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AD8000YCPZ-R2 Scheda tecnica(PDF) 14 Page - Analog Devices

Il numero della parte AD8000YCPZ-R2
Spiegazioni elettronici  1.5 GHz Ultrahigh Speed Op Amp
PDF  20 Pages
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD8000YCPZ-R2 Scheda tecnica(HTML) 14 Page - Analog Devices

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AD8000
Rev. 0 | Page 14 of 20
APPLICATIONS
All current feedback amplifier operational amplifiers are
affected by stray capacitance at the inverting input pin. As a
practical consideration, the higher the stray capacitance on
the inverting input to ground, the higher RF needs to be to
minimize peaking and ringing.
CIRCUIT CONFIGURATIONS
Figure 50 and Figure 51 show typical schematics for non-
inverting and inverting configurations. For current feedback
amplifiers, 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 than ±10% to ensure stable operation.
Figure 8 shows the influence varying RF has on bandwidth. In
noninverting unity-gain configurations, it is recommended that
an RS of 50 Ω be used, as shown in Figure 50.
Table 5 provides a quick reference for the circuit values, gain,
and output voltage noise.
FB
AD8000
10
µF
0.1
µF
RG
RS
+VS
VO
VIN
RL
–
+
VO
+V
–VS
–V
10
µF
0.1
µF
RF
+
+
NONINVERTING
Figure 50. Noninverting Configuration
FB
AD8000
10
µF
0.1
µF
RG
+VS
VO
VIN
RL
–
+
VO
+V
–VS
–V
10
µF
0.1
µF
RF
+
+
Figure 51. Inverting Configuration
VIDEO LINE DRIVER
The AD8000 is designed to offer outstanding performance as a
video line driver. The important specifications of differential
gain (0.02%), differential phase (0.01°), and 650 MHz band-
width at 2 V p-p meet the most exacting video demands. Figure 52
shows a typical noninverting video driver with a gain of +2.
432
Ω
432
Ω
75
Ω
CABLE
75
Ω
75
Ω
VOUT
+VS
–VS
VIN
0.1
µF
4.7
µF
AD8000
0.1
µF
4.7
µF
75
Ω
CABLE
75
Ω
+
+
+
FB
Figure 52. Video Line Driver
Table 5. Typical Values (LFCSP/SOIC)
Gain
Component
Values (Ω)
−3 dB SS
Bandwidth
(MHz)
−3 dB LS
Bandwidth
(MHz)
Slew Rate
(V/µsec)
Output Noise
(nV/√Hz)
Total Output
Noise Including
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



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