DS1842A
Description
Features
- 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
- Precision Voltage Feedback
- Multiple External Filtering Options
- 3mm x 3mm, 14-Pin TDFN Package with Exposed Pad
The DS1842A integrates the discrete high-voltage ponents necessary for avalanche photodiode (APD) bias and monitor applications. A switch FET and precision voltage-divider network are 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 precision voltage-divider network is provided for precise control of the APD bias voltage. The device also includes a dual current mirror to monitor the APD current.
Applications
APD Biasing GPON ONU and OLT
PART DS1842AN+ DS1842AN+T&R
Ordering Information
TEMP RANGE -40°C to +85°C -40°C to +85°C...
