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DS3501U+

P1-P3P4-P6P7-P9P10-P12P13-P14
General Description
The DS3501 is a 7-bit, nonvolatile (NV) digital poten-
tiometer featuring an output voltage range of up to 15.5V.
Programming is accomplished by an I
2
C-compatible
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.
The DS3501 contains an on-chip temperature sensor
and associated analog-to-digital converter (ADC). The
ADC output addresses a 36-byte NV lookup table
(LUT). The LUT output can drive the pot directly or be
added to an NV initial-value register (IVR) to drive the
pot. This flexible LUT-based architecture allows the
DS3501 to provide a temperature-compensated poten-
tiometer output with arbitrary slope.
Applications
TFT-LCD V
COM
Calibration
Linear and Nonlinear Compensation
Instrumentation and Industrial Controls
Mechanical POT Replacement
Optical Transceivers
Features
♦ 128 Wiper Tap Points
♦ Full-Scale Resistance: 10kΩ
♦ On-Chip Temperature Sensor and ADC
♦ 36-Byte Lookup Table (LUT)
♦ I
2
C-Compatible Serial Interface
♦ Address Pins Allow Up to Four DS3501s to Share
the Same I
2
C Bus
♦ Digital Operating Voltage: 2.7V to 5.5V
♦ Analog Operating Voltage: 4.5V to 15.5V
♦ Operating Temperature: -40°C to +100°C
♦ Pin and Software Compatible with ISL95311
(Default Mode)
♦ 10-Pin μSOP Package
DS3501
High-Voltage, NV, I
2
C POT with Temp Sensor
and Lookup Table
______________________________________________
Maxim Integrated Products
1
Rev 0; 1/07
+
Denotes a lead-free package.
T&R denotes tape-and-reel.
Ordering Information
PART TEMP RANGE PIN-PACKAGE
DS3501U+ -40°C to +100°C 10 µSOP
DS3501U+T&R -40°C to +100°C 10 µSOP
VOLATILE
WIPER REGISTER
NV IVR
36-BYTE
LUT
NV
MEMORY
CONTROL
CIRCUITRY
AND ADDRESS
DECODE
TEMP
SENSOR
AND ADC
A1
A0
SDA
SCL
∑
DECODER
LEVEL
SHIFTER
127
126
125
2
1
0
RH
RL
RW
DS3501
Functional Diagram
Pin Configuration and Typical Operating Circuit appear at
end of data sheet.
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.
DS3501
High-Voltage, NV, I
2
C POT with Temp Sensor
and Lookup Table
2 _____________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
(T
A
= -40°C to +100°C)
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.
Voltage Range on V
CC
Relative to GND ...............-0.5V to +6.0V
Voltage Range on V+ Relative to GND ..................-0.5V to +17V
Voltage Range on SDA, SCL, A0, A1
Relative to GND..........-0.5V to (V
CC
+ 0.5V), not to exceed 6.0V
Voltage Range on RH, RL, RW...................................-0.5V to V+
Voltage Range Across RH and RL Pins .....................-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 .......................................See IPC/JEDEC
J-STD-020 Specification
Maximum RW Current ...........................................................1mA
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage V
CC
(Note 1) +2.7 +5.5 V
V+ Voltage V+ V+ > V
CC
+4.5 +15.5 V
Input Logic 1
(SCL, SDA, A0, A1)
V
IH
0.7 x
V
CC
V
CC
+ 0.3
V
Input Logic 0
(SCL, SDA, A0, A1)
V
IL
-0.3
0.3 x
V
CC
V
Resistor Inputs (RL, RW, RH) V
RES
-0.3
V+
+ 0.3
V
Wiper Current I
WIPER
1mA
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +100°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
I
CC
(Note 2) 2 mA
V
CC
Supply Current
I
CC2
(Note 3) 250 350 µA
Standby Supply Current I
STBY
(Note 4) 40 60 µA
V+ Bias Current I
V+
+1 µA
Inp ut Leakag e ( S D A, S C L, A0, A1) I
L
-1 +1 µA
Low-Level Output Voltage (SDA) V
OL
3mA sink current 0.0 0.4 V
I/O Capacitance C
I/O
510pF
Power-Up Recall Voltage V
POR
(Note 5) 1.6 2.6 V
Power-Up Memory Recall Delay t
D
(Note 6) 5 ms
Wiper Resistance R
W
V+ = 15.0V 5000 Ω
E nd - to- E nd Resi stance ( RH to RL) R
TOTAL
10 kΩ
R
TOTAL
Tolerance T
A
= +25°C -20 +20 %
R
TOTAL
Temp Co. (Note 7) ±200 ppm
CH, CL, CW Capacitance C
POT
10 pF
DS3501
High-Voltage, NV, I
2
C POT with Temp Sensor
and Lookup Table
_____________________________________________________________________ 3
ANALOG VOLTAGE MONITORING CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +100°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Resolution LSB Full-scale voltage of 6.5536V 25.6 mV
Input/Supply Accuracy A
CC
At factory setting 0.25 1
% FS
(Full
Scale)
Input Supply Offset V
OS
(Note 7) 0 5 LSB
Update Rate (Temperature and
Supply Conversion Time)
t
FRAME
16 ms
TEMPERATURE SENSOR CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +100°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Temperature Error ±5 °C
Update Rate (Temperature and
Supply Conversion Time)
t
FRAME
16 ms
VOLTAGE-DIVIDER CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +100°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Integral Nonlinearity INL (Note 8) -1 +1 LSB
Differential Nonlinearity DNL (Note 9) -0.5 +0.5 LSB
Zero-Scale Error ZS
ERROR
V+ = 4.5V
(Note 10)
0 0.5 2 LSB
Full-Scale Error FS
ERROR
V+ = 4.5V
(Note 11)
-2 -0.003 0 LSB
Ratiometric Temp Coefficient TCV WR set to 40h ±4 ppm/°C
I
2
C AC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +100°C, timing referenced to V
IL(MAX)
and V
IH(MIN)
. See Figure 3.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SCL Clock Frequency f
SCL
(Note 12) 0 400 kHz
Bus Free Time Between STOP
and START Conditions
t
BUF
1.3 µs
Hold Time (Repeated) START
Condition
t
HD:STA
0.6 µs
Low Period of SCL t
LOW
1.3 µs
High Period of SCL t
HIGH
0.6 µs
P1-P3P4-P6P7-P9P10-P12P13-P14

DS3501U+

Mfr. #:
Buy DS3501U+
Manufacturer:
Maxim Integrated
Description:
Digital Potentiometer ICs High-Voltage NV I2C w/Temp Sensor & LUT
Lifecycle:
New from this manufacturer.
Delivery:
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