參數(shù)資料
型號: MSP430F2619SKGD1
廠商: TEXAS INSTRUMENTS INC
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 16 MHz, RISC MICROCONTROLLER, UUC82
封裝: DIE-82
文件頁數(shù): 58/90頁
文件大?。?/td> 1141K
代理商: MSP430F2619SKGD1
C
VREF+
1mF
0
1 m s
1 0 m s
1 0 0 m s
t
REFON
t
REFON
.6 6 x CVREF+ [m s ]
w ith C
VREF+ i n mF
100 mF
10 mF
SLAS697A
– MARCH 2010 – REVISED FEBRUARY 2011
12-Bit ADC Built-In Reference
– Electrical Characteristics
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA
VCC
MIN
TYP MAX
UNIT
-40
°C to 85°C
2.4
2.5
2.6
REF2_5V = 1 (2.5 V)
3 V
Positive built-in
IVREF+max ≤ IVREF+ ≤ IVREF+min
150
°C
2.37
2.5
2.64
VREF+
reference voltage
V
-40
°C to 85°C
1.44
1.5
1.56
REF2_5V = 1 (1.5 V)
output
2.2 V/3 V
IVREF+max ≤ IVREF+ ≤ IVREF+min
150
°C
1.42
1.5
1.57
REF2_5V = 0,
2.2
IVREF+max ≤ IVREF+ ≤ IVREF+min
AVCC minimum
voltage, positive
REF2_5V = 1,
AVCC(min)
2.8
V
built-in reference
–0.5 mA ≤ IVREF+ ≤ IVREF+min
active
REF2_5V = 1,
2.9
–1 mA ≤ IVREF+ ≤ IVREF+min
2.2 V
0.01
–0.5
Load current out of
IVREF+
mA
VREF+ terminal
3 V
0.01
–1
IVREF+ = 500 μA ± 100 μA,
2.2 V
±2
Analog input voltage VAx 0.75 V,
Load current
3 V
±2
REF2_5V = 0
IL(VREF)+
(1)
regulation, VREF+
LSB
IVREF+ = 500 μA ± 100 μA,
terminal
Analog input voltage VAx 1.25 V,
3 V
±2
REF2_5V = 1
Load current
IVREF+ = 100 μA → 900 μA,
IDL(VREF)+
(2)
regulation, VREF+
CVREF+ = 5 μF, at 0.5 VREF+,
3 V
20
ns
terminal
Error of conversion result
≤ 1 LSB
Capacitance
REFON = 1,
CVREF+
2.2 V/3 V
5
10
F
at pin VREF+
(3)
0 mA
≤ IVREF+ ≤ IVREF+max
Temperature
IVREF+ is a constant in the range of
ppm/
°
TREF+
(1)
coefficient of built-in
2.2 V/3 V
±100
0 mA
≤ IVREF+ ≤ 1 mA
C
reference
Settling time of
internal reference
IVREF+ = 0.5 mA, CVREF+ = 10 μF,
tREFON
(1)
17
ms
voltage (4)
VREF+ = 1.5 V, VAVCC = 2.2 V
(See Figure 39)
(1)
Limits characterized
(2)
Limits verified by design
(3)
The internal buffer operational amplifier and the accuracy specifications require an external capacitor. All INL and DNL tests use two
capacitors between pins VREF+ and AVSS and VREF-/VeREF- and AVSS: 10 μF tantalum and 100 nF ceramic.
(4)
The condition is that the error in a conversion started after tREFON or tRefBuf is less than ±0.5 LSB.
Typical Characteristics
– ADC12
Figure 39. Typical Settling Time of Internal Reference tREFON vs External Capacitor on VREF+
2010–2011, Texas Instruments Incorporated
61
Product Folder Link(s): MSP430F2619S-HT
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