Datasheet

MSP430F47x
MIXED SIGNAL MICROCONTROLLER
SLAS629A -- MARCH 2009 -- REVISED APRIL 2009
42
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
SD16_A, power supply and recommended operating conditions
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
AV
CC
Analog supply
voltage
AV
CC
=DV
CC
AV
SS
=DV
SS
=0V
2.5 3.6 V
S
D
1
6
L
P
=
0
,
SD16BUFx = 00, GAIN: 1,2 3V 750 1050
S
D
1
6
L
P
=
0
,
f
SD16
=1MHz,
SD16BUFx = 00, GAIN: 4,8,16 3V 830 1150
f
S
D
1
6
1
M
H
z
,
SD16OSR = 256
SD16BUFx = 00, GAIN: 32 3V 1150 1700
I
Analog supply
c
u
r
r
e
n
t
i
n
c
l
u
d
i
n
g
SD16LP = 1,
f
0
5
M
H
z
SD16BUFx = 00, GAIN: 1 3V 730 1030
A
I
SD16
current including
internal reference
f
SD16
=0.5MHz,
SD16OSR = 256
SD16BUFx = 00, GAIN: 32 3V 830 1150
µ
A
S
D
1
6
L
P
=
0
,
SD16BUFx = 01, GAIN: 1 3V 850
S
D
1
6
L
P
=
0
,
f
SD16
=1MHz,
SD16BUFx = 10, GAIN: 1 3V 1000
f
S
D
1
6
1
M
H
z
,
SD16OSR = 256
SD16BUFx = 11, GAIN: 1 3V 1130
f
Analog front-end
i
n
p
u
t
c
l
o
c
k
SD16LP = 0 (Low power mode disabled) 3V 0.03 1 1.1
M
H
z
f
SD16
input clock
frequency
SD16LP = 1 (Low power mode enabled) 3V 0.03 0.5
MHz
SD16_A, input range
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
V
A
bsolute in
p
ut
SD16BUFx = 00 AV
SS
-0.1V AV
CC
V
V
I
A
b
s
o
l
u
t
e
i
n
p
u
t
voltage range
SD16BUFx > 00
AV
SS
+0.2V AV
CC
--1.2V
V
V
Common-mode
SD16BUFx = 00 AV
SS
-0.1V AV
CC
V
V
IC
C
o
m
m
o
n
m
o
d
e
input voltage range
SD16BUFx > 00
AV
SS
+0.2V AV
CC
--1.2V
V
V
Differential full scale
Bipolar Mode, SD16UNI = 0 -- V
REF
/2GAIN +V
REF
/2GAIN mV
V
ID,FSR
D
i
f
f
e
r
e
n
t
i
a
l
f
u
l
l
s
c
a
l
e
input voltage range
Unipolar Mode, SD16UNI = 1
0 +V
REF
/2GAIN mV
SD16GAINx = 1 ±500
Differential input
v
o
l
t
a
g
e
r
a
n
g
e
f
o
r
SD16GAINx =
2
±250
V
ID
vo
l
t
age range
f
or
specified
SD16REFON=1
SD16GAINx = 4 ±125
m
V
V
I
D
s
p
e
c
i
f
i
e
d
performance
(
N
t
1
)
S
D
1
6
R
E
F
O
N
=
1
SD16GAINx = 8 ±62
m
V
(see Note 1)
SD16GAINx = 16 ±31
SD16GAINx = 32 ±15
f
S
D1
6
=1MHz,
SD16GAINx = 1 3V 200
k
Ω
Z
I
Input impedance
(
o
n
e
i
n
p
u
t
p
i
n
t
o
f
S
D
1
6
=
1
M
H
z
,
SD16BUFx = 00
SD16GAINx = 32 3V 75
kΩ
Z
I
(one input pin to
AV
SS
)
f
SD16
=1MHz,
SD16BUFx = 01
SD16GAINx = 1 3V >10 MΩ
f
S
D1
6
=1MHz,
SD16GAINx = 1 3V 300 400
k
Ω
Z
I
D
Differential input
i
m
p
e
d
a
n
c
e
(
I
N
+
t
o
f
S
D
1
6
=
1
M
H
z
,
SD16BUFx = 00
SD16GAINx = 32 3V 100 150
kΩ
Z
ID
impedance (IN+ to
IN --)
f
SD16
=1MHz,
SD16BUFx > 00
SD16GAINx = 1 3V >10 MΩ
NOTES: 1. The analog input range depends on the reference voltage applied to V
REF
.IfV
REF
is sourced externally, the full-scale range
is defined by V
FSR+
=+(V
REF
/2)/GAIN and V
FSR--
=--(V
REF
/2)/GAIN. The analog input range should not exceed 80% of
V
FSR+
or V
FSR--
.