MAX5477 datasheet(3/16 Pages) MAXIM

3 / 16 page

Dual, 256-Tap, Nonvolatile, I2C-Interface,

Digital Potentiometers

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ELECTRICAL CHARACTERISTICS (continued)

(VDD = +2.7V to +5.25V, H_ = VDD, L_ = GND, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VDD = +5V,

TA = +25°C.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Dual Code Matching

R0 and R1 set to same code

(all codes), VDD = 3V or 5V

±3

LSB

DC PERFORMANCE (RESISTOR CHARACTERISTICS)

Wiper Resistance

(Note 5)

325

675

Wiper Capacitance

MAX5477

7.5

12.5

MAX5478

37.5

62.5

End-to-End Resistance

RHL

MAX5479

100

125

DIGITAL INPUTS

VDD = 3.4V to 5.25V

2.4

Input High Voltage (Note 6)

VIH

VDD < 3.4V

0.7 x VDD

Input Low Voltage

VIL

(Note 6)

0.8

Output Low Voltage

VOL

ISINK = 3mA

0.4

WP Pullup Resistance

IWP

255

Input Leakage Current

ILEAK

±1

µA

Input Capacitance

DYNAMIC CHARACTERISTICS

Crosstalk

HA = 1kHz (0 to VDD), LA = GND,

LB = GND, measure WB

-75

MAX5477

400

MAX5478

100

3dB Bandwidth (Note 7)

MAX5479

kHz

Total Harmonic Distortion Plus

Noise

THD+N

H_ = 1VRMS, f = 1kHz, L_ = GND,

measure W_

0.003

NONVOLATILE MEMORY RELIABILITY

Data Retention

TA = +85°C

Years

TA = +25°C

200,000

Endurance

TA = +85°C

50,000

Stores

POWER SUPPLY

Power-Supply Voltage

VDD

2.70

5.25

Writing to EEPROM, digital inputs at

GND or VDD, TA = +25°C (Note 8)

250

400

WP = GND

20.6

Supply Current

IDD

Normal operation,

digital inputs at GND or

VDD, TA = +25°C

WP = VDD

0.5

µA

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