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Dual-Channel, I²C Adjustable Sink/Source Current DAC

Inexpensive Power-Supply Margining Made Easy

Product Details

Key Features

Applications/Uses

Parametric specs for Precision DACs (< 1MHz)
Resolution (bits) 7
# Channels 2
Interface Serial - I2C
Output Type Current- Buffered
Reference Ext.
INL (±LSB) (max) 1
Supply Range (V) (min) 2.7
Supply Range (V) (max) 5.5
ICC (mA) (max) 0.15
Package/Pins UMAX/8
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
0.66
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Simplified Block Diagram

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Parameters

Parametric specs for Precision DACs (&lt; 1MHz)
Resolution (bits) 7
# Channels 2
Interface Serial - I2C
Output Type Current- Buffered
Reference Ext.
INL (±LSB) (max) 1
Supply Range (V) (min) 2.7
Supply Range (V) (max) 5.5
ICC (mA) (max) 0.15
Package/Pins UMAX/8
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
0.66

Key Features

  • Two Current DACs
  • Full-Scale Current 50µA to 200µA
  • Full-Scale Range for Each DAC Determined by External Resistors
  • 127 Settings Each for Sink and Source Modes
  • I²C-Compatible Serial Interface
  • Low Cost
  • Small Package (8-Pin µSOP)
  • -40°C to +85°C Temperature Range
  • 2.7V to 5.5V Operating Range

Applications/Uses

  • Adjustable Current Sink or Source
  • Power-Supply Adjustment
  • Power-Supply Margining

Description

The DS4432 contains two I²C programmable current DACs that are each capable of sinking and sourcing current up to 200µA. Each DAC output has 127 sink and 127 source settings that are programmed using the I²C interface. The current DAC outputs power up in a high-impedance state.

Simplified Block Diagram

DS4432: Typical Operating Circuit DS4432: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .