Datasheet

MSP430F20x3
MSP430F20x2
MSP430F20x1
SLAS491I –AUGUST 2005–REVISED DECEMBER 2012 www.ti.com
SD16_A, Built-In Voltage Reference (MSP430F20x3)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS T
A
V
CC
MIN TYP MAX UNIT
SD16REFON = 1,
V
REF
Internal reference voltage 3 V 1.14 1.20 1.26 V
SD16VMIDON = 0
-40°C to 85°C 3 V 190 280
SD16REFON = 1,
I
REF
Reference supply current µA
SD16VMIDON = 0
105°C 3 V 295
SD16REFON = 1,
TC Temperature coefficient 3 V 18 50 ppm/°C
SD16VMIDON = 0
SD16REFON = 1,
C
REF
V
REF
load capacitance 100 nF
SD16VMIDON = 0
(1)
SD16REFON = 1,
I
LOAD
V
REF(I)
maximum load current 3 V ±200 nA
SD16VMIDON = 0
SD16REFON = 0 → 1,
t
ON
Turn-on time SD16VMIDON = 0, 3 V 5 ms
C
REF
= 100 nF
SD16REFON = 1,
DC power supply rejection
DC PSR SD16VMIDON = 0, 2.5 V to 3.6 V 100 µV/V
ΔV
REF
/ΔV
CC
V
CC
= 2.5 V to 3.6 V
(1) 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 (MSP430F20x3)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS T
A
V
CC
MIN TYP MAX UNIT
SD16REFON = 1,
V
REF,BUF
Reference buffer output voltage 3 V 1.2 V
SD16VMIDON = 1
-40°C to 85°C 385 600
Reference supply + reference SD16REFON = 1,
I
REF,BUF
3 V µA
output buffer quiescent current SD16VMIDON = 1
105°C 660
Required load capacitance on SD16REFON = 1,
C
REF(O)
470 nF
V
REF
SD16VMIDON = 1
SD16REFON = 1,
I
LOAD,Max
Maximum load current on V
REF
3 V ±1 mA
SD16VMIDON = 1
Maximum voltage variation vs
|I
LOAD
| = 0 to 1 mA 3 V -15 +15 mV
load current
SD16REFON = 0 → 1,
t
ON
Turn on time SD16VMIDON = 1, 3 V 100 µs
C
REF
= 470 nF
SD16_A, External Reference Input (MSP430F20x3)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
V
REF(I)
Input voltage range SD16REFON = 0 3 V 1 1.25 1.5 V
I
REF(I)
Input current SD16REFON = 0 3 V 50 nA
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