MSP430G2744, MSP430G2544, MSP430G2444
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SLAS892C – MARCH 2013 – REVISED SEPTEMBER 2014
5.30 10-Bit ADC, Built-In Voltage Reference
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
MIN
TYP
MAX
UNIT
I
VREF+
≤
1 mA, REF2_5V = 0
2.2
Positive built-in reference
V
CC,REF+
V
analog supply voltage range
I
VREF+
≤
1 mA, REF2_5V = 1
2.9
I
VREF+
≤
I
VREF+
max, REF2_5V = 0
3 V
1.41
1.5
1.59
Positive built-in reference
V
REF+
V
voltage
I
VREF+
≤
I
VREF+
max, REF2_5V = 1
3 V
2.35
2.5
2.65
Maximum VREF+ load
I
LD,VREF+
3 V
±1
mA
current
I
VREF+
= 500 µA ± 100 µA,
Analog input voltage V
Ax
≈
0.75 V,
3 V
±2
REF2_5V = 0
VREF+ load regulation
LSB
I
VREF+
= 500 µA ± 100 µA,
Analog input voltage V
Ax
≈
1.25 V,
3 V
±2
REF2_5V = 1
I
VREF+
= 100 µA to 900 µA,
VREF+ load regulation
V
Ax
≈
0.5 x V
REF+
,
3 V
400
ns
response time
Error of conversion result
≤
1 LSB,
ADC10SR = 0
Maximum capacitance at pin
I
VREF+
≤
±1 mA,
C
VREF+
3 V
100
pF
VREF+
REFON = 1, REFOUT = 1
I
VREF+
= constant with
TC
REF+
Temperature coefficient
(1)
3 V
±100
ppm/°C
0 mA
≤
I
VREF+
≤
1 mA
Settling time of internal
I
VREF+
= 0.5 mA, REF2_5V = 0,
t
REFON
3.6 V
30
µs
reference voltage
REFON = 0 to 1
I
VREF+
= 0.5 mA,
Settling time of reference
REF2_5V = 1,
t
REFBURST
3 V
2
µs
buffer to 99.9% VREF
REFON = 1,
REFBURST = 1, ADC10SR = 0
(1)
Calculated using the box method:
I temperature: (MAX(-40 to 85°C) – MIN(-40 to 85°C)) / MIN(-40 to 85°C) / (85°C – (–40°C))
Copyright © 2013–2014, Texas Instruments Incorporated
Specifications
33
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