Linear Optocouplers and Isolation Amplifiers

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Linear Optocouplers
0.01% Servo Linearity THD -87dB Typical Wide Bandwidth (>200kHz) Couple Analog and Digital Signals High Gain Stability Low Input-to-Output Capacitance Low Power Consumption Surface Mount and Tape & Reel Versions Available
IXYS IC Division linear optocouplers features an infrared LED optically coupled with two photodiodes. One feedback (input) photodiode is used to generate a control signal that provides a servomechanism to the LED drive current, thus compensating for the LED's nonlinear time and temperature characteristics. The other (output) photodiode provides an output signal that is linear with respect to the servo LED current. The devices feature wide bandwidth, high input to output isolation, and excellent servo linearity.

Part Number	Data Sheet Revision	K1 Servo Gain	K2 Forward Gain	K3 Transfer Gain	Input Control Current (mA)	Isolation Voltage (V_rms)	Package
LOC110	11	0.004/0.03	0.004/0.03	0.668/1.179	2	3750	8-Pin DIP, SOIC
LOC111	9	0.008/0.03	0.006/0.03	0.733/1.072	2	3750	8-Pin DIP, SOIC
LOC112	7	0.004/0.03	0.004/0.03	0.733/1.072	2	3750	8-Pin DIP, SOIC
LOC117	5	0.008/0.03	0.006/0.03	0.887/1.072	2	3750	8-Pin DIP, SOIC

Application Notes:
(AN-107) LOCxx Series - Isolated Amplifier Design Principals (AN-109) LOC110 - Variable Speed Motor Controller Design (AN-111) Isolated 0 -10V to 4-20mA Converter Application