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AD8021ARMZ

更新时间： 2024-02-26 03:41:02
品牌 Logo 应用领域
亚德诺 - ADI 放大器
页数 文件大小 规格书
28页 594K
描述
Low Noise, High Speed Amplifier for 16-Bit Systems

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中文翻译

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AD8021ARMZ 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP,针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：1.68
放大器类型：OPERATIONAL AMPLIFIER最大平均偏置电流 (IIB)：10.5 µA
标称共模抑制比：98 dB最大输入失调电压：1000 µV
JESD-30 代码：R-PDSO-G8JESD-609代码：e3
长度：4.9 mm湿度敏感等级：1
负供电电压上限：-13.2 V标称负供电电压 (Vsup)：-5 V
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.75 mm标称压摆率：420 V/us
子类别：Operational Amplifier供电电压上限：13.2 V
标称供电电压 (Vsup)：5 V表面贴装：YES
技术：BIPOLAR温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3.9 mm
Base Number Matches：1

AD8021ARMZ 数据手册

 浏览型号AD8021ARMZ的Datasheet PDF文件第20页浏览型号AD8021ARMZ的Datasheet PDF文件第21页浏览型号AD8021ARMZ的Datasheet PDF文件第22页浏览型号AD8021ARMZ的Datasheet PDF文件第24页浏览型号AD8021ARMZ的Datasheet PDF文件第25页浏览型号AD8021ARMZ的Datasheet PDF文件第26页 
AD8021  
12  
9
C1  
+V  
S
AD8021  
R1  
R2  
C2  
3
2
V
IN  
6
6
5
V
OUT  
3
0
G = –2  
G = +2  
C
C
–V  
S
–3  
–6  
–9  
–12  
–15  
–18  
R
F
R
G
Figure 68. Schematic of a Second-Order, Low-Pass Active Filter  
Table 9. Typical Component Values for Second-Order, Low-  
Pass Active Filter of Figure 68  
Gain R1  
(Ω)  
R2  
(Ω)  
RF  
(Ω)  
RG  
(Ω)  
C1  
(nF)  
C2  
(nF)  
CC  
(pF)  
100k  
1M  
10M  
FREQUENCY (Hz)  
100M  
1G  
2
5
71.5  
44.2  
215  
365  
499  
365  
499  
90.9  
10  
10  
10  
10  
7
2
Figure 66. AC Response of Two Identically Compensated High Speed Op  
Amps Configured for a Gain of +2 and a Gain of −2  
12  
9
50  
40  
30  
6
3
G = ±2  
20  
G = 5  
0
–3  
10  
0
G = 2  
–6  
–10  
–20  
–30  
–40  
–50  
–9  
–12  
–15  
–18  
100k  
1M  
10M  
100M  
1G  
1k  
10k  
100k  
1M  
10M  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
Figure 67. AC Response of Two Dissimilarly Compensated AD8021 Op Amps  
(Figure 66) Configured for a Gain of +2 and a Gain of −2,  
(Note the Close Gain Match)  
Figure 69. Frequency Response of the Filter Circuit of Figure 68  
for Two Different Gains  
DRIVING CAPACITIVE LOADS  
USING THE AD8021 IN ACTIVE FILTERS  
When the AD8021 drives a capacitive load, the high frequency  
response can show excessive peaking before it rolls off. Two  
techniques can be used to improve stability at high frequency  
and reduce peaking. The first technique is to increase the  
compensation capacitor, CC, which reduces the peaking while  
maintaining gain flatness at low frequencies. The second  
technique is to add a resistor, RSNUB, in series between the output  
pin of the AD8021 and the capacitive load, CL. Figure 70 shows  
the response of the AD8021 when both CC and RSNUB are used to  
reduce peaking. For a given CL, Figure 71 can be used to  
determine the value of RSNUB that maintains 2 dB of peaking in  
the frequency response. Note, however, that using RSNUB attenuates  
the low frequency output by a factor of RLOAD/(RSNUB + RLOAD).  
The low noise and high gain bandwidth of the AD8021 make it  
an excellent choice in active filter circuits. Most active filter  
literature provides resistor and capacitor values for various  
filters but neglects the effect of the op amp’s finite bandwidth on  
filter performance; ideal filter response with infinite loop gain is  
implied. Unfortunately, real filters do not behave in this manner.  
Instead, they exhibit finite limits of attenuation, depending on  
the gain bandwidth of the active device. Good low-pass filter  
performance requires an op amp with high gain bandwidth for  
attenuation at high frequencies, and low noise and high dc gain  
for low frequency, pass-band performance.  
Figure 68 shows the schematic of a 2-pole, low-pass active filter  
and lists typical component values for filters having a Bessel-  
type response with a gain of 2 and a gain of ±. Figure 69 is a  
network analyzer plot of this filter’s performance.  
Rev. F | Page 23 of 28  
 
 
 
 
 
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中文翻译

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AD8021ARMZ 替代型号

型号 品牌 替代类型 描述 数据表
AD8021ARMZ-REEL7 ADI

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 Low Noise, High Speed Amplifier for 16-Bit Systems
AD8021ARMZ-REEL ADI

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 Low Noise, High Speed Amplifier for 16-Bit Systems
AD8021ARM ADI

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 Low Noise, High Speed Amplifier for 16-Bit Systems

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AD8021ARMZ-REEL7 ADI

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AD8021AR-REEL ADI

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AD8021ARZ-REEL ADI

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AD8021ARZ-REEL7 ADI

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AD8022 ADI

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AD80220BBCZ ADI

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