DS1848:Dual Temperature-Controlled NV Variable Resistor & Memory

The DS1848 Dual Temperature-Controlled Nonvolatile (NV) Variable Resistor consists of two 256- position linear, variable resistors. The DS1848-050 consists of one 10kΩand one 50kΩ, while the DS1848-010 consists of two 10kΩ resistors; both incorporate 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 a minimum of circuitry. The variable resistors settings are stored in EEPROM memory and can be accessed over the industry standard 2-wire serial bus. The value of each variable resistor is determined by a temperature-addressed look-up table, which can assign a unique value to each resistor for every 2°C increment over the -40°C to +95°C range. The output of the digital temperature sensor is also available as a 13-bit, 2's complement value over the serial bus. The interface I/O pins consist of SDA and SCL.

Key Features
  • Two linear taper, temperature-controlled variable resistors
  • DS1848-050
    • One 50kΩ, 256 position
    • One 10kΩ, 256 position
  • DS1848-010
    • Two 10kΩ, 256 position
  • Resistor settings changeable every 2°C
  • Access to temperature data and device control via a 2-wire interface
  • Operates from 3V or 5V supplies
  • Packaging: 14-pin TSSOP, 16-ball CSBGA
  • Operating temperature: -40°C to +95°C
  • Programming temperature: 0°C to +70°C
  • 128 bytes of user EEPROM
DS1848: Pin Assignment
DS1848: Pin Assignment
DataSheet
titleDownload file
DS1848 Data SheetDS1848.pdf
Parametrics
Part NumberTaperPOTsControl InterfaceWiper MemoryStepsREND-TO-END
(kΩ)
Res. Tol.
(%)
Temp. Coeff.
(ppm/°C)
ICC @5V
(µA)
Package/PinsBudgetary
Price
typmaxSee Notes
DS1848Linear22-Wire AddressableNon-Volatile25610+50208501000CSBGA/16
TSSOP/14
$2.46 @1k
Quality and Environmental Data
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  • DS1848:Dual Temperature-Controlled NV Variable Resistor & Memory
Ordering Information
Part NumberNotesStatusRecommended ReplacementPackageTempRoHS
DS1848/NRENo Longer AvailableTSSOP,;14 pin;33.4 mm²-40°C to +85°CNo
DS1848B-01010kohmsActiveCSBGA,;16 pin;16.8 mm²-40°C to +85°CNo
DS1848B-010+10kohmsActiveCSBGA,;16 pin;16.8 mm²-40°C to +85°CLead Free
DS1848B-010+T&R10kohmsActiveCSBGA,;16 pin;16.8 mm²-40°C to +85°CLead Free
DS1848B-010/T&R10kohmsActiveCSBGA,;16 pin;16.8 mm²-40°C to +85°CNo
DS1848B-05010k/50kohmsActiveCSBGA,;16 pin;16.8 mm²-40°C to +85°CNo
DS1848B-050+10k/50kohmsActiveCSBGA,;16 pin;16.8 mm²-40°C to +85°CLead Free
DS1848B-050+T&R10k/50kohmsActiveCSBGA,;16 pin;16.8 mm²-40°C to +85°CLead Free
DS1848B-050/T&R10k/50kohmsNo Longer AvailableDS1848B-050+T&RCSBGA,;16 pin;16.8 mm²-40°C to +85°CNo
DS1848B-C10/T&RNo Longer AvailableCSBGA,;16 pin;16.8 mm²-40°C to +85°CNo
Part NumberNotesStatusRecommended ReplacementPackageTempRoHS
DS1848B-C50/T&RNo Longer AvailableCSBGA,;16 pin;16.8 mm²-40°C to +85°CNo
DS1848E-01010kohmsNo Longer AvailableDS1848E-010+TSSOP,;14 pin;33.4 mm²-40°C to +85°CNo
DS1848E-010+10kohmsActiveTSSOP,;14 pin;33.4 mm²-40°C to +85°CLead Free
DS1848E-010+T&R10kohmsActiveTSSOP,;14 pin;33.4 mm²-40°C to +85°CLead Free
DS1848E-010/T&R10kohmsNo Longer AvailableDS1848E-010+T&RTSSOP,;14 pin;33.4 mm²-40°C to +85°CNo
DS1848E-05010k/50kohmsNo Longer AvailableDS1848E-050+TSSOP,;14 pin;33.4 mm²-40°C to +85°CNo
DS1848E-050+10k/50kohmsActiveTSSOP,;14 pin;33.4 mm²-40°C to +85°CLead Free
DS1848E-050+T&R10k/50kohmsActiveTSSOP,;14 pin;33.4 mm²-40°C to +85°CLead Free
DS1848E-050/T&R10k/50kohmsNo Longer AvailableDS1848E-050+T&RTSSOP,;14 pin;33.4 mm²-40°C to +85°CNo
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