Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - Digital potentiometer linear Permanent uMAX 8

General Description

The MAX5527/MAX5528/MAX5529 linear-taper digital

potentiometers perform the same function as mechanical

potentiometers, replacing the mechanics with a simple

2-wire up/down digital interface. These digital poten-

tiometers provide an optional one-time programmable

feature that sets the power-on reset position of the wiper.

Once the wiper position is programmed, the 2-wire inter-

face can be disabled to prevent unwanted adjustment.

The MAX5527/MAX5528/MAX5529 provide an end-to-end

resistance of 100kΩ, 50kΩ, and 10kΩ, respectively. The

devices feature low temperature coefficients of 35ppm/°C

end-to-end and 5ppm/°C ratiometric. All devices offer 64

wiper positions and operate from a single +2.7V to +5.5V

supply. An ultra-low, 0.25µA (typ) standby supply current

saves power in battery-operated applications.

The MAX5527/MAX5528/MAX5529 are available in

3mm x 3mm, 8-pin TDFN and 5mm x 3mm, 8-pin

µMAX

packages. Each device is guaranteed over the

-40°C to +105°C temperature range.

Applications

Products Using One-Time Factory Calibration

Mechanical Potentiometer Replacements

Features

o Wiper Position Stored After One-Time Fuse

Programming

o 64 Tap Positions

o Wiper Position Programmed Through Simple

2-Wire Up/Down Interface

o 35ppm/

°°

C End-to-End Temperature Coefficient

o 5ppm/

°°

C Ratiometric Temperature Coefficient

o Ultra-Low 1.5µA (max) Static Supply Current

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

o 10kΩ, 50kΩ, and 100kΩ End-to-End Resistances

o Tiny, 3mm x 3mm, 8-Pin TDFN and 5mm x 3mm,

8-Pin µMAX Packages

MAX5527/MAX5528/MAX5529

One-Time Programmable, Linear-Taper Digital

Potentiometers

________________________________________________________________

Maxim Integrated Products

Ordering Information

19-3665; Rev 1; 7/09

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

EVALUATION KIT

AVAILABLE

PART PIN-PACKAGE

RESISTANCE

(kΩ)

TOP

MARK

MAX5527GTA+ 8 TDFN-EP* 100 AOG

MAX5527GUA+ 8 µMAX 100 —

MAX5528GTA+ 8 TDFN-EP* 50 AOH

MAX5528GUA+ 8 µMAX 50 —

MAX5529GTA+ 8 TDFN-EP* 10 AOI

MAX5529GUA+ 8 µMAX 10 —

Denotes a lead(Pb)-free/RoHS-compliant package.

EP = Exposed pad.

Note: All devices are specified over the -40°C to +105°C operat-

ing temperature range.

GND

µMAX

TDFN*

TOP VIEW

U/D

*EXPOSED PADDLE. CONNECT TO GND.

MAX5527

MAX5528

MAX5529

GND

23 4

U/D

87 6 5

MAX5527

MAX5528

MAX5529

Pin Configurations

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Functional Diagram

MAX5527

MAX5528

MAX5529

64-

POSITION

DECODER

UP/DOWN

COUNTER

ONE-TIME

PROGRAM

BLOCK

GND

U/D

Summary of content (12 pages)

