DS1842A Datasheet PDF | Maxim Integrated

Maxim Integrated DS1842A

The DS1842A integrates the discrete high-voltage components necessary for avalanche photodiode (APD) bias and monitor applications. 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.

Part No.	DS1842A
Datasheet	DS1842A Download
Manufacturer	Maxim Integrated
Description	Bias Output Stage
Buy	Stock & Price

GENERAL DESCRIPTION

FEATURES

♦ 76V Maximum Boost Voltage ♦ Switch FET ♦ 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 DS1842A 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.

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 PIN-PACKAGE 14 TDFN-EP* 14 TDFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package. T&R = Tape and reel. *EP = Exposed pad. Typical Application Circuit 3.3V LX FBIN CBULK DS1842A SW GATE PGND FBOUT R2 CCOMP R COMP COMP D2 CLAMP CURRENT LIMIT MIROUT ROSA MIR1 R1 MIRIN CURRENT MIRROR FB MIR2 EXTERNAL MO...