MSP43020X3 Datasheet, PDF (42/92 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F20x3
MSP430F20x2
MSP430F20x1
SLAS491H – AUGUST 2005 – REVISED AUGUST 2011
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10-Bit ADC, Linearity Parameters (MSP430F20x2)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
E_I
Integral linearity error
E_D
Differential linearity error
E_O
Offset error
E_G
Gain error
E_T
Total unadjusted error
TEST CONDITIONS
Source impedance R_S < 100 Ω
V_CC
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
MIN TYP
±1.1
±2
MAX
±1
±1
±1
±2
±5
UNIT
LSB
LSB
LSB
LSB
LSB
10-Bit ADC, Temperature Sensor and Built-In V_MID (MSP430F20x2)⁽¹⁾
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
I_SENSOR
TC_SENSOR
V_{Offset,Sensor}
PARAMETER
Temperature sensor supply
current ⁽¹⁾
Sensor offset voltage
V_SENSOR
Sensor output voltage⁽³⁾
t_{SENSOR(sample)}
Sample time required if
channel 10 is selected⁽⁴⁾
TEST CONDITIONS
REFON = 0, INCHx = 0Ah,
T_A = 25°C
ADC10ON = 1, INCHx = 0Ah⁽²⁾
ADC10ON = 1, INCHx = 0Ah⁽²⁾
Temperature sensor voltage at
T_A = 105°C (T version only)
Temperature sensor voltage at
T_A = 85°C
Temperature sensor voltage at
T_A = 25°C
Temperature sensor voltage at
T_A = 0°C
ADC10ON = 1, INCHx = 0Ah,
Error of conversion result ≤ 1 LSB
V_CC
2.2 V
3V
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
MIN TYP
40
60
3.44 3.55
-100
1265 1365
1195 1295
985 1085
895 995
30
I_VMID
Current into divider at
channel 11⁽⁴⁾
ADC10ON = 1, INCHx = 0Bh
2.2 V
3V
V_MID
V_CC divider at channel 11
ADC10ON = 1, INCHx = 0Bh,
V_MID ≈ 0.5 × V_CC
2.2 V
3V
1.06 1.1
1.46 1.5
t_VMID(sample)
Sample time required if
channel 11 is selected⁽⁵⁾
ADC10ON = 1, INCHx = 0Bh,
Error of conversion result ≤ 1 LSB
2.2 V
3V
1400
1220
MAX UNIT
120
µA
160
3.66 mV/°C
100 mV
1465
1395
mV
1185
1095
µs
N/A
µA
N/A
1.14
V
1.54
ns
(1) 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 included in I_REF+.When REFON = 0, I_SENSOR applies during conversion of the temperature sensor
input (INCH = 0Ah).
(2) The following formula can be used to calculate the temperature sensor output voltage:
V_Sensor,typ = TC_Sensor ( 273 + T [°C] ) + V_{Offset,sensor} [mV] or
V_Sensor,typ = TC_Sensor T [°C] + V_Sensor(T_A = 0°C) [mV]
(3) Results based on characterization and/or production test, not TC_Sensor or V_{Offset,sensor}.
(4) No additional current is needed. The V_MID is used during sampling.
(5) The on time, t_VMID(on), is included in the sampling time, t_VMID(sample); no additional on time is needed.
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