Datasheet

60
65
70
75
80
85
90
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
SINAD – dB
Vpp/Vref/Gain
MSP430F673x
MSP430F672x
www.ti.com SLAS731C –DECEMBER 2011–REVISED FEBRUARY 2013
Figure 20. SINAD vs V
PP
SD24_B, External Reference Input
ensure correct input voltage range according to V
REF
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
V
REF(I)
Input voltage SD24REFS = 0 3 V 1.0 1.20 1.5 V
I
REF(I)
Input current SD24REFS = 0 3 V 50 nA
10-Bit ADC, Power Supply and Input Range Conditions
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
AV
CC
and DV
CC
are connected together,
AV
CC
Analog supply voltage AV
SS
and DV
SS
are connected together, 1.8 3.6 V
V
(AVSS)
= V
(DVSS)
= 0 V
V
(Ax)
Analog input voltage range
(1)
All ADC10_A pins 0 AV
CC
V
f
ADC10CLK
= 5 MHz, ADC10ON =1, REFON = 0, 2.2 V 70 105
Operating supply current into
AVCC terminal, REF module µA
SHT0 = 0, SHT1 = 0, ADC10DIV = 0, ADC10SREF
3 V 80 115
and reference buffer off
= 00
f
ADC10CLK
= 5 MHz, ADC10ON = 1, REFON = 1,
Operating supply current into
AVCC terminal, REF module 3 V 130 185 µA
SHT0 = 0, SHT1 = 0, ADC10DIV = 0, ADC10SREF
on, reference buffer on
= 01
I
ADC10_A
f
ADC10CLK
= 5 MHz, ADC10ON = 1, REFON = 0,
Operating supply current into
AVCC terminal, REF module 3 V 108 160 µA
SHT0 = 0, SHT1 = 0, ADC10DIV = 0, ADC10SREF
off, reference buffer on
= 10, VEREF = 2.5 V
f
ADC10CLK
= 5 MHz, ADC10ON = 1, REFON = 0,
Operating supply current into
AVCC terminal, REF module 3 V 74 105 µA
SHT0 = 0, SHT1 = 0, ADC10DIV = 0, ADC10SREF
off, reference buffer off
= 11, VEREF = 2.5 V
Only one terminal Ax can be selected at one time
C
I
Input capacitance from the pad to the ADC10_A capacitor array 2.2 V 3.5 pF
including wiring and pad.
AV
CC
> 2 V, 0 V ≤ V
Ax
≤ AV
CC
36
R
I
Input MUX ON resistance kΩ
1.8 V < AV
CC
< 2 V, 0 V ≤ V
Ax
≤ AV
CC
96
(1) The analog input voltage range must be within the selected reference voltage range V
R+
to V
R–
for valid conversion results. The external
reference voltage requires decoupling capacitors. Two decoupling capacitors, 10 µF and 100 nF, should be connected to VREF to
decouple the dynamic current required for an external reference source if it is used for the ADC10_A. Also see the MSP430x5xx and
MSP430x6xx Family User's Guide (SLAU208).
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