Datasheet

600
650
700
750
800
850
900
950
1000
1050
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Ambient Temperature - Degrees Celsius
Typical Temperature Sensor Voltage - mV
MSP430FR573x
MSP430FR572x
www.ti.com SLAS639H –JULY 2011–REVISED SEPTEMBER 2013
REF, Temperature Sensor and Built-In V
MID
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
ADC10ON = 1, INCH = 0Ah,
V
SENSOR
See
(1)
2 V, 3 V 790 mV
T
A
= 0°C
TC
SENSOR
ADC10ON = 1, INCH = 0Ah 2 V, 3 V 2.55 mV/°C
2 V 30
Sample time required if ADC10ON = 1, INCH = 0Ah,
t
SENSOR(sample)
µs
channel 10 is selected
(2)
Error of conversion result ≤ 1 LSB
3 V 30
2 V 0.97 1.0 1.03
ADC10ON = 1, INCH = 0Bh,
V
MID
AV
CC
divider at channel 11 V
V
MID
is ~0.5 × V
AVCC
3 V 1.46 1.5 1.54
Sample time required if ADC10ON = 1, INCH = 0Bh,
t
VMID(sample)
2 V, 3 V 1000 ns
channel 11 is selected
(3)
Error of conversion result ≤ 1 LSB
(1) The temperature sensor offset can vary significantly. A single-point calibration is recommended to minimize the offset error of the built-in
temperature sensor.
(2) The typical equivalent impedance of the sensor is 51 kΩ. The sample time required includes the sensor-on time t
SENSOR(on)
.
(3) The on-time t
VMID(on)
is included in the sampling time t
VMID(sample)
; no additional on time is needed.
Figure 12. Typical Temperature Sensor Voltage
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