Datasheet

MSP430F47x
MIXED SIGNAL MICROCONTROLLER
SLAS629A -- MARCH 2009 -- REVISED APRIL 2009
43
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
SD16_A, performance (f
SD16
= 30kHz, SD16REFON = 1, SD16BUFx = 01)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
SD16GAINx = 1,Signal Amplitude = 500mV
SD16OSRx = 256
3V 84
SINAD
Signal-to-noise +
distortion ratio
SD16GAINx = 1,Signal Amplitude = 500mV
SD16OSRx = 512
f
IN
=2.8Hz
3V 84
dB
d
i
s
t
o
r
t
i
o
n
r
a
t
i
o
SD16GAINx = 1,Signal Amplitude = 500mV
SD16OSRx = 1024
3V 84
Nominal gain SD16GAINx = 1, SD16OSRx = 1024 3V 0.97 1.00 1.02
dG/dT
Gain temperature
drift
SD16GAINx = 1, SD16OSRx = 1024 (see Note 1) 3V 15 ppm/_C
dG/dV
CC
Gain supply voltage
drift
SD16GAINx = 1, SD16OSRx = 1024, V
CC
= 2.5V - 3.6V
(see Note 2)
0.35 %/V
NOTES: 1. Calculated using the box method: (MAX(--40...85_C) -- MIN(--40...85_C))/MIN(--40...85_C)/(85C -- (--40_C))
2. Calculated using the box method: (MAX(2.5...3.6V) -- MIN(2.5...3.6V))/MIN(2.5...3.6V)/(3.6V -- 2.5V)
SD16_A, performance (f
SD16
= 1MHz, SD16OSRx = 256, SD16REFON = 1, SD16BUFx = 00)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
SD16GAINx = 1,Signal Amplitude = 500mV 3V 83.5 85
SD16GAINx = 2,Signal Amplitude = 250mV 3V 81.5 84
S
I
N
A
D
Si
g
nal-to-noise +
SD16GAINx = 4,Signal Amplitude = 125mV
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 = 62mV
f
I
N
=
5
0
H
z
,
100Hz
3V 73 76.5
dB
SD16GAINx = 16,Signal Amplitude = 31mV 3V 69 73
SD16GAINx = 32,Signal Amplitude = 15mV 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
Offset 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
PSRR
Power supply
rejection ratio
SD16GAINx = 1 3V >80 dB
NOTES: 1. Calculated using the box method: (MAX(--40...85_C) -- MIN(--40...85_C)) / MIN(--40...85_C) / (85_C--(--40_C))
2. Calculated using the ADC output code and the box method:
(MAX-code(2.5...3.6V) -- MIN-code(2.5...3.6V)) / MIN-code(2.5...3.6V) / (3.6V -- 2.5V)