MSP430x22x2, MSP430x22x4
MIXED SIGNAL MICROCONTROLLER
SLAS504A 鈭?JULY 2006 鈭?REVISED DECEMBER 2006
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
For specified
performance of
ADC10 linearity
parameters
ADC10SR=0
ADC10SR=1
VCC
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
MIN
0.45
0.45
3.7
TYP
MAX
6.3
MHz
1.5
6.3
MHz
碌s
UNIT
fADC10CLK
ADC10 input clock frequency
fADC10OSC
ADC10 built-in oscillator frequency
ADC10DIVx=0, ADC10SSELx = 0
fADC10CLK = fADC10OSC
ADC10 built-in oscillator,
ADC10SSELx = 0
fADC10CLK = fADC10OSC
fADC10CLK from ACLK, MCLK or
SMCLK: ADC10SSELx
鈮?/div>
0
2.2 V/3 V
2.06
13脳
ADC10DIV脳
1/fADC10CLK
3.51
tCONVERT
Conversion time
碌s
tADC10ON
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 tADC10ON is less than
鹵0.5
LSB. The reference and input signal are already
settled.
10-bit ADC, linearity parameters
PARAMETER
EI
ED
EO
Integral linearity error
Differential linearity error
Offset error
Source impedance RS < 100
鈩?
SREFx = 010; un-buffered external
reference; VeREF+ = 1.5V
SREFx = 010; un-buffered external
reference; VeREF+ = 2.5V
EG
Gain error
SREFx = 011; buffered external
reference (see Note 1);
VeREF+ = 1.5V
SREFx = 011; buffered external
reference (see Note 1);
VeREF+ = 2.5V
SREFx = 010; un-buffered external
reference; VeREF+ = 1.5V
SREFx = 010; un-buffered external
reference; VeREF+ = 2.5V
ET
Total unadjusted error
SREFx = 011; buffered external
reference (see Note 1);
VeREF+ = 1.5V
TEST CONDITIONS
VCC
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V
3V
鹵1.1
鹵1.1
鹵1.1
MIN
TYP
MAX
鹵1
鹵1
鹵1
鹵2
鹵2
鹵4
UNIT
LSB
LSB
LSB
LSB
LSB
2.2 V
LSB
3V
鹵1.1
鹵2
鹵2
鹵2
鹵3
鹵5
鹵5
鹵7
LSB
2.2 V
3V
LSB
LSB
2.2 V
LSB
SREFx = 011; buffered external
reference (see Note 1);
VeREF+ = 2.5V
NOTES: 1. The reference buffer鈥檚 offset adds to the gain and total unadjusted error.
3V
鹵2
鹵6
LSB
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
49
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