MSP430F5522 Datasheet, PDF (74/123 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F5529, MSP430F5528, MSP430F5527, MSP430F5526
MSP430F5525, MSP430F5524, MSP430F5522, MSP430F5521
MSP430F5519, MSP430F5517, MSP430F5515, MSP430F5514, MSP430F5513
SLAS590L – MARCH 2009 – REVISED MAY 2013
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REF, Built-In Reference (continued)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)⁽¹⁾
PARAMETER
I_L(VREF+)
Load-current regulation,
VREF+ terminal⁽⁵⁾
TEST CONDITIONS
V_CC
REFVSEL = (0, 1, 2)
I_VREF+ = +10 µA, –1000 µA
AV_CC = AV_{CC (min)} for each reference level,
REFVSEL = (0, 1, 2), REFON = REFOUT = 1
MIN TYP
C_VREF+
Capacitance at VREF+
terminal
REFON = REFOUT = 1
20
TC_REF+
Temperature coefficient of
built-in reference⁽⁶⁾
I_VREF+ = 0 A,
REFVSEL = (0, 1, 2), REFON = 1,
REFOUT = 0 or 1
30
AV_CC = AV_{CC (min)} - AV_CC(max),
PSRR_DC
Power supply rejection ratio
(DC)
T_A = 25°C,
REFVSEL = (0, 1, 2), REFON = 1,
120
REFOUT = 0 or 1
AV_CC = AV_{CC (min)} - AV_CC(max),
PSRR_AC
Power supply rejection ratio
(AC)
T_A = 25°C,
f = 1 kHz, ΔVpp = 100 mV,
REFVSEL = (0, 1, 2), REFON = 1,
6.4
REFOUT = 0 or 1
AV_CC = AV_{CC (min)} - AV_CC(max),
REFVSEL = (0, 1, 2), REFOUT = 0,
75
REFON = 0 → 1
t_SETTLE
Settling time of reference
voltage ⁽⁷⁾
AV_CC = AV_{CC (min)} - AV_CC(max),
C_VREF = C_VREF(max),
REFVSEL = (0, 1, 2), REFOUT = 1,
75
REFON = 0 → 1
MAX UNIT
2500 µV/mA
100 pF
50
ppm/
°C
300 µV/V
mV/V
µs
(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 to 85°C) – MIN(-40 to 85°C)) / MIN(-40 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.
74
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