LTC1329
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LTC1329

Micropower 8-Bit Current Output D/A Converter

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Info: : PRODUCTION tooltip
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Part Details
Part Models 8
1ku List Price Starting From $3.21
Features
  • Precision 10µA ± 2.5% or 50µA ± 2.5% Full Scale DAC Output Current
  • Wide Output Voltage DC Compliance: –17V to 2.5V
  • Wide Supply Range: 2.5V ≤­ VCC ≤­ 6.5V
  • Supply Current in Shutdown: 0.2µA
  • Low Supply Current: 55µA for -10 Version, 65µA for -50 Version
  • Available in 8-Pin SO and PDIP
  • Triple Mode Interface Modes
  • Can Read Back the 8-Bit DAC Value in SPI Mode
  • DAC Powers Up at Mid-Range
Additional Details
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The LTC1329-10/LTC1329-50 are micropower 8-bit current output D/A converters (DACs) with an output range of 0µA to 10µA and 0µA to 50µA for the -10 and -50 versions respectively. In 3.3V or 5V systems, the DAC current output can be biased from –17V to 2V or –17V to 2.5V respectively. The supply current is only 0.2µA in Shutdown.

The LTC1329 can communicate with external circuitry by using one of three interface modes: standard SPI mode and two pulse modes. Upon power-up, the internal counter resets to 80H, the DAC output assumes mid-range and the chip is configured to SPI or pulse mode depending on the signal level at CS.

In SPI mode, the system MPU can serially transfer 8-bit data to and from the LTC1329. In pulse mode, the upper six bits of the DAC output can be programmed for increment-only (1-wire interface) or increment/decrement (2-wire interface) operation depending on the signal level at DIN. In increment-only operation, when counter increases beyond full scale, the counter rolls over and sets the DAC to zero. In this way, a single pulse applied to CLK increases the upper six bits of the counter by one step and 63 pulses decrease them by one step. In increment/decrement, the counter stops incrementing at full scale and decrementing at zero and will not roll over.

LTC1329 is available in 8-pin PDIP and SO packages.

Applications

  • LCD Contrast Control
  • Backlight Brightness Control
  • Power Supply Voltage Adjustment
  • Battery Charger Current/Voltage Adjustment
  • GaAs FET Bias Adjustment
  • Trimmer Pot Elimination
  • Low Power and Battery-Operated Systems
  • Handheld or Portable Instruments
Part Models 8
1ku List Price Starting From $3.21

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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LTC1329CS8-10#TRPBF
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LTC1329CS8-50#TRPBF
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Product Lifecycle

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Dec 14, 2023

- 22_0255

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

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Jun 16, 2021

- 21_0026

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

LTC1329ACS8-50#PBF

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LTC1329CS8-10#PBF

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LTC1329CS8-10#TRPBF

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LTC1329CS8-50#PBF

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LTC1329IS8-50#PBF

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LTC1329IS8-50#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Dec 14, 2023

- 22_0255

arrow down

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

LTC1329ACS8-50#PBF

PRODUCTION

LTC1329ACS8-50#TRPBF

PRODUCTION

LTC1329CS8-10#PBF

PRODUCTION

LTC1329CS8-10#TRPBF

PRODUCTION

LTC1329CS8-50#PBF

PRODUCTION

LTC1329CS8-50#TRPBF

PRODUCTION

LTC1329IS8-50#PBF

PRODUCTION

LTC1329IS8-50#TRPBF

PRODUCTION

Jun 16, 2021

- 21_0026

arrow down

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

LTC1329ACS8-50#PBF

PRODUCTION

LTC1329ACS8-50#TRPBF

PRODUCTION

LTC1329CS8-10#PBF

PRODUCTION

LTC1329CS8-10#TRPBF

PRODUCTION

LTC1329CS8-50#PBF

PRODUCTION

LTC1329CS8-50#TRPBF

PRODUCTION

LTC1329IS8-50#PBF

PRODUCTION

LTC1329IS8-50#TRPBF

PRODUCTION

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