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| MSP430X47X3_07 Datasheet, PDF (50/76 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER | |||
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MSP430x47x3, MSP430x47x4
MIXED SIGNAL MICROCONTROLLER
SLAS545A â MAY 2007 â REVISED DECEMBER 2007
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
SD16_A, built-in voltage reference
VREF
PARAMETER
Internal reference
voltage
TEST CONDITIONS
SD16REFON = 1, SD16VMIDON = 0
VCC MIN TYP MAX UNIT
3 V 1.14 1.20 1.26 V
IREF
Reference supply
current
SD16REFON = 1, SD16VMIDON = 0
3V
175 260 μA
TC
Temperature coefficient SD16REFON = 1, SD16VMIDON = 0 (see Note 1)
3V
18
50 ppm/K
CREF
ILOAD
VREF load capacitance SD16REFON = 1, SD16VMIDON = 0 (see Note 2)
VREF(I) maximum load
current
SD16REFON = 1; SD16VMIDON = 0
3V
100
nF
±200 nA
tON
Turn on time
SD16REFON = 0â>1; SD16VMIDON = 0;
CREF = 100nF
3V
5
ms
DC PSR
DC Power Supply
Rejection ÎVREF/ÎVCC
SD16REFON = 1; SD16VMIDON = 0;
VCC = 2.5V - 3.6V
100
uV/V
NOTES: 1. Calculated using the box method: (MAX(-40...85°C) â MIN(-40...85°C)) / MIN(â40...85°C) / (85°C â (-40°C))
2. There is no capacitance required on VREF. However, a capacitance of at least 100nF is recommended to reduce any reference
voltage noise.
SD16_A, reference output buffer
PARAMETER
TEST CONDITIONS
VREF,BUF
Reference buffer output
voltage
SD16REFON = 1, SD16VMIDON = 1
IREF,BUF
Reference Supply +
Reference output buffer
quiescent current
SD16REFON = 1, SD16VMIDON = 1
CREF(O)
ILOAD,Max
Required load
capacitance on VREF
Maximum load current
on VREF
Maximum voltage varia-
tion vs. load current
SD16REFON = 1, SD16VMIDON = 1
SD16REFON = 1, SD16VMIDON = 1
|ILOAD| = 0 to 1mA
tON
Turn on time
SD16REFON = 0â>1; SD16VMIDON = 0â>1;
CREF = 470nF
VCC MIN TYP MAX UNIT
3V
1.2
V
3V
385 600 μA
470
nF
3V
±1 mA
3 V â15
+15 mV
3V
100
μs
SD16_A, external reference input
PARAMETER
TEST CONDITIONS
VREF(I)
IREF(I)
Input voltage range
Input current
SD16REFON = 0
SD16REFON = 0
VCC MIN TYP MAX UNIT
3V
1.0 1.25 1.5 V
3V
50 nA
50
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