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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 V CC , 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
Pin Configuration
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, 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
? I 2 C-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
Ordering Information
TOP VIEW
PART
TEMP RANGE
PIN-PACKAGE
BEN 1
+
16 V CC
DS1863E+
DS1863E+T&R
-40°C to +95°C
-40°C to +95°C
16 TSSOP
16 TSSOP
TX-D 2
15 BMD
N.C. 3
TX-F 4
14 MOD
13 BIAS
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
FETG 5
SDA 6
SCL 7
GND 8
DS1863
TSSOP
(173 mils)
12 GND
11 MON3
10 MON2
9 MON1
______________________________________________ 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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