- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370452 > HCPL-7840 Isolation Amplifier(隔離放大器) PDF資料下載
參數(shù)資料
| 型號： | HCPL-7840 |
| 元件分類： | 運動控制電子 |
| 英文描述： | Isolation Amplifier(隔離放大器) |
| 中文描述： | 隔離放大器（隔離放大器） |
| 文件頁數(shù)： | 1/19頁 |
| 文件大小： | 244K |
| 代理商： | HCPL-7840 |
Isolation Amplifier
Technical Data
Features
15 kV/
μ
s Common-Mode
Rejection at V
CM
= 1000 V
Compact, Auto-Insertable
Standard 8-pin DIP Package
0.00025 V/V/
°
C Gain Drift vs.
Temperature
0.3 mV Input Offset Voltage
100 kHz Bandwidth
0.004% Nonlinearity
Worldwide Safety Approval:
UL 1577 (3750 Vrms/1 min.)
and CSA (pending), VDE
0884 (Option #060 only)
Advanced Sigma-Delta (
Σ
)
A/D Converter Technology
Fully Differential Circuit
Topology
0.8
μ
m CMOS IC Technology
Applications
Motor Phase and Rail
Current Sensing
Inverter Current Sensing
Switched Mode Power
Supply Signal Isolation
General Purpose Current
Sensing and Monitoring
General Purpose Analog
Signal Isolation
Description
The HCPL-7840 isolation amplifier
family was designed for current
sensing in electronic motor drives.
In a typical implementation, motor
currents flow through an external
resistor and the resulting analog
voltage drop is sensed by the
HCPL-7840. A differential output
voltage is created on the other
side of the HCPL-7840 optical
isolation barrier. This differential
output voltage is proportional to
the motor current and can be con-
verted to a single-ended signal by
using an op-amp as shown in the
recommended application circuit.
Since common-mode voltage
swings of several hundred volts in
tens of nanoseconds are common
in modern switching inverter
motor drives, the HCPL-7840
was designed to ignore very high
common-mode transient slew
rates (of at least 10 kV/
μ
s).
The high CMR capability of the
HCPL-7840 isolation amplifier
provides the precision and
stability needed to accurately
monitor motor current in high
noise motor control environ-
ments, providing for smoother
control (less “torque ripple”) in
various types of motor control
applications.
Functional Diagram
The product can also be used for
general analog signal isolation
applications requiring high
accuracy, stability, and linearity
under similarly severe noise con-
ditions. For general applications,
we recommend the HCPL-7840
(gain tolerance of
±
5%). The
HCPL-7840 utilizes sigma delta
(
∑
-
) analog-to-digital converter
technology, chopper stabilized
amplifiers, and a fully differential
circuit topology fabricated using
HCPL-7840
CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to
prevent damage and/or degradation which may be induced by ESD.
1
2
3
4
8
7
6
5
I
DD1
V
DD1
V
IN+
V
IN–
GND1
I
DD2
V
DD2
V
OUT+
V
OUT–
GND2
+
–
+
–
SHIELD
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HCPL-7850 | Hermetically Sealed Analog Isolation Amplifier(密封模擬隔離放大器) |
| HCPL-7851 | Hermetically Sealed Analog Isolation Amplifier(密封模擬隔離放大器) |
| HCPL-7870 | Isolated 15-bit A/D Converter(隔離15位A/D轉(zhuǎn)換器) |
| HCPL-788J | Isolation Amplifier with Short Circuit and Overload Detection(具有短路和過載保護功能的隔離放大器) |
| HCPL-810J | PLC Powerline DAA IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCPL-7840#060 | 功能描述:隔離放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 輸入補償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube |
| HCPL-7840#300 | 功能描述:隔離放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 輸入補償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube |
| HCPL-7840#360 | 功能描述:隔離放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 輸入補償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube |
| HCPL-7840#500 | 功能描述:隔離放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 輸入補償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube |
| HCPL-7840#560 | 功能描述:隔離放大器 4.5 - 5.5 SV 8 dB RoHS:否 制造商:Texas Instruments 輸入補償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。