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The HCNR200 high-linearity analog optocoupler consists of a high-performance AlGaAs LED that illuminates two closely matched photodiodes. The input photodiode can be used to monitor, and therefore stabilize, the light output of the LED. As a result, the nonlinearity and drift characteristics of the LED can be virtually eliminated. The output photodiode produces a photocurrent that is linearly related to the light output of the LED. The close matching of the photodiode and advanced design of the package ensure the high linearity and stable gain characteristics of the optocoupler.
The HCNR200 can be used to isolate analog signals in a wide variety of applications that require good stability, linearity, bandwidth and low cost. The HCNR200 is very flexible and, by appropriate design of the application circuit, is capable of operating in many different modes, including: unipolar/bipolar, AC/DC and inverting/non-inverting. The HCNR200 is an excellent solution for many analog isolation problems.
HCNR200 Features
• Low Nonlinearity: 0.01% • K3 (IPD2/IPD1) Transfer Gain HCNR200: ± 15% HCNR201: ± 5% • Low Gain Temperature Coefficient: -65 ppm/°C • Wide Bandwidth DC to >1 MHz • Worldwide Safety Approval - UL 1577 Recognized (5 kV rms/1 min Rating) - CSA Approved - BSI Certified - VDE 0884 Approved VIORM = 1414 Vpeak (Option #050) • Surface Mount Option Available (Option #300) • 8-Pin DIP Package - 0.400" Spacing • Allows Flexible Circuit Design • Special Selection for HCNR201: Tighter K1, K3 and Lower Nonlinearity Available
HCNR200 Typical Application
• Low Cost Analog Isolation • Telecom: Modem, PBX • Industrial Process Control: Transducer Isolator Isolator for Thermocouples 4 mA to 20 mA Loop Isolation • SMPS Feedback Loop, SMPS Feedforward • Monitor Motor Supply Voltage • Medical