DS1863 Burst-Mode PON Controller With Integrated Monitoring

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The DS1863 controls and monitors all the burst-mode transmitter and video receiver biasing functions for a passive optical network (PON) triplexer. It has an APC loop with tracking-error compensation that provides 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 V_CC, internal temperature, and three external monitor inputs (MON1–3) that can be used to meet transmitter and receive monitoring requirements.

Key Features

Applications/Uses

	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, V_CC, 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 5.5V
	Operating Temperature: -40°C to +95°C
	16-Pin Lead-Free TSSOP Package

	BPON, GPON and GEPON, Burst-Mode Transmitters
	Broadband Local Access
	Laser Control and Monitoring

Key Specifications: Fiber Monitoring and Control

Part Number

Features

ADCs

Resolution (Bits)

DACs, Pots, Resistors

Temp. Sensor

Memory

Supply Voltage (V)

Control Interface

EV-Kit

Package

Smallest Available Package (max w/pins) (mm²)

RoHS Available

Operating Temp. Range (°C)

Price^*

DS1863

•	Alarm/Warning Flags

•	Complies or Compatible to SFF-8472

•	Internal Calibration

•	Look-Up Table Compensation

•	Maskable Laser Shutdown Capability

•	Scalable Dynamic Ranging (Right Shifting)

•	User EEPROM

5-Input Muxable

1 DAC

Internal

EEPROM

3.3
5

I²C

Yes

TSSOP/16

Yes

-40 to +95

$1.83 @ 1k

See All Fiber Monitoring and Control (9)

Notes:
^*This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.