AD8139_16 Datasheet, PDF (11/27 Pages) Analog Devices – Low Noise, Rail-to-Rail, Differential ADC Driver

AD8139
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11 _{VO, dm = 0.1V p-p}
–12
10
R_L = 200Ω
R_L = 100Ω
R_L = 500Ω
R_L = 1kΩ
100
FREQUENCY (MHz)
1000
Figure 13. Small Signal Frequency Response for Various Loads
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11 _{VO, dm = 0.1V p-p}
–12
10
C_F = 2pF
100
FREQUENCY (MHz)
C_F = 0pF
C_F = 1pF
1000
Figure 14. Small Signal Frequency Response for Various CF
6
5
4
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8 V_{O, dm} = 0.1V p-p
–9
10
V_OCM = +4.3V
V_OCM = –4.3V
V_OCM = +4V
V_OCM = –4V
V_OCM = 0V
100
FREQUENCY (MHz)
1000
Figure 15. Small Signal Frequency Response at Various VOCM
Data Sheet
2
1
R_L = 100Ω
0
–1
R_L = 500Ω
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12 _{VO, dm = 2.0V p-p}
–13
10
R_L = 200Ω
100
FREQUENCY (MHz)
R_L = 1kΩ
1000
Figure 16. Large Signal Frequency Response for Various Loads
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12 _{VO, dm = 2.0V p-p}
–13
10
C_F = 0pF C_F = 1pF
C_F = 2pF
100
FREQUENCY (MHz)
1000
Figure 17. Large Signal Frequency Response for Various CF
0.5
0.4
0.3
0.2
0.1
0
–0.1
R_L = 100Ω
(V_{O, dm} = 0.1V p-p)
R_L = 100Ω
(V_{O, dm} = 2.0V p-p)
R_L = 1kΩ
(V_{O, dm} = 2.0V p-p)
R_L = 1kΩ
(V_{O, dm} = 0.1V p-p)
–0.2
–0.3
–0.4
–0.5
1
10
100
FREQUENCY (Hz)
Figure 18. 0.1 dB Flatness for Various Loads and Output Amplitudes
Rev. C | Page 10 of 26