DS1854 Dual Temperature-Controlled Resistors with Two Monitors

Description

The DS1854 dual temperature-controlled nonvolatile (NV) variable resistors with two monitors consists of two 50kΩ 256-position linear variable resistors, two analog monitor inputs (MON1, MON2), and a direct-to-digital temperature sensor. The device provides an ideal method for setting and temperature-compensating bias voltages and currents in control applications using minimal circuitry. The variable resistor settings are stored in EEPROM memory and can be accessed over the 2-wire serial bus.

An evaluation kit is available: DS185XEVKIT

Key Features

Applications/Uses

Four Total Monitored Channels (Temperature, V_CC, MON1, MON2)
Two External Analog Inputs (MON1, MON2)
Internal Direct-to-Digital Temperature Sensor
Two 50kΩ, Linear, 256-Position, Nonvolatile Temperature-Controlled Variable Resistors
Resistor Settings Changeable Every 2°C
Access to Monitoring and ID Information Configurable with Separate Device Addresses
Resistor Disable (Open-Circuit) Function
2-Wire Serial Interface
Two Buffers with TTL/CMOS-Compatible Inputs and Open-Drain Outputs
Operates from a 3.3V or 5V Supply
SFF-8472 Compatible

	Diagnostic Monitoring
	Instrumentation and Industrial Controls
	Optical Transceivers
	Optical Transponders
	RF Power Amps

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

DS1854

Alarm Flags

Complies or Compatible to SFF-8472

External Calibration

Look-Up Table Compensation

User EEPROM

4-Input Muxable

2 Resistors

50kohms

256

Internal

EEPROM

3.3

2-Wire

Yes

$3.72 @1k

See All Fiber Monitoring and Control (12)

Diagram

Typical Operating Circuit

Application Notes

Application Note 166: Interfacing Digitally Controlled Potentiometers and Resistors to Laser Drivers - DS1854
Application Note 174: Monitor Calibration in Fiber Optic Applications - DS1854
Application Note 228: How to Interpret DS1854, DS1857, and DS1858 Temperature and Voltage Readings - DS1854
Application Note 3481: Using the DS1859 with External EEPROM - DS1854
Application Note 3751: How to Program a Device Using the File Tab in the DS185XEVKIT - DS1854

Evaluation Kits

DS185XEVKIT

Design Guides

Fiber (PDF)
Communications (PDF)
Digital Potentiometers (PDF)

Reliability Reports

Reliability Report: DS1854.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: 1-2 of 2

DS1854 Notes Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

DS1854B-050 50kohms

Active CSBGA;16 pin;16 mm²
Outline Drawing: 21-0355 (PDF)
Land Pattern: 90-0334 (PDF)
Use pkgcode/variation: X16-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

DS1854E-050 50kohms

Active TSSOP;16 pin;33 mm²
Outline Drawing: 21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

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
DS1852 Optical Transceiver Diagnostic Monitor
DS1858 Dual Temperature-Controlled Resistors with Three Monitors

More Like This: View Product Families for Similar Products

See All Fiber Monitoring and Control (12 Products)

Didn't Find What You Need?

Next Day Product Selection Assistance from Applications Engineers
Parametric Search
Applications Help

QuickView Technical Documents Ordering Info More Information

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
Lead-Free Information

Related Products
Notes and Comments
Evaluation Kits

2006-02-27
This page last modified: 2009-10-13