參數(shù)資料
型號： DS4426T+T&R
廠商： Maxim Integrated Products
文件頁數(shù)： 1/15頁
文件大?。?/td> 0K
描述： IC DAC I2C-MARGINING 4CH 28-TQFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
位數(shù)： 8
數(shù)據(jù)接口： I²C
轉(zhuǎn)換器數(shù)目： 4
電壓電源： 單電源
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 28-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 28-TQFN-EP（4x4）
包裝： 帶卷 (TR)
輸出數(shù)目和類型： 4 電流，單極
采樣率（每秒）： *
General Description
The DS4426 contains four I2C-adjustable current DACs
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 I2C interface. Power-supply tracking
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 I2C bus.
Applications
Power-Supply Adjustment
Power-Supply Margining
Power-Supply Tracking
Adjustable Current Sink or Source
Features
Four Current DACs
50A to 200A 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
Industrial Temperature Range: -40°C to +85°C
DS4426
Quad-Channel, I2C-Margining IDACs with
Three Channels of Power-Supply Tracking
________________________________________________________________
Maxim Integrated Products
1
26
27
25
24
10
9
11
SCL
OUT0
OUT1
OUT2
OUT3
12
SDA
THR1
DNC
THR3
FS0
INN3
INP3
12
GAIN3
45
6
7
20
21
19
17
16
15
GAIN2
GAIN1
INN1
INP1
A1
A0
V
CC
THR2
3
18
28
8
N.C.
GND
FS3
23
13
INP2
FS2
22
14
INN2
FS1
THIN QFN
(4mm
× 4mm)
TOP VIEW
DS4426
*EP
*EXPOSED PAD.
+
Pin Configuration
Ordering Information
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.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
*
EP = Exposed pad.
PART
TEMP RANGE
PIN-PACKAGE
DS4426T+
-40°C to +85°C
28 TQFN-EP*
DS4426T+T&R
-40°C to +85°C
28 TQFN-EP*
Functional Diagram appears at end of data sheet.
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