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Digital-to-Analog Converters
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DS4422
Two-/Four-Channel, I²C, 7-Bit Sink/Source Current DAC
Low-Cost, Sink/Source Current DACs Simplify Power-Supply Margin Testing
MyMaxim SubscriptionsProduct 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) | 0.25 |
| Package/Pins | TDFN/14 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | 0.81 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | Two-/Four-Channel, I²C, 7-Bit Sink/Source Current DAC | Nov 02, 2017 | |
| App Note | Using the DS4424 to Margin the Output Voltage of a DC-DC Converter | ||
| Tutorial | Calibration Circuit Library |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
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) | 0.25 |
| Package/Pins | TDFN/14 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | 0.81 |
Key Features
- Two (DS4422) or Four (DS4424) 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
- Two Address Input Pins Allow Four Devices on Same I²C Bus
- Low Cost
- Small Package (14-Pin, 3mm x 3mm TDFN)
- -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 DS4422 and DS4424 contain two or four 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.
Technical Docs
| Data Sheet | Two-/Four-Channel, I²C, 7-Bit Sink/Source Current DAC | Nov 02, 2017 | |
| App Note | Using the DS4424 to Margin the Output Voltage of a DC-DC Converter | ||
| Tutorial | Calibration Circuit Library |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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