Datasheet

MSP430F471x3, MSP430F471x6, MSP430F471x7
MIXED SIGNAL MICROCONTROLLER
SLAS626C -- OCTOBER 2008 -- REVISED MARCH 2011
57
POST OFFICE BOX 655303  DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
SD16_A, built-in voltage reference
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
V
REF
Internal reference
voltage
SD16REFON = 1, SD16VMIDON = 0 3V 1.14 1.20 1.26 V
I
REF
Reference supply
current
SD16REFON = 1, SD16VMIDON = 0 3V 175 260 A
TC Temperature coefficient SD16REFON = 1, SD16VMIDON = 0 (see Note 1) 3V 18 50 ppm/C
C
REF
V
REF
load capacitance SD16REFON = 1, SD16VMIDON = 0 (see Note 2) 100 nF
I
LOAD
V
REF(I)
maximum load
current
SD16REFON = 1, SD16VMIDON = 0 3V 200 nA
t
ON
Turn-on time
SD16REFON = 0-->1, SD16VMIDON = 0,
C
REF
= 100nF
3V 5 ms
DC PSR
DC power supply
rejection V
REF
/V
CC
SD16REFON = 1, SD16VMIDON = 0,
V
CC
= 2.5 V to 3.6 V
100 uV/V
NOTES: 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 V
REF
. However, a capacitance of at least 100 nF is recommended to reduce any reference
voltage noise.
SD16_A, reference output buffer
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
V
REF,BUF
Reference buffer output
voltage
SD16REFON = 1, SD16VMIDON = 1 3V 1.2 V
I
REF,BUF
Reference supply +
reference output buffer
quiescent current
SD16REFON = 1, SD16VMIDON = 1 3V 385 600 A
C
REF(O)
Required load
capacitance on V
REF
SD16REFON = 1, SD16VMIDON = 1 470 nF
I
LOAD,Max
Maximum load current
on V
REF
SD16REFON = 1, SD16VMIDON = 1 3V 1 mA
Maximum voltage
variation vs load current
|I
LOAD
|=0to1mA 3V -- 1 5 +15 mV
t
ON
Turn-on time
SD16REFON = 0-->1, SD16VMIDON = 0-->1,
C
REF
= 470nF
3V 100 s
SD16_A, external reference input
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
V
REF(I)
Input voltage range SD16REFON = 0 3V 1.0 1.25 1.5 V
I
REF(I)
Input current SD16REFON = 0 3V 50 nA