DS4424：Two-/Four-Channel, I²C, 7-Bit Sink/Source Current DAC

Low-Cost, Sink/Source Current DACs Simplify Power-Supply Margin Testing

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.

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

DS4422, DS4424: Typical Operating Circuit

Applications/Uses

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

DataSheet

title	Download file
DS4422-DS4424 Data Sheet	DS4422-DS4424.pdf

Parametrics

Part Number	Resolution (bits)	Channels	Output Type	Reference	INL (±LSB)	Interface	Supply Range (V)	Supply Range (V)	I_CC (mA)	Package/Pins	Oper. Temp. (°C)	Budgetary Price
Part Number	Resolution (bits)	Channels	Output Type	Reference	max	Interface	min	max	max	Package/Pins	Oper. Temp. (°C)	See Notes
DS4422	7	2	Current- Buffered	Ext.	1	Serial - I2C	2.7	5.5	0.25	TDFN-EP/14	-40 to +85	$0.72 @1k
DS4424	7	4	Current- Buffered	Ext.	1	Serial - I2C	2.7	5.5	0.25	TDFN-EP/14	-40 to +85	$0.90 @1k