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DS1858
Dual Temperature-Controlled Resistors with Three Monitors
Industry's First Integrated Controller-Monitors for SFF/SFP Optical Modules
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Status
Active: In Production.
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.
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Data Sheet
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An evaluation kit is available: DS1854EVKIT, DS1857EVKIT, DS1858EVKIT, DS1859EVKIT, DS185XEVKIT
Key Features
- Five Total Monitored Channels (Temperature, VCC, 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
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Applications/Uses
- Diagnostic Monitoring
- Instrumentation and Industrial Controls
- Optical Transceivers
- Optical Transponders
- RF Power Amps
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Key Specifications:
| Fiber Monitoring and Control |
| Part Number |
ADCs |
Resolution
(bits) |
DACs/ Resistors |
FS Out
(kΩ) |
Steps |
Temp. Sensor |
Memory |
VSUPPLY
(V) |
Control Interface |
EV Kit |
Budgetary Price |
| See Notes |
| DS1858 |
5-Input Muxable |
12 |
2 Resistors |
50kohms |
256 |
Internal |
EEPROM |
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2-Wire |
Yes |
$2.59 @1k |
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See All Fiber Monitoring and Control (19)
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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.
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Diagram
 Typical Operating Circuit
Application Notes
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Notes |
Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| DS1858B-050
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Active |
CSBGA;16 pin;16 mm²
Outline Drawing:21-0355 (PDF)
Land Pattern: 90-0334 (PDF)
Use pkgcode/variation: X16-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| DS1858B-050+
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Active |
CSBGA;16 pin;16 mm²
Outline Drawing:21-0355 (PDF)
Land Pattern: 90-0334 (PDF)
Use pkgcode/variation: X16+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS1858E-050
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50kohms |
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| DS1858E-050+
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16+1*
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-40°C to +85°C
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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.
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Similar Products by Function
| 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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Similar Products by Application
Evaluation Kits
More Information
Didn't Find What You Need?
Information Index
Rev 1;
2006-05-18
This page last modified: 2007-08-06
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