參數(shù)資料
型號(hào)： HCPL7820
元件分類： 運(yùn)動(dòng)控制電子
英文描述： High CMR Analog Isolation Amplifiers
中文描述： 高CMR模擬隔離放大器
文件頁(yè)數(shù)： 1/15頁(yè)
文件大?。?/td> 228K
代理商： HCPL7820
1-233
5965-3591E
H
High CMR Analog Isolation
Amplifiers
Technical Data
Features
Fast Propagation Delays for
Over-Current and Fault
Detection Sensing
High Common Mode
Rejection (CMR): 30 kV/
μ
s at
V
CM
= 1000 V*
3% Gain Tolerance:
HCPL-7820
5% Gain Tolerance:
HCPL-7825
0.05% Nonlinearity
Low Offset Voltage and Off-
set Drift vs. Temperature
200 kHz Bandwidth
Performance Specified for
Common Motor Control
Applications over -40
°
C to
100
°
C Temperature Range
Worldwide Safety and
Regulatory Approval: UL
1577 (3750 V rms/1 Min),
VDE 0884 and CSA
Compact Auto-Insertable
Standard 8-Pin DIP Package
Advanced Sigma-Delta (
Σ
)
A/D Converter Technology
1
μ
m CMOS IC Technology
Applications
Motor Phase and Rail
Current Sensing
General Purpose Current
Sensing and Monitoring
High-Voltage Monitoring
Switched Mode Power
Supply Signal Isolation
General Purpose Analog
Signal Isolation
Transducer Isolation
Description
The HCPL-7820/7825 high CMR
isolation amplifier consists of a
sigma-delta analog-to-digital
converter optically coupled to an
integrated output digital-to-analog
converter. When used with a
shunt resistor in the current path,
the HCPL-7820/7825 provides a
cost-effective, auto-insertion
compatible current sense solution.
Fast propagation delays allow this
part to be used in either motor
drive or inverter applications for
either phase current monitoring
or rail current fault detection
applications. High isolation mode
*The terms common-mode rejection (CMR) and isolation-mode rejection (IMR) are used interchangeably throughout this data sheet.
A 0.1
μ
F bypass capacitor must be connected between pins 1 and 4 and between pins 5 and 8.
rejection makes this product
suitable for noisy electrical
environments, such as those
generated by the high switching
rates of power IGBTs. Low offset
voltage together with low offset
change vs. temperature permits
accurate use of auto-calibration
techniques. Tight gain tolerance
with good nonlinearity further
provide the characteristics needed
to insure highly accurate motor
speed control. A high operating
temperature range with specified
performance parameters allow
HCPL-7820
HCPL-7825
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.
Functional Diagram
1
I
DD1
2
3
4
V
DD1
V
IN+
V
IN–
GND1
8
I
DD2
7
6
5
V
DD2
V
OUT+
V
OUT–
GND2
+
–
+
–
CMR SHIELD
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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(bǔ)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
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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(bǔ)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
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