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MAX11359A_12 Datasheet, PDF (53/67 Pages) Maxim Integrated Products – 16-Bit Data-Acquisition System with ADC, DAC, UPIOs, RTC, Voltage Monitors, and Temp Sensor
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MAX11359A
16-Bit Data-Acquisition System with ADC, DAC,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
TEMP_CTRL Register (Power-On State: 0000 XXXX)
MSB
IMUX1
IMUX0
IVAL1
IVAL0
The temperature-sensor control register controls the
internal and external temperature measurement.
IMUX<1:0>: Internal current-source MUX bits. Selects
the pin to be driven by the internal current sources as
shown in Table 20. The power-on default is 00.
LSB
X
X
X
X
IVAL<1:0>: Internal current-source value bits. Selects
the value of the internal current source as shown in
Table 21. The power-on default is 00.
Table 20. Selecting Internal Current Source
CURRENT SOURCE
Disabled
Internal temperature sensor
AIN1
AIN2
IMUX1
0
0
1
1
IMUX0
0
1
0
1
Table 21. Setting the Current Level
CURRENT
I1
I2
I3
I4
TYPICAL CURRENT (µA)
4
60
64
120
IVAL1
0
0
1
1
IVAL0
0
1
0
1
TEMP_CAL Register (Power-On State: Varies By Factory Calibration)
MSB
TGAIN7
TGAIN6
TGAIN5
TGAIN4
TGAIN3
TGAIN2
TOFFS5
TOFFS4
TOFFS3
TOFFS2
TOFFS1
TOFFS0
TGAIN1
X
TGAIN0
LSB
X
This register is the internal temperature sensor calibra-
tion register.
TGAIN<7:0>: Factory-preset temperature gain correction
coefficient bits. This is the linear scaling factor used to
derive absolute temperature values from temperature val-
ues measured with the internal temperature sensor
(TACTUAL = TMEAS x TGAIN + TOFFS). The coefficients are
optimized for an internal voltage reference of 1.25V using
the four-current method. The power-on default varies.
TOFFS<5:0>: Factory-preset temperature offset cor-
rection coefficient bits. This is the linear offset factor
used to derive absolute temperature values from tem-
perature values measured with the internal temperature
sensor (TACTUAL = TMEAS x TGAIN + TOFFS). The coeffi-
cients are optimized for an internal voltage reference of
1.25V using the four-current method. The power-on
default varies.
Maxim Integrated
53
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