DS1852 Optical Transceiver Diagnostic Monitor

Description

The DS1852 transceiver monitor manages all system monitoring functions in a fiber optic data transceiver module, in accordance with proposal SFF-8472. Its functions include 2-wire communications with the host system, EEPROM memory for identification, tracking, and calibration, an ADC with four muxing inputs, three fast comparators, and a temperature sensor to monitor an optical transceiver. The DS1852 has programmable alarm and warning flags for all four analog-to-digital (A/D) conversion values (three user analog inputs plus supply voltage) as well as the temperature. These conditions can be used to determine critical parameters inside each module. The three fast comparators have temperature-compensated programmability. The temperature dependencies of the trip points aid in assessing critical conditions.

Key Features

Applications/Uses

Implements proposals of SFF-8472 at device address A2h
[Note: requires use of external EEPROM at address A0h for full compliance.]
Scaleable four-input muxing analog-to-digital converter (ADC)
Direct-to-digital temperature converter
Programmable alarm and warning conditions
Temperature-compensated, programmable three-input muxing fast comparator
Access temperature, data, and device control through a 2-wire interface
Operates from 3V or 5V supplies
Packaging: 25-ball BGA
Operating temperature: -40°C to +100°C
Programming temperature: 0°C to +70°C
Three levels of security
127 bytes EEPROM for security level 1
128 bytes EEPROM for security level 2
Address space is GBIC compliant (with use of external EEPROM at device address A0h)

High-Speed Access (Telecom)

Key Specifications: Fiber Monitoring and Control

Part Number

Features

ADCs

Resolution
(bits)

DACs/ Resistors

FS Out
(kΩ)

Steps

Temp. Sensor

Memory

V_SUPPLY
(V)

Control Interface

EV Kit

Price

See Notes

DS1852

Alarm/Warning Flags

Complies or Compatible to SFF-8472

External Calibration

Internal Calibration

User EEPROM

5-Input Muxable

None

Internal

EEPROM

3.3

2-Wire

$2.55 @1k

See All Fiber Monitoring and Control (12)

Diagram

Block Diagram

Application Notes

Application Note 174: Monitor Calibration in Fiber Optic Applications - DS1852
Application Note 217: How to Interpret DS1852 Temperature and Voltage Readings - DS1852
Application Note 2090: How to Configure the DS1852 Alarm and Warning Thresholds to Comply with SFF-8472 - DS1852
Application Note 3481: Using the DS1859 with External EEPROM - DS1852

Design Guides

Thermal Management (PDF)
Fiber (PDF)

Reliability Reports

Reliability Report: DS1852.pdf

Software/Models

none

Ordering Information

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. More: SeeFull Data Sheet or Part 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.

Devices: 1-4 of 4

DS1852 Notes Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

DS1852B-000 N/A

Active CSBGA;25 pin;25 mm²
Outline Drawing: 21-0361 (PDF)
Land Pattern: 90-0298 (PDF)
Use pkgcode/variation: X25-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

DS1852B-000/T&R N/A

Active CSBGA;25 pin;25 mm²
Outline Drawing: 21-0361 (PDF)
Land Pattern: 90-0298 (PDF)
Use pkgcode/variation: X25-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

DS1852B-000+ N/A

Active CSBGA;25 pin;25 mm²
Outline Drawing: 21-0361 (PDF)
Land Pattern: 90-0298 (PDF)
Use pkgcode/variation: X25+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis

DS1852B-000+T&R N/A

Active CSBGA;25 pin;25 mm²
Outline Drawing: 21-0361 (PDF)
Land Pattern: 90-0298 (PDF)
Use pkgcode/variation: X25+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis

Notes and Comments

The DS1852 is offered for sale free of any royalty or licensing fees. However, users should be aware that implementation of the SFF-8472 proposed specifications may require the use of an invention covered by patent rights. Since these patents relate to the SFF-8472 specification and not to the DS1852 itself, licensing questions should be directed to Finisar Corp.

More Information

New Product Press Release 2002-04-08

Temperature Family by Product Type

Related Products

DS1845 Dual NV Potentiometer and Memory
DS1847 Dual Temperature-Controlled NV Variable Resistor
DS1848 Dual Temperature-Controlled NV Variable Resistor & Memory
DS1855 Dual Nonvolatile Digital Potentiometer and Secure Memory

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See All Fiber Monitoring and Control (12 Products)

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Description
Key Features
Applications/Uses
Key Specifications
Diagram

Data Sheet
Application Notes
Design Guides
Engineering Journals
Reliability Reports
Software/Models
Evaluation Kits

Price and Availability
Samples
Buy Online
Package Information
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Notes and Comments
Evaluation Kits

2006-01-19
This page last modified: 2009-10-14