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Maxim Integrated Semiconductor Electronic Components Datasheet

DS3503 Datasheet

Stepper Potentiometer

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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
GND
VCC
SYNC
Y
1
2
3
4
5
DS3503
μSOP
10 SCL
9 V+
8 RL
7 RW
6 RH
SCL
SDA
V+
VCC
GND
SYNC
SCL
OUT
SDA
I2C
LOGIC
I2C WR BUS
IVR
EEPROM
ADDRESS
I2C RD BUS
STEP CONTROL
REGISTER
PERIOD (2 BITS)
STEP COUNT (2 BITS)
MUX I
O
WR
REGISTER
ADDRESS
COUNT
STEP
COUNTER
AND
CONTROL
LOGIC
CODE 64
(40h)
DS3503
RH
7-BIT
POT
RL
RH
7-BIT
POT
RL
Functional Diagram
WR+STEPCOUNT
1 LSB
RW
WR
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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Maxim Integrated Semiconductor Electronic Components Datasheet

DS3503 Datasheet

Stepper Potentiometer

No Preview Available !

NV, I2C, Stepper Potentiometer
ABSOLUTE MAXIMUM RATINGS
Voltage Range on VCC Relative to GND ...............-0.5V to +6.0V
Voltage Range on V+ Relative to GND ..................-0.5V to +17V
Voltage Range on SDA, SCL, and SYNC
Relative to VCC........-0.5V to (VCC + 0.5V), not to exceed 6.0V
Voltage Range on RH, RL, RW, and Y .......................-0.5V to V+
Voltage Range Across RH and RL .............................-0.5V to V+
Operating Temperature Range .........................-40°C to +100°C
Programming Temperature Range .........................0°C to +70°C
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature...........................Refer to the IPC/JEDEC
J-STD-020 Specification.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
(TA = -40°C to +100°C)
PARAMETER
VCC Supply Voltage
V+ Voltage
Input Logic 0
(SCL, SDA, SYNC)
SYMBOL
VCC
CONDITIONS
(Note 1)
V+ > VCC (Note 1)
VIL (Note 1)
Input Logic 1
(SCL, SDA, SYNC)
VIH (Note 1)
Switch Current (All Switches)
Resistor Current
SYNC Frequency
ISW
IRES
fSYNC
MIN
+2.7
+4.5
-0.3
0.7 x
VCC
TYP
MAX
+3.6
+15.5
0.3 x
VCC
VCC
+ 0.3
3
3
1
UNITS
V
V
V
V
mA
mA
MHz
ELECTRICAL CHARACTERISTICS
(VCC = +2.7V to +3.6V, TA = -40°C to +100°C, unless otherwise noted.)
PARAMETER
VCC Standby Current
VCC Supply Current
(NV Read or Write)
SYMBOL
CONDITIONS
ISTBY VCC = +3.6V, I2C inactive (Note 2)
ICC fSCL = 400kHz (Note 3)
MIN TYP MAX UNITS
10 μA
3 mA
V+ Bias Current
Input Leakage (SDA, SCL, SYNC)
Low-Level Output Voltage (SDA)
DCP Wiper Response Time
I/O Capacitance
Power-Up Recall Voltage
IV+
IL
VOL
tDCP
CI/O
VPOR
3mA sink current
Min VCC when NV memory is recalled
(Note 4)
+1 μA
-1 +1 μA
0 0.4 V
1 μs
5 10 pF
1.2 2.6 V
Power-Up Memory Recall Delay
Wiper Resistance
End-to-End Resistance (RH to RL)
RTOTAL Tolerance
CH, CL, CW Capacitance
tD
RW
RTOTAL
CPOT
VCC > VPOR to initial memory recall done
(Note 5)
V+ = 15.0V
-20
3 ms
5000

5 k
+20 %
10 pF
2 _______________________________________________________________________________________
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Part Number DS3503
Description Stepper Potentiometer
Maker Maxim
PDF Download

DS3503 Datasheet PDF






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