ds1878 Maxim Integrated Products, Inc., ds1878 Datasheet

ds1878

Manufacturer Part Number

ds1878

Description

Sfp+ Controller With Digital Ldd Interface

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.DS1878.pdf (98 pages)

Available stocks

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Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ds1878T+

Manufacturer:

Maxim

Quantity:

120

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ds1878T+T

Manufacturer:

MAXIM

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Download datasheet (2Mb)

The DS1878 controls and monitors all functions for SFF,

SFP, and SFP+ modules including all SFF-8472 func-

tionality. The combination of the DS1878 with Maxim

laser driver/limiting amplifier solutions supports VCSEL,

DFB, and EML-based solutions. The device provides

APC loop, modulation current control, and eye safety

functionality. It 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 compo-

nents. Six ADC channels monitor V

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

ture-indexed lookup tables (LUTs) are available for

additional control functionality.

19-5537; Rev 0; 9/10

+ Denotes a lead(Pb)-free/RoHS-compliant package.

T&R = Tape and reel.

* EP = Exposed pad.

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.

DS1878T+

DS1878T+T&R

. Two digital-to-analog (DAC) outputs with tempera-

PART

SFF, SFP, and SFP+ Transceiver Modules

SFP+ Controller with Digital LDD Interface

________________________________________________________________ Maxim Integrated Products

-40°C to +95°C

TEMP RANGE

Ordering Information

General Description

Applications

PIN-PACKAGE

28 TQFN-EP*

, temperature,

♦ Meets All SFF-8472 Control and Monitoring

♦ Laser Bias Controlled by APC Loop and

♦ Laser Modulation Controlled by Temperature LUT

♦ Six Analog Monitor Channels: Temperature, V

♦ Two 9-Bit Delta-Sigma Outputs with 36 Entry

♦ Digital I/O Pins: Five Inputs, Four Outputs

♦ Comprehensive Fault-Measurement System with

♦ Flexible, Two-Level Password Scheme Provides

♦ 256 Additional Bytes Located at A0h Slave

♦ I

♦ 3-Wire Master to Communicate with a Maxim

♦ +2.85V to +5.5V Operating Voltage Range

♦ -40°C to +95°C Operating Temperature Range

♦ 28-Pin TQFN (5mm x 5mm x 0.75mm) Package

Requirements

Temperature LUT to Compensate for Tracking

Error

MON1–MON4

Laser Driver/Limiting Amplifier

Temperature LUTs

Maskable Laser Shutdown Capability

Three Levels of Security

Address

C-Compatible Interface

MON1–MON4 Support Internal and External

Scalable Dynamic Range

Internal Direct-to-Digital Temperature Sensor

Alarm and Warning Flags for All Monitored

Calibration

Channels

Features

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