MSP432P401R_16 Datasheet, PDF (67/200 Pages) Texas Instruments – Mixed-Signal Microcontrollers

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MSP432P401R, MSP432P401M
SLAS826E – MARCH 2015 – REVISED JULY 2016
Table 5-30 lists the characteristics of the temperature sensor and built-in V_1/2.
Table 5-30. 14-Bit ADC, Temperature Sensor and Built-In V_1/2
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
V_SENSOR
TC_SENSOR
t_SENSOR
(sample)
PARAMETER
See ^{(1) (2)}
See ⁽²⁾
Sample time required if ADCTCMAP
= 1 and channel (MAX – 1) is
selected ⁽³⁾
TEST CONDITIONS
ADC14ON = 1, ADC14TCMAP = 1,
T_A = 0°C
ADC14ON = 1, ADC14TCMAP = 1
ADC14ON = 1, ADC14TCMAP = 1,
Error of conversion result ≤ 1 LSB
V_CC
MIN TYP MAX UNIT
685
mV
1.9
mV/°C
5
µs
AVCC voltage divider for
V_1/2
ADC14BATMAP = 1 on MAX input ADC14ON = 1, ADC14BATMAP = 1
channel
48% 50% 52%
t_{V 1/2}
(sample)
Sample time required if
ADC14BATMAP = 1 and channel
MAX is selected⁽⁴⁾
ADC14ON = 1, ADC14BMAP = 1
1
µs
(1) The temperature sensor offset can be as much as ±35°C. TI recommends a single-point calibration to minimize the offset error of the
built-in temperature sensor.
(2) The TLV structure contains calibration values for 30°C ±3°C and 85°C ±3°C for each of the available reference voltage levels. The
sensor voltage can be computed as V_SENSE = TC_SENSOR × (Temperature,°C) + V_SENSOR, where TC_SENSOR and V_SENSOR can be
computed from the calibration values for higher accuracy.
(3) The typical equivalent impedance of the sensor is 250 kΩ. The sample time required includes the sensor-on time t_SENSOR(on).
(4) The on-time t_V1/2(on) is included in the sampling time t_{V 1/2 (sample)}. No additional on time is needed.
875
850
825
800
775
750
725
700
675
650
625
600
-40 -20
0
20
40
60
Ambient Temperature (°C)
80 100
D020
Figure 5-29. Typical Temperature Sensor Voltage
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Specifications
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