DS1842
Description
The DS1842 integrates the discrete high-voltage ponents necessary for avalanche photodiode (APD) bias and monitor applications. A switch FET is used in conjunction with an external DC-DC controller to create a boost DC-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.
- 76V Maximum Boost Voltage
- Switch FET
- Current Monitor with a Wide 1µA to 2m A Range, Fast 50ns Time Constant, and 10:1 and 5:1 Ratio
- 2m A Current Clamp with External Shutdown
- Multiple External Filtering Options
- 3mm x 3mm, 14-Pin TDFN Package with Exposed Pad
Features
Applications
APD Biasing GPON Optical Network Unit and Optical Line Transmission
Ordering Information
PART DS1842N+ DS1842N+T&R TEMP RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 14 TDFN-EP- 14 TDFN-EP-
Pin Configuration appears at end of data sheet.
+Denotes a lead(Pb)-free/Ro HS-pliant package. T&R...
