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DS4422, DS4424
Two-/Four-Channel, I²C, 7-Bit Sink/Source Current DAC
Low-Cost, Sink/Source Current DACs Simplify Power-Supply Margin Testing
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Status
Active: In Production.
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.
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Data Sheet
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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
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Applications/Uses
- Adjustable Current Sink or Source
- Power-Supply Adjustment
- Power-Supply Margining
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Key Specifications:
| Precision DACs (4-12 Bits) |
| Part Number |
Resolution
(bits) |
Channels |
Output Type |
Reference |
INL
(±LSB) |
Interface |
Supply Range
(V) |
Supply Range
(V) |
Oper. Temp.
(°C) |
Budgetary Price |
| max |
min |
max |
See Notes |
| DS4422 |
7 |
2 |
Current- Buffered |
Ext. |
1 |
Serial - I2C |
2.7 |
5.5 |
-40 to +85 |
$0.63 @1k |
| DS4424 |
4 |
$0.77 @1k |
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See All Precision DACs (4-12 Bits) (268)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-4744
Rev 1;
2009-07-28
This page last modified: 2009-07-28
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