MAX5498EVKIT+ Maxim Integrated Products, MAX5498EVKIT+ Datasheet

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MAX5498EVKIT+

Manufacturer Part Number
MAX5498EVKIT+
Description
KIT EVAL FOR MAX5498
Manufacturer
Maxim Integrated Products
Datasheets
1.MAX5494ETE.pdf (20 pages)
2.MAX5498EVKIT.pdf (13 pages)

Specifications of MAX5498EVKIT+

Main Purpose
Digital Potentiometer
Utilized Ic / Part
MAX5494, MAX5495, MAX5496, MAX5497, MAX5498, MAX5499
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Secondary Attributes
-
Embedded
-
Primary Attributes
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The MAX5494–MAX5499 10-bit (1024-tap), dual, non-
volatile, linear-taper, programmable voltage-dividers
and variable resistors perform the function of a
mechanical potentiometer, but replace the mechanics
with a 3-wire SPI™-compatible serial interface. The
MAX5494/MAX5495 are dual, 3-terminal, programma-
ble voltage-dividers; the MAX5496/MAX5497 are dual,
2-terminal variable resistors; and the MAX5498/
MAX5499 include one 2-terminal variable resistor and
one 3-terminal programmable voltage-divider.
The MAX5494–MAX5499 feature an internal, nonvolatile,
electrically erasable programmable read-only memory
(EEPROM) that stores the wiper position for initialization
during power-up. The 3-wire SPI-compatible serial inter-
face allows communication at data rates up to 7MHz.
The MAX5494–MAX5499 are ideal for applications requir-
ing digitally controlled potentiometers. End-to-end resis-
tance values of 10kΩ and 50kΩ are available with a
35ppm/°C end-to-end temperature coefficient. The ratio-
metric temperature coefficient is 5ppm/°C for each chan-
nel, making these devices ideal for applications requiring
low-temperature-coefficient programmable voltage-
dividers such as low-drift, programmable-gain amplifiers.
The MAX5494–MAX5499 operate with either a single
power supply (+2.7V to +5.25V) or dual power supplies
(±2.5V). The devices consume 400µA (max) of supply
current when writing data to the nonvolatile memory
and 1.5µA (max) of standby supply current. The
devices are available in space-saving (5mm x 5mm x
0.8mm), 16-pin TQFN package and are specified over
the extended (-40°C to +85°C) temperature range.
19-3562; Rev 2; 1/06
* EP = Exposed pad.
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
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.
MAX5494ETE
MAX5495ETE
Gain and Offset Adjustment
LCD Contrast Adjustment
Pressure Sensors
Low-Drift Programmable-Gain Amplifiers
Mechanical Potentiometer Replacement
Volume Control
PART
-40°C to +85°C 16 TQFN-EP*
-40°C to +85°C 16 TQFN-EP*
TEMP RANGE
________________________________________________________________ Maxim Integrated Products
Ordering Information
General Description
10-Bit, Dual, Nonvolatile, Linear-Taper
PIN-
PACKAGE
Applications
PKG CODE
T1655-2
T1655-2
♦ Wiper Position Stored in Nonvolatile Memory and
♦ 16-Pin, 5mm x 5mm x 0.8mm TQFN Package
♦ 35ppm/°C End-to-End Resistance Temperature
♦ 5ppm/°C Ratiometric Temperature Coefficient
♦ 10kΩ and 50kΩ End-to-End Resistor Values
♦ 3-Wire SPI-Compatible Serial Interface
♦ Reliability (T
♦ 1.5µA (max) Standby Current
♦ Single +2.7V to +5.25V Supply Operation
♦ Dual ±2.5V Supply Operation
Digital Potentiometers
Pin Configurations continued at end of data sheet.
Recalled Upon Power-Up
Coefficient
TOP VIEW
50,000 Wiper Store Cycles
50 Years Wiper Data Retention
SCLK
SCLK
N.C.
N.C.
N.C.
N.C.
DIN
DIN
A
13
14
15
16
13
14
15
16
5mm × 5mm × 0.8mm TQFN
5mm × 5mm × 0.8mm TQFN
= +85°C)
12
12
1
1
Pin Configurations
11
11
2
MAX5496
MAX5497
2
MAX5494
MAX5495
10
10
3
3
9
4
9
4
8
7
6
5
8
7
6
5
Features
V
N.C.
N.C.
V
V
N.C.
N.C.
V
SS
DD
SS
DD
1

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MAX5498EVKIT+ Summary of contents

Page 1

... EP = Exposed pad. Ordering Information continued at end of data sheet. Selector Guide appears at end of data sheet. SPI is a trademark of Motorola, Inc. ________________________________________________________________ Maxim Integrated Products 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. Digital Potentiometers ♦ ...

Page 2

Dual, Nonvolatile, Linear-Taper Digital Potentiometers ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6. GND............................................................-3.5V to +0. .............................................................-0.3V to +6. H1, H2, L1, L2, W1 .........(V SS ...

