HCPL-7510-500E

HCPL-7510-500E is an isolated linear current sensing IC. It is designed for current sensing in low-power electronic motor drives. In a typical implementa­tion, motor current flows through an external resistor, and the resulting analogue voltage drop is sensed by the HCPL-7510. An output voltage is created on the other side of the HCPL7510 optical isolation barrier. This single-ended output voltage is proportional to the motor current. Since common-mode voltage swings of several hundred volts in tens of nanoseconds are common in modern switching inverter motor drives, the HCPL-7510 was designed to ignore very high common-mode transient slew rates (of at least 10kV/µs). Applications include low-power inverter current sensing, motor phase and rail current sensing, switched mode power supply signal isolation, general-purpose low-power current sensing and monitoring, general purpose analogue signal isolation.

• 15kV/µs common-mode rejection at Vcm = 1000V
• 0.06% nonlinearity, single-ended amplifier output for low power application
• UL 1577 (3750 Vrms/1 min.), CSA and IEC/EN/DIN EN 60747-5-2 approval
• Advanced sigma-delta (S-D) A/D converter technology
• 60ppm/°C typical magnitude of gain change vs. temperature at (-0.2V VIN+ 0.2V, TA = 25°C)
• Input offset voltage is -0.6mV typical at (VIN+ = 0V, TA = 25°C)
• Typical magnitude of input offset change vs. temperature is 8µV/°C at (VIN+ = 0V, TA = 25°C)
• VOUT 200mV nonlinearity is 0.06% typical at (0.2V VIN+ 0.2V, TA = 25°C)
• Input supply current is 11.7mA typical at (TA = 25°C)
• Operating temperature range from -40°C to 85°C, 8-pin DIP package