Datasheet

MSP430x22x2, MSP430x22x4
MIXED SIGNAL MICROCONTROLLER
SLAS504B − JULY 2006 − REVISED JULY 2007
46
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
10-bit ADC, power supply and input range conditions (see Note 1)
PARAMETER TEST CONDITIONS T
A
VCC MIN TYP MAX UNIT
V
CC
Analog supply voltage
range
V
SS
= 0 V 2.2 3.6 V
V
Ax
Analog input voltage range
(see Note 2)
All Ax terminals.
Analog inputs selected in
ADC10AE register
0 V
CC
V
I
ADC10 supply current
f
ADC10CLK
= 5.0 MHz
ADC10ON = 1, REFON = 0,
ADC10SHT0 1
I: -40−85°C
2.2 V 0.52 1.05
mA
I
ADC10
ADC10
supply
current
(see Note 3)
ADC10SHT0 = 1,
ADC10SHT1 = 0,
ADC10DIV = 0
I:
40 85 C
T: -40−105°C
3 V 0.6 1.2
mA
I
Reference supply current,
reference buffer disabled
f
ADC10CLK
= 5.0 MHz,
ADC10ON = 0, REF2_5V = 0,
REFON = 1, REFOUT = 0
I: -40−85°C
T: -40−105°C
2.2 V/3 V
025
04
mA
I
REF+
reference buffer disabled
(see Note 4)
f
ADC10CLK
= 5.0 MHz,
ADC10ON = 0, REF2_5V = 1,
REFON = 1, REFOUT = 0
I: -40−85°C
T: -40−105°C
3 V
0.25 0.4 mA
I
Reference buffer supply
current with ADC10SR 0
f
ADC10CLK
= 5.0 MHz,
ADC10ON = 0,
REFON 1 REF2 5V 0
-40−85°C 2.2 V/3 V 1.1 1.4
mA
I
REFB,0
current with ADC10SR = 0
(see Note 4)
REFON = 1, REF2_5V = 0,
REFOUT = 1,
ADC10SR=0
105°C 2.2 V/3 V 1.8
mA
I
Reference buffer supply
current with ADC10SR 1
f
ADC10CLK
= 5.0 MHz,
ADC10ON = 0,
REFON = 1
,
-40−85°C 2.2 V/3 V 0.5 0.7
mA
I
REFB,1
current with ADC10SR = 1
(see Note 4)
REFON
=
1
,
REF2_5V = 0,
REFOUT = 1,
ADC10SR=1
105°C 2.2 V/3 V 0.8
mA
C
I
Input capacitance
Only one terminal Ax selected
at a time
I: -40−85°C
T: -40−105°C
27 pF
R
I
Input MUX ON resistance 0V ≤ V
Ax
≤ V
CC
I: -40−85°C
T: -40−105°C
2.2 V/3 V 2000 Ω
NOTES: 1. The leakage current is defined in the leakage current table with Px.x/Ax parameter.
2. The analog input voltage range must be within the selected reference voltage range V
R+
to V
R−
for valid conversion results.
3. The internal reference supply current is not included in current consumption parameter I
ADC10
.
4. The internal reference current is supplied via terminal V
CC
. Consumption is independent of the ADC10ON control bit, unless a
conversion is active. The REFON bit enables the built-in reference to settle before starting an A/D conversion.