MSP430X22X2_10 Datasheet, PDF (49/87 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x22x2, MSP430x22x4
MIXED SIGNAL MICROCONTROLLER
SLAS504D -- JULY 2006 -- REVISED MARCH 2010
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
10-bit ADC, timing parameters
PARAMETER
TEST CONDITIONS
V_CC
MIN TYP MAX UNIT
f_ADC10CLK
ADC10 input clock frequency
For specified
performance of
ADC10 linearity
parameters
ADC10SR=0
0.45
2.2 V/3 V
ADC10SR=1
0.45
6.3
MHz
1.5
f_ADC10OSC
ADC10 built-in oscillator frequency
ADC10DIVx = 0, ADC10SSELx = 0,
f_ADC10CLK = f_ADC10OSC
2.2 V/3 V
3.7
6.3 MHz
t_CONVERT
Conversion time
ADC10 built-in oscillator,
ADC10SSELx = 0,
f_ADC10CLK = f_ADC10OSC
f_ADC10CLK from ACLK, MCLK or
SMCLK, ADC10SSELx ≠ 0
2.2 V/3 V
2.06
3.51
13×
µs
ADC10DIV×
1/f_ADC10CLK
t_ADC10ON
Turn on settling time of the ADC
(see Note 1)
100 ns
NOTES: 1. The condition is that the error in a conversion started after t_ADC10ON is less than ±0.5 LSB. The reference and input signal are already
settled.
10-bit ADC, linearity parameters
PARAMETER
E_I
Integral linearity error
E_D
Differential linearity error
E_O
Offset error
TEST CONDITIONS
Source impedance R_S < 100 Ω,
V_CC
MIN TYP MAX UNIT
2.2 V/3 V
±1 LSB
2.2 V/3 V
±1 LSB
2.2 V/3 V
±1 LSB
SREFx = 010, unbuffered external
reference, V_eREF+ = 1.5 V
2.2 V
±1.1
±2
SREFx = 010, unbuffered external
reference, V_eREF+ = 2.5 V
3V
±1.1
±2
E_G
Gain error
SREFx = 011, buffered external
reference (see Note 1),
V_eREF+ = 1.5 V
2.2 V
±1.1
±4 ^LSB
SREFx = 011, buffered external
reference (see Note 1),
3V
V_eREF+ = 2.5 V
±1.1
±3
SREFx = 010, unbuffered external
reference, V_eREF+ = 1.5 V
2.2 V
±2
±5
SREFx = 010, unbuffered external
reference, V_eREF+ = 2.5 V
3V
±2
±5
E_T
Total unadjusted error
SREFx = 011, buffered external
reference (see Note 1),
V_eREF+ = 1.5 V
2.2 V
LSB
±2
±7
SREFx = 011, buffered external
reference (see Note 1),
3V
V_eREF+ = 2.5 V
±2
±6
NOTES: 1. The reference buffer offset adds to the gain and total unadjusted error.
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