PAGE 1
9-3665; Rev 1; 7/09 KIT ATION EVALU E L B AVAILA One-Time Programmable, Linear-Taper Digital Potentiometers The MAX5527/MAX5528/MAX5529 linear-taper digital potentiometers perform the same function as mechanical potentiometers, replacing the mechanics with a simple 2-wire up/down digital interface. These digital potentiometers provide an optional one-time programmable feature that sets the power-on reset position of the wiper.
PAGE 2
MAX5527/MAX5528/MAX5529 One-Time Programmable, Linear-Taper Digital Potentiometers ABSOLUTE MAXIMUM RATINGS VDD to GND ...........................................................-0.3V to +6.0V PV to GND ...........................................................-0.3V to +12.0V All Other Pins to GND.................................-0.3V to (VDD + 0.3V) Maximum Continuous Current into H, L, and W MAX5527 ......................................................................±0.5mA MAX5528 ....................
PAGE 3
One-Time Programmable, Linear-Taper Digital Potentiometers (VDD = +2.7V to +5.5V, VH = VDD, VL = GND, TA = -40°C to +105°C, unless otherwise noted. Typical values are at VDD = +5.0V, TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DIGITAL INPUTS (CS, U/D) 0.7 x VDD Input High Voltage VIH V Input Low Voltage VIL Input Current IIN ±0.1 Input Capacitance CIN 5 0.
PAGE 4
Typical Operating Characteristics (VDD = +5.0V, TA = +25°C, unless otherwise noted.) R-DNL ERROR (LSB) 0 -0.005 0 -0.010 -0.010 0 16 32 64 48 0 16 32 0 64 48 MAX5528 R-INL ERROR vs. WIPER POSITION MAX5529 R-DNL ERROR vs. WIPER POSITION MAX5529 R-INL ERROR vs. WIPER POSITION 0.005 R-INL ERROR (LSB) 0 -0.005 -0.005 -0.010 -0.010 -0.010 0 16 32 64 48 0 16 32 WIPER RESISTANCE vs. WIPER VOLTAGE END-TO-END RESISTANCE PERCENTAGE CHANGE vs.
PAGE 5
One-Time Programmable, Linear-Taper Digital Potentiometers CS = U/D = GND 250 SUPPLY CURRENT (nA) VDD = 5V 200 150 VDD = 3V 50 100 SUPPLY CURRENT (µA) 250 1000 MAX5527 toc11 CS = U/D = GND 200 150 100 0 35 60 85 110 VDD = 3V 1 2.5 3.0 TEMPERATURE (°C) 3.5 4.0 4.5 5.0 0 5.5 1 2 3 4 5 6 DIGITAL INPUT VOLTAGE (V) SUPPLY VOLTAGE (V) TOTAL HARMONIC DISTORTION vs. FREQUENCY MIDSCALE WIPER RESPONSE vs.
PAGE 6
MAX5527/MAX5528/MAX5529 One-Time Programmable, Linear-Taper Digital Potentiometers Typical Operating Characteristics (continued) (VDD = +5V, TA = +25°C, unless otherwise noted.
PAGE 7
One-Time Programmable, Linear-Taper Digital Potentiometers PIN NAME FUNCTION 1 W Wiper Connection 2 CS Chip-Select Input. A high-to-low CS transition determines the increment/decrement mode. Increment if U/D is high, or decrement if U/D is low. CS is also used for one-time programming. See the PV OneTime Programming section. 3 VDD Supply Voltage. Bypass with a 0.1µF capacitor to GND. 4 GND Ground 5 PV One-Time Programming Voltage.
PAGE 8
MAX5527/MAX5528/MAX5529 One-Time Programmable, Linear-Taper Digital Potentiometers VDD tUP CS tCU tCI tIL tIH tIC U/D tIW VW Figure 2. Increment-Mode Timing Diagram VDD tUP CS tCU tCI tIH tIL tIC U/D tIW VW Figure 3. Decrement-Mode Timing Diagram CS U/D VW WIPER REMAINS THE SAME WITH U/D HIGH AND CS RISING WIPER CHANGES WITH U/D LOW AND CS RISING Figure 4.
PAGE 9
One-Time Programmable, Linear-Taper Digital Potentiometers +11V PV 0V tCH tCL tCP tPH CS tPC OPTIONAL 7TH LOCKOUT BIT 6 PULSES RECORD WIPER POSITION Figure 5. One-Time Program Mode, Serial-Interface Timing Diagram Table 1.
PAGE 10
MAX5527/MAX5528/MAX5529 One-Time Programmable, Linear-Taper Digital Potentiometers 5V 5V H 30V 30V W MAX5527 MAX5528 MAX5529 VOUT VOUT H MAX5527 MAX5528 MAX5529 L W L Figure 7. Positive LCD Bias Control Using a Voltage-Divider Figure 8. Positive LCD Bias Control Using a Variable Resistor +5V W VIN 5V L H R3 C VIN V0 REF OUT VOUT H R1 MAX6160 ADJ R1 GND MAX5527 MAX5528 MAX5529 W R2 L H MAX5527 MAX5528 MAX5529 R2 W L Figure 9.
PAGE 11
One-Time Programmable, Linear-Taper Digital Potentiometers For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
PAGE 12
MAX5527/MAX5528/MAX5529 One-Time Programmable, Linear-Taper Digital Potentiometers Revision History REVISION NUMBER REVISION DATE 0 5/05 Initial release 1 7/09 Added lead-free note to the Ordering Information. Added exposed pad information to the Pin Description. Added text to PV One-Time Programming section. DESCRIPTION PAGES CHANGED — 1, 7, 9 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product.