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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX5497 Datasheet

10-Bit - Dual - Nonvolatile/ Linear-Taper Digital Potentiometers

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19-3562; Rev 2; 1/06
10-Bit,EVAALVUAAILTAIOBNLEKIT Dual, Nonvolatile, Linear-Taper
Digital Potentiometers
General Description
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 10kand 50kare 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.
Applications
Gain and Offset Adjustment
LCD Contrast Adjustment
Pressure Sensors
Low-Drift Programmable-Gain Amplifiers
Mechanical Potentiometer Replacement
Volume Control
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
PKG CODE
Features
Wiper Position Stored in Nonvolatile Memory and
Recalled Upon Power-Up
16-Pin, 5mm x 5mm x 0.8mm TQFN Package
35ppm/°C End-to-End Resistance Temperature
Coefficient
5ppm/°C Ratiometric Temperature Coefficient
10kand 50kEnd-to-End Resistor Values
3-Wire SPI-Compatible Serial Interface
Reliability (TA = +85°C)
50,000 Wiper Store Cycles
50 Years Wiper Data Retention
1.5µA (max) Standby Current
Single +2.7V to +5.25V Supply Operation
Dual ±2.5V Supply Operation
Pin Configurations
TOP VIEW
12 11 10 9
DIN 13
N.C. 14
N.C. 15
SCLK 16
MAX5494
MAX5495
8 VSS
7 N.C.
6 N.C.
5 VDD
1 23 4
5mm × 5mm × 0.8mm TQFN
DIN 13
N.C. 14
N.C. 15
SCLK 16
12 11 10 9
MAX5496
MAX5497
8 VSS
7 N.C.
6 N.C.
5 VDD
MAX5494ETE -40°C to +85°C 16 TQFN-EP* T1655-2
MAX5495ETE -40°C to +85°C 16 TQFN-EP* T1655-2
*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.
1 23 4
5mm × 5mm × 0.8mm TQFN
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX5497 Datasheet

10-Bit - Dual - Nonvolatile/ Linear-Taper Digital Potentiometers

No Preview Available !

10-Bit, Dual, Nonvolatile, Linear-Taper
Digital Potentiometers
ABSOLUTE MAXIMUM RATINGS
VDD to GND ...........................................................-0.3V to +6.0V
VSS to GND............................................................-3.5V to +0.3V
VDD to VSS .............................................................-0.3V to +6.0V
H1, H2, L1, L2, W1, W2 to VSS.........(VSS - 0.3V) to (VDD + 0.3V)
CS, SCLK, DIN to GND ..............................-0.3V to (VDD + 0.3V)
Maximum Continuous Current into H_, L_, and W_
MAX5494/MAX5496/MAX5498 ....................................±5.0mA
MAX5495/MAX5497/MAX5499 ....................................±1.0mA
Maximum Current Into Other Pins .................................±50.0mA
Continuous Power Dissipation (TA = +70°C)
16-Pin TQFN (derate 20.8mW/°C above +70°C) ....1666.7mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°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.
ELECTRICAL CHARACTERISTICS
(VDD = +2.7V to +5.25V, VSS = GND = 0, VH_ = VDD, VL_ = 0, TA = -40°C to +85°C, unless otherwise noted. Typical values are at
VDD = +5.0V, TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
DC PERFORMANCE (MAX5494/MAX5495/MAX5498/MAX5499 Programmable Voltage-Divider)
Resolution
N
10
Integral Nonlinearity (Note 2)
Differential Nonlinearity (Note 2)
INL
DNL
VDD = 2.7V
VDD = 5V
VDD = 2.7V
VDD = 5V
End-to-End Resistance
Temperature Coefficient
TCR
TYP MAX UNITS
Bits
±2
LSB
±2
±1
LSB
±1
35 ppm/°C
Ratiometric Temperature
Coefficient
Full-Scale Error
Zero-Scale Error
Wiper Capacitance
End-to-End Resistance
Channel-to-Channel Division
Ratio Matching
MAX5494/MAX5498
FSE
MAX5495/MAX5499
MAX5494/MAX5498
ZSE
MAX5495/MAX5499
CW
MAX5494/MAX5498
RHL MAX5495/MAX5499
MAX5494
VDD = 3V, midcode: 512
MAX5495
-4
-4
0
0
7.5
37.5
5
-2.5
-0.75
3.3
1.45
60
10
50
0.05
0.15
ppm/°C
0
LSB
0
5
LSB
5
pF
12.5
k
62.5
%
Resistance from W_ to L_ and H_
MAX5494/MAX5498, W_ at 15 code, H_ and
L_ shorted to VSS, measure resistance from
W_ to H_ (Figures 4 and 5)
MAX5495/MAX5499, W_ at 15 code, H_ and
L_ shorted to VSS, measure resistance from
W_ to H_ (Figures 4 and 5)
6.3
25
k
2 _______________________________________________________________________________________


Part Number MAX5497
Description 10-Bit - Dual - Nonvolatile/ Linear-Taper Digital Potentiometers
Maker Maxim Integrated Products
Total Page 20 Pages
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