MAX5478ETE datasheet(3/17 Pages) MAXIM

Part #	MAX5478ETE

Description	Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers

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Manufacturer	MAXIM [Maxim Integrated Products]

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

Digital Potentiometers

_______________________________________________________________________________________

3

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 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DIGITAL INPUTS

VDD = 3.4V to 5.25V

2.4

Input High Voltage (Note 5)

VIH

VDD < 3.4V

0.7 x VDD

V

Input Low Voltage

VIL

(Note 5)

0.8

V

Output Low Voltage

VOL

ISINK = 3mA

0.4

V

WP Pullup Resistance

IWP

255

k

Ω

Input Leakage Current

ILEAK

±1

µA

Input Capacitance

5pF

DYNAMIC CHARACTERISTICS

Crosstalk

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

LB = GND, measure WB

-75

dB

MAX5477

400

MAX5478

100

3dB Bandwidth (Note 6)

MAX5479

50

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

50

Years

TA = +25°C

200,000

Endurance

TA = +85°C

50,000

Stores

POWER SUPPLY

Power-Supply Voltage

VDD

2.70

5.25

V

Writing to EEPROM, digital inputs at

GND or VDD, TA = +25°C (Note 7)

250

400

WP = GND

15

20.6

Supply Current

IDD

Normal operation, digital

inputs at GND or VDD,

TA = +25°C

WP = VDD

0.5

1

µA

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

ANALOG SECTION

MAX5477

325

MAX5478

500

Wiper Settling Time (Note 10)

tWS

MAX5479

1000

ns

DIGITAL SECTION

SCL Clock Frequency

fSCL

400

kHz

Setup Time for START Condition

tSU:STA

0.6

µs

Hold Time for START Condition

tHD:STA

0.6

µs

TIMING CHARACTERISTICS

(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. See Figure 1.) (Notes 8 and 9)

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