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DS1863

Burst-Mode PON Controller With Integrated Monitoring

Maxim Integrated 

19-4883; Rev 2; 8/09

Burst-Mode PON Controller

With Integrated Monitoring

General Description

The DS1863 controls and monitors all the burst-mode

transmitter and video receiver biasing functions for a

passive optical network (PON) transceiver. It has an

APC loop with tracking-error compensation that pro-

vides the reference for the laser driver’s bias current

and a temperature-indexed lookup table (LUT) that

controls the modulation current. It continually monitors

for high output current, high bias current, and low and

high transmit power with its internal fast comparators to

ensure that laser shutdown for eye safety requirements

are met without adding external components. Five ADC

channels monitor VCC, internal temperature, and three

external monitor inputs (MON1, MON2, MON3) that can

be used to meet transmitter and receive monitoring

requirements.

Applications

BPON, GPON, and GEPON Burst-Mode Transmitters

Laser Control and Monitoring

Broadband Local Access

Features

♦ Meets BPON, GPON, and GEPON Timing

Requirements for Burst-Mode Transceivers

♦ Bias Current Control Provided by APC Loop with

Tracking Error Compensation

♦ Modulation Current Is Controlled by a

Temperature-Indexed Lookup Table

♦ Supports 0dB, -3dB, -6dB Power Leveling

Settings with No Additional Calibration

♦ Internal Direct-to-Digital Temperature Sensor

♦ Five Analog Monitor Channels: Temperature, VCC,

MON1, MON2, and MON3

♦ Comprehensive Fault Management System with

Maskable Laser Shutdown Capability

♦ Two-Level Password Access to Protect

Calibration Data

♦ 120 Bytes of Password 1 (PW1) Protected

Nonvolatile Memory

♦ 128 Bytes of Password 2 (PW2) Protected

Nonvolatile Memory

♦ I2C-Compatible Interface for Calibration and

Monitoring

♦ Operating Voltage: 2.85V to 3.9V

♦ Operating Temperature: -40°C to +95°C

♦ 16-Pin, Lead-Free TSSOP Package

Pin Configuration

TOP VIEW

+

BEN 1

TX-D 2

N.C. 3

TX-F 4

FETG 5

DS1863

SDA 6

SCL 7

GND 8

16 VCC

15 BMD

14 MOD

13 BIAS

12 GND

11 MON3

10 MON2

9 MON1

TSSOP

(173 mils)

Ordering Information

PART

DS1863E+

DS1863E+T&R

TEMP RANGE

-40°C to +95°C

-40°C to +95°C

PIN-PACKAGE

16 TSSOP

16 TSSOP

+Denotes a lead(Pb)-free/RoHS-compliant package.

T&R = Tape and reel.

______________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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