DS1856B-030T datasheet(3/31 Pages) MAXIM

Part #	DS1856B-030T

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

_____________________________________________________________________

3

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Thermometer Error

TERR

-40°C to +95°C

±3.0

°C

DIGITAL THERMOMETER

(VCC = 2.85V to 5.5V, TA = -40°C to +95°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

EEPROM Writes

+70°C (Note 14)

50,000

Writes

NONVOLATILE MEMORY CHARACTERISTICS

(VCC = 2.85V to 5.5V)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Resolution

∆VMON

610

µV

Supply Resolution

∆VCC

1.6

mV

Input/Supply Accuracy

(MON1, MON2, MON3, VCC)

ACC

At factory setting

0.25

0.5

% FS

(full scale)

Update Rate for MON1, MON2,

MON3, Temp, or VCC

tframe

47

60

ms

Input/Supply Offset

(MON1, MON2, MON3, VCC)

VOS

(Note 14)

0

5

LSB

ANALOG VOLTAGE MONITORING

(VCC = 2.85V to 5.5V, TA = -40°C to +95°C, unless otherwise noted.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Position 00h Resistance (50k

Ω)TA = +25°C

0.65

1.0

1.35

k

Ω

Position FFh Resistance (50k

Ω)TA = +25°C

40

50

60

k

Ω

Position 00h Resistance (30k

Ω)TA = +25°C

0.40

k

Ω

Position FFh Resistance (30k

Ω)TA = +25°C

30

k

Ω

Position 00h Resistance (20k

Ω)TA = +25°C

0.20

0.40

0.55

k

Ω

Position FFh Resistance (20k

Ω)TA = +25°C

15

20

25

k

Ω

Position 00h Resistance (10k

Ω)TA = +25°C

0.40

k

Ω

Position FFh Resistance (10k

Ω)TA = +25°C

10

k

Ω

Position 00h Resistance (2.5k

Ω)TA = +25°C

0.1

0.175

0.250

k

Ω

Position FFh Resistance (2.5k

Ω)TA = +25°C

2.0

2.50

3.0

k

Ω

Absolute Linearity

(Note 6)

-2

+2

LSB

Relative Linearity

(Note 7)

-1

+1

LSB

Temperature Coefficient

(Note 8)

50

ppm/°C

ANALOG RESISTOR CHARACTERISTICS

(VCC = 2.85V to 5.5V, TA = -40°C to +95°C, unless otherwise noted.)

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