Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - Digital potentiometer linear Non-permanent SC 70 6

General Description

The MAX5460–MAX5468 linear-taper digital potentiome-

ters perform the same function as a mechanical poten-

tiometer 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 avail-

able 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

TOP VIEW

GND

CSU/D

15HV

MAX5460

MAX5463

MAX5466

SOT23, SC70

GND

CSU/D

16HV

MAX5461

MAX5464

MAX5467

SOT23, SC70

GND

CSU/D

16HV

MAX5462

MAX5465

MAX5468

SOT23, SC70

Pin Configurations

Ordering Information

19-1956; Rev 3; 11/05

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.

PART

PIN-

PACKAGE

TOP

MARK

(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

FleaPoT is a trademark of Maxim Integrated Products Inc.

Note: All devices operate over the -40°C to +85°C temperature

range.

Summary of content (10 pages)

PAGE 1
9-1956; Rev 3; 11/05 32-Tap FleaPoT ™, 2-Wire Digital Potentiometers 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.
PAGE 2
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.
PAGE 3
2-Tap FleaPoT ™, 2-Wire Digital Potentiometers (V DD = +2.7V to +5.5V, V H = V DD, V L = 0, T A = -40°C to +85°C. Typical values are at V DD = +2.7V, T A = +25°C, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V POWER SUPPLIES Supply Voltage VDD Active Supply Current (Note 3) IDD Standby Supply Current (Note 4) ISD 2.7 VDD = +5V 25 µA 1 µA 0.
PAGE 4
Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) R-DNL ERROR vs. INPUT CODE (100kΩ) 0.06 0.02 0 R-INL (LSB) 0 -0.02 -0.04 R-DNL (LSB) 0.04 0.02 0.02 0 -0.02 -0.02 -0.04 -0.06 -0.08 -0.04 -0.06 -0.06 -0.10 -0.08 -0.08 -0.12 -0.10 -0.10 0 5 10 15 20 25 -0.14 0 30 5 10 15 20 25 0 30 0.10 0 -0.05 -0.10 0 -0.05 5 10 15 20 25 0.15 0.10 0.05 0 -0.05 -0.20 -0.10 -0.15 0 30 INPUT CODE (DECIMAL) 30 0.20 -0.15 -0.25 -0.10 25 0.
PAGE 5
32-Tap FleaPoT ™, 2-Wire Digital Potentiometers The MAX5460–MAX5468 consist of a fixed resistor and a wiper contact with 32-tap points that are digitally controlled through a 2-wire serial interface. Three resistance values are available: 10kΩ (MAX5466/MAX5467/ MAX5468), 50kΩ (MAX5463/MAX5464/MAX5465), and 100kΩ (MAX5460/MAX5461/MAX5462). The MAX5462/MAX5465/MAX5468 are designed to operate as potentiometers. In this configuration, the low terminal of the resistor array is connected to ground (pin 2).
PAGE 6
MAX5460–MAX5468 32-Tap FleaPoT ™, 2-Wire Digital Potentiometers Power-On Reset All parts in this family feature power-on reset (POR) circuitry that sets the wiper position to midscale at powerup. By default, the chip is in the increment mode. Applications Information The MAX5460–MAX5468 are intended for circuits requiring digitally controlled adjustable resistance, such as LCD contrast control, where voltage biasing adjusts the display contrast.
PAGE 7
32-Tap FleaPoT ™, 2-Wire Digital Potentiometers MAX5460–MAX5468 +5V +5V H H 30V 30V W VOUT VOUT L L MAX5461 MAX5464 MAX5467 MAX5462 MAX5465 MAX5468 Figure 6. Positive LCD Bias Control Figure 5. Positive LCD Bias Control VCC VCC VIN VIN VOUT VOUT H W H L L MAX5461 MAX5464 MAX5467 MAX5462 MAX5465 MAX5468 a) b) Figure 7.
PAGE 8
32-Tap FleaPoT ™, 2-Wire Digital Potentiometers MAX5460–MAX5468 Functional Diagram H VDD GND CS MAX5460–MAX5468 UP/DN COUNTER 32-POSITION DECODER W U/D L Chip Information TRANSISTOR COUNT: 792 8 _______________________________________________________________________________________
PAGE 9
32-Tap FleaPoT ™, 2-Wire Digital Potentiometers SC70, 5L.EPS PACKAGE OUTLINE, 5L SC70 C 1 1 SOT-23 5L .EPS 21-0076 PACKAGE OUTLINE, SOT-23, 5L 21-0057 E 1 1 _______________________________________________________________________________________ 9 MAX5460–MAX5468 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.
PAGE 10
Package Information (continued) 6LSOT.EPS (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) PACKAGE OUTLINE, SOT 6L BODY 21-0058 G 1 1 SC70, 6L.EPS MAX5460–MAX5468 32-Tap FleaPoT ™, 2-Wire Digital Potentiometers PACKAGE OUTLINE, 6L SC70 21-0077 C 1 1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product.