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| 型号： | DS1874T+T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/88页 |
| 文件大小： | 0K |
| 描述： | IC CTLR SFP+ ANLG LDD 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 激光二极管控制器 |
| 通道数： | 1 |
| 电源电压： | 2.85 V ~ 3.9 V |
| 电流 - 电源： | 2.5mA |
| 工作温度： | -40°C ~ 95°C |
| 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) |
| 安装类型： | 表面贴装 |
| 其它名称： | 90-1874T+TRL |
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19-4691; Rev 0; 6/09
SFP+ Controller with Digital LDD Interface
General Description
The DS1874 controls and monitors all functions for SFF,
SFP, and SFP+ modules including all SFF-8472 func-
tionality. The combination of the DS1874 with the
MAX3798/MAX3799 laser driver/limiting amplifier pro-
vides APC loop, modulation current control, and eye
safety functionality. The DS1874 continuously monitors
for high output current, high bias current, and low and
high transmit power to ensure that laser shutdown for
eye safety requirements are met without adding external
components. Six ADC channels monitor V CC , tempera-
ture, and four external monitor inputs (MON1–MON4)
that can be used to meet all monitoring requirements.
MON3 is differential with support for common mode to
V CC . Two digital-to-analog (DAC) outputs with tempera-
ture-indexed lookup tables (LUTs) are available for addi-
tional monitoring and control functionality.
Applications
SFF, SFP, and SFP+ Transceiver Modules
Pin Configuration
TOP VIEW
Features
? Meets All SFF-8472 Control and Monitoring
Requirements
? Laser Bias Controlled by APC Loop and
Temperature LUT to Compensate for Tracking
Error
? Laser Modulation Controlled by Temperature LUT
? Six Analog Monitor Channels: Temperature, V CC ,
MON1–MON4
MON1–MON4 Support Internal and External
Calibration
Scalable Dynamic Range
Internal Direct-to-Digital Temperature Sensor
Alarm and Warning Flags for All Monitored
Channels
? Two 9-Bit Delta-Sigma Outputs with 36 Entry
Temperature LUTs
? Digital I/O Pins: Five Inputs, Five Outputs
? Comprehensive Fault-Measurement System with
Maskable Laser Shutdown Capability
? Flexible, Two-Level Password Scheme Provides
Three Levels of Security
? 256 Additional Bytes Located at A0h Slave
21
20
19
18
17
16
15
Address
? I 2 C-Compatible Interface
N.C. 22
V CC 23
CSELOUT 24
14
13
12
MON1
MON3N
MON3P
? 3-Wire Master to Communicate with the MAX3798/
MAX3799 Laser Driver/Limiting Amplifier
? +2.85V to +3.9V Operating Voltage Range
SCLOUT 25
SDAOUT 26
DS1874
11
10
MON4
TXDOUT
? -40°C to +95°C Operating Temperature Range
? 28-Pin TQFN (5mm x 5mm) Package
LOSOUT 27
OUT1 28
+
*EP
9
8
RSEL
GND
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
1
2
3
4
5
6
7
DS1874T+
-40°C to +95°C
28 TQFN-EP*
DS1874T+T&R
-40°C to +95°C
28 TQFN-EP*
*EXPOSED PAD.
THIN QFN
(5mm × 5mm × 0.8mm)
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
*EP = Exposed pad.
________________________________________________________________ Maxim Integrated Products
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.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1875 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:PON Triplexer and SFP Controller |
| DS1875RT+ | 制造商:Maxim Integrated Products 功能描述:PON TRIPLEXER AND SFP CONTROLLER - Rail/Tube |
| DS1875RT+T&R | 制造商:Maxim Integrated Products 功能描述:PON TRIPLEXER AND SFP CONTROLLER - Tape and Reel |
| DS1875T+ | 功能描述:ADC / DAC多通道 PON Triplexer & SFP Controller RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| DS1875T+T&R | 制造商:Maxim Integrated Products 功能描述:PON TRIPLEXER 38TQFN EP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC SFP CTRLR/TRIPLEXER 38-TQFN 制造商:Maxim Integrated Products 功能描述:ADC / DAC Multichannel PON Triplexer & SFP Controller |
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