DS1858 Dual Temperature-Controlled Resistors with Three Monitors

Description

The DS1858 dual temperature-controlled nonvolatile (NV) variable resistors with three monitors consists of two 50kΩ 256-position linear variable resistors, three analog monitor inputs (MON1, MON2, MON3), 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.

Key Features

Applications/Uses

Five Total Monitored Channels (Temperature, V_CC, MON1, MON2, MON3)
Three External Analog Inputs (MON1, MON2, MON3)
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
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

DS1858

Alarm Flags

Complies or Compatible to SFF-8472

External Calibration

Look-Up Table Compensation

User EEPROM

5-Input Muxable

2 Resistors

50kohms

256

Internal

EEPROM

3.3

2-Wire

Yes

$2.38 @1k

See All Fiber Monitoring and Control (12)

Diagram

Typical Operating Circuit

Design Guides

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

Reliability Reports

Reliability Report: DS1858.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

DS1858 Notes Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

DS1858B-050+

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: Lead Free
Materials Analysis

DS1858B-050

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

DS1858E-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

DS1858E-050+

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: Lead Free
Materials Analysis

More Information

New Product Press Release 2003-01-22

Evaluation Kit: DS185XEVKIT

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
DS1854 Dual Temperature-Controlled Resistors with Two Monitors

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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
Lead-Free Information

Related Products
Notes and Comments
Evaluation Kits

2006-05-18
This page last modified: 2007-08-06