DS1856
NOT RECOMMENDED FOR NEW DESIGNSDual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection
- Part Models
- 6
- 1ku List Price
- Starting From $4.10
Overview
- SFF-8472 Compatible
- Five Monitored Channels (Temperature, VCC, MON1, MON2, MON3)
- Three External Analog Inputs (MON1, MON2, MON3) That Support Internal and External Calibration
- Scalable Dynamic Range for External Analog Inputs
- Internal Direct-to-Digital Temperature Sensor
- Alarm and Warning Flags for All Monitored Channels
- Two Linear, 256-Position, Nonvolatile Temperature-Controlled Variable Resistors
- Resistor Settings Changeable Every 2°C
- Three Levels of Security
- 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
- -40°C to +95°C Operating Temperature Range
The DS1856 dual, temperature-controlled, nonvolatile (NV) variable resistors with three monitors consists of two 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.
Relative to other members of the family, the DS1856 is essentially a DS1859 with a DS1852-friendly memory map. In particular, the DS1856 can be configured so the 128 bytes of internal Auxiliary EEPROM memory is mapped into Main Device Table 00h and Table 01h, maintaining compatibility between both the DS1858/DS1859 and the DS1852. The DS1856 also features password protection equivalent to the DS1852, further enhancing compatibility between the two.
Applications
- Diagnostic Monitoring
- Instrumentation and Industrial Controls
- Optical Transceivers
- Optical Transponders
- RF Power Amps
Documentation
Data Sheet 1
Reliability Data 1
Application Note 1
Design Note 2
Technical Articles 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS1856B-050+ | Chip-Scale Ball-Grid Array | ||
| DS1856B-050+T&R | Chip-Scale Ball-Grid Array | ||
| DS1856E-020+ | Thin Shrink Small-Outline Package | ||
| DS1856E-020+T&R | Thin Shrink Small-Outline Package | ||
| DS1856E-050+ | Thin Shrink Small-Outline Package | ||
| DS1856E-050+T&R | Thin Shrink Small-Outline Package |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Dec 11, 2018 - 1754N ASSEMBLY |
||
| DS1856E-020+ | ||
| DS1856E-020+T&R | PRODUCTION | |
| DS1856E-050+ | ||
| DS1856E-050+T&R | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Analog to Digital Converters (ADCs) 1 | ||
| DS1859 | NOT RECOMMENDED FOR NEW DESIGNS | Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors |
| Matched Resistors & Transistors 1 | ||
| DS1858 | NOT RECOMMENDED FOR NEW DESIGNS | Dual Temperature-Controlled Resistors with Three Monitors |
Tools & Simulations
IBIS Model 1
Evaluation Kits
Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
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