MSP430F2618-EP Datasheet, PDF (58/92 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F2618- EP
MIXED SIGNAL MICROCONTROLLER
SLAS632 -- DECEMBER 2008
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
12-bit ADC power supply and input range conditions (see Note 1)
AV_CC
PARAMETER
Analog supply voltage
V_(P6.x/Ax)
Analog input voltage
(see Note 2)
TEST CONDITIONS
V_CC
AV_CC and DV_CC are connected together,
AV_SS and DV_SS are connected together,
V_(AVSS) = V_(DVSS) = 0 V
All P6.0/A0 to P6.7/A7 terminals.
Analog inputs selected in ADC12MCTLx register
and P6Sel.x = 1, 0  x  7,
V_(AVSS)  V_P6.x/Ax  V_(AVCC)
MIN TYP MAX UNIT
2.2
3.6 V
0
V_AVCC
V
I_ADC12
Operating supply current
into AV_CC terminal
(see Note 3)
f_ADC12CLK = 5 MHz, ADC12ON = 1, REFON = 0,
SHT0 = 0, SHT1 = 0, ADC12DIV = 0
2.2 V
3V
0.65
0.8
mA
0.8
1.0
I_REF+
Operating supply current
into AV_CC terminal
(see Note 4)
f_ADC12CLK = 5 MHz, ADC12ON = 0,
REFON = 1, REF2_5V = 1
f_ADC12CLK = 5 MHz, ADC12ON = 0,
REFON = 1, REF2_5V = 0
3V
2.2 V
3V
0.5
0.7
0.5
0.7 ^mA
0.5
0.7
C_I ^†
Input capacitance
Only one terminal can be selected at one time,
P6.x/Ax
2.2 V
40 pF
R_I†
Input MUX ON resistance 0 V  V_Ax  V_AVCC
3V
2000 
† _{Limits verified by design}
NOTES: 1. The leakage current is defined in the leakage current table with P6.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_ADC12.
4. The internal reference current is supplied via terminal AV_CC. Consumption is independent of the ADC12ON control bit, unless a
conversion is active. The REFON bit enables to settle the built-in reference before starting an A/D conversion.
12-bit ADC external reference (see Note 1)
V_eREF+
PARAMETER
Positive external
reference voltage input
TEST CONDITIONS
V_eREF+ > V_REF--/V_eREF-- (see Note 2)
V_CC
MIN MAX UNIT
1.4 V_AVCC
V
V_{REF-- /}V_eREF--
Negative external
reference voltage input
V_eREF+ > V_REF--/V_eREF-- (see Note 3)
0
1.2 V
(V_eREF+ -- V_REF--/V_eREF--)
Differential external
reference voltage input
V_eREF+ > V_REF--/V_eREF-- (see Note 4)
1.4 V_AVCC
V
I_VeREF+
Static input current
0V V_eREF+  V_AVCC
2.2 V/3 V
1 A
I_{VREF--/VeREF--}
Static input current
0V  V_eREF--  V_AVCC
2.2 V/3 V
1 A
NOTES: 1. The external reference is used during conversion to charge and discharge the capacitance array. The input capacitance, C_i, is also
the dynamic load for an external reference during conversion. The dynamic impedance of the reference supply should follow the
recommendations on analog-source impedance to allow the charge to settle for 12-bit accuracy.
2. The accuracy limits the minimum positive external reference voltage. Lower reference voltage levels may be applied with reduced
accuracy requirements.
3. The accuracy limits the maximum negative external reference voltage. Higher reference voltage levels may be applied with reduced
accuracy requirements.
4. The accuracy limits minimum external differential reference voltage. Lower differential reference voltage levels may be applied with
reduced accuracy requirements.
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