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參數(shù)資料
| 型號(hào)： | DS1865T+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 1/67頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC PON CONTROL TRI 28-TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 系列： | * |
| 類型： | * |
| 應(yīng)用： | * |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-WFQFN 裸露焊盤(pán) |
| 供應(yīng)商設(shè)備封裝： | 28-TQFN-EP（5x5） |
| 包裝： | 帶卷 (TR) |
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General Description
The DS1865 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 bias current and a temper-
ature-indexed lookup table (LUT) that controls the mod-
ulation 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 with-
out adding external components. Six ADC channels
monitor VCC, internal temperature, and four external
monitor inputs (MON1–MON4) that can be used to meet
transmitter and video receive signal monitoring require-
ments. Two digital-to-analog converter (DAC) outputs
are available for biasing the video receiver channel, and
five digital I/O pins are present to allow additional moni-
toring and configuration.
Applications
Optical Triplexers with GEPON, BPON, or GPON
Transceiver
Features
Meets GEPON, BPON, and GPON Timing
Requirements for Burst-Mode Transmitters
Bias Current Control Provided by APC Loop with
Tracking-Error Compensation
Modulation Current is Controlled by a
Temperature-Indexed Lookup Table
Laser Power Leveling from -6dB to +0dB
Two 8-Bit Analog Outputs, One is Controlled by
MON4 Voltage for Video Amplifier Gain Control
Internal Direct-to-Digital Temperature Sensor
Six Analog Monitor Channels: Temperature, VCC,
MON1, MON2, MON3, and MON4
Five Digital I/O Pins for Additional Control and
Monitoring Functions
Comprehensive Fault Management System with
Maskable Laser Shutdown Capability
Two-Level Password Access to Protect
Calibration Data
120 Bytes of Password 1 Protected Nonvolatile
Memory
128 Bytes of Password 2 Protected Nonvolatile
Memory in Main Device Address
128 Bytes of Nonvolatile Memory Located at A0h
Slave Address
I2C-Compatible Interface for Calibration and
Monitoring
Operating Voltage: 2.85V to 3.9V
Operating Temperature Range: -40°C to +95°C
Packaging: 28-Pin Lead-Free TQFN (5mm x 5mm
x 0.8mm)
DS1865
PON Triplexer Control and
Monitoring Circuit
______________________________________________
Maxim Integrated Products
1
19-5044; Rev 1; 11/09
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.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad.
T&R = Tape and reel.
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
DS1865T+
-40°C to +95°C
28 TQFN-EP*
DS1865T+T&R
-40°C to +95°C
28 TQFN-EP*
TQFN
(5mm x 5mm x 0.8mm)
TOP VIEW
26
27
25
24
10
9
11
TX-D
FETG
VCC
GND
N.C.
*EP
*EXPOSED PAD.
12
BEN
BIAS
GND
M4DAC
MOD
DAC1
MON4
1
2
4
5
6
7
20
21
19
17
16
15
N.C.
SCL
SDA
TX-F
VCC
3
18
28
8
23
13
LOSI
D0
BMD
D2
D3
D1
22
14
MON3
MON1
MON2
N.C.
DS1865
Pin Configuration
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