Texas Instruments MSP430F4132IPM, Руководство пользователя

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MSP430F41x2
MIXED SIGNAL MICROCONTROLLER
SLAS648E -- APRIL 2009 -- REVISED MARCH 2011
41
POST OFFICE BOX 655303

DALLAS, TEXAS 75265
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 V
CC
MIN TYP MAX UNIT
P iti b ilt i f l
I
VREF+

1 mA, REF2_5V = 0 2.2
V
CC,REF+
Positive built-in reference analog
supply voltage range
I
VREF+

0.5 mA, REF2_5V = 1 2.8
V V
CC,REF+
supply voltage range
I
VREF+

1 mA, REF2_5V = 1 2.9
V
V
REF+
Positive built-in reference voltage
I
VREF+

I
VREF+
max, REF2_5V = 0
2.2 V/
3 V
1.41 1.5 1.59 V
V
REF+
Positive built in reference voltage
I
VREF+

I
VREF+
max, REF2_5V = 1 3 V 2.35 2.5 2.65 V
I Ma im m V load c rrent
2.2 V

0.5
mA I
LD,VREF+
Maximum V
REF+
load current
3 V

1
mA
V load reg lation
I
VREF+ =
500

A

100

A,
Analog input voltage V
Ax

0.75 V,
REF2_5V = 0
2.2 V/
3 V

2 LSB
V
REF+
load regulation
I
VREF+ =
500

A

100

A,
Analog input voltage V
Ax

1.25 V,
REF2_5V = 1
3 V

2 LSB
V
REF+
load regulation response
I
VREF+
= 100

A

900

A,
V 0 5 x V Error of
ADC10SR = 0 3 V 400
ns
V
REF+
load regulation response
time
V
Ax

0.5 x V
REF+,
Error of
conversion result

1 LSB
ADC10SR = 1 3V 2000
ns
C
VREF+
Max. capacitance at pin V
REF+
(see Note 1)
I
VREF+
 
1 mA,
REFON = 1, REFOUT = 1
2.2 V/
3 V
100 pF
TC
REF+
Temperature coefficient
I
VREF+ =
const. with 0 mA

I
VREF+

1 mA
(see Note 3)
2.2 V/
3 V

100 ppm/

C
t
REFON
Settling time of internal reference
voltage (see Note 2) I
VREF+ =
0.5 mA, REF2_5V = 0,
REFON = 0

1
3.6 V 30

s
I
VREF+ =
0.5 mA,
REF2 5V = 0,
ADC10SR = 0 2.2 V 1
t
Settling time of reference buffer
REF2_5V = 0,
REFON = 1,
REFBURST = 1
ADC10SR = 1 2.2 V 2.5
s t
REFBURST
Settling time of reference buffer
(see Note 2)
I
VREF+ =
0.5 mA,
REF2 5V = 1,
ADC10SR = 0 3 V 2

s
REF2_5V = 1,
REFON = 1,
REFBURST = 1
ADC10SR = 1 3 V 4.5
NOTES: 1. The capacitance applied to the internal buffer operational amplifier, if switched to terminal
P6.4/UCB0CLK/UCA0STE/A4/CA6/V
eref+
/V
ref+
(REFOUT = 1), must be limited; the reference buffer may become unstable,
otherwise.
2. The condition is that the error in a conversion started after t
REFON
or t
RefBuf
is less than

0.5 LSB.
3. Calculated using the box method: ((MAX(V
REF
(T)) -- MIN(V
REF
(T))) / MIN(V
REF
(T)) / (T
MAX
-- T
MIN
)