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PDF DS4302U-019 Datasheet ( Hoja de datos )

Número de pieza DS4302U-019
Descripción 2-Wire/ 5-Bit DAC with Three Digital Outputs
Fabricantes Maxim Integrated Products 
Logotipo Maxim Integrated Products Logotipo

Total 8 Páginas
		
DS4302U-019 Hoja de datos, Descripción, Manual
Rev 1; 6/04
2-Wire, 5-Bit DAC with Three Digital Outputs
General Description
The DS4302 is a 5-bit digital-to-analog converter (DAC)
with three programmable digital outputs. The DS4302
communicates through a 2-wire, SMBus™-compatible,
serial interface. The tiny 8-pin µSOP package is ideal
for use in space-constrained applications.
Features
SO Package is a Drop-In Replacement for the
MPS1251 and MPS1252
Single 5-Bit DAC (32 Steps)
0V to 2V and 0V to 1.9V Versions
Three Programmable Digital Outputs
SMBus-Compatible Serial Interface
4.5V to 5.5V Supply Voltage Range
8-Pin SO and 8-Pin µSOP Packages
Industrial Temperature Range: -40°C to +85°C
Applications
CCFL Backlight Brightness Control
Power-Supply Calibration
Ordering Information
PART
VOUT
RANGE
TOP
BRAND
DS4302Z-020
DS4302Z-019*
DS4302U-020
DS4302U-019*
0V to 2.0V
0V to 1.9V
0V to 2.0V
0V to 1.9V
4302B
4302A
4302B
4302A
Add “/T&R” for tape-and-reel orders.
*Contact factory for availability.
PIN-
PACKAGE
8 SO
8 SO
8 µSOP
8 µSOP
Pin Description
PIN NAME
FUNCTION
1 SCL Serial Clock Input. 2-wire clock input.
2
SDA
Serial Data Input/Output. Bidirectional,
2-wire data pin.
3 VOUT DAC Output Voltage
4 GND Ground
5 P2
6 P1 Programmable Digital Output
7 P0
8 VCC Power-Supply Input
SMBus is a trademark of Intel Corp.
Pin Configuration
TOP VIEW
SCL 1
SDA 2
VOUT 3
GND 4
DS4302
8 VCC
7 P0
6 P1
5 P2
SO/µSOP
______________________________________________ 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.

1 page

DS4302U-019 pdf
2-Wire, 5-Bit DAC with Three Digital Outputs
Functional Diagram
DATA BYTE REGISTER
SDA
2-WIRE
INTERFACE
MSB DAC VALUE P2 P1 P0 LSB
SCL
VOUT
VCC
GND
VCC
BUFFER
5-BIT
DAC
DS4302
BANDGAP
REFERENCE
OUTPUT CELL
VCC
P0
OUTPUT CELL
OUTPUT CELL
P1
P2
_____________________________________________________________________ 5

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