MAX5481EUD Maxim Integrated Products, MAX5481EUD Datasheet

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MAX5481EUD

Manufacturer Part Number
MAX5481EUD
Description
Digital Potentiometer ICs
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5481EUD.pdf (20 pages)

Specifications of MAX5481EUD

Number Of Pots
Single
Taps Per Pot
1024
Resistance
10 KOhms
Wiper Memory
Non Volatile
Digital Interface
Serial (3-Wire, SPI)
Operating Supply Voltage
5 V
Supply Current
1 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Supply Voltage (max)
5.25 V
Supply Voltage (min)
2.7 V
Package / Case
TSSOP-14
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Meier Automation Equipment Co., Limited Meier Automation Equipment Co., Limited
Part Number:
MAX5481EUD
Manufacturer:
MAXIM/美信
Quantity:
20 000
The MAX5481–MAX5484 10-bit (1024-tap) nonvolatile,
linear-taper, programmable voltage-dividers and vari-
able resistors perform the function of a mechanical
potentiometer, but replace the mechanics with a pin-
configurable 3-wire serial SPI™-compatible interface or
up/down digital interface. The MAX5481/MAX5482 are
3-terminal voltage-dividers and the MAX5483/MAX5484
are 2-terminal variable resistors.
The MAX5481–MAX5484 feature an internal, non-
volatile, electrically erasable programmable read-only
memory (EEPROM) that stores the wiper position for ini-
tialization during power-up. The 3-wire SPI-compatible
serial interface allows communication at data rates up
to 7MHz. A pin-selectable up/down digital interface is
also available.
The MAX5481–MAX5484 are ideal for applications
requiring digitally controlled potentiometers. Two end-to-
end resistance values are available (10kΩ and 50kΩ) in a
voltage-divider or a variable-resistor configuration (see
the Selector Guide ). The nominal resistor temperature
coefficient is 35ppm/°C end-to-end, and only 5ppm/°C
ratiometric, making these devices ideal for applications
requiring low-temperature-coefficient voltage-dividers,
such as low-drift, programmable gain-amplifiers.
The MAX5481–MAX5484 operate with either a +2.7V to
+5.25V single power supply or ±2.5V dual power sup-
plies. These devices consume 400µA (max) of supply
current when writing data to the nonvolatile memory
and 1.0µA (max) of standby supply current. The
MAX5481–MAX5484 are available in a space-saving
(3mm x 3mm), 16-pin TQFN, or a 14-pin TSSOP pack-
age and are specified over the extended (-40°C to
+85°C) temperature range.
Gain and Offset
Adjustment
LCD Contrast Adjustment
Pressure Sensors
19-3708; Rev 5; 4/10
Note: All devices are specified over the -40°C to +85°C operating
temperature range.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
Ordering Information continued 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.
MAX5481ETE+
MAX5481EUD+
PART
________________________________________________________________ Maxim Integrated Products
PIN-PACKAGE
16 TQFN-EP*
14 TSSOP
10-Bit, Nonvolatile, Linear-Taper Digital
Ordering Information
General Description
Low-Drift Programmable
Gain Amplifiers
Mechanical Potentiometer
Replacement
Applications
TOP MARK
ACP
—
♦ 1024 Tap Positions
♦ Power-On Recall of Wiper Position from
♦ 16-Pin (3mm x 3mm x 0.8mm) TQFN or 14-Pin
♦ 35ppm/°C End-to-End Resistance Temperature
♦ 5ppm/°C Ratiometric Temperature Coefficient
♦ 10kΩ and 50kΩ End-to-End Resistor Values
♦ Pin-Selectable SPI-Compatible Serial Interface or
♦ 1µA (max) Standby Current
♦ Single +2.7V to +5.25V Supply Operation
♦ Dual ±2.5V Supply Operation
Selector Guide appears at end of data sheet.
SPI is a trademark of Motorola, Inc.
Pin Configurations continued at end of data sheet.
Nonvolatile Memory
TSSOP Package
Coefficient
Up/Down Digital Interface
TOP VIEW
*SEE FUNCTIONAL DIAGRAM
**CONNECT EXPOSED PAD TO V
*CONNECT EXPOSED PAD TO V
GND
GND
N.C.
N.C.
V
V
V
V
DD
DD
SS
SS
13
14
15
16
13
14
15
16
+
+
Potentiometers
12
12
1
1
INTERFACE
INTERFACE
11
11
TQFN
TQFN
2
2
SS
Pin Configurations
SS
MAX5481*
MAX5482*
10
10
MAX5483
MAX5484
3
3
9
4
9
4
**EP
*EP
8
7
6
5
8
7
6
5
V
N.C.
N.C.
N.C.
V
N.C.
N.C.
N.C.
SS
SS
Features
1

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MAX5481EUD Summary of contents

Page 1

... Mechanical Potentiometer Replacement Pressure Sensors Ordering Information PART PIN-PACKAGE MAX5481ETE+ 16 TQFN-EP* MAX5481EUD+ 14 TSSOP Note: All devices are specified over the -40°C to +85°C operating temperature range. + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. Ordering Information continued at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642, or visit Maxim’ ...

Page 2

Nonvolatile, Linear-Taper Digital Potentiometers ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6. GND............................................................-3.5V to +0. .............................................................-0.3V to +6. ..................................( CS, SCLK(INC), DIN(U/D), ...

