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| 型号： | DS1875T+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/92页 |
| 文件大小： | 0K |
| 描述： | IC SFP CTRLR/TRIPLEXER 38-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 90 |
| 应用： | 光纤 |
| 接口： | I²C |
| 电源电压： | 2.85 V ~ 3.9 V |
| 封装/外壳： | 38-WFQFN 裸露焊盘 |
| 供应商设备封装： | 38-TQFN（5x7） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
| 产品目录页面： | 1431 (CN2011-ZH PDF) |
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General Description
The DS1875 controls and monitors all functions for burst-
mode transmitters, APD receivers, and video receivers.
It also includes a power-supply controller for APD bias
generation, and provides all SFF-8472 diagnostic and
monitoring functionality. The combined solution of the
DS1875 and the MAX3643 laser driver provides APC
loop, modulation current control, and eye safety func-
tionality. Ten ADC channels monitor VCC, temperature
(both internal signals), and eight external monitor inputs
(MON1–MON8) that can be used to meet transmitter,
digital receiver, video receiver, and APD receiver-signal
monitoring requirements. Four total DAC outputs are
available. A PWM controller with feedback and compen-
sation pins can be used to generate the bias for an APD
or as a step-down converter. Five I/O pins allow addi-
tional monitoring and configuration.
Applications
BPON, GPON, or EPON Optical Triplexers
SFF, SFP, and SFP+ Transceiver Modules
APD Controller
Features
Meets All PON Burst-Timing Requirements for
Burst-Mode Operation
Laser Bias Controlled by APC Loop and
Temperature Lookup Table (LUT)
Laser Modulation Controlled by Temperature LUT
Six Total DACs: Four External, Two Internal
Two 8-Bit DACs, One of Which is Optionally
Controlled by MON4 Voltage
Internal 8-Bit DAC Controlled by a Temperature-
Indexed LUT
PWM Controller
Boost or Buck Mode
Boost Mode: Uses Optional External
Components, Up to 90V Bias Generation
131kHz, 262kHz, 525kHz, or 1050kHz Selectable-
Switching Frequency
APD Overcurrent Protection Using Optional Fast
Shutdown
10 Analog Monitor Channels: Temperature, VCC,
Eight Monitors
Internal, Factory-Calibrated Temperature Sensor
RSSI with 29dB Electrical Dynamic
Five I/O Pins for Additional Control and
Monitoring Functions, Four of Which are Either
Digital I/O or Analog Monitors
Comprehensive Fault-Measurement System with
Maskable Laser Shutdown Capability
Two-Level Password Access to Protect
Calibration Data
120 Bytes of Password-1 Protected Memory
128 Bytes of Password-2 Protected Memory in
Main Device Address
256 Additional Bytes Located at A0h Slave
Address
I2C-Compatible Interface for Calibration and
Monitoring
2.85V to 3.9V Operating Voltage Range
-40°C to +95°C Operating Temperature Range
38-Pin TQFN (5mm x 7mm) Package
DS1875
________________________________________________________________
Maxim Integrated Products
1
TOP VIEW
TQFN
(5mm
× 7mm × 0.8mm)
13
14
15
16
17
18
19
MON5/D0
MON6/D1
MON7/D2
MON8/D3
MON1
MON2
MON4
38
37
36
35
34
33
32
1
2
3
4567
89
10
11
12
N.C.
VCC
SW
GND
LOSI
N.C.
GND
V
CC
TX-D
N.C.
FETG
N.C.
TX-F
SCL
SDA
BEN
31
30
29
28
27
26
25
24
23
22
21
20
N.C.
MON3N
MON3P
DAC1
GND
M4DAC
FB
BIAS
MOD
COMP
BMD
V
CC
+
*EP
*EXPOSED PAD.
DS1875
Pin Configuration
Ordering Information
Rev 1; 10/08
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-free/RoHS-compliant package.
T&R = Tape and reel.
*
EP = Exposed pad.
PART
TEMP RANGE
PIN-PACKAGE
DS1875T+
-40°C to +95°C
38 TQFN-EP*
DS1875T+T&R
-40°C to +95°C
38 TQFN-EP*
PON Triplexer and SFP Controller
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| DS1875T+T&R | 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+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:PON Triplexer and SFP Controller |
| DS1876 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:SFP Controller with Dual LDD Interface |
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