DS1842A

LAST TIME BUY

76V, APD, Dual Output Current Monitor

APD Bias Output Stage and Fast Current Monitor on a Single Chip

Data Sheet (Rev. 1) Product Selection Table

Part Models: 2
1ku List Price: price unavailable

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Overview

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

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

Part Models: 2
1ku List Price: price unavailable

Documentation

Data Sheet 1

DS1842A: 76V, APD, Dual Output Current Monitor Data Sheet (Rev.1) 09/30/2011

Reliability Data 1

DS1842A Reliability Data 01/12/2023

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
DS1842AN+	Thin Dual Flatpack No Leads	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
DS1842AN+T&R	Thin Dual Flatpack No Leads	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Aug 2, 2025 - 2505 PIN/ERRATA
		pcn_2505
DS1842AN+		pcn_2505
Jun 20, 2016 - 1612 ASSEMBLY
		pcn_1612
DS1842AN+
DS1842AN+T&R

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Digital to Analog Converters (DACs) 1
DS1875	LAST TIME BUY	PON Triplexer and SFP Controller
Matched Resistors & Transistors 2
DS1842	NOT RECOMMENDED FOR NEW DESIGNS	76V, APD, Bias Output Stage with Current Monitoring
DS1843	NOT RECOMMENDED FOR NEW DESIGNS	Fast Sample-and-Hold Circuit

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