ADA4896-2ACP-EBZ AD [Analog Devices], ADA4896-2ACP-EBZ Datasheet - Page 20

• Manufacturer Part Number: ADA4896-2ACP-EBZ
• Description: 1 nV/?Hz, Low Power
• Manufacturer: AD [Analog Devices]

ADA4896-2/ADA4897-1/ADA4897-2
APPLICATIONS INFORMATION
TYPICAL PERFORMANCE VALUES
To reduce design time and eliminate uncertainty, Table 13
provides a reference for typical gains, component values, and
performance parameters. The supply voltage used is 5 V. The band-
width is obtained with a small signal output of 200 mV p-p, and
the slew rate is obtained with a 2 V output step.
Note that as the gain increases, the small signal bandwidth
decreases, as is expected from the gain bandwidth product
relationship. In addition, the phase margin improves with
higher gains, and the amplifier becomes more stable. As a
result, the peaking in the frequency response is reduced
(see Figure 51).
Table 13. Recommended Values and Typical Performance
Gain
+1
+2
+5
+10
+20
R
0
249
249
249
249
F
(Ω)
R
N/A
249
61.9
27.4
13.0
G
(Ω)
−3 dB BW (MHz)
92
54
30
17
9
Rev. | Page 20 of 28
Slew Rate, t
78/158
101/140
119/137
87/88
37/37
B
R
/t
F
(V/μs)
–1
–2
–3
–4
–5
–6
Figure 51. Small Signal Frequency Response at Various Gains
2
1
0
0.1
V
V
R
R
S
OUT
F
L
= +5V
= 249Ω
= 1kΩ
Peaking (dB)
0.8
1.2
0
0
0
= 200mV p-p
1
G = +10
FREQUENCY (MHz)
G = +20
Total Output Noise Including
Resistors (nV/√Hz)
3.6
6.8
12.0
21.1
1.0
10
G = +5
100
Data Sheet
G = +2
G = +1
500