LTC1427-50
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LTC1427-50

Micropower, 10-Bit Current Output DAC with SMBus Serial Interface

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Part Details
Part Models 2
1ku List Price Starting From $4.34
Features
  • Precision 50µA, ±1.5% Initial Full-Scale Output Current, ±2.5% Over Temperature
  • Wide Output Voltage DC Compliance: –15V to (VCC – 1.3V)
  • Wide Supply Range: 2.7V ≤ VCC ≤ 5.5V
  • Supply Current in Shutdown: 10µA Typ
  • Low Supply Current: 115µA Typ
  • Available in 8-Pin SO
  • SMBus Serial Interface
  • Four Selectable SMBus Addresses
  • DAC Powers Up at Zero or Midscale
  • DAC Contents Are Retained in Shutdown
Additional Details
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The LTC1427-50 is a micropower, 10-Bit current output DAC with an output range of 0µA to 50µA. The DAC output is guaranteed monotonic and DNL is less than 0.9LSB under all operating conditions. Full-scale accuracy is ±2.5% over the commercial temperature range. The LTC1427-50 operates with power supply voltages from 2.7V to 5.5V and the DAC current source output can be biased from (VCC – 1.3V) to –15V.

The LTC1427-50 communicates with external circuitry by using the SMBus serial interface. It acts as an SMBus slave device using one of four selectable SMBus addresses set by the two address pins AD0 and AD1.

On power-up, the DAC output assumes midrange or zero scale, depending on the logic state of the two address pins. The LTC1427-50 can be shut down through the SHDN pin or by setting the SHDN bit = 1 in the SMBus command byte. Digital data for the DAC output is retained internally and the supply current drops to 10µA typically when in shutdown.

The LTC1427-50 is available in an 8-pin SO package.

Applications

  • LCD Contrast and Backlight Brightness Control
  • Power Supply Voltage Adjustment
  • Battery Charger Voltage/Current Adjustment
  • GaAs FET Bias Adjustment
  • Trimmer Pot Elimination
Part Models 2
1ku List Price Starting From $4.34

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC1427CS8-50#PBF
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Product Lifecycle

PCN

Oct 12, 2022

- 22_0255

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Jun 16, 2021

- 21_0026

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC1427CS8-50#PBF

PRODUCTION

LTC1427CS8-50#TRPBF

PRODUCTION

Filter by Model

reset

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Part Models

Product Lifecycle

PCN

Oct 12, 2022

- 22_0255

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Jun 16, 2021

- 21_0026

arrow down

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC1427CS8-50#PBF

PRODUCTION

LTC1427CS8-50#TRPBF

PRODUCTION

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