Maxim MAX5468EUT, MAX5466EUK, MAX5464EXT, MAX5462EXT, MAX5461EXT Datasheet

General Description

The MAX5460–MAX5468 linear-taper digital potentiome­ters perform the same function as a mechanical poten­tiometer or a variable resistor. These devices consist of a
fixed resistor and a wiper contact with 32-tap points that
are digitally controlled through a 2-wire serial interface.

The MAX5462/MAX5465/MAX5468 are configured as
potentiometers. The rest of the devices in this family are
configured as variable resistors. See Pin Configurations
for part functionality.

Three resistance values are available: 10kΩ (MAX5466/
MAX5467/MAX5468), 50kΩ (MAX5463/MAX5464/
MAX5465), and 100kΩ (MAX5460/MAX5461/MAX5462).
The MAX5460–MAX5465 (100kΩ and 50kΩ) are avail­able in space-saving 5-pin and 6-pin SC70 packages.
The MAX5466/MAX5467/MAX5468 (10kΩ) are available
in 5-pin and 6-pin SOT23 packages.

Applications

LCD Screen Adjustment

Volume Control

Mechanical Potentiometer Replacement

Gain Adjustment

Line Impedance Matching

Features

♦ Miniature SC70 and SOT23 Packages

♦ 0.3µA Ultra-Low Supply Current

♦ +2.7V to +5.5V Single-Supply Operation

♦ Glitchless Switching Between Resistor Taps

♦ Power-On Reset to Midscale

♦ 2-Wire Up/Down Serial Interface

♦ 10kΩ, 50kΩ, and 100kΩ Resistance Values

MAX5460–MAX5468

32-Tap FleaPoT™, 2-Wire Digital

Potentiometers

________________________________________________________________ Maxim Integrated Products 1

Pin Configurations

Ordering Information

19-1956; Rev 2; 9/02

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.

Functional Diagram appears at end of data sheet.

FleaPoT is a trademark of Maxim Integrated Products Inc.

PART

MAX5460EXK -40°C to +85°C 5 SC70 ACA 100

MAX5461EXT -40°C to +85°C 6 SC70 AAP 100

MAX5462EXT -40°C to +85°C 6 SC70 AAQ 100

MAX5463EXK -40°C to +85°C 5 SC70 ACB 50

MAX5464EXT -40°C to +85°C 6 SC70 AAR 50

MAX5465EXT -40°C to +85°C 6 SC70 AAS 50

MAX5466EUK

MAX5467EUT -40°C to +85°C 6 SOT23 AARH 10

MAX5468EUT -40°C to +85°C 6 SOT23 AARI 10

TEMP

RANGE

-40°C to +85°C 5 SOT23 ADQQ 10

PIN­PACKAGE

TOP

MARK

R (kΩ)

TOP VIEW

15HV

DD

2

GND

MAX5460

34

MAX5463
MAX5466

SOT23, SC70

CSU/D

16HV

DD

2

GND

MAX5461

34

MAX5464
MAX5467

SOT23, SC70

L5

CSU/D

16HV

DD

2

GND

MAX5462

34

MAX5465
MAX5468

SOT23, SC70

W5

CSU/D

MAX5460–MAX5468

32-Tap FleaPoT™, 2-Wire Digital
Potentiometers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD= +2.7V to +5.5V, VH= VDD, VL= 0, TA= -40°C to +85°C. Typical values are at VDD= +2.7V, TA= +25°C, unless

otherwise noted.)

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.

VDDto GND..............................................................-0.3V to +6V

All Other Pins to GND.................................-0.3V to (VDD+ 0.3)V

Input and Output Latch-Up Immunity.............................±200mA

Maximum Continuous Current into H, L, and W

MAX5460/MAX5461/MAX5462 (100kΩ) .......................±0.6mA

MAX5463/MAX5464/MAX5465 (50kΩ) .........................±1.3mA

MAX5466/MAX5467/MAX5468 (10kΩ) .........................±1.3mA

Continuous Power Dissipation (TA= +70°C)

5-pin SC70 (derate 3.1mW/°C above TA= +70°C)..........247mW

5-pin SOT23 (derate 7.1mW/°C above TA= +70°C)........571mW

6-pin SC70 (derate 3.1mW/°C above TA= +70°C) ..........245mW

6-pin SOT23 (derate 8.7mW/°C above T

A

= +70°C).....695.7mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Soldering Temperature (soldering, 10s) ..........................+300°C

