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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX5403 Datasheet

Dual 256-Tap / Low-Drift / Digital Potentiometers

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19-1934; Rev 2; 11/05
Dual 256-Tap, Low-Drift,
Digital Potentiometers in 10-µMAX
General Description
The MAX5403/MAX5404/MAX5405 is a family of dual
linear taper digital potentiometers. Each device has one
3-terminal potentiometer and one 2-terminal variable
resistor (Figure 1). The MAX5403/MAX5404/MAX5405
operate from +2.7V to +5.5V single-supply voltages
and use an ultra-low supply current of 0.1µA. These
devices also provide glitchless switching between
resistors taps as well as a convenient power-on reset
(POR) that sets the wiper to the midscale position at
power-up. The potentiometer consists of a fixed resistor
with a wiper contact that is digitally controlled through a
3-wire serial interface and has 256-tap points. It per-
forms the same function as a discrete potentiometer or
variable resistor.
These parts are ideal for applications requiring digitally
controlled resistors. Three resistance values are avail-
able: 10k(MAX5403), 50k(MAX5404), and 100k
(MAX5405). A nominal resistor-temperature coefficient
of 35ppm/°C end-to-end and 5ppm/°C ratiometric make
the MAX5403/MAX5404/MAX5405 ideal for applications
requiring low temperature-coefficient variable resistors,
such as adjustable-gain circuit configurations.
The MAX5403/MAX5404/MAX5405 are available in a 10-
pin µMAX® package. Each device is guaranteed over the
extended industrial temperature range (-40°C to +85°C).
Applications
Mechanical Potentiometer Replacement
Low-Drift Programmable Gain Amplifier (PGA)
Volume Control
LCD Screen Adjustment
Adjustable Voltage Reference
Programmable Filters, Delays, Time Constant
Impedance Matching
SPI is a registered trademark of Motorola, Inc.
µMAX is a registered trademark of Maxim Integrated
Products, Inc.
Features
10-Pin µMAX Small Footprint Package
256-Tap Positions
Ultra Low 0.1µA Supply Current
+2.7V to +5.5V Single-Supply Operation
Low End-To-End Temperature Coefficient:
35ppm/°C
Low Ratiometric Temperature Coefficient:
5ppm/°C
Power-On Reset: Wiper Goes to Midscale
(Position 128)
Glitchless Switching Between Resistor Taps
3-Wire SPI™ -Interface Compatible
10k/50k/100kResistor Values
Ordering Information
PART
PIN-PACKAGE
R
(k)
PKG
CODE
MAX5403EUB 10 µMAX
10 U10C-4
MAX5404EUB 10 µMAX
50 U10C-4
MAX5405EUB 10 µMAX
100 U10C-4
Note: All devices operate over the -40°C to +85°C temperature
range.
Pin Configuration
TOP VIEW
GND 1
LB 2
HB 3
WB 4
CS 5
MAX5403
MAX5404
MAX5405
µMAX
10 LA
9 WA
8 VDD
7 SCLK
6 DIN
________________________________________________________________ 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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX5403 Datasheet

Dual 256-Tap / Low-Drift / Digital Potentiometers

No Preview Available !

Dual 256-Tap, Low-Drift,
Digital Potentiometers in 10-µMAX
ABSOLUTE MAXIMUM RATINGS
VDD to GND ..............................................................-0.3V to +6V
DIN, SCLK, CS .........................................................-0.3V to +6V
HX, LX, WX to GND .......................................-0.3V to (VDD + 0.3)
Maximum Continuous Current Into HX, LX, and WX ...........±1mA
Continuous Power Dissipation (TA = +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°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 = +5V, unless otherwise noted. VH = VDD, VL = 0, TA = TMIN to TMAX. Typical values are at VDD = +5V, TA = +25°C,
unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DC PERFORMANCE (Voltage Divider Mode)
Resolution
N
8 Bits
Integral Nonlinearity (Notes 1, 2)
INL
±1/2 LSB
Differential Nonlinearity (Notes 1, 2)
DNL
±1/2 LSB
End-to-End Resistor Tempco
Ratiometric Resistor Tempco
TCR
35 ppm/°C
5 ppm/°C
Full-Scale Error
MAX5403
-8 LSB
Zero-Scale Error
MAX5403
+8 LSB
Full-Scale Error
MAX5404
-1.6 LSB
Zero-Scale Error
MAX5404
+1.6
LSB
Full-Scale Error
MAX5405
-0.8 LSB
Zero-Scale Error
MAX5405
+0.8
LSB
DC PERFORMANCE (Variable Resistor Mode)
Resolution
N
8 Bits
MAX5403 (Pot A)
±2.5
VDD = +5V
MAX5403 (Pot B)
MAX5404
±1
±1
Integral Nonlinearity (Notes 1, 3)
INL
MAX5405
MAX5403 (Pot A)
±1
±4.5 LSB
VDD = +3V
MAX5403 (Pot B)
MAX5404
±3
±1.5
MAX5405
±1.5
Differential Nonlinearity
(Notes 1, 3)
DNL
VDD = +5V
VDD = +3V
±1/2 LSB
DC PERFORMANCE (Resistor Characteristics)
Wiper Resistance (Note 4)
RW
VDD = +5V
VDD = +3V
275
550
Wiper Capacitance
MAX5403
CW MAX5404/MAX5405
50
pF
30
2 _______________________________________________________________________________________


Part Number MAX5403
Description Dual 256-Tap / Low-Drift / Digital Potentiometers
Maker Maxim
Total Page 10 Pages
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