MAX5393 MAXIM [Maxim Integrated Products], MAX5393 Datasheet

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MAX5393

Manufacturer Part Number
MAX5393
Description
Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

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19-5035; Rev 0; 10/09
The MAX5391/MAX5393 dual 256-tap, volatile, low-
voltage linear taper digital potentiometers offer three
end-to-end resistance values of 10kI, 50kI, and 100kI.
Operating from a single +1.7V to +5.5V power sup-
ply, these devices provide a low 35ppm/NC end-to-end
temperature coefficient. The devices feature an SPIK
interface.
The small package size, low supply voltage, low sup-
ply current, and automotive temperature range of the
MAX5391/MAX5393 make the devices uniquely suitable
for the portable consumer market, battery backup indus-
trial applications, and the automotive market.
The MAX5391/MAX5393 include two digital potentio-
meters in a voltage-divider configuration. The MAX5391/
MAX5393 are specified over the -40NC to +125NC auto-
motive temperature range and are available in a 16-pin,
3mm x 3mm TQFN and a 14-pin TSSOP package,
respectively.
SPI is a trademark of Motorola, Inc.
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.
Low-Voltage Battery Applications
Portable Electronics
Mechanical Potentiometer Replacement
Offset and Gain Control
Adjustable Voltage References/Linear Regulators
Automotive Electronics
_______________________________________________________________ Maxim Integrated Products 1
General Description
Linear Taper Digital Potentiometers
Dual 256-Tap, Volatile, Low-Voltage
Applications
S
S
S
S
S
S
S
Note: All devices are specified in the -40NC to +125NC tem-
perature range.
+Denotes a lead(Pb)-free/RoHS-compliant package
*EP = Exposed pad.
MAX5393MAUD+
MAX5393LAUD+
MAX5393NAUD+
MAX5391MATE+
MAX5391LATE+
MAX5391NATE+
SCLK
Dual 256-Tap Linear Taper Positions
Single +1.7V to +5.5V Supply Operation
Low 12µA Quiescent Supply Current
10kI, 50kI, and 100kI End-to-End Resistance
Values
SPI-Compatible Interface
Wiper Set to Midscale on Power-Up
-40NC to +125NC Operating Temperature Range
DIN
CS
PART
CHARGE
PUMP
V
SPI
DD
BYP
PIN-PACKAGE
LATCH
LATCH
Ordering Information
POR
16 TQFN-EP*
16 TQFN-EP*
16 TQFN-EP*
14 TSSOP
14 TSSOP
14 TSSOP
Functional Diagram
HA
GND
256 DECODER
256 DECODER
MAX5391
MAX5393
WA
RESISTANCE (kI)
END-TO-END
Features
100
100
LA
10
50
10
50
HB
WB
LB

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MAX5393 Summary of contents

Page 1

... The MAX5391/MAX5393 include two digital potentio- meters in a voltage-divider configuration. The MAX5391/ MAX5393 are specified over the -40NC to +125NC auto- motive temperature range and are available in a 16-pin, 3mm x 3mm TQFN and a 14-pin TSSOP package, respectively ...

Page 2

... H_, W_ GND ......................................-0.3V to the lower of All Other Pins to GND .............................................-0.3V to +6V Continuous Current into H_, W_, and L_ MAX5391L/MAX5393L ................................................... Q5mA MAX5391M/MAX5393M ................................................. Q2mA MAX5391N/MAX5393N ................................................. Q1mA 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 ...

Page 3

Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers ELECTRICAL CHARACTERISTICS (continued +1.7V to +5.5V +25NC.) (Note 1) A PARAMETER SYMBOL Charge-Pump Feedthrough at W_ POWER SUPPLIES Supply ...

Page 4

Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers Figure 1. Voltage-Divider and Variable Resistor Configurations (V = 1.8V +25NC, unless otherwise noted SUPPLY CURRENT vs. TEMPERATURE 2.6V ...

Page 5

Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers (V = 1.8V +25NC, unless otherwise noted WIPER RESISTANCE vs. WIPER VOLTAGE 140 120 100 1. 2.6V DD ...

Page 6

Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers (V = 1.8V +25NC, unless otherwise noted VOLTAGE-DIVIDER DNL vs. TAP POSITION (50kI) 0.10 0.08 0.06 0.04 0.02 0 -0.02 -0.04 -0.06 -0.08 -0. 102 153 ...

Page 7

Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers (V = 1.8V +25NC, unless otherwise noted MIDSCALE FREQUENCY RESPONSE (10kI - 1. P-P ...

Page 8

... Resistor A Low Terminal. The voltage at LA can be higher or lower than the voltage at HA. Current can flow into or out of LA. Exposed Pad (MAX5391 Only). Connect to GND. Pin Configurations TOP VIEW + GND MAX5393 I. N.C. BYP 6 9 SCLK DIN ...

Page 9

... Drive CS low to load data from DIN synchronously into the serial shift register on the rising edge of each SCLK pulse. The MAX5391/MAX5393 load the last 10 bits of clocked data into the appropriate potentiometer control register once CS transitions high. See Figures 2 and 3. Data written to a memory register immediately updates the wiper position ...

Page 10

Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers CSO CSS SCLK DS DIN Figure 3. SPI Timing Diagram REG A: The data byte writes to register A, and the wiper of potentiometer A moves ...

Page 11

Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers Figure 4. Variable-Gain Noninverting Amplifier OUT1 OUT2 H_ H_ MAX8866 SET1 SET2 Figure 6. Adjustable Dual Linear Regulator ______________________________________________________________________________________ V OUT Figure ...

Page 12

Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers Variable-Gain Current-to-Voltage Converter Figure 8 shows a variable-gain current-to-voltage con- verter using a potentiometer as a variable resistor. LCD Bias Control Figure 9 shows a positive LCD bias control circuit using a ...

Page 13

Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a ...

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