参数资料
| 型号： | AD841SE |
| 厂商： | Analog Devices Inc |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP 40MHZ 50MA 20CLCC |
| 标准包装： | 1 |
| 放大器类型： | 通用 |
| 电路数： | 1 |
| 转换速率： | 300 V/µs |
| 增益带宽积： | 40MHz |
| 电流 - 输入偏压： | 3.5µA |
| 电压 - 输入偏移： | 500µV |
| 电流 - 电源： | 11mA |
| 电流 - 输出 / 通道： | 50mA |
| 电压 - 电源，单路/双路(±)： | ±5 V ~ 18 V |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-CLCC |
| 供应商设备封装： | 20-LCCC |
| 包装： | 管件 |
AD841
Data Sheet
Rev. C | Page 12 of 16
TERMINATED LINE DRIVER
The AD841 functions very well as a high speed line driver of
either terminated or unterminated cables. Figure 33 shows the
AD841 driving a doubly terminated cable in a follower config-
uration. The AD841 maintains a typical slew rate of 300 V/s,
which means it can drive a ±10 V, 4.7 MHz signal or a ±3 V,
15.9 MHz signal.
The termination resistor, RT, (when equal to the characteristic
impedance of the cable) minimizes reflections from the far end
of the cable. A back-termination resistor, RBT, (also equal to the
characteristic impedance of the cable) may be placed between
the AD841 output and the cable to damp any stray signals
caused by a mismatch between RT and the cable’s characteristic
impedance. This results in a cleaner signal, but because half the
output voltage is dropped across RBT, the op amp must supply
double the output signal required if there is no back termina-
tion. Therefore, the full power bandwidth is cut in half.
If termination is not used, cables appear as capacitive loads. If
this capacitive load is large, it should be decoupled from the
AD841 by a resistor in series with the output (see Figure 32).
Figure 33. Line Driver Configuration
OVERDRIVE RECOVERY
Figure 34 shows the overdrive recovery capability of the AD841.
Typical recovery time is 200 ns from negative overdrive and
700 ns from positive overdrive.
Figure 34. Overdrive Recovery
Figure 35. Overdrive Recovery Test Circuit
11
6
4
5
10
–
+
AD841
+VS
–VS
2.2F
0.1F
2.2F
0.1F
TERMINATION
RESISTOR
FOR INPUT
SIGNAL
RB
100
VIN
RBT
(OPTIONAL)
RT
VOUT
50 OR
75 CABLE
RT = RBT = CABLE CHARACTERISTIC IMPEDANCE
1
1340-
033
100
90
10
0%
10V
200ns
1V
OVERDRIVEN
OUTPUT: 10V/DIV
INPUT SQUARE
WAVE: 1V/DIV
1
1340-
034
11
6
4
5
10
–
+
AD841
+VS
–VS
2.2F
0.1F
2.2F
0.1F
OUTPUT
1k
50
HP3314A
PULSE GENERATOR
OR EQUIVALENT
1s ± 1V SQUARE
WAVE INPUT
1
1340-
035
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD841SE/883B | 功能描述:高速运算放大器 FAST SETTLING H.S. OP AMP RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube 产品: |
| AD841SEZ | 制造商:Analog Devices 功能描述:OP Amp Single GP ±18V 20-Pin LCC |
| AD841SH | 制造商:Analog Devices 功能描述:OP Amp Single GP 制造商:Rochester Electronics LLC 功能描述:FAST SETTLING H.S. OP AMP - Bulk |
| AD841SH/883B | 制造商:Analog Devices 功能描述:OP Amp Single GP 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD841SHZ | 制造商:Analog Devices 功能描述:OP Amp Single GP 制造商:Analog Devices 功能描述:OP Amp Single GP ±18V 12-Pin TO-8 |
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