IC DGTL POT DUAL 256-TAP 10-UMAX

MAX5405EUB+

Manufacturer Part NumberMAX5405EUB+
DescriptionIC DGTL POT DUAL 256-TAP 10-UMAX
ManufacturerMaxim Integrated Products
MAX5405EUB+ datasheet
 


Specifications of MAX5405EUB+

Taps256Resistance (ohms)100K
Number Of Circuits2Temperature Coefficient35 ppm/°C Typical
Memory TypeVolatileInterface3-Wire Serial
Voltage - Supply2.7 V ~ 5.5 VOperating Temperature-40°C ~ 85°C
Mounting TypeSurface MountPackage / Case10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Resistance In Ohms100KNumber Of PotsDual
Taps Per Pot256Resistance275 Ohms
Wiper MemoryVolatileDigital InterfaceSerial (3-Wire, SPI)
Operating Supply Voltage2.7 V to 5.5 VSupply Current5 uA
Maximum Operating Temperature+ 85 CMinimum Operating Temperature- 40 C
Description/functionDual 256-Tap, Low Drift, Digital Potentiometers in 10-æMAXMounting StyleSMD/SMT
Supply Voltage (max)5.5 VSupply Voltage (min)2.7 V
Tolerance25 %Lead Free Status / RoHS StatusLead free / RoHS Compliant
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19-1934; Rev 2; 11/05
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).
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.
________________________________________________________________ Maxim Integrated Products
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.
Dual 256-Tap, Low-Drift,
♦ 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 /100k Resistor Values
PART
MAX5403EUB
Applications
MAX5404EUB
MAX5405EUB
Note: All devices operate over the -40°C to +85°C temperature
range.
TOP VIEW
Features
Ordering Information
R
PKG
PIN-PACKAGE
(k )
CODE
10 µMAX
10
U10C-4
10 µMAX
50
U10C-4
10 µMAX
100
U10C-4
Pin Configuration
GND
1
10
L
A
L
2
9
W
B
A
MAX5403
H
3
8
V
B
MAX5404
DD
MAX5405
W
4
7
SCLK
B
CS
5
6
DIN
MAX
1

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MAX5405EUB+ Summary of contents

  • Page 1

    ... Impedance Matching SPI is a registered trademark of Motorola, Inc. µMAX is a registered trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products 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. Dual 256-Tap, Low-Drift, ♦ 10-Pin µMAX Small Footprint Package ♦ ...

  • Page 2

    Dual 256-Tap, Low-Drift, Digital Potentiometers in 10-µMAX ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V DD DIN, SCLK, CS .........................................................-0. GND .......................................-0. Maximum Continuous Current Into ...

  • Page 3

    Digital Potentiometers in 10-µMAX ELECTRICAL CHARACTERISTICS (continued +5V, unless otherwise noted unless otherwise noted.) PARAMETER SYMBOL End-to-End Resistance DIGITAL INPUTS Input High Voltage Input Low Voltage Input Leakage Current Input Capacitance TIMING CHARACTERISTICS (ANALOG) Wiper-Settling Time ...

  • Page 4

    Dual 256-Tap, Low-Drift, Digital Potentiometers in 10-µMAX (V = +5.0V +25°C, unless otherwise noted WIPER RESISTANCE vs. WIPER VOLTAGE (50k ) 380 360 340 320 V = +3V DD 300 280 V = +5V DD 260 ...

  • Page 5

    Digital Potentiometers in 10-µMAX (V = +5.0V +25°C, unless otherwise noted VARIABLE RESISTOR INL vs. INPUT CODE (50k ) 0.04 0.02 0.00 -0.02 -0.04 -0.06 -0.08 -0.10 -0.12 -0.14 -0. 128 160 ...

  • Page 6

    Dual 256-Tap, Low-Drift, Digital Potentiometers in 10-µMAX (V = +5.0V +25°C, unless otherwise noted SUPPLY CURRENT vs. LOGIC INPUT VOLTAGE 10 1 0.1 0. +3V DD 0.001 0.0001 0 0.5 1.0 1.5 2.0 2.5 ...

  • Page 7

    Digital Potentiometers in 10-µMAX PIN NAME 1 GND Ground 2 L Low Terminal of Resistor High Terminal of Resistor Wiper Terminal of Resistor SPI Chip Select 6 DIN ...

  • Page 8

    Dual 256-Tap, Low-Drift, Digital Potentiometers in 10-µMAX CS SCLK 1ST CLOCK PULSE DIN TIME Figure 2. Potentiometer Serial Data Timing Circuit CSO CSS SCLK DIN Figure 3. Detailed Serial Interface Timing Diagram of ...

  • Page 9

    Digital Potentiometers in 10-µMAX ADDRESS B0 (A0) B1 (D7) B2 (D6) (MSB) First Bit In Figure 4. Serial Data Format R3 W MAX5403 MAX5404 MAX5405 + ...

  • Page 10

    ... 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. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products ...

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