Datasheet

MSP430F42xA
MIXED SIGNAL MICROCONTROLLER
SLAS587 -- FEBRUARY 2008
29
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
SD16, analog performance (f
SD16
= 1MHz, SD16OSRx = 256, SD16REFON = 1)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
SD16GAINx = 1, Signal Amplitude = 500 mV 3V 83.5 85
SD16GAINx = 2, Signal Amplitude = 250 mV 3V 81.5 84
S
I
N
A
D
Si
g
nal-to-noise +
SD16GAINx = 4, Signal Amplitude = 125 mV
f
I
N
=
50Hz,
3V 76 79.5
d
B
SIN
A
D
S
i
g
n
a
l
t
o
n
o
i
s
e
+
distortion ratio
SD16GAINx = 8, Signal Amplitude = 62 mV
f
I
N
=
5
0
H
z
,
100Hz
3V 73 76.5
dB
SD16GAINx = 16, Signal Amplitude = 31 mV 3V 69 73
SD16GAINx = 32, Signal Amplitude = 15 mV 3V 62 69
SD16GAINx = 1 3V 0.97 1.00 1.02
SD16GAINx = 2 3V 1.90 1.96 2.02
G
SD16GAINx = 4 3V 3.76 3.86 3.96
G
Nominal gain
SD16GAINx = 8
3V 7.36 7.62 7.84
SD16GAINx = 16 3V 14.56 15.04 15.52
SD16GAINx = 32 3V 27.20 28.35 29.76
E
O
f
f
s
e
t
e
r
r
o
r
SD16GAINx = 1 3V ±0.2
%
F
S
R
E
OS
O
f
f
set error
SD16GAINx = 32
3V ±1.5
%FSR
d
E
/
d
T
Offset error
t
e
m
p
e
r
a
t
u
r
e
SD16GAINx = 1 3V ±4 ±20
p
p
m
dE
OS
/
dT
temperature
coefficient
SD16GAINx = 32
3V ±20 ±100
p
p
m
FSR/_C
C
M
R
R
Common-mode
SD16GAINx = 1, Common-mode input signal:
V
ID
= 500 mV, f
IN
= 50 Hz, 100 Hz
3V >90
d
B
CMRR
C
o
m
m
o
n
m
o
d
e
rejection ratio
SD16GAINx = 32, Common-mode input signal:
V
ID
=16mV,f
IN
= 50 Hz, 100 Hz
3V >75
dB
AC PSRR
AC power-supply
rejection ratio
SD16GAINx = 1, V
CC
=3V± 100 mV, f
VCC
=50Hz 3V >80 dB
X
T
Crosstalk 3V <--100 dB
SD16, built-in temperature sensor
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
S
t
t
Temperature sensor voltage at T
A
=85°C 3V 435 475 515
V
Sensor
Sensor output
v
o
l
t
a
g
e
(
s
e
e
N
o
t
e
2
)
Temperature sensor voltage at T
A
=25°C 3V 355 395 435
mV
V
S
e
n
s
o
r
vo
l
t
age
(
see
N
o
t
e
2
)
Temperature sensor voltage at T
A
=0°C 3V 320 360 400
m
V
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
.