The DS4426 contains four I²C-adjustable current DACs capable of sinking or sourcing current. External resistors set the full-scale range of each output. Each DAC output has 127 sink and 127 source steps that are programmed by the I²C interface. Power-supply tracking functionality is provided for three channels using dedicated control inputs. Once power-supply tracking is accomplished, the current outputs default to zero. Two address pins allow up to four DS4426 devices to exist on the same I²C bus.
Key Features
Applications/Uses
Four Current DACs
50µA to 200µA Adjustable Full-Scale Range
127 Settings Each for Sink and Source
Power-Supply Tracking
Power-Supply Sequencing
Ramp-Up and Ramp-Down Tracking Control
Ratiometric Tracking Support
+2.7V to +5.5V Operation
I²C-Compatible Serial Interface
Two Address Input Pins Allow Up to Four Devices on Same I²C Bus
Lead-Free, 28-Pin TQFN Package (4mm x 4mm) with Exposed Pad
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
1-2 of 2
DS4426
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Status
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
DS4426T+
Active
TQFN;28 pin;16.8 mm²
Outline Drawing: 21-0139 (PDF)
Land Pattern: 90-0035 (PDF)
Use pkgcode/variation: T2844+1*
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