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| MSP43020X3 Datasheet, PDF (46/92 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER | |||
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MSP430F20x3
MSP430F20x2
MSP430F20x1
SLAS491H â AUGUST 2005 â REVISED AUGUST 2011
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
TA
VREF
Internal reference voltage
SD16REFON = 1,
SD16VMIDON = 0
VCC
MIN TYP MAX UNIT
3V
1.14 1.20 1.26 V
IREF
Reference supply current
SD16REFON = 1,
-40°C to 85°C
3V
SD16VMIDON = 0
105°C
3V
190 280
µA
295
TC
Temperature coefficient
SD16REFON = 1,
SD16VMIDON = 0
3V
18
50 ppm/°C
CREF
VREF load capacitance
SD16REFON = 1,
SD16VMIDON = 0(1)
100
nF
ILOAD
VREF(I) maximum load current
SD16REFON = 1,
SD16VMIDON = 0
3V
±200 nA
tON
Turn-on time
DC PSR
DC power supply rejection
ÎVREF/ÎVCC
SD16REFON = 0 â 1,
SD16VMIDON = 0,
CREF = 100 nF
SD16REFON = 1,
SD16VMIDON = 0,
VCC = 2.5 V to 3.6 V
3V
2.5 V to 3.6 V
5
ms
100
µV/V
(1) There is no capacitance required on VREF. 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
TA
VREF,BUF
Reference buffer output voltage
SD16REFON = 1,
SD16VMIDON = 1
VCC
MIN TYP
3V
1.2
IREF,BUF
Reference supply + reference
output buffer quiescent current
SD16REFON = 1,
SD16VMIDON = 1
-40°C to 85°C
3V
105°C
385
CREF(O)
ILOAD,Max
Required load capacitance on
VREF
Maximum load current on VREF
SD16REFON = 1,
SD16VMIDON = 1
SD16REFON = 1,
SD16VMIDON = 1
470
3V
Maximum voltage variation vs
load current
|ILOAD| = 0 to 1 mA
3V
-15
tON
Turn on time
SD16REFON = 0 â 1,
SD16VMIDON = 1,
CREF = 470 nF
3V
100
MAX UNIT
V
600
µA
660
nF
±1 mA
+15 mV
µs
SD16_A, External Reference Input (MSP430F20x3)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
VREF(I) Input voltage range
IREF(I) Input current
TEST CONDITIONS
SD16REFON = 0
SD16REFON = 0
VCC
MIN TYP
3V
1 1.25
3V
MAX
1.5
50
UNIT
V
nA
46
Copyright © 2005â2011, Texas Instruments Incorporated
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