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Shenzhen Sunyuan Technology Co., Ltd.

4-20ma Isolator, 4-20ma Sensor, 4-20ma Signal manufacturer / supplier in China, offering Two-Wrie 4 to 20mA Current Loop Isolator IC (ISO 4-20ma), 2-Channel/4-Channel DC Current/Voltage Signal to RS232/RS485 a/D Converter Without LED Display, The Internet of Things/Local Area Network 0-5V/0-10V/4-20mA to RS232/RS485/RJ45 Isolated Transmittersyad08-RJ45 Series and so on.

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Supplier Homepage Product 2-wire 4-20mA Loop Powered Converter Two-Wrie 4 to 20mA Current Loop Isolator IC (ISO 4-20ma)

Two-Wrie 4 to 20mA Current Loop Isolator IC (ISO 4-20ma)

FOB Price: Get Latest Price
Min. Order: 10 Pieces
Production Capacity: 50000PCS/Year
Transport Package: SIP 12pin or DIN Rail
Payment Terms: T/T, Paypal, Western Union

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Basic Info
  • Model NO.: ISO 4-20ma
  • Output: 4-20mA
  • Isolation Voltage: 3000V
  • Trademark: SUNYUAN
  • Origin: Shenzhen
  • Input: 4-20mA
  • Isolation Method: Electromagnetic Isolation
  • Package: SIP 12pin
  • Specification: ISO9001: 2008, CE, ROHS
Product Description
Two-Wrie 4 to 20mA Current Loop Isolator IC (ISO 4-20ma)


· Low cost, small size, standard SIP12 package
· Electromagnetic Isolation
· Signal input/output, 3000VDC isolated voltage
· No external instrument needed for power supply
· 4-20mA high accuracy of current input/output(distortion<0.2%)
· Industrial temperature(-45~+85 º C)
· High linearity(Nonlinearity<0.2%)
· Small signal bandwidth: 50HZ
· Weld to PCB directly


· Analog signal data acquisition and isolation
· Isolated 4-20mA signal transmission
· Industrial process signal isolation
· Ground-loop elimination
· No distortion in long distance signal transmission
· Instrument signal acquisition
· Electric supervision and medical application
· Isolated safe bar
· Biomedical measurements


ISO 4-20mA Loop Powered Isolator IC recieves 4-20mA/0-20mA signals and transmit them through a single chip. The ceramic hermetic hybrid package contains an electromagnetic coupled converter and current module. The very low input equivalent impendence allows an ultra-wide voltage input range, so that it is able to meet the requirements that no distortion in long-distance signal transmission under the circumstance without any external power. The internal ceramic PCB, resistance and new isolation technique allow the IC to withstand the 3KVDC insulated voltage and meets the industrial requirements like the extremely poor temperature, humidity and shaking conditions. These specifications make the ISO 4-20mA Current Loop Isolation Interface IC very easy to install in PCB.
Parameter Conditions Min. Typical Value Max. Unit
Isolation Volt.  AC, 60Hz
Insulation Impedance
Leak current
240Vrms, 60Hz
1000 2500
6000 Vrms
Temp. Drift
-45~+85ºC In range of full span    ±50
Input Signal Volt. Range   7.5 12 32 V
Output Linearity Range
Output Current  Io
Output Voltage Drop  Voh


Output Signal Ripple     5   mV
Frequency Response
(small signal bandwidth)
Io=20mA   2   KHz

Accuracy, linearity error grade ---------- 0.1, 0.2 Hysteresis error ---------- < 0.5% 
Auxiliary power---------- No Isolation  ---------- signal input and output
Operating Temp. ---------- -20 ~ +70ºC   Insulation Resistance  ---------- ≥20MΩ
Operating Humidity ---------10~90% (no condensation) Withstand Voltage ---------- 3KV(60HZ/S), leak current 1mA
Storage Temp.---------- -20 ~ +70ºC     Impact Resistance Volt. ---------- 3KV, 1.2/50us (peak value)
Storage Humidity -------10 ~ 95% (no condensation)  
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