Broadcom Optical Isolation Amplifier 300µV 4.5 to 5.5V DIP-8

Broadcom Optical Isolation Amplifier 300µV is a precision isolation amplifier with a 300µV input offset voltage, designed for accurate current and voltage sensing in electronic motor drives and other demanding applications. It provides galvanic isolation to protect sensitive circuitry from high-voltage transients and electrical noise while transmitting analogue signals.

Overview

Utilising Sigma-Delta analogue-to-digital converter technology and a fully differential circuit topology, this amplifier is intended for general analogue signal isolation where high performance under challenging conditions is required. Its combination of isolation, noise immunity and linearity suits industrial and power electronics environments.

Key Features

• High isolation: 3.75 kVrms isolation voltage for one minute
• Certified to UL 1577, CSA and IEC/EN/DIN EN 60747-5-5 safety standards
• Common-mode transient immunity of 15 kV/µs at 1000 V
• Input offset voltage of 300µV
• Gain drift versus temperature of 0.00025 V/V/°C
• Maximum non-linearity of 0.004%
• Auto-insertable 8-pin DIP (Dual In-line Package)

Applications

Suited to motor phase and rail current sensing in variable frequency drives, inverter current sensing, and signal isolation within switched-mode power supplies (SMPS). It is also suitable for general-purpose current sensing.

Specifications

• Supply voltage: 4.5 to 5.5 V
• Package: 8-pin DIP
• Width: 3.3
• Depth: 1.5
• Height: 4.3
• Weight: 1.984 g

Choose this amplifier when you need reliable optical galvanic isolation with a 300µV input offset for motor drive or SMPS current sensing.