MSP430F41x2
MIXED SIGNAL MICROCONTROLLER
SLAS648E -- APRIL 2009 -- REVISED MARCH 2011
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
10-bit ADC, built-in voltage reference
PARAMETER
TEST CONDITIONS
1 mA, REF2_5V = 0
0.5 mA, REF2_5V = 1
1 mA, REF2_5V = 1
V
MIN TYP
MAX UNIT
CC
I
I
I
2.2
2.8
2.9
VREF+
VREF+
VREF+
Positive built-in reference analog
supply voltage range
V
V
V
CC,REF+
2.2 V/
3 V
I
I
I
I
max, REF2_5V = 0
1.41
2.35
1.5
1.59
V
V
VREF+
VREF+
VREF+
VREF+
Positive built-in reference voltage
REF+
max, REF2_5V = 1
3 V
2.2 V
3 V
2.5
2.65
0.5
1
I
Maximum V
load current
REF+
mA
LD,VREF+
I
500 A 100 A,
VREF+ =
2.2 V/
3 V
Analog input voltage V 0.75 V,
REF2_5V = 0
2
2
LSB
Ax
V
V
load regulation
REF+
I
500 A 100 A,
VREF+ =
Analog input voltage V 1.25 V,
REF2_5V = 1
3 V
LSB
Ax
I
V
= 100 A900 A,
ADC10SR = 0
ADC10SR = 1
3 V
3V
400
VREF+
load regulation response
REF+
0.5 x V
Error of
ns
Ax
REF+,
time
2000
conversion result 1 LSB
Max. capacitance at pin V
(see Note 1)
I
1 mA,
2.2 V/
3 V
REF+
VREF+
C
VREF+
100
pF
REFON = 1, REFOUT = 1
I
const. with 0 mA I
1 mA
VREF+
2.2 V/
3 V
VREF+ =
TC
Temperature coefficient
100 ppm/C
REF+
(see Note 3)
I 0.5 mA, REF2_5V = 0,
VREF+ =
Settling time of internal reference
voltage (see Note 2)
3.6 V
30
1
s
t
t
REFON
REFON = 0 1
I
0.5 mA,
VREF+ =
ADC10SR = 0 2.2 V
ADC10SR = 1 2.2 V
REF2_5V = 0,
REFON = 1,
REFBURST = 1
2.5
2
Settling time of reference buffer
(see Note 2)
s
REFBURST
I
0.5 mA,
VREF+ =
ADC10SR = 0
3 V
REF2_5V = 1,
REFON = 1,
REFBURST = 1
ADC10SR = 1
operational
3 V
4.5
to
NOTES: 1. The
capacitance
applied
to
the
/V
internal
buffer
amplifier,
if
switched
terminal
P6.4/UCB0CLK/UCA0STE/A4/CA6/V
otherwise.
(REFOUT = 1), must be limited; the reference buffer may become unstable,
eref+ ref+
2. The condition is that the error in a conversion started after t
or t
is less than 0.5 LSB.
RefBuf
REFON
3. Calculated using the box method: ((MAX(V
(T)) -- MIN(V
(T))) / MIN(V
(T)) / (T
-- T
)
REF
REF
REF
MAX
MIN
41
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