Datasheet

MSP430G2x32
MSP430G2x02
www.ti.com SLAS723H –DECEMBER 2010–REVISED MAY 2013
10-Bit ADC, Built-In Voltage Reference (MSP430G2x32 Only)
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 1.41 1.5 1.59
Positive built-in reference
V
REF+
3 V V
voltage
I
VREF+
≤ I
VREF+
max, REF2_5V = 1 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, ±2
REF2_5V = 0
VREF+ load regulation 3 V LSB
I
VREF+
= 500 µA ± 100 µA,
Analog input voltage V
Ax
≈ 1.25 V, ±2
REF2_5V = 1
I
VREF+
= 100 µA→900 µA,
V
REF+
load regulation V
Ax
≈ 0.5 × VREF+,
3 V 400 ns
response time Error of conversion result ≤ 1 LSB,
ADC10SR = 0
Maximum capacitance at
C
VREF+
I
VREF+
≤ ±1 mA, REFON = 1, REFOUT = 1 3 V 100 pF
pin VREF+
ppm/
TC
REF+
Temperature coefficient
(1)
I
VREF+
= const with 0 mA ≤ I
VREF+
≤ 1 mA 3 V ±100
°C
Settling time of internal
I
VREF+
= 0.5 mA, REF2_5V = 0,
t
REFON
reference voltage to 99.9% 3.6 V 30 µs
REFON = 0 → 1
VREF
I
VREF+
= 0.5 mA,
Settling time of reference
t
REFBURST
REF2_5V = 1, REFON = 1, 3 V 2 µs
buffer to 99.9% VREF
REFBURST = 1, ADC10SR = 0
(1) Calculated using the box method: (MAX(-40 to 85°C) – MIN(-40 to 85°C)) / MIN(-40 to 85°C) / (85°C – (–40°C))
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