Document
MAX5460–MAX5468
19-1956; Rev 3; 11/05
32-Tap FleaPoT™, 2-Wire Digital Potentiometers
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
FleaPoT is a trademark of Maxim Integrated Products Inc.
Functional Diagram appears at end of data sheet.
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
Ordering Information
PART
PIN-
TOP
PACKAGE MARK
R (kΩ)
PKG CODE
MAX5460EXK 5 SC70
ACA
100
X5-1
MAX5461EXT 6 SC70
AAP 100 X6S-1
MAX5462EXT 6 SC70
AAQ 100 X6S-1
MAX5463EXK 5 SC70
ACB
50
X5-1
MAX5464EXT 6 SC70
AAR 50 X6S-1
MAX5465EXT 6 SC70
AAS 50 X6S-1
MAX5466EUK 5 SOT23
ADQQ
10
U5-1
MAX5467EUT 6 SOT23
AARH
10
U6-1
MAX5468EUT 6 SOT23
AARI
10
U6-1
Note: All devices operate over the -40°C to +85°C temperature range.
Pin Configurations
TOP VIEW
VDD 1
5H
GND 2
U/D 3
MAX5460 MAX5463 MAX5466
4 CS
SOT23, SC70
VDD 1
6H
GND 2
5L
U/D 3
MAX5461 MAX5464 MAX5467
4 CS
SOT23, SC70
VDD 1
6H
GND 2
5W
U/D 3
MAX5462 MAX5465 MAX5468
4 CS
SOT23, SC70
________________________________________________________________ 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.
MAX5460–MAX5468
32-Tap FleaPoT™, 2-Wire Digital Potentiometers
ABSOLUTE MAXIMUM RATINGS
VDD to 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 TA = +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
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 +5.5V, 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
DC PERFORMANCE
Resolution
32 Taps
End-to-End Resistance
MAX5460/MAX5461/MAX5462 MAX5463/MAX5464/MAX5465
75 100 125 37.5 50 62.5
kΩ
MAX5466/MAX5467/MAX5468
7.5 10 12.5
End-to-End Resistance Tempco Ratiometric Resistance Tempco Integral Nonlinearity Differential Nonlinearity
TCR
INL DNL
35 ppm/°C 5 ppm/°C ±0.5 ±1 LSB
±1 LSB
Full-Scale Error Zero-Scale Error
±0.1 LSB 1 LSB
Wiper Resistance DIGITAL INPUTS
MAX5462/MAX5465 RW
MAX5468
600 1200 160 240
Ω
Input High Voltage
VIH
Input Low Voltage
VIL
TIMING CHARACTERISTICS (Figures 1, 2)
U/D Mode to CS Setup
tCU
CS to U/D Step Setup
tCI
CS to U/D Step Hold
tIC
U/D Step Low Period U/D Step High Period
tIL tIH
Up/Down Toggle Rate (Note 1)
fTOGGLE
Output Settling Time (Note 2)
tSETTLE
0.7 x VDD
25 50 25 25 25
100kΩ variable resistor configuration, CL = 10pF 100kΩ potentiometer configuration, CL = 10pF
1 1 0.25
0.3 x VDD
V V
.