參數(shù)資料
型號(hào)： MSP430F5437IPNR
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 25 MHz, RISC MICROCONTROLLER, PQFP80
封裝： GREEN, PLASTIC, LQFP-80
文件頁(yè)數(shù)： 57/99頁(yè)
文件大?。?/td> 985K
代理商： MSP430F5437IPNR
MSP430F543x, MSP430F541x
SLAS612C – AUGUST 2009 – REVISED MARCH 2010
www.ti.com
12-Bit ADC, Built-In Reference
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
REF2_5V = 1 for 2.5 V,
3 V
2.35
2.45
2.53
IVREF+(max) ≤ IVREF+ ≤ IVREF+(min)
Positive built-in reference
VREF+
V
voltage output
REF2_5V = 0 for 1.5 V,
2.2 V/3 V
1.41
1.47
1.53
IVREF+(max) ≤ IVREF+ ≤ IVREF+(min)
AVCC minimum voltage,
REF2_5V = 0
2.2
AVCC(min)
Positive built-in reference
V
REF2_5V = 1
2.8
active
2.2 V
–1
Load current out of VREF+
IVREF+
mA
terminal
3 V
–1
2.2 V
±2
IVREF+ = +10 A/–1000 A,
Analog input voltage ~0.75 V, REF2_5V = 0
Load-current regulation,
3 V
±2
IL(VREF)+
LSB
VREF+ terminal
IVREF+ = +10 A/–1000 A,
3 V
±2
Analog input voltage ~1.25 V, REF2_5V = 1
Capacitance at VREF+
CVREF+
REFON = REFOUT = 1(1)
2.2 V/3 V
20
100
pF
terminal
REF2_5V = 0,
IVREF+ is a constant in the range of
2.2 V/3 V
30
0 mA
≤ IVREF+ ≤ –1 mA
Temperature coefficient of
ppm/
TREF+
built-in reference(2)
°C
REF2_5V = 1,
IVREF+ is a constant in the range of
3 V
30
0 mA
≤ IVREF+ ≤ –1 mA
VREF+ = 1.5 V, VAVCC = 2.2 V,
20
REFOUT = 0, REFON = 0
→ 1
VREF+ = 2.5 V, VAVCC = 2.8 V,
20
REFOUT = 0, REFON = 0
→ 1
Settling time of reference
VREF+ = 1.5 V, VAVCC = 2.2 V,
tSETTLE
s
voltage(3)
CVREF = CVREF(max)
35
REFOUT = 1, REFON = 0
→ 1
VREF+ = 2.5 V, VAVCC = 2.8 V,
CVREF = CVREF(max)
35
REFOUT = 1, REFON = 0
→ 1
(1)
Two decoupling capacitors, 10F and 100nF, should be connected to VREF to decouple the dynamic current required for an external
reference source if it is used for the ADC12_A. See also the MSP430x5xx Family User's Guide (SLAU208).
(2)
Calculated using the box method: (MAX(-40 to 85°C) – MIN(-40 to 85°C)) / MIN(-40 to 85°C)/(85°C – (–40°C))
(3)
The condition is that the error in a conversion started after tREFON is less than ±0.5 LSB. The settling time depends on the external
capacitive load.
60
Copyright 2009–2010, Texas Instruments Incorporated
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