Page 3

Nonvolatile, Linear-Taper Digital ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.25V 0V, V GND +5.0V +25°C, unless otherwise noted.) (Note PARAMETER SYMBOL Full-Scale Wiper-to-End Resistance Zero-Scale ...

Page 4

Nonvolatile, Linear-Taper Digital Potentiometers TIMING CHARACTERISTICS (V = +2.7V to +5.25V 0V, V GND +5.0V +25°C, unless otherwise noted.) (Note PARAMETER SYMBOL ANALOG SECTION Wiper Settling ...

Page 5

Nonvolatile, Linear-Taper Digital (V = 5.0V 0V +25°C, unless otherwise noted DNL vs. CODE (MAX5483) 1 2.7V DD 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 0 128 ...

Page 6

Nonvolatile, Linear-Taper Digital Potentiometers (V = 5.0V 0V +25°C, unless otherwise noted DNL vs. CODE (MAX5484) 1 2.7V DD 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 0 ...

Page 7

Nonvolatile, Linear-Taper Digital (V = 5.0V 0V +25°C, unless otherwise noted WIPER RESISTANCE vs. CODE (VARIABLE RESISTOR +25° 128 ...

Page 8

Nonvolatile, Linear-Taper Digital Potentiometers (Circuit of Figure +25°C, unless otherwise noted.) A TAP-TO-TAP SWITCHING TRANSIENT RESPONSE (MAX5481 10pF W FROM CODE 01 1111 1111 TO CODE 10 0000 0000 1μs/div WIPER ...

Page 9

Nonvolatile, Linear-Taper Digital (MAX5481/MAX5482 Voltage-Dividers) PIN NAME TQFN TSSOP 4– N. SPI/ DIN(U/ SCLK(INC) ...

Page 10

Nonvolatile, Linear-Taper Digital Potentiometers (MAX5483/MAX5484 Variable Resistors) PIN NAME TQFN TSSOP 4– N. D.N. SPI/ DIN(U/D) 11 ...

Page 11

Nonvolatile, Linear-Taper Digital V DD 10-BIT GND NV MEMORY SPI SCLK(INC) INTERFACE DIN(U/D) UP/DOWN INTERFACE NOTE: THE MAX5481/MAX5482 ARE NOT INTENDED FOR CURRENT TO FLOW THROUGH THE WIPER (SEE THE MAX5481/MAX5482 PROGRAMMABLE VOLTAGE-DIVIDER SECTION). ______________________________________________________________________________________ Potentiometers ...

Page 12

Nonvolatile, Linear-Taper Digital Potentiometers V DD GND SCLK(INC) INTERFACE DIN(U/D) UP/DOWN INTERFACE Detailed Description The MAX5481/MAX5482 linear programmable voltage- dividers and the MAX5483/MAX5484 variable resistors feature 1024 tap points (10-bit resolution) (see the Functional Diagrams ). ...

Page 13

Nonvolatile, Linear-Taper Digital 128 256 384 512 640 CODE (DECIMAL) 50kΩ DEVICE SCALES BY A FACTOR OF FIVE Figure 1. Resistance from vs. Code (10k ...

Page 14

Nonvolatile, Linear-Taper Digital Potentiometers Table 2. Command Decoding* CLOCK EDGE Bit Name — — C1 Write Wiper Register Copy Wiper Register Register Copy NV Register ...

Page 15

Nonvolatile, Linear-Taper Digital a) 24-BIT COMMAND/DATA WORD CS SCLK(INC DIN(U/D) b) 8-BIT COMMAND WORD CS SCLK(INC DIN(U/D) Figure 4. Serial SPI-Compatible Interface Format CS 1 ...

Page 16

Nonvolatile, Linear-Taper Digital Potentiometers Table 3. Truth Table CS DIN(U/D) SCLK(INC) ↓ ↓ ↑ ↓ ↑ ↑ ↑ = Low-to-high transition. ↓ = High-to-low ...

Page 17

Nonvolatile, Linear-Taper Digital The MAX5481–MAX5484 feature a low-power standby mode. When the device is not being programmed, it enters into standby mode and supply current drops to 0.5µA (typ). Nonvolatile Memory The internal EEPROM consists of a nonvolatile register ...

Page 18

Nonvolatile, Linear-Taper Digital Potentiometers 5V H MAX5481 MAX5482 W MAX480 L Figure 9. Positive LCD Bias Control Using a Voltage-Divider 5V MAX480 MAX5483 MAX5484 W L Figure 10. Positive LCD Bias Control Using a Variable Resistor Programmable Filter Figure ...

Page 19

... Nonvolatile, Linear-Taper Digital Selector Guide PART CONFIGURATION MAX5481ETE Voltage-divider MAX5481EUD Voltage-divider MAX5482ETE Voltage-divider MAX5482EUD Voltage-divider MAX5483ETE Variable resistor MAX5483EUD Variable resistor MAX5484ETE Variable resistor MAX5484EUD Variable resistor TOP VIEW + GND SCLK(INC) 4 DIN(U/D) 5 SPI/UD 6 N.C. 7 *SEE FUNCTIONAL DIAGRAM Chip Information PROCESS: BiCMOS ...

Page 20

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

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