DC PERFORMANCE

Resolution 32 Taps

End-to-End Resistance

End-to-End Resistance Tempco TC

Ratiometric Resistance Tempco 5 ppm/°C

Integral Nonlinearity INL ±0.5 ±1 LSB

Differential Nonlinearity DNL ±1 LSB

Full-Scale Error ±0.1 LSB

Zero-Scale Error 1 LSB

Wiper Resistance R

DIGITAL INPUTS

Input High Voltage V

Input Low Voltage V

TIMING CHARACTERISTICS (Figures 1, 2)
U/D Mode to CS Setup t

CS to U/D Step Setup t
CS to U/D Step Hold t

U/D Step Low Period t
U/D Step High Period t

Up/Down Toggle Rate (Note 1) f

Output Settling Time (Note 2) t

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

MAX5460/MAX5461/MAX5462 75 100 125

MAX5463/MAX5464/MAX5465 37.5 50 62.5

MAX5466/MAX5467/MAX5468 7.5 10 12.5

R

MAX5460–MAX5465 600 1200

W

MAX5466/MAX5467/MAX5468 160 240

IH

IL

CU

CI

IC

IL

IH

TOGGLE

SETTLE

100kΩ var i ab l e r esi stor confi g ur ati on, C L = 10p F1

100kΩ p otenti om eter confi g ur ati on, C L = 10p F 0.25

0.7 x V

DD

25 ns

50 ns

25 ns

25 ns

25 ns

35 ppm/°C

0.3 x V

DD

1 MHz

kΩ

Ω

V

V

µs

MAX5460–MAX5468

32-Tap FleaPoT™, 2-Wire Digital

Potentiometers

_______________________________________________________________________________________ 3

Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

Note 1: Up/Down Toggle Rate:

Note 2: Typical settling times are dependent on end-to-end resistance.
Note 3: Supply current taken while changing wiper tap, f

TOGGLE

= 1MHz.

Note 4: Supply current taken while wiper position is fixed.

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +2.7V to +5.5V, VH= VDD, VL= 0, TA= -40°C to +85°C. Typical values are at VDD= +2.7V, TA= +25°C, unless

otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

POWER SUPPLIES

Supply Voltage V

Active Supply Current (Note 3) I

Standby Supply Current (Note 4) I

f

TOGGLE

=

1

t

SETTLE

DD

DD

SD

VDD = +5V 0.3 1 µA

2.7 5.5 V

25 µA

WIPER RESISTANCE vs. WIPER VOLTAGE

(MAX5460–MAX5465)

700

600

500

400

300

WIPER RESISTANCE (Ω)

200

100

0

0 2.01.0 3.0 4.00.5 2.51.5 3.5 4.5 5.0

VDD = +2.7V

VDD = +5V

WIPER VOLTAGE (V)

W-TO-L RESISTANCE

vs. TAP POSITION

120

100

80

60

RESISTANCE (kΩ)

40

20

0

1357911131517 19 21 23 25 27 29 31

TAP POSITION

100kΩ

50kΩ

10kΩ

MAX5460 toc01

MAX5460 toc04

WIPER RESISTANCE vs. WIPER VOLTAGE

(MAX5466/MAX5467/MAX5468)

200

180

160

140

120

100

80

60

WIPER RESISTANCE (Ω)

40

20

0

0 1.0 1.5 2.00.5 2.5 3.0 3.5 4.54.0 5.0

VDD = +2.7V

VDD = +5V

WIPER VOLTAGE (V)

SUPPLY CURRENT vs. TEMPERATURE

0.50

0.45

0.40

0.35

0.30

0.25

0.20

CURRENT (µA)

0.15

0.10

0.05

0.00

-40 10-15 35 60 85
TEMPERATURE (°C)

VDD = +5V

VDD = +2.7V

END-TO-END RESISTANCE % CHANGE

0.10

0.05

MAX5460 toc02

-0.05

-0.10

-0.15

-0.20

END-TO-END RESISTANCE % CHNAGE

-0.25

10kΩ

0

-40 10-15 35 60 85

TAP-TO-TAP SWITCHING TRANSIENT

MAX5460 toc05

U/D

2V/div

OUTPUT

W

100mV/div

vs. TEMPERATURE

50kΩ, 100kΩ

TEMPERATURE (°C)

(MAX5460)

200ns/div

MAX5460 toc03

MAX5460 toc06