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参数资料
| 型号： | HCPL-7800-500 |
| 元件分类： | 隔离放大器 |
| 英文描述： | ISOLATION AMPLIFIER, 3750 V ISOLATION-MIN, 85 kHz BAND WIDTH, PDSO8 |
| 文件页数： | 8/17页 |
| 文件大小： | 375K |
| 代理商： | HCPL-7800-500 |
1-231
Figure 28. HCPL-7800 Block Diagram.
Figure 29. PC Board Trace Pattern and Loading Diagram Example.
VOLTAGE
REGULATOR
CLOCK
GENERATOR
Σ
MODULATOR
ENCODER
LED DRIVE
CIRCUIT
DETECTOR
CIRCUIT
DECODER
AND D/A
FILTER
ISO-AMP
OUTPUT
VOLTAGE
REGULATOR
ISO-AMP
INPUT
ISOLATION
BOUNDARY
conflicting considerations,
therefore, must be weighed
against each other in selecting an
appropriate sense resistor for a
particular application. To
maintain circuit accuracy, it is
recommended that the sense
resistor and the isolation amplifier
circuit be located as close as
possible to one another. Although
it is possible to buy current-
sensing resistors from established
vendors (e.g., the LVR-1, -3 and
-5 resistors from Dale), it is also
possible to make a sense resistor
using a short piece of wire or
even a trace on a PC board.
Figures 30 and 31 illustrate the
response of the overall isolation
amplifier circuit shown in Figure
26. Figure 30 shows the response
of the circuit to a
± 200 mV 20
kHz sine wave input and Figure
31 the response of the circuit to a
± 200 mV 20 kHz square wave
input. Both figures demonstrate
the fast, well-behaved response of
the HCPL-7800.
Figure 32 shows how quickly the
isolation amplifier recovers from
an overdrive condition generated
by a 2 kHz square wave swinging
between 0 and 500 mV (note that
the time scale is different from
the previous figures). The first
wave form is the output of the
application circuit with the filter
capacitors removed to show the
actual response of the isolation
amplifier. The second wave form
is the response of the same circuit
with the capacitors installed. The
recovery time and overshoot are
relatively independent of the
amplitude and polarity of the
overdrive signal, as well as its
duration.
For more information, refer to
Application Note 1059.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| HCPL-7800-500E | 功能描述:隔离放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 输入补偿电压:1.5 mV 共模抑制比（最小值）:95 dB 带宽:60 KHz 工作电源电压:3.3 V 电源电流:8 mA 工作温度范围:- 40 C to + 105 C 安装风格:SMD/SMT 封装 / 箱体:SOP-8 封装:Tube |
| HCPL-7800A | 功能描述:特殊用途放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 通道数量:Single 共模抑制比（最小值）: 输入补偿电压: 工作电源电压:3 V to 5.5 V 电源电流:5 mA 最大功率耗散: 最大工作温度:+ 70 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-20 封装:Reel |
| HCPL-7800A#300 | 功能描述:隔离放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 输入补偿电压:1.5 mV 共模抑制比（最小值）:95 dB 带宽:60 KHz 工作电源电压:3.3 V 电源电流:8 mA 工作温度范围:- 40 C to + 105 C 安装风格:SMD/SMT 封装 / 箱体:SOP-8 封装:Tube |
| HCPL-7800A#500 | 功能描述:隔离放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 输入补偿电压:1.5 mV 共模抑制比（最小值）:95 dB 带宽:60 KHz 工作电源电压:3.3 V 电源电流:8 mA 工作温度范围:- 40 C to + 105 C 安装风格:SMD/SMT 封装 / 箱体:SOP-8 封装:Tube |
| HCPL-7800A#500AHE | 制造商:Avago Technologies 功能描述: |
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