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DS1842A: 76V, APD, Dual Output Current Monitor Data Sheet (Rev. 1)9/30/2011PDF205K
Overview
Features and Benefits
- 76V Maximum Boost Voltage
- 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
- Precision Voltage Feedback
- Multiple External Filtering Options
- 3mm x 3mm, 14-Pin TDFN Package with Exposed Pad
Product Details
The DS1842A integrates the discrete high-voltage components necessary for avalanche photodiode (APD) bias and monitor applications. A precision voltage-divider network is used in conjunction with an external DC-DC controller and FET 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
Product Categories
Product Lifecycle
Not Recommended for New Designs
This designates products ADI does not recommend broadly for new designs.
Documentation & Resources
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DS1842A Reliability Data1/12/2023PDF27K
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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