Rainbow-electronics MAX1299 Manual do Utilizador descarregar pdf (Página 4)

MAX1298/MAX1299

12-Bit Serial-Output Temperature Sensors

with 5-Channel ADC

4 _______________________________________________________________________________________

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

EXTERNAL VOLTAGE REFERENCE CHARACTERISTICS

MAX1298 0.8 2.5

Reference Voltage Range V

REF

MAX1299 0.8 1.2

Converting 10

REF Input Resistance

Shutdown 25

MΩ

REF Input Capacitance 24 pF

INTERNAL TEMPERATURE MEASUREMENT CHARACTERISTICS

Resolution

0.13

°C

MAX129_A

±0.75

MAX129_B ±1T

= +85°C, P

= 1mW

MAX129_C ±1

MAX129_A

±0.75

MAX129_B ±1

= 0°C to +70°C

MAX129_C ±2

MAX129_A

±0.75

MAX129_B ±1

Output Error (Notes 1, 9)

= -40°C to 0°C,

= +70°C to +85°C

MAX129_C ±4

°C

Power-Supply Rejection Ratio PSRR (Note 7) 0.2

°C/V

Noise

0.18 °C

RMS

EXTERNAL TEMPERATURE MEASUREMENT CHARACTERISTICS

Output Error 2N3904 (Note 10) ±2 ±4 °C

Remote Diode Excitation (1X) 10 µA

Remote Diode Excitation (10X) 100 µA

ELECTRICAL CHARACTERISTICS (continued)

= 4.75V to 5.25V (MAX1298), V

= +2.7V to 3.6V (MAX1299), external reference, V

REF

= +2.5V (MAX1298), V

REF

= +1.2V

(MAX1299), f

SCLK

= 2.5MHz, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

= +25°C.)

1 2 3 4 5 6 7 8 9 ... 19 20

MAX1298/MAX1299 1

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