Rainbow Electronics MAX1299 - Manual (Page 4)

MAX1298/MAX1299
12-Bit Serial-Output Temperature Sensors
with 5-Channel ADC
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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
V
Converting 10
REF Input Resistance
Shutdown 25
M Ω
REF Input Capacitance 24 pF
INTERNAL TEMPERATURE MEASUREMENT CHARACTERISTICS
Resolution 0.13 °C
MAX129_A ±0.75
MAX129_B ±1 T A = +85 °C, P
D = 1mW
MAX129_C ±1
MAX129_A ±0.75
MAX129_B ±1 T A = 0 °C to +70°C
MAX129_C ±2
MAX129_A ±0.75
MAX129_B ±1
Output Error (Notes 1, 9)
T
A
= -40 °C to 0°C,
T A = +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)
(V DD = 4.75V to 5.25V (MAX1298), V DD = +2.7V to 3.6V (MAX1299), external reference, V REF = +2.5V (MAX1298), V REF = +1.2V
(MAX1299), f SCLK = 2.5MHz, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)