参数资料
型号: ADA4897-2ARMZ
厂商: Analog Devices Inc
文件页数: 14/29页
文件大小: 0K
描述: IC OPAMP RR 230MHZ LP 10MSOP
标准包装: 50
放大器类型: 电压反馈
电路数: 2
输出类型: 满摆幅
转换速率: 120 V/µs
-3db带宽: 230MHz
电流 - 输入偏压: 11µA
电压 - 输入偏移: 28µV
电流 - 电源: 3mA
电流 - 输出 / 通道: 80mA
电压 - 电源,单路/双路(±): 3 V ~ 10 V,±1.5 V ~ 5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 管件
ADA4896-2/ADA4897-1/ADA4897-2
Data Sheet
Rev.
| Page 20 of 28
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).
2
FREQUENCY (MHz)
0.1
1
10
100
500
1
0
–1
–2
–3
–4
–5
–6
VS = +5V
VOUT = 200mV p-p
RF = 249
RL = 1k
G = +20
09
44
7-
0
2
0
G = +10
G = +5
G = +2
G = +1
NO
RM
AL
IZ
E
D
CL
O
S
E
D-
L
O
P
G
A
IN
(
d
B)
Figure 51. Small Signal Frequency Response at Various Gains
Table 13. Recommended Values and Typical Performance
Gain
RF (Ω)
RG (Ω)
3 dB BW (MHz)
Slew Rate, tR/tF (V/μs)
Peaking (dB)
Total Output Noise Including
Resistors (nV/√Hz)
+1
0
N/A
92
78/158
0.8
1.0
+2
249
54
101/140
1.2
3.6
+5
249
61.9
30
119/137
0
6.8
+10
249
27.4
17
87/88
0
12.0
+20
249
13.0
9
37/37
0
21.1
B
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