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ADA4891-2 Datasheet(PDF) 7 Page - Analog Devices

Part # ADA4891-2
Description  Low Cost CMOS, High Speed, Rail-to-Rail Amplifiers
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADA4891-2 Datasheet(HTML) 7 Page - Analog Devices

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ADA4891-1/ADA4891-2
Rev. A | Page 7 of 20
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
1
0.1
10
100
FREQUENCY (MHz)
VS = 3V
G = +2
VOUT = 2V p-p
RL = 150Ω
RF = 604Ω
RF = 549Ω
RF = 649Ω
RF = 698Ω
Figure 12. 0.1 dB Gain Flatness vs. RF, VS = 3 V
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
1
0.1
1
10
100
1k
FREQUENCY (MHz)
VS = +5V
RL = 150Ω
VOUT = 2V p-p
G = +1
RF = 0Ω
G = –1
RF = 604Ω
G = +2
RF = 604Ω
G = +5
RF = 604Ω
Figure 13. Large Signal Frequency Response vs. Gain, VS = 5 V
–10
–9
0.1
1
10
100
1000
FREQUENCY (MHz)
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
4
G = –1
VOUT = 2V p-p
G = +2
VOUT = 2V p-p
G = +1
VOUT = 1V p-p
G = +5
VOUT = 2V p-p
VS = 3V
RF = 604Ω
RL = 150Ω
Figure 14. Large Signal Frequency Response vs. Gain, VS = 3 V
–120
–110
–100
–90
–80
–70
–60
–50
40
0.1
1
10
FREQUENCY (MHz)
VS = 5V
RL = 1kΩ
VOUT = 2V p-p
G = +2
SECOND HARMONIC
G = +1
SECOND HARMONIC
G = +2
THIRD HARMONIC
G = +1
THIRD HARMONIC
Figure 15. Harmonic Distortion (HD2, HD3) vs. Frequency, VS = 5 V
–90
–80
–70
–60
–50
–40
30
0.1
1
10
FREQUENCY (MHz)
VS = 3V
RL = 1kΩ
VOUT = 2V p-p
G = +1
THIRD HARMONIC
G = +1
SECOND HARMONIC
G = +2
SECOND HARMONIC
OUT
IN
+VS = 2V
–VS = –1V
G = +1 CONFIGURATION
1k
50
G = +2
THIRD HARMONIC
Figure 16. Harmonic Distortion (HD2, HD3) vs. Frequency, VS = 3 V
–120
–110
–100
–90
–80
–70
–60
–50
40
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
OUTPUT VOLTAGE (V p-p)
G = +1
THIRD HARMONIC
VS = 5V
RF = 604Ω
RL = 1kΩ
fC = 1MHz
G = –1
THIRD HARMONIC
G = +1
SECOND HARMONIC
G = –1
SECOND HARMONIC
Figure 17. Harmonic Distortion vs. Output Voltage, VS = 5 V


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