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Maxim Integrated Semiconductor Electronic Components Datasheet

DS3501 Datasheet

I2C POT

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Rev 0; 1/07
High-Voltage, NV, I2C POT with Temp Sensor
and Lookup Table
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 I2C-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-word 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 VCOM Calibration
Linear and Nonlinear Compensation
Instrumentation and Industrial Controls
Mechanical POT Replacement
Optical Transceivers
Pin Configuration and Typical Operating Circuit appear at
end of data sheet.
Features
128 Wiper Tap Points
Full-Scale Resistance: 10kΩ
On-Chip Temperature Sensor and ADC
36-Byte Lookup Table (LUT)
I2C-Compatible Serial Interface
Address Pins Allow Up to Four DS3501s to Share
the Same I2C 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
Ordering Information
PART
TEMP RANGE
DS3501U+
-40°C to +100°C
DS3501U+T&R
-40°C to +100°C
+Denotes a lead-free package.
T&R denotes tape-and-reel.
PIN-PACKAGE
10 µSOP
10 µSOP
Functional Diagram
RH
SDA VOLATILE
SCL WIPER REGISTER
127
126
DS3501
NV IVR
36-BYTE
LUT
NV
MEMORY
125
DECODER
LEVEL
SHIFTER
2
1
CONTROL
CIRCUITRY
A1 AND ADDRESS
A0 DECODE
0
TEMP
SENSOR
AND ADC
RL
RW
______________________________________________ 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.
Free Datasheet http://www.datasheet4u.com/


Maxim Integrated Semiconductor Electronic Components Datasheet

DS3501 Datasheet

I2C POT

No Preview Available !

High-Voltage, NV, I2C POT with Temp Sensor
and Lookup Table
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, A0, A1
Relative to GND..........-0.5V to (VCC + 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
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
Supply Voltage
V+ Voltage
Input Logic 1
(SCL, SDA, A0, A1)
SYMBOL
VCC
V+
(Note 1)
V+ > VCC
VIH
CONDITIONS
Input Logic 0
(SCL, SDA, A0, A1)
VIL
Resistor Inputs (RL, RW, RH)
Wiper Current
VRES
IWIPER
MIN
+2.7
+4.5
0.7 x
VCC
-0.3
-0.3
TYP
MAX
+5.5
+15.5
VCC
+ 0.3
0.3 x
VCC
V+
+ 0.3
1
UNITS
V
V
V
V
V
mA
DC ELECTRICAL CHARACTERISTICS
(VCC = +2.7V to +5.5V, TA = -40°C to +100°C, unless otherwise noted.)
PARAMETER
VCC Supply Current
Standby Supply Current
V+ Bias Current
Input Leakage (SDA, SCL, A0, A1)
Low-Level Output Voltage (SDA)
I/O Capacitance
Power-Up Recall Voltage
Power-Up Memory Recall Delay
Wiper Resistance
End-to-End Resistance (RH to RL)
RTOTAL Tolerance
RTOTAL Temp Co.
CH, CL, CW Capacitance
SYMBOL
ICC
ICC2
ISTBY
IV+
IL
VOL
CI/O
VPOR
tD
RW
RTOTAL
CPOT
(Note 2)
(Note 3)
(Note 4)
CONDITIONS
3mA sink current
(Note 5)
(Note 6)
V+ = 15.0V
TA = +25°C
(Note 7)
MIN TYP MAX UNITS
2 mA
250 350
µA
40 60
µA
+1 µA
-1 +1 µA
0.0 0.4 V
5 10 pF
1.6 2.6 V
5 ms
5000
Ω
10 kΩ
-20 +20 %
±200
ppm
10 pF
2 _____________________________________________________________________
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Part Number DS3501
Description I2C POT
Maker Maxim
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DS3501 Datasheet PDF






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