Page 3

Dual, Nonvolatile, Linear-Taper ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.25V GND = +5.0V +25°C.) (Note PARAMETER SYMBOL DC PERFORMANCE (MAX5496–MAX5499 Variable Resistor) Resolution Integral Nonlinearity ...

Page 4

Dual, Nonvolatile, Linear-Taper Digital Potentiometers ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.25V GND = +5.0V +25°C.) (Note PARAMETER SYMBOL Total Harmonic Distortion Analog Crosstalk NONVOLATILE ...

Page 5

Dual, Nonvolatile, Linear-Taper TIMING CHARACTERISTICS (V = +2.7V to +5.25V GND = +5.0V +25°C.) (Note PARAMETER SYMBOL ANALOG SECTION Wiper Settling Time (Note 6) SPI-COMPATIBLE SERIAL ...

Page 6

Dual, Nonvolatile, Linear-Taper Digital Potentiometers (V = +5.0V +25°C, unless otherwise noted DIFFERENTIAL NONLINEARITY vs. CODE (VARIABLE RESISTOR) 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 ...

Page 7

Dual, Nonvolatile, Linear-Taper (V = +5.0V +25°C, unless otherwise noted WIPER RESISTANCE vs. WIPER VOLTAGE (VARIABLE RESISTOR CODE IS 00 0000 0000 ...

Page 8

Dual, Nonvolatile, Linear-Taper Digital Potentiometers (V = +5.0V +25°C, unless otherwise noted CROSSTALK 400ns/div THD+N vs. FREQUENCY (MAX5494/MAX5498 10pF W_ CODE = 01111 01111 1 0.1 0.01 0.001 ...

Page 9

Dual, Nonvolatile, Linear-Taper PIN MAX5494/ MAX5496/ MAX5498/ MAX5495 MAX5497 MAX5499 — — 7,14,15 6, 7,14,15 6, 7,14, — ...

Page 10

Dual, Nonvolatile, Linear-Taper Digital Potentiometers V DD GND SCLK INTERFACE DIN NOTE: THE PROGRAMMABLE VOLTAGE-DIVIDER IS NOT INTENDED FOR CURRENT TO FLOW THROUGH THE WIPER. NOTE: SEE THE MAX5494/MAX5495/MAX5498/MAX5499 PROGRAMMABLE VOLTAGE-DIVIDERS SECTION. Figure 1. MAX5494/MAX5495 Functional ...

Page 11

Dual, Nonvolatile, Linear-Taper V DD GND SCLK DIN Figure 2. MAX5496/MAX5497 Functional Diagram V DD GND V SS POR CS SPI SCLK INTERFACE DIN NOTE: THE PROGRAMMABLE VOLTAGE-DIVIDER IS NOT INTENDED FOR CURRENT TO FLOW THROUGH ...

Page 12

Dual, Nonvolatile, Linear-Taper Digital Potentiometers Detailed Description The MAX5494–MAX5499 dual, nonvolatile, linear-taper, programmable voltage-dividers and variable resistors feature 1024 tap points (10-bit resolution) (see the Functional Diagrams ). These devices consist of multi- ple strings of equal resistor segments ...

Page 13

Dual, Nonvolatile, Linear-Taper resistance is equal to the nominal end-to-end resis- tance divided by 1024 (10-bit resolution). For example, the programmable resolution is 9.8Ω and 48.8Ω for the MAX5496/MAX5498 and the MAX5497/MAX5499, respectively. The 10-bit data in the 10-bit ...

Page 14

Dual, Nonvolatile, Linear-Taper Digital Potentiometers a) 24-BIT COMMAND/DATA WORD CS SCLK DIN b) 8-BIT COMMAND WORD CS SCLK DIN C1 C0 Figure 7. SPI-Compatible Serial-Interface Format Table ...

Page 15

Dual, Nonvolatile, Linear-Taper The “write wiper register” command writes data to the volatile random access memory (RAM), leaving the NV registers unchanged. When the device powers up, the data stored in the NV registers transfers to the wiper register, ...

Page 16

Dual, Nonvolatile, Linear-Taper Digital Potentiometers Copy NV Register to Wiper Register The “copy NV register to wiper register” (C1 11) restores the wiper position to the current value stored in the NV register. Figure 11 shows how ...

Page 17

Dual, Nonvolatile, Linear-Taper Positive LCD Bias Control Figures 12 and 13 show an application where the volt- age-divider or variable resistor is used to make an adjustable, positive LCD-bias voltage. The op amp pro- vides buffering and gain to ...

Page 18

Dual, Nonvolatile, Linear-Taper Digital Potentiometers Selector Guide PART CONFIGURATION Two programmable voltage- MAX5494ETE dividers Two programmable voltage- MAX5495ETE dividers MAX5496ETE Two variable resistors MAX5497ETE Two variable resistors One amm ab le vol tage- MAX5498ETE d ...

Page 19

Dual, Nonvolatile, Linear-Taper (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ Digital Potentiometers Package Information 19 ...

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 © 2006 Maxim Integrated Products Package Information (continued registered trademark of Maxim Integrated Products, Inc ...

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