Maxim > Products > Optoelectronics > DS1884

DS1884

SFP and PON ONU Controller with Digital LDD Interface

Works with MAX3710 LDD/Laser Amplifier to Implement Extinction Ratio Control and Fully Support SFF-8472 Functionality

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The DS1884 controls and monitors all functions for SFF, SFP, and SFP+ modules including all SFF-8472 functionality. The combination of the DS1884 with the MAX3710 supports all transmitter and receiver functionality. The DS1884 includes modulation current control and APC set-point control with tracking error adjustment. It continually monitors RSSI for LOS generation. A 13-bit analog-to-digital converter (ADC) monitors V_CC, temperature, laser bias, laser modulation, and receive power to meet all monitoring requirements. Receive power measurement is differential with support for common mode to V_CC. A 9-bit digital-to-analog converter (DAC) is included with temperature compensation for APD bias control.

Data Sheet

Download	Rev 1	(PDF, 3.3MB)
E-Mail

Key Features

Meets All SFF-8472 Control and Monitoring Requirements
Companion Controller for the MAX3710 Laser Driver/Limiting Amplifier and MAX3945 Limiting Amplifier
MAX3710/DS1884 Combination Supports Broad Spectrum of Continuous Mode and PON Applications Up to 2.5GHz
Temperature Lookup Table (LUT) to Compensate for APC Tracking Error and Dual Closed-Loop Variables
Three Laser Control Modes
- Dual Closed Loop: Laser Bias and Laser Modulation Are Automatically Controlled with Multiple LUTs to Compensate Dual Closed-Loop Calibration Points
- APC Loop: Laser Bias Automatically Controlled, Laser Modulation Controlled by Temperature LUT
- Open Loop: Laser Bias and Laser Modulation Are Controlled by Temperature LUTs
13-Bit ADC
- Laser Bias, Laser Power, and Receive Power Support Internal and External Calibration
- Differential Receive Power Input
- Scalable Dynamic Range
- Internal Direct-to-Digital Temperature Sensor
- Alarm and Warning Flags for All Monitored Channels
9-Bit DAC with Temperature Compensation for APD Bias
Digital I/O Pins: Transmit Disable Input/Output, Rate Select Input/Output, LOS Input/Output, Transmit Fault Input/Output, and IN1 Status Monitor and Fault input
Comprehensive Fault Measurement System with Maskable Alarm/Warnings
Flexible Password Scheme Provides Three Levels of Security
256-Byte A0h and 128-Byte Upper A2h EEPROM
I²C-Compatible Interface
3-Wire Master to Communicate with the MAX3710 Laser Driver/Limiting Amplifier and MAX3945 Limiting Amplifier

Applications/Uses

SFF, SFP, and PON ONU Modules

Key Specifications:

Fiber Monitoring and Control

Part Number

ADCs

Resolution
(bits)

DACs/ Resistors

FS Out
(kΩ)

Steps

Temp. Sensor

Memory

V_SUPPLY
(V)

Control Interface

EV Kit

Budgetary Price

See Notes

DS1884

5-Input Muxable

2 DACs

None

Internal

EEPROM

2.85 to 3.9

I²C

$1.25 @1k

See All Fiber Monitoring and Control (20)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Block Diagram

Product Guides

Communications (PDF)

Reliability Reports

Reliability Report:

DS1884.pdf

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1884T+			Active	TQFN;24 pin;20 mm² Outline Drawing:21-0201 (PDF) Land Pattern: 90-0083 (PDF) Use pkgcode/variation: T2445+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1884T+T			Active	TQFN;24 pin;20 mm² Outline Drawing:21-0201 (PDF) Land Pattern: 90-0083 (PDF) Use pkgcode/variation: T2445+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Similar Products by Function

MAX3945	1.0625Gbps to 11.3Gbps, SFP+ Dual-Path Limiting Amplifier
DS1856	Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection
DS1878	SFP+ Controller with Digital LDD Interface
See All Fiber Monitoring and Control (20 Products)

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-5928 Rev 1; 2011-08-03
This page last modified: 2011-08-03