Datasheet

MSP430F47x3, MSP430F47x4
MIXED SIGNAL MICROCONTROLLER
SLAS545C − MAY 2007 − REVISED MARCH 2011
49
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
typical characteristics − SD16_A SNR/SINAD performance over OSR
OSR
50.0
55.0
60.0
65.0
70.0
75.0
80.0
85.0
90.0
95.0
100.0
10.00 100.00 1000.00
SNR/SINAD − dB
Figure 26. SNR/SINAD performance over OSR, f
SD16
= 1MHz, SD16REFON = 1, SD16GAINx = 1
V
IN
(t) = 1.2V + 500mV y sin(2p y 50Hz y t)
SINAD
SNR
SD16_A, temperature sensor and built-in V
CC
sense
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
TC
Sensor
Sensor temperature
coefficient
1.18 1.32 1.46 mV/K
V
Offset, sensor
Sensor offset voltage −100 100 mV
Sttlt
Temperature sensor voltage at T
A
= 85°C 3 V 435 475 515
V
Sensor
Sensor output voltage
(see Note 2)
Temperature sensor voltage at T
A
= 25°C 3 V 355 395 435
mV
V
Sensor
(
see
N
o
t
e
2)
Temperature sensor voltage at T
A
= 0°C 3 V 320 360 400
mV
V
CC, Sense
V
CC
divider at input 5 f
SD16
= 32kHz, SD16OSRx = 256, SD16REFON = 1 0.08 1/11 0.10 V
CC
R
Source, VCC
Source resistance of
V
CC
divider at input 5
500 kΩ
NOTES: 1. The following formula can be used to calculate the temperature sensor output voltage:
V
Sensor, typ
= TC
Sensor
( 273 + T [°C] ) + V
Offset, sensor
[mV]
2. Results based on characterization and/or production test, not TC
Sensor
or V
Offset, sensor
.
Measured with f
SD16
= 1MHz, SD16OSRx = 256, SD16REFON = 1.