Datasheet

MSP430F47x3, MSP430F47x4
MIXED SIGNAL MICROCONTROLLER
SLAS545C − MAY 2007 − REVISED MARCH 2011
48
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
SD16_A, performance (f
SD16
= 1MHz, SD16OSRx = 256, SD16REFON = 1)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
SD16GAINx = 1,
Signal Amplitude V
PP
= 500 mV
3 V 83 85
SD16GAINx = 2,
Signal Amplitude V
PP
= 250 mV
3 V 81 84
SINAD
Si
g
nal-to-noise +
SD16GAINx = 4,
Signal Amplitude V
PP
= 125 mV
f
IN
= 50 Hz, 100 Hz
3 V 76 79
dB
SINAD
Signal to noise
+
distortion ratio
SD16GAINx = 8,
Signal Amplitude V
PP
= 62 mV
f
IN
=
50
Hz
,
100
Hz
(see Notes 1 and 2)
3 V 70 75
dB
SD16GAINx = 16,
Signal Amplitude V
PP
= 31 mV
3 V 66 70
SD16GAINx = 32,
Signal Amplitude V
PP
= 15 mV
3 V 62 65
SD16GAINx = 1 3 V 0.97 1.00 1.02
SD16GAINx = 2 3 V 1.90 1.96 2.02
G
SD16GAINx = 4 3 V 3.76 3.86 3.96
G
Nominal gain
SD16GAINx = 8
3 V 7.36 7.62 7.84
SD16GAINx = 16 3 V 14.56 15.04 15.52
SD16GAINx = 32 3 V 27.20 28.35 29.76
E
Offset error
SD16GAINx = 1 3 V ±0.2
%FSR
E
OS
Offset error
SD16GAINx = 32
3 V ±1.5
%FSR
dE /dT
Offset error temperature
SD16GAINx = 1 3 V ±4 ±20
ppm
dE
OS
/dT
Offset
error
temperature
coefficient
SD16GAINx = 32
3 V ±20 ±100
ppm
FSR/_C
CMRR
Common-mode rejection
SD16GAINx = 1, Common-mode input signal:
V
ID
= 500 mV, f
IN
= 50 Hz, 100 Hz
3 V >90
dB
CMRR
Common mode
rejection
ratio
SD16GAINx = 32, Common-mode input signal:
V
ID
= 16 mV, f
IN
= 50 Hz, 100 Hz
3 V >75
dB
AC PSRR
AC power supply
rejection ratio
SD16GAINx = 1, V
CC
= 3V ± 100mV, f
Vcc
= 50 Hz 3 V >80 dB
X
T
Crosstalk SD16GAINx = 1, V
ID
= 500 mV, f
IN
= 50 Hz, 100 Hz 3 V <−100 dB
NOTES: 1. The following voltages were applied to the SD16 inputs:
V
IN, A+
(t) = 1.2V + V
PP
/2 × sin(2π × f
IN
× t)
V
IN, A−
(t) = 1.2V − V
PP
/2 × sin(2π × f
IN
× t)
resulting in a differential voltage of V
diff
= V
IN, A+
(t) − V
IN, A−
(t) = V
PP
× sin(2π × f
IN
× t)
2. The SINAD performance of the SD16_A maybe degraded. See errata sheet.