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| 型号： | DS1865T+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/67页 |
| 文件大小： | 0K |
| 描述： | IC PON CONTROL TRI 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | * |
| 类型： | * |
| 应用： | * |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 包装： | 带卷 (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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相关代理商/技术参数 |
参数描述 |
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| DS1866 | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| DS1866+ | 功能描述:数字电位计 IC Log Trimmer RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| DS1866N | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Interface IC |
| DS1866S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Interface IC |
| DS1866SN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Interface IC |
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