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DS3503UT データシートの表示(PDF) - Maxim Integrated

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DS3503UT
MaximIC
Maxim Integrated MaximIC
DS3503UT Datasheet PDF : 13 Pages
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Rev 1; 3/09
NV, I2C, Stepper Potentiometer
General Description
The DS3503 features two synchronized stepping digital
potentiometers: one 7-bit potentiometer with RW as its
output, and another potentiometer with Y as its output.
Both potentiometers reference the RH and RL terminals
and feature an output voltage range of up to 15.5V. In
addition, both potentiometer outputs can be stepped
up and down by configuring the control registers.
Programming is accomplished by an I2C-compatible
interface that can operate at speeds of up to 400kHz.
Applications
TFT-LCD VCOM Calibration
Instrumentation and Industrial Controls
Mechanical Potentiometer Replacement
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
DS3503U+
-40°C to +100°C
10 μSOP
DS3503U+T&R
-40°C to +100°C
10 μSOP
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
Typical Operating Circuit appears at end of data sheet.
Features
128 Wiper Tap Points
Full-Scale Resistance: 5kΩ
Programmable Logic Lets WR Step Up and Down
with Timing Controlled by SYNC Input
Second Potentiometer Output Pin (Y) Centered at
Position 40h
I2C-Compatible Serial Interface
Digital Operating Voltage: 2.7V to 3.6V
Analog Operating Voltage: 4.5V to 15.5V
Operating Temperature: -40°C to +100°C
10-Pin µSOP Package
Pin Configuration
TOP VIEW
SDA 1
GND 2
VCC 3
SYNC 4
Y5
DS3503
μSOP
10 SCL
9 V+
8 RL
7 RW
6 RH
SCL
SDA
V+
VCC
GND
SYNC
RH
I2C WR BUS
SCL
OUT
SDA
IVR
EEPROM
ADDRESS
MUX
I
O
WR
REGISTER
7-BIT
POT
I2C
LOGIC
I2C RD BUS
ADDRESS
RL
RH
COUNT
STEP CONTROL
REGISTER
CODE 64
7-BIT
STEP
(40h)
POT
PERIOD (2 BITS)
COUNTER
AND
STEP COUNT (2 BITS)
CONTROL
LOGIC
DS3503
RL
Functional Diagram
WR+STEPCOUNT
1 LSB
WR
RW
PERIOD
WR-STEPCOUNT
CODE 64 (40h) + STEPCOUNT
1 LSB
Y
CODE 64
(40h)
PERIOD
CODE 64 (40h) - STEPCOUNT
________________________________________________________________ Maxim Integrated Products 1
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.

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