MSP430F563X Datasheet, PDF (58/101 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F563x
SLAS650A – JUNE 2010 – REVISED JULY 2010
www.ti.com
12-Bit ADC, Timing Parameters (continued)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
t_CONVERT Conversion time
TEST CONDITIONS
REFON = 0, Internal oscillator,
f_ADC12OSC = 4.2 MHz to 5.4 MHz
External f_ADC12CLK from ACLK, MCLK or SMCLK,
ADC12SSEL ≠ 0
V_CC
2.2 V/3 V
MIN TYP MAX UNIT
2.4
3.1
µs
(2)
t_ADC12ON
Turn on settling time of
the ADC
See ⁽³⁾
100 ns
t_Sample
Sampling time
R_S = 400 Ω, R_I = 1000 Ω, C_I = 30 pF,
t = [R_S + R_I] × C_I ⁽⁴⁾
2.2 V/3 V 1000
ns
(2) 13 × ADC12DIV × 1/f_ADC12CLK
(3) The condition is that the error in a conversion started after t_ADC12ON is less than ±0.5 LSB. The reference and input signal are already
settled.
(4) Approximately ten Tau (t) are needed to get an error of less than ±0.5 LSB:
t_Sample = ln(2ⁿ⁺¹) x (R_S + R_I) × C_I + 800 ns, where n = ADC resolution = 12, R_S = external source resistance
12-Bit ADC, Linearity Parameters
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
1.4 V ≤ (V_eREF+ – V_REF–/V_eREF–)min ≤ 1.6 V
1.6 V < (V_eREF+ – V_REF–/V_eREF–)min ≤ V_AVCC
(V_eREF+ – V_REF–/V_eREF–)min ≤ (V_eREF+ – V_REF–/V_eREF–),
C_VREF+ = 20 pF
(V_eREF+ – V_REF–/V_eREF–)min ≤ (V_eREF+ – V_REF–/V_eREF–),
Internal impedance of source R_S < 100 Ω, C_VREF+ = 20 pF
(V_eREF+ – V_REF–/V_eREF–)min ≤ (V_eREF+ – V_REF–/V_eREF–),
C_VREF+ = 20 pF
(V_eREF+ – V_REF–/V_eREF–)min ≤ (V_eREF+ – V_REF–/V_eREF–),
C_VREF+ = 20 pF
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
±1.1
±2
MAX
±2
±1.7
UNIT
LSB
±1 LSB
±3.5 LSB
±2 LSB
±5 LSB
12-Bit ADC, Temperature Sensor and Built-In V_MID(1)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
V_SENSOR
PARAMETER
See ⁽²⁾
TEST CONDITIONS
ADC12ON = 1, INCH = 0Ah,
T_A = 0°C
V_CC
2.2 V
3V
MIN TYP
680
680
TC_SENSOR
2.2 V
2.25
ADC12ON = 1, INCH = 0Ah
3V
2.25
t_{SENSOR(sample)}
Sample time required if
channel 10 is selected⁽³⁾
ADC12ON = 1, INCH = 0Ah,
2.2 V
30
Error of conversion result ≤ 1 LSB
3V
30
V_MID
AV_CC divider at channel 11
ADC12ON = 1, INCH = 0Bh,
V_MID is ~0.5 × V_AVCC
2.2 V
3V
1.06 1.1
1.46 1.5
t_VMID(sample)
Sample time required if
channel 11 is selected⁽⁴⁾
ADC12ON = 1, INCH = 0Bh,
Error of conversion result ≤ 1 LSB
2.2 V/3 V 1000
MAX UNIT
mV
±3%
mV/°C
±3%
µs
1.14
V
1.54
ns
(1) The temperature sensor is provided by the REF module. Please refer to the REF module parametric, I_REF+, regarding the current
consumption of the temperature sensor.
(2) 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. The TLV structure contains calibration values for 30°C ± 3°C and 85°C ± 3°C for each of the available
reference voltage levels. The sensor voltage can be computed as V_SENSE = TC_SENSOR * (Temperature,°C) + V_SENSOR, where TC_SENSOR
and V_SENSOR can be computed from the calibration values for higher accuracy. See also the MSP430x5xx Family User's Guide
(SLAU208).
(3) The typical equivalent impedance of the sensor is 51 kΩ. The sample time required includes the sensor-on time t_SENSOR(on).
(4) The on-time t_VMID(on) is included in the sampling time t_VMID(sample); no additional on time is needed.
58
Submit Documentation Feedback
Copyright © 2010, Texas Instruments Incorporated