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参数资料
| 型号： | EL5444CN |
| 英文描述： | 100 MHz Single Supply Rail to Rail Amplifier |
| 中文描述： | 100兆赫单电源轨至轨放大器 |
| 文件页数： | 8/20页 |
| 文件大小： | 945K |
| 代理商： | EL5444CN |
16
EL5144C, EL5146C, EL5244C, EL5246C,
EL5444C
100 MHz Single Supply Rail to Rail Amplifier
EL514
4C
,E
L
5146C,
EL
5244C,
EL5246C,
E
L
5444C
Figure 1 shows the output of the EL5144C series ampli-
fier swinging rail to rail with RF = 1K, AV = +2 and RL
= 1M
. Figure 2 is with RL = 150 .
Choice of Feedback Resistor, RF
These amplifiers are optimized for applications that
require a gain of +1. Hence, no feedback resistor is
required. However, for gains greater than +1, the feed-
back resistor forms a pole with the input capacitance. As
this pole becomes larger, phase margin is reduced. This
causes ringing in the time domain and peaking in the fre-
quency domain. Therefore, RF has some maximum
value that should not be exceeded for optimum perfor-
mance. If a large value of RF must be used, a small
capacitor in the few picofarad range in parallel with RF
can help to reduce this ringing and peaking at the
expense of reducing the bandwidth.
As far as the output stage of the amplifier is concerned,
RF + RG appear in parallel with RL for gains other than
+1. As this combination gets smaller, the bandwidth
falls off. Consequently, RF also has a minimum value
that should not be exceeded for optimum performance.
For AV = +1, RF = 0 is optimum. For AV = -1 or +2
(noise gain of 2), optimum response is obtained with RF
between 300
and 1K . For AV = -4 or +5 (noise gain
of 5), keep RF between 300 and 15K .
Video Performance
For good video signal integrity, an amplifier is required
to maintain the same output impedance and the same fre-
quency response as DC levels are changed at the output.
This can be difficult when driving a standard video load
of 150
, because of the change in output current with
DC level. A look at the Differential Gain and Differen-
tial Phase curves for various supply and loading
conditions will help you obtain optimal performance.
Curves are provided for AV = +1 and +2, and RL = 150
and 10 K
tied both to ground as well as 2.5V. As with
all video amplifiers, there is a common mode sweet spot
for optimum differential gain / differential phase. For
example, with AV = +2 and RL = 150 tied to 2.5V, and
the output common mode voltage kept between 0.8V
and 3.2V, dG/dP is a very low 0.1% / 0.1°. This condi-
tion corresponds to driving an AC-coupled, double
terminated 75
coaxial cable. With AV = +1, RL =
150
tied to ground, and the video level kept between
0.85V and 2.95V, these amplifiers provide dG/dP per-
f o r m ance of 0.05 % / 0.20 ° . Th is c ond it ion is
representative of using the EL5144C series amplifier as
a buffer driving a DC coupled, double terminated, 75
coaxial cable. Driving high impedance loads, such as
signals on computer video cards, gives similar or better
dG/dP performance as driving cables.
Driving Cables and Capacitive Loads
The EL5144C series amplifiers can drive 50pF loads in
parallel with 150
with 4dB of peaking and 100pF with
7dB of peaking. If less peaking is desired in these appli-
cations, a small series resistor (usually between 5
and
50
) can be placed in series with the output to eliminate
most peaking. However, this will obviously reduce the
gain slightly. If your gain is greater than 1, the gain
resistor (RG) can then be chosen to make up for any gain
0V
5V
Figure 1
0V
5V
Figure 2
相关PDF资料 |
PDF描述 |
|---|---|
| EL5444CS | 100 MHz Single Supply Rail to Rail Amplifier |
| EL5444C | 100 MHz Single Supply Rail to Rail Quad Amplifier(100MHz单电源满幅度输出四路放大器) |
| EL5481C | Quad 8ns High-Speed Comparators |
| EL5481CS | Quad 8ns High-Speed Comparators |
| EL5481CS-T13 | Quad 8ns High-Speed Comparators |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EL5444CS | 功能描述:IC AMP QUAD R-R 100MHZ 14-SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1,000 系列:- 放大器类型:电压反馈 电路数:4 输出类型:满摆幅 转换速率:33 V/µs 增益带宽积:20MHz -3db带宽:30MHz 电流 - 输入偏压:2nA 电压 - 输入偏移:3000µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:带卷 (TR) |
| EL5444CS-T13 | 功能描述:IC AMP VFA QUAD 100MHZ 14-SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:LinCMOS™ 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.05 V/µs 增益带宽积:110kHz -3db带宽:- 电流 - 输入偏压:0.7pA 电压 - 输入偏移:210µV 电流 - 电源:57µA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:管件 产品目录页面:865 (CN2011-ZH PDF) 其它名称:296-1834296-1834-5 |
| EL5444CS-T7 | 功能描述:IC AMP QUAD R-R 100MHZ 14-SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:- 放大器类型:通用 电路数:2 输出类型:满摆幅 转换速率:1.8 V/µs 增益带宽积:6.5MHz -3db带宽:4.5MHz 电流 - 输入偏压:5nA 电压 - 输入偏移:100µV 电流 - 电源:65µA 电流 - 输出 / 通道:35mA 电压 - 电源，单路/双路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作温度:-40°C ~ 85°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 |
| EL5444CSZ | 功能描述:IC AMP VFA QUAD 100MHZ 14-SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:LinCMOS™ 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.05 V/µs 增益带宽积:110kHz -3db带宽:- 电流 - 输入偏压:0.7pA 电压 - 输入偏移:210µV 电流 - 电源:57µA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:管件 产品目录页面:865 (CN2011-ZH PDF) 其它名称:296-1834296-1834-5 |
| EL5444CSZ-T13 | 功能描述:IC AMP VFA QUAD 100MHZ 14-SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:LinCMOS™ 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.05 V/µs 增益带宽积:110kHz -3db带宽:- 电流 - 输入偏压:0.7pA 电压 - 输入偏移:210µV 电流 - 电源:57µA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:管件 产品目录页面:865 (CN2011-ZH PDF) 其它名称:296-1834296-1834-5 |
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