DS4426T+TR MAXIM [Maxim Integrated Products], DS4426T+TR Datasheet

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DS4426T+TR

Manufacturer Part Number
DS4426T+TR
Description
Quad-Channel, I2C-Margining IDACs with Three Channels of Power-Supply Tracking
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
The DS4426 contains four I
capable of sinking or sourcing current. External resis-
tors set the full-scale range of each output. Each DAC
output has 127 sink and 127 source steps that are pro-
grammed by the I
functionality is provided for three channels using dedi-
cated 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 I
19-4541; Rev 1; 7/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
TOP VIEW
*EXPOSED PAD.
Power-Supply Adjustment
Power-Supply Margining
Power-Supply Tracking
Adjustable Current Sink or Source
GAIN3
GAIN2
GAIN1
N.C.
FS1
FS2
FS3
22
23
24
25
26
27
28
2
C bus.
Three Channels of Power-Supply Tracking
21
1
Quad-Channel, I
________________________________________________________________ Maxim Integrated Products
2
+
C interface. Power-supply tracking
20
2
(4mm
THIN QFN
General Description
19
3
DS4426
18
2
×
4
Pin Configuration
C-adjustable current DACs
4mm)
17
5
*EP
16
6
Applications
15
7
14
13
12
11
10
9
8
INN2
INP2
INN1
INP1
A1
A0
GND
2
C-Margining IDACs with
♦ Four Current DACs
♦ Power-Supply Tracking
♦ +2.7V to +5.5V Operation
♦ I
♦ Two Address Input Pins Allow Up to Four Devices
♦ Lead-Free, 28-Pin TQFN Package (4mm x 4mm)
♦ Industrial Temperature Range: -40°C to +85°C
+ Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
* EP = Exposed pad.
Functional Diagram appears at end of data sheet.
DS4426T+
DS4426T+T&R
on Same I
with Exposed Pad
2
C-Compatible Serial Interface
50µA to 200µA Adjustable Full-Scale Range
127 Settings Each for Sink and Source
Power-Supply Sequencing
Ramp-Up and Ramp-Down Tracking Control
Ratiometric Tracking Support
PART
2
C Bus
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
PIN-PACKAGE
28 TQFN-EP*
28 TQFN-EP*
Features
1

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