DS1856E-025R datasheet(5/31 Pages) MAXIM

Part #	DS1856E-025R

Description	Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection

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Manufacturer	MAXIM [Maxim Integrated Products]

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Dual, Temperature-Controlled Resistors with Inter-

nally Calibrated Monitors and Password Protection

_____________________________________________________________________

5

Note 10: After this period, the first clock pulse is generated.

Note 11: The maximum tHD:DAT only has to be met if the device does not stretch the LOW period (tLOW) of the SCL signal.

Note 12: A device must internally provide a hold time of at least 300ns for the SDA signal (see the VIH MIN of the SCL signal) to

bridge the undefined region of the falling edge of SCL.

Note 13: CB—total capacitance of one bus line, timing referenced to 0.9 x VCC and 0.1 x VCC.

Note 14: Guaranteed by design.

Typical Operating Characteristics

(VCC = 5.0V, TA = +25°C, for both 50k

Ω and 20kΩ versions, unless otherwise noted.)

TEMPERATURE (

°C)

40

60

80

20

0

-20

650

700

750

800

600

-40

100

SUPPLY CURRENT vs. TEMPERATURE

SDA = SCL = VCC

SUPPLY CURRENT vs. VOLTAGE

VOLTAGE (V)

5.0

4.5

4.0

3.5

450

500

600

550

700

650

750

800

400

3.0

5.5

SDA = SCL = VCC

RESISTANCE vs. SETTING

SETTING (DEC)

200

150

100

50

10

20

30

40

50

60

0

250

50k

Ω VERSION

RESISTANCE vs. SETTING

SETTING (DEC)

200

150

100

50

5

10

15

20

0

250

20k

Ω VERSION

ACTIVE SUPPLY CURRENT

vs. SCL FREQUENCY

SCL FREQUENCY (kHz)

300

200

100

720

740

760

780

800

700

0

400

SDA = VCC

RESISTOR 0 INL (LSB)

SETTING (DEC)

225

200

150 175

50 75 100 125

25

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

1.0

-1.0

0

250

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