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Dallas Semiconducotr - (DS4402 / DS4404) I2C Adjustable Current DAC

Numéro de référence DS4404
Description (DS4402 / DS4404) I2C Adjustable Current DAC
Fabricant Dallas Semiconducotr 
Logo Dallas Semiconducotr 





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DS4404 fiche technique
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Rev 0; 4/06
Two/Four-Channel, I2C Adjustable Current DAC
General Description
The DS4402 and DS4404 contain two and four I2C*
adjustable current DACs, respectively, that are each
capable of sinking or sourcing current. Each output has
31 sink and 31 source settings that are programmed by
the I2C interface. External resistors set the full-scale
range and step size of each output.
Applications
Power-Supply Adjustment
Power-Supply Margining
Adjustable Current Sink or Source
Pin Configuration
TOP VIEW
SDA 1
SCL 2
GND
FS3
(N.C.)
FS2
(N.C.)
FS1
3
4
5
6
FS0 7
DS4404/
DS4402
14
OUT3
(N.C.)
13 VCC
12
OUT2
(N.C.)
11 A1
10 OUT1
9 A0
8 OUT0
TDFN
(3mm x 3mm x 0.8mm)
( ) INDICATES FOR DS4402 ONLY.
Features
o Two (DS4402) or Four (DS4404) Current DACs
o Full-Scale Range for Each DAC Determined by
External Resistors
o 31 Settings Each for Sink and Source Modes
o I2C-Compatible Serial Interface
o Two Three-Level Address Pins Allow Nine
Devices on Same I2C Bus
o Low Cost
o Small Package (14-Pin TDFN)
o -40°C to +85°C Temperature Range
o 1.7V to 5.5V Operation
Ordering Information
PART
TEMP RANGE
DS4402N+
-40°C to +85°C
DS4402N+T&R -40°C to +85°C
DS4404N+
-40°C to +85°C
DS4404N+T&R -40°C to +85°C
+Denotes lead-free package.
T&R denotes tape-and-reel package.
PIN-PACKAGE
14 TDFN (3mm x 3mm)
14 TDFN (3mm x 3mm)
14 TDFN (3mm x 3mm)
14 TDFN (3mm x 3mm)
Typical Operating Circuit
4.7k
4.7k
SDA
SCL
A1
A0
GND
VCC
DS4402 OUT0
OUT1
VCC VOUT0
OUT
DC/DC
CONVERTER
FB
R0A
R0B
VOUT1
OUT
DC/DC
CONVERTER
FB
R1A
R1B
FS0 FS1
RFS0 RFS1
*Purchase of I2C components from Maxim Integrated Products, Inc., or one of its sublicensed Associated Companies, conveys a
license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C
Standard Specification as defined by Philips.
______________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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