DS3502 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – High-Voltage, NV, I2C POT

Rev 0; 1/08
High-Voltage, NV, I²C POT
General Description
The DS3502 is a 7-bit, nonvolatile (NV) digital poten-
tiometer (POT) featuring an output voltage range of up to
15.5V. Programming is accomplished by an I²C-compat-
ible interface, which can operate at speeds of up to
400kHz. External voltages are applied at the RL and RH
inputs to define the lowest and highest potentiometer
outputs.
Applications
TFT-LCD VCOM Calibration
Instrumentation and Industrial Controls
Mechanical POT Replacement
Pin Configuration and Typical Operating Circuit appear at
end of data sheet.
Features
♦ 128 Wiper Tap Points
♦ Full-Scale Resistance: 10kΩ
♦ I²C-Compatible Serial Interface
♦ Address Pins Allow Up to Four DS3502s to Share
the Same I²C Bus
♦ Digital Operating Voltage: 2.5V to 5.5V
♦ Analog Operating Voltage: 4.5V to 15.5V
♦ Operating Temperature: -40°C to +100°C
♦ 10-Pin µSOP Package
Ordering Information
PART
TEMP RANGE
DS3502U+
-40°C to +100°C
DS3502U+T&R
-40°C to +100°C
+Denotes a lead-free package.
T&R = Tape and reel.
PIN-PACKAGE
10 μSOP
10 μSOP
Functional Diagram
RH
127
SDA
7-BIT
SCL
WIPER REGISTER
126
DS3502
7-BIT
NONVOLATILE MEMORY
125
DECODER
LEVEL SHIFTER
2
1
0
CONTROL CIRCUITRY
AND
A1
ADDRESS DECODE
RL
A0
RW
________________________________________________________________ Maxim Integrated Products 1
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or visit Maxim’s website at www.maxim-ic.com.