MSP430F5310 Datasheet, PDF (65/106 Pages) Texas Instruments – MSP430F5310 and MSP430F530x Mixed-Signal Microcontrollers

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MSP430F5310, MSP430F5309
MSP430F5308, MSP430F5304
SLAS677E – SEPTEMBER 2010 – REVISED NOVEMBER 2013
REF, Built-In Reference
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) ⁽¹⁾
PARAMETER
TEST CONDITIONS
REFVSEL = {2} for 2.5 V,
REFON = 1
V_CC
MIN TYP MAX UNIT
3V
2.51 ±1.5%
V_REF+
Positive built-in reference
voltage
REFVSEL = {1} for 2.0 V,
REFON = 1
3V
1.99 ±1.5% V
REFVSEL = {0} for 1.5 V,
REFON = 1
2.2 V, 3 V
1.5 ±1.5%
AV_CC(min)
AVCC minimum voltage,
Positive built-in reference
active
REFVSEL = {0} for 1.5 V
REFVSEL = {1} for 2.0 V
REFVSEL = {2} for 2.5 V
2.2
2.2
V
2.7
f_ADC10CLK = 5.0 MHz,
REFON = 1, REFBURST = 0,
REFVSEL = {2} for 2.5 V
3V
18
24 µA
I_REF+
Operating supply current
into AVCC terminal ⁽²⁾
f_ADC10CLK = 5.0 MHz,
REFON = 1, REFBURST = 0,
REFVSEL = {1} for 2.0 V
3V
15.5
21 µA
f_ADC10CLK = 5.0 MHz,
REFON = 1, REFBURST = 0,
REFVSEL = {0} for 1.5V
3V
13.5
21 µA
TC_REF+
Temperature coefficient of I_VREF+ = 0 A,
built-in reference ⁽³⁾
REFVSEL = (0, 1, 2}, REFON = 1
30
50
ppm/
°C
I_SENSOR
Operating supply current
into AVCC terminal ⁽⁴⁾
REFON = 0, INCH = 0Ah,
ADC10ON = N A, T_A = 30°C
2.2 V
3V
20
22
µA
20
22
V_SENSOR
See ⁽⁵⁾
ADC10ON = 1, INCH = 0Ah,
T_A = 30°C
2.2 V
3V
770
mV
770
V_MID
AVCC divider at channel 11
ADC10ON = 1, INCH = 0Bh,
V_MID is approximately 0.5 × V_AVCC
2.2 V
3V
1.06 1.1 1.14
V
1.46 1.5 1.54
t_{SENSOR(sample)}
Sample time required if
channel 10 is selected ⁽⁶⁾
ADC10ON = 1, INCH = 0Ah,
Error of conversion result ≤ 1 LSB
30
µs
t_VMID(sample)
Sample time required if
channel 11 is selected ⁽⁷⁾
ADC10ON = 1, INCH = 0Bh,
Error of conversion result ≤ 1 LSB
1
µs
PSRR_DC
Power supply rejection ratio
(dc)
AV_CC = AV_{CC (min)} - AV_CC(max),
T_A = 25°C,
REFVSEL = {0, 1, 2}, REFON = 1
120
µV/V
PSRR_AC
Power supply rejection ratio
(ac)
AV_CC = AV_{CC (min)} - AV_CC(max),
T_A = 25 °C, f = 1 kHz, ΔVpp = 100 mV,
REFVSEL = {0, 1, 2}, REFON = 1
6.4
mV/V
t_SETTLE
Settling time of reference
voltage ⁽⁸⁾
AV_CC = AV_{CC (min)} - AV_CC(max),
REFVSEL = {0, 1, 2}, REFON = 0 → 1
75
µs
(1) The leakage current is defined in the leakage current table with P6.x/Ax parameter.
(2) The internal reference current is supplied via terminal AVCC. Consumption is independent of the ADC10ON control bit, unless a
conversion is active. The REFON bit enables to settle the built-in reference before starting an A/D conversion.
(3) Calculated using the box method: (MAX(-40 to 85°C) – MIN(-40 to 85°C)) / MIN(-40 to 85°C)/(85°C – (–40°C)).
(4) The sensor current I_SENSOR is consumed if (ADC10ON = 1 and REFON = 1) or (ADC10ON = 1 and INCH = 0Ah and sample signal is
high). When REFON = 1, I_SENSOR is already included in I_REF+.
(5) The temperature sensor offset can be as much as ±20°C. A single-point calibration is recommended in order to minimize the offset error
of the built-in temperature sensor.
(6) The typical equivalent impedance of the sensor is 51 kΩ. The sample time required includes the sensor-on time t_SENSOR(on).
(7) The on-time t_VMID(on) is included in the sampling time t_VMID(sample); no additional on time is needed.
(8) The condition is that the error in a conversion started after t_REFON is less than ±0.5 LSB.
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