參數(shù)資料
型號: MSP430AFE233IPW
廠商: TEXAS INSTRUMENTS INC
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, RISC MICROCONTROLLER, PDSO24
封裝: GREEN, PLASTIC, TSSOP-24
文件頁數(shù): 24/47頁
文件大小: 900K
代理商: MSP430AFE233IPW
MSP430AFE2x3
MSP430AFE2x2
MSP430AFE2x1
SLAS701A
– NOVEMBER 2010 – REVISED MARCH 2011
SD24_A, Temperature Sensor and Built-In VCC Sense
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
TCSensor
Sensor temperature coefficient
1.18
1.32
1.46 mV/
°C
VOffset,sensor
Sensor offset voltage
-100
100
mV
Temperature sensor voltage at TA = 85°C
420
475
515
VSensor
Sensor output voltage(1)(2)
3 V
mV
Temperature sensor voltage at TA = 30°C
350
402
442
fSD24 = 1 MHz, SD24OSRx = 256,
VCC/1
VCC,Sense
VCC divider at input 5
V
SD24REFON = 1
1
Source resistance of VCC
RSource,VCC
20
k
Ω
divider at input 5
(1)
The following formula can be used to calculate the temperature sensor output voltage:
VSensor,typ = TCSensor (273 + T [°C]) + VOffset,sensor [mV]
(2)
Results based on characterization and/or production test, not TCSensor or VOffset,sensor. Measured with fSD24 = 1 MHz, SD24OSRx = 256,
SD24REFON = 1.
SD24_A, Built-In Voltage Reference
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
VREF
Internal reference voltage
SD24REFON = 1, SD24VMIDON = 0
3 V
1.14
1.2
1.26
V
IREF
Reference supply current
SD24REFON = 1, SD24VMIDON = 0
3 V
200
320
A
TC
Temperature coefficient
SD24REFON = 1, SD24VMIDON = 0(1)
3 V
18
50
ppm/
°C
CREF
VREF load capacitance
SD24REFON = 1, SD24VMIDON = 0(2)
100
nF
ILOAD
VREF(I) maximum load current
SD24REFON = 1, SD24VMIDON = 0
3 V
±200
nA
SD24REFON = 0
→1, SD24VMIDON = 0,
tON
Turn-on time
3 V
5
ms
CREF = 100nF
DC power supply rejection
SD24REFON = 1, SD24VMIDON = 0,
DC PSR
100
V/V
ΔVREF/ΔVCC
VCC = 2.5 V to 3.6 V
(1)
Calculated using the box method: (MAX(-40...85
°C) - MIN(-40...85°C)) / MIN(-40...85°C) / (85°C - (-40°C))
(2)
There is no capacitance required on VREF. However, a capacitance of at least 100 nF is recommended to reduce any reference voltage
noise.
SD24_A, Reference Output Buffer
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
Reference buffer output
VREF,BUF
SD24REFON = 1, SD24VMIDON = 1
3 V
1.2
V
voltage
Reference supply + reference
IREF,BUF
output buffer quiescent
SD24REFON = 1, SD24VMIDON = 1
3 V
430
650
A
current
Required load capacitance
CREF(O)
SD24REFON = 1, SD24VMIDON = 1
470
nF
on VREF
Maximum load current on
ILOAD,Max
SD24REFON = 1, SD24VMIDON = 1
3 V
±1
mA
VREF
Maximum voltage variation vs
|ILOAD| = 0 to 1 mA
3 V
-15
+15
mV
load current
SD24REFON = 0
→1, SD24VMIDON = 0→1,
tON
Turn-on time
3 V
100
s
CREF = 470 nF
30
Copyright
2010–2011, Texas Instruments Incorporated
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