ADA4891-1 Analog Devices, ADA4891-1 Datasheet - Page 10

• Manufacturer Part Number: ADA4891-1
• Description: Low Cost CMOS, High Speed, Rail-to-Rail Amplifier (Single)
• Manufacturer: Analog Devices

Specifications of ADA4891-1

• -3db Bandwidth: 240MHz
• Slew Rate: 170V/µs
• Vos: 2.5mV
• Ib: 2pA
• # Opamps Per Pkg: 1
• Input Noise (nv/rthz): n/a
• Vcc-vee: 2.7V to 5.5V
• Isy Per Amplifier: 4.4mA
• Packages: SOIC,SOT

ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4
Figure 25. Harmonic Distortion (HD2, HD3) vs. Output Voltage, G = +2
–10
90
80
70
60
50
40
30
20
10
–100
0.001
0
–40
–50
–60
–70
–80
–90
–1
–2
–3
–4
7
6
5
4
3
2
1
0
0.1
0
G = +2
R
R
f
V
G = +2
R
V
Figure 26. Open-Loop Gain and Phase vs. Frequency
C
Figure 27. Small-Signal Frequency Response vs. C
S
OUT
F
L
L
= 1MHz
= 604Ω
= 150Ω
= 5V
= 150Ω
0.5
0.01
PHASE
= 200mV p-p
1.0
SECOND HARMONIC
1
ADA4891-1/ADA4891-2
0.1
1.5
OUTPUT VOLTAGE (V p-p)
SECOND HARMONIC
FREQUENCY (MHz)
GAIN
V
FREQUENCY (MHz)
S
= 3V
2.0
V
C
S
C
C
L
1
L
= 5V
L
= 10pF
2.5
= 47pF
10
= 22pF
C
V
THIRD HARMONIC
L
S
3.0
= 0pF
= 3V
10
3.5
THIRD HARMONIC
100
100
V
4.0
S
V
R
= 5V
S
L
= 5V
= 1kΩ
4.5
L
,
1k
5.0
0
–18
–36
–54
–72
–90
–108
–126
–144
–162
–180
1k
Rev. C | Page 10 of 24
100
1k
10
–1
–2
–3
–4
–0.02
–0.04
–0.06
1
7
6
5
4
3
2
1
0
0.06
0.04
0.02
–0.1
–0.2
–0.3
0.1
10
0.3
0.2
0.1
V
G = +1
V
G = +2
R
V
0
0
Figure 30. Small-Signal Frequency Response vs. C
S
S
L
OUT
= 5V
= 5V
1
1
= 150Ω
V
R
V
R
Figure 28. Input Voltage Noise vs. Frequency
Figure 29. Differential Gain and Phase Errors
ST
ST
S
S
F
F
= 200mV p-p
= 5V, G = +2
= 604Ω, R
= 5V, G = +2
= 604Ω, R
100
2
2
ND
ND
1
3
3
MODULATING RAMP LEVEL (IRE)
ADA4891-3/ADA4891-4
RD
L
L
RD
= 150Ω
= 150Ω
1k
FREQUENCY (MHz)
FREQUENCY (Hz)
4
4
TH
TH
C
C
C
L
L
L
5
5
= 47pF
10k
TH
= 22pF
TH
= 10pF
10
C
6
6
L
TH
TH
= 0pF
100k
7
7
TH
TH
100
8
8
TH
TH
1M
9
9
TH
TH
L
,
10
10
10M
TH
TH
1k