Single Linear Optocoupler Littelfuse LOC110S for Medical Sensor Isolation and Audio Signal Interfacing
Product Overview
The LOC110 Single Linear Optocoupler is designed for high-fidelity analog signal transmission, featuring an infrared LED optically coupled with two photodiodes. A feedback photodiode creates a control signal to stabilize the LED drive current, compensating for non-linearities. An output photodiode provides a signal linearly proportional to the servo LED current. This optocoupler offers wide bandwidth, high isolation, and excellent servo linearity, making it ideal for applications requiring precise analog signal coupling and isolation.
Product Attributes
- Brand: IXYS Integrated Circuits Division
- Certifications: UL Recognized Component (File # E76270), CSA Certified Component (Certificate # 1175739), EN/IEC 60950-1 Certified Component (TUV Certificate # B 13 12 82667 003)
- Moisture Sensitivity Level (MSL): LOC110/LOC110S: MSL 1, LOC110P: MSL 3
- ESD Sensitivity: ESD Sensitive (JESD-625)
Technical Specifications
| Part Number | Description | Applications | Features | LED Operating Range | Transfer Gain (K3) | Isolation, Input to Output |
| LOC110 | 8-Pin DIP (50/Tube) | Modem Transformer Replacement With No Insertion Loss, Digital Telephone Isolation, Power Supply Feedback Voltage/Current, Medical Sensor Isolation, Audio Signal Interfacing, Isolation of Process Control Transducers | 0.01% Servo Linearity, THD -87dB Typical, Wide Bandwidth (>200kHz), Couples Analog and Digital Signals, High Gain Stability, Low Input/Output Capacitance, Low Power Consumption | 2 - 10 mA | 0.668 - 1.179 | 3750 Vrms |
| LOC110P | 8-Pin Flatpack (50/Tube) | Modem Transformer Replacement With No Insertion Loss, Digital Telephone Isolation, Power Supply Feedback Voltage/Current, Medical Sensor Isolation, Audio Signal Interfacing, Isolation of Process Control Transducers | 0.01% Servo Linearity, THD -87dB Typical, Wide Bandwidth (>200kHz), Couples Analog and Digital Signals, High Gain Stability, Low Input/Output Capacitance, Low Power Consumption | 2 - 10 mA | 0.668 - 1.179 | 3750 Vrms |
| LOC110PTR | 8-Pin Flatpack (1000/Reel) | Modem Transformer Replacement With No Insertion Loss, Digital Telephone Isolation, Power Supply Feedback Voltage/Current, Medical Sensor Isolation, Audio Signal Interfacing, Isolation of Process Control Transducers | 0.01% Servo Linearity, THD -87dB Typical, Wide Bandwidth (>200kHz), Couples Analog and Digital Signals, High Gain Stability, Low Input/Output Capacitance, Low Power Consumption | 2 - 10 mA | 0.668 - 1.179 | 3750 Vrms |
| LOC110S | 8-Pin Surface Mount (50/tube) | Modem Transformer Replacement With No Insertion Loss, Digital Telephone Isolation, Power Supply Feedback Voltage/Current, Medical Sensor Isolation, Audio Signal Interfacing, Isolation of Process Control Transducers | 0.01% Servo Linearity, THD -87dB Typical, Wide Bandwidth (>200kHz), Couples Analog and Digital Signals, High Gain Stability, Low Input/Output Capacitance, Low Power Consumption | 2 - 10 mA | 0.668 - 1.179 | 3750 Vrms |
| LOC110STR | 8-Pin Surface Mount (1000/Reel) | Modem Transformer Replacement With No Insertion Loss, Digital Telephone Isolation, Power Supply Feedback Voltage/Current, Medical Sensor Isolation, Audio Signal Interfacing, Isolation of Process Control Transducers | 0.01% Servo Linearity, THD -87dB Typical, Wide Bandwidth (>200kHz), Couples Analog and Digital Signals, High Gain Stability, Low Input/Output Capacitance, Low Power Consumption | 2 - 10 mA | 0.668 - 1.179 | 3750 Vrms |
| Parameter | Conditions | Symbol | Min | Typ | Max | Units |
| LED Voltage Drop | IF = 2 - 10mA | VF | 0.9 | 1.2 | 1.4 | V |
| Reverse LED Current | VR = 5V | IR | - | - | 10 | A |
| Dark Current | IF=0mA, VC1-A1=VC2-A2=15V | ID | - | 1 | 25 | nA |
| Servo Gain (IC1/IF) | IF=2 - 10mA, VC1-A1=VC2-A2=15V | K1 | 0.004 | 0.007 | 0.030 | - |
| Forward Gain (IC2/IF) | IF=2 - 10mA, VC1-A1=VC2-A2=15V | K2 | 0.004 | 0.007 | 0.030 | - |
| Transfer Gain Linearity (non-servoed) | IF=2 - 10mA | K3 | - | - | 1 | % |
| K3 Temperature Coefficient | IF=2 - 10mA, VC1-A1=VC2-A2= 5V | K3/T | - | 0.005 | - | %/C |
| Common-Mode Rejection Ratio | V=20VP-P , RL=2k, f=100Hz | CMRR | - | 130 | - | dB |
| Total Harmonic Distortion | f0=350Hz, 0dBm | THD | -96 | -87 | -80 | dB |
| Frequency Response (Photoconductive) | f-3dB | - | 200 | - | kHz | |
| Frequency Response (Photovoltaic) | - | 40 | - | - | ||
| Capacitance, Input to Output | VIO=0V, f=1MHz | CIO | - | 3 | - | pF |
2411192313_Littelfuse-LOC110S_C2760150.pdf
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