DS4402N+TR MAXIM [Maxim Integrated Products], DS4402N+TR Datasheet

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DS4402N+TR

Manufacturer Part Number
DS4402N+TR
Description
Two/Four-Channel, I2C Adjustable Current DAC
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
The DS4402 and DS4404 contain two and four I
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 I
range and step size of each output.
Rev 2; 10/08
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.
Two/Four-Channel, I
2
C interface. External resistors set the full-scale
Power-Supply Adjustment
Power-Supply Margining
Adjustable Current Sink or Source
FS3 (N.C.)
FS2 (N.C.)
*EXPOSED PAD
( ) INDICATES FOR DS4402 ONLY.
TOP VIEW
4.7kΩ
GND
SDA
SCL
FS1
FS0
1
2
3
4
5
6
7
(3mm
4.7kΩ
×
TDFN-EP
General Description
3mm
DS4404/
DS4402
SDA
SCL
A1
A0
GND
Pin Configuration
R
FS0
×
0.8mm)
FS0
DS4402
*EP
V
CC
Applications
______________________________________________ Maxim Integrated Products
FS1
14
13
12
11
10
9
8
R
OUT0
OUT1
FS1
OUT3 (N.C.)
V
OUT2 (N.C.)
A1
OUT1
A0
OUT0
CC
2
2
C Adjustable Current DAC
C
CONVERTER
DC/DC
V
CC
♦ Two (DS4402) or Four (DS4404) Current DACs
♦ Full-Scale Range for Each DAC Determined by
♦ 31 Settings Each for Sink and Source Modes
♦ I
♦ Two Three-Level Address Pins Allow Nine
♦ Low Cost
♦ Small Package (14-Pin TDFN)
♦ -40°C to +85°C Temperature Range
♦ 2.7V to 5.5V Operation
+ Denotes a lead-free/RoHS-compliant package.
T&R = Tape and reel.
* EP = Exposed pad.
DS4402N+
DS4402N+T&R
DS4404N+
DS4404N+T&R
External Resistors
Devices on Same I
2
C-Compatible Serial Interface
PART
FB
OUT
V
OUT0
R
R
0A
0B
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
2
C Bus
CONVERTER
DC/DC
OUT
FB
V
OUT1
PIN-PACKAGE
14 TDFN-EP*
14 TDFN-EP*
14 TDFN-EP*
14 TDFN-EP*
R
R
Features
1A
1B
1

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DS4402N+TR Summary of contents

Page 1

Rev 2; 10/08 Two/Four-Channel, I General Description The DS4402 and DS4404 contain two and four I adjustable current DACs, respectively, that are each capable of sinking or sourcing current. Each output has 31 sink and 31 source settings that are ...

Page 2

Two/Four-Channel, I ABSOLUTE MAXIMUM RATINGS Voltage Range SDA, and SCL CC Relative to Ground.............................................-0.5V to +6.0V Voltage Range on A0, A1, FS0, FS1, FS2, FS3, OUT0, OUT1, OUT2, and OUT3 Relative to Ground ................-0. ...

Page 3

Two/Four-Channel, I OUTPUT CURRENT CHARACTERISTICS (continued +2.7V to +5.5V -40°C to +85°C.) CC PARAMETER Output-Current Power-Supply Rejection Ratio Output Leakage Current at Zero Current Setting Output-Current Differential Linearity Output-Current Integral Linearity ...

Page 4

Two/Four-Channel, I PIN NAME DS4404 DS4402 1 1 SDA 2 2 SCL 3 3 GND 4 — FS3 5 — FS2 6 6 FS1 7 7 FS0 8 8 OUT0 10 10 OUT1 12 — OUT2 14 — OUT3 9, ...

Page 5

Two/Four-Channel, I Detailed Description The DS4402/DS4404 contain two/four I current sources (Figure 1) that are each capable of sinking and sourcing current. Each output has 31 sink and 31 source settings that are programmed through 2 the I C interface. ...

Page 6

Two/Four-Channel, I Memory Organization To control the DS4402/DS4404’s current sources, write to the memory addresses listed in Table 2. Table 2. Memory Addresses MEMORY ADDRESS CURRENT SOURCE (HEXADECIMAL) F8h F9h FAh* FBh* *Only for DS4404. The format of each output ...

Page 7

Two/Four-Channel, I Acknowledgement (ACK and NACK): An Acknowledge- ment (ACK) or Not Acknowledge (NACK) is always the ninth bit transmitted during a byte transfer. The device receiving data (the master during a read or the slave during a write operation) ...

Page 8

Two/Four-Channel, I Applications Information Example Calculations for an Adjustable Power Supply Using the typical circuit, assuming a typical output volt- age of 2.0V, a feedback voltage of 0.8V 500Ω, and R2 = 333Ω, to adjust or margin the ...

Page 9

Two/Four-Channel, I REVISION REVISION NUMBER DATE 0 4/06 Initial release. 1 8/06 In the Features, corrected the operating range from 1.7V to 5.5V to 2.7V to 5.5V. Added the I/O capacitance (C 2 10/08 table. Maxim cannot assume responsibility for ...

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