DS1842N+T&R

The DS1842N+T&R is a 76V, APD, bias output stage with current monitoring in 14 pin TDFN package. It integrates the discrete high-voltage components necessary for avalanche photodiode (APD) bias and monitor applications. A switch FET is used in conjunction with an external DC to DC controller to create a boost DC to DC converter. A current clamp limits current through the APD and also features an external shutdown. The device also includes a dual current mirror to monitor the APD current. Typical applications include APD biasing and GPON optical network unit and optical line transmission.

• Maximum boost voltage is 76V
• Operating temperature range from -40°C to 85°C
• Current monitor with a wide 1μA to 2mA range, fast 50ns time constant and 10:1 and 5:1 ratio
• 2mA current clamp with external shutdown
• Multiple external filtering option
• Switching frequency from 0 to 1.2MHz

Tillämpningar

Power Management

Kommentarer

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