參數資料
型號: MSP430F6630IPZ
廠商: TEXAS INSTRUMENTS INC
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PQFP100
封裝: PLASTIC, QFP-100
文件頁數: 68/105頁
文件大?。?/td> 1077K
代理商: MSP430F6630IPZ
PRODUCTPREVIEW
MSP430F663x
www.ti.com
SLAS566A – JUNE 2010 – REVISED JULY 2010
REF, Built-In Reference
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
(1)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX UNIT
REFVSEL = {2} for 2.5 V
REFON = REFOUT = 1
3 V
2.5
±1%
IVREF+ = 0 A
Positive built-in
REFVSEL = {1} for 2 V
VREF+
reference voltage
REFON = REFOUT = 1
3 V
2.0
±1%
V
output
IVREF+ = 0 A
REFVSEL = {0} for 1.5 V
2.2 V / 3
REFON = REFOUT = 1
1.5
±1%
V
IVREF+ = 0 A
REFVSEL = {0} for 1.5 V
2.2
AVCC minimum voltage,
AVCC(min) Positive built-in
REFVSEL = {1} for 2 V
2.3
V
reference active
REFVSEL = {2} for 2.5 V
2.8
fADC12CLK = 5 MHz,
3V
TBD
Operating supply
REFON = 1, REFOUT = 0, REFBURST = 0
IREF+
current into AVCC
A
fADC12CLK = 5 MHZ,
terminal (2) (3)
3V
TBD
REFON = 1, REFOUT = 1, REFBURST = 0
REFVSEL = {0, 1, 2}
Load-current
IVREF+ = +10 A / -1000 A
V/m
IL(VREF+)
regulation, VREF+
TBD
AVCC = AVCC(min) for each reference level. REFVSEL = {0, 1,
A
terminal(4)
2}, REFON = REFOUT = 1
Capacitance at VREF+
REFON = REFOUT = 1, (5)
CVREF+
2.2 V/3 V
20
100
pF
terminal
0 mA
≤ IVREF+ ≤ IVREF+(max)
Temperature coefficient IVREF+ is a constant in the range of
TCREF+
REFOUT = 0
2.2 V/3 V
TBD
of built-in reference(6)
0 mA
≤ IVREF+ ≤ –1 mA
ppm/
AVCC = AVCC(min) - AVCC(max)
°C
PSRR_D
Power Supply
TA = 25°C
TBD
TBD V/V
C
Rejection Ratio (DC)
REFVSEL = {0, 1, 2}, REFON = 1, REFOUT = 0 or 1
AVCC = AVCC(min) - AVCC(max)
PSRR_A
Power Supply
mV/
TA = 25°C
TBD
C
Rejection Ratio (AC)
V
REFVSEL = {0, 1, 2}, REFON = 1, REFOUT = 0 or 1
AVCC = AVCC(min) - AVCC(max)
75
REFVSEL = {0, 1, 2}, REFOUT = 0, REFON = 0
→ 1
Settling time of
tSETTLE
s
AVCC = AVCC(min) - AVCC(max)
reference voltage(7)
CVREF = CVREF(max)
75
REFVSEL = {0, 1, 2}, REFOUT = 1, REFON = 0
→ 1
(1)
The reference is supplied to the ADC by the REF module and is buffered locally inside the ADC. The ADC uses two internal buffers, one
smaller and one larger for driving the VREF+ terminal. When REFOUT = 1, the reference is available at the VREF+ terminal, as well as,
used as the reference for the conversion and utilizes the larger buffer. When REFOUT = 0, the reference is only used as the reference
for the conversion and utilizes the smaller buffer.
(2)
The internal reference current is supplied via terminal AVCC. Consumption is independent of the ADC12ON control bit, unless a
conversion is active. REFOUT = 0 represents the current contribution of the smaller buffer. REFOUT = 1 represents the current
contribution of the larger buffer without external load.
(3)
The temperature sensor is provided by the REF module. Its current is supplied via terminal AVCC and is equivalent to IREF+ with REFON
= 1 and REFOUT = 0.
(4)
Contribution only due to the reference and buffer including package. This does not include resistance due to PCB trace, etc.
(5)
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).
(6)
Calculated using the box method: (MAX(-40 to 85°C) – MIN(-40 to 85°C)) / MIN(-40 to 85°C)/(85°C – (–40°C)).
(7)
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 when REFOUT = 1.
Copyright 2010, Texas Instruments Incorporated
65
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