μs) (nV/√Hz) Resistors (nV/√Hz) RF RG LFCSP SOIC LFCSP SOIC
1 432 1380 1580 550 600 2200 10.9 11.2 2 432 432 600 650 610 650 3700 11.3 11.9 4 357 120 550 550 350 350 3800 10 12 10 357 40 350 365 370 370 3200 18.4 19.9 Rev. C | Page 14 of 17 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION CONNECTION DIAGRAMS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS WITH ±5 V SUPPLY SPECIFICATIONS WITH +5 V SUPPLY ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE MAXIMUM POWER DISSIPATION ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS APPLICATIONS INFORMATION CIRCUIT CONFIGURATIONS VIDEO LINE DRIVER LOW DISTORTION PINOUT EXPOSED PADDLE PRINTED CIRCUIT BOARD LAYOUT SIGNAL ROUTING POWER SUPPLY BYPASSING GROUNDING OUTLINE DIMENSIONS ORDERING GUIDE