MAX1298 datasheet(4/20 Pages) MAXIM

4 / 20 page

12-Bit Serial-Output Temperature Sensors

with 5-Channel ADC

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PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

MAX1298

+3.0

REF Line Regulation

MAX1299

+0.2

mV/V

MAX1298

REF Load Regulation

0 to 100

µA output current

(Note 8)

MAX1299

µV/µA

EXTERNAL VOLTAGE REFERENCE CHARACTERISTICS

MAX1298

0.8

2.5

Reference Voltage Range

VREF

MAX1299

0.8

1.2

Converting

REF Input Resistance

Shutdown

Ω

REF Input Capacitance

INTERNAL TEMPERATURE MEASUREMENT CHARACTERISTICS

Resolution

0.13

°C

TA = +85

°C, PD = 1mW

MAX129_C

±1

TA = 0

°C to +70°C

MAX129_C

±2

Output Error (Notes 1, 9)

TA = -40

°C to 0°C,

TA = +70

°C to +85°C

MAX129_C

±4

°C

Power-Supply Rejection Ratio

PSRR

(Note 7)

0.2

°C/V

Noise

0.18

°CRMS

EXTERNAL TEMPERATURE MEASUREMENT CHARACTERISTICS

Output Error

2N3904 (Note 10)

±2±4

°C

Remote Diode Excitation (1X)

µA

Remote Diode Excitation (10X)

100

µA

ELECTRICAL CHARACTERISTICS (continued)

(VDD = 4.75V to 5.25V (MAX1298), VDD = +2.7V to 3.6V (MAX1299), external reference, VREF = +2.5V (MAX1298), VREF = +1.2V

(MAX1299), fSCLK = 2.5MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)

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