Texas Instruments MSP430F5527, Manual

Page: 44 / 128

MSP430F5529, MSP430F5528, MSP430F5527, MSP430F5526
MSP430F5525, MSP430F5524, MSP430F5522, MSP430F5521
MSP430F5519, MSP430F5517, MSP430F5515, MSP430F5514, MSP430F5513
SLAS590M – MARCH 2009 – REVISED NOVEMBER 2015 www.ti.com
REF, Built-In Reference (continued)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
(1)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
REFVSEL = (0, 1, 2),
Load-current regulation, I
VREF+
= +10 µA, –1000 µA,
I
L(VREF+)
2500 µV/mA
VREF+ terminal
(5)
AV
CC
= AV
CC (min)
for each reference level,
REFVSEL = (0, 1, 2), REFON = REFOUT = 1
Capacitance at VREF+
C
VREF+
REFON = REFOUT = 1 20 100 pF
terminal
I
VREF+
= 0 A,
Temperature coefficient of ppm/
TC
REF+
REFVSEL = (0, 1, 2), REFON = 1, 30 50
built-in reference
(6)
°C
REFOUT = 0 or 1
AV
CC
= AV
CC (min)
to AV
CC(max)
,
Power supply rejection ratio T
A
= 25°C,
PSRR_DC 120 300 µV/V
(DC) REFVSEL = (0, 1, 2), REFON = 1,
REFOUT = 0 or 1
AV
CC
= AV
CC (min)
to AV
CC(max)
,
T
A
= 25°C,
Power supply rejection ratio
PSRR_AC f = 1 kHz,
Δ
Vpp = 100 mV, 6.4 mV/V
(AC)
REFVSEL = (0, 1, 2), REFON = 1,
REFOUT = 0 or 1
AV
CC
= AV
CC (min)
to AV
CC(max)
,
REFVSEL = (0, 1, 2), REFOUT = 0, 75
REFON = 0 → 1
Settling time of reference
t
SETTLE
µs
AV
CC
= AV
CC (min)
to AV
CC(max)
,
voltage
(7)
C
VREF
= C
VREF
(max),
75
REFVSEL = (0, 1, 2), REFOUT = 1,
REFON = 0
→ 1
(5) Contribution only due to the reference and buffer including package. This does not include resistance due to PCB trace.
(6) Calculated using the box method: (MAX(–40°C to 85°C) – MIN(–40°C to 85°C)) / MIN(–40°C to 85°C)/(85°C – (–40°C)).
(7) The condition is that the error in a conversion started after t
REFON
is less than ±0.5 LSB. The settling time depends on the external
capacitive load when REFOUT = 1.
44 Specifications
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