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.
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
DS1863
Applications
BPON, GPON, and GEPON Burst-Mode Transmitters
Laser Control and Monitoring
Broadband Local Access
Pin Configuration
TOP VIEW
+
BEN 1
TX-D 2
N.C. 3
TX-F 4
FETG 5
SDA 6
SCL 7
GND 8
16 V
CC
15 BMD
14 MOD
13 BIAS
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.
DS1863
12 GND
11 MON3
10 MON2
9 MON1
TSSOP
(173 mils)
______________________________________________
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.
Burst-Mode PON Controller
With Integrated Monitoring
DS1863
ABSOLUTE MAXIMUM RATINGS
Voltage on V
CC
, SDA and SCL Pin Relative
to Ground....................................................................-0.5V to 6V
Voltage on BEN, TX-D, TX-F, MON1–MON3,
BMD Relative to Ground ...............................-0.5V to V
CC
+ 0.5V
(subject to not exceeding +6V)
Operating Temperature Range ...........................-40°C to +95°C
Programming Temperature Range .........................0°C to +70°C
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature ...................See J-STD-020 specification
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
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Analogue and Mixed Signal
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