Datasheet

MSP430FE42x2
MIXED SIGNAL MICROCONTROLLER
SLAS616 − JULY 2008
29
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
ESP430CE1B, SD16 and ESP430 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
2.7 3.6 V
SD16LP = 0,
GAIN(V): 1, GAIN(I1): 1, I2: off 3 V 2.0 2.6
SD16LP
0,
f
MCLK
= 4MHz,
f f /4
GAIN(V): 1, GAIN(I1): 32, I2: off 3 V 2.4 3.3
Total digital and
analog supply
f
SD16
= f
MCLK
/4,
SD16REFON
=
1,
GAIN(V): 1, GAIN(I1): 1, GAIN(I2): 1 3 V 2.7 3.6
I
analog supply
current when
SD16REFON
=
1
,
SD16VMIDON = 0
GAIN(V): 1, GAIN(I1): 32, GAIN(I2): 32 3 V 3.4 4.9
mA
I
ESP430
current
when
ESP430 and SD16
i
SD16LP = 1,
GAIN(V): 1, GAIN(I1): 1, I2: off 3 V 1.5 2.1
mA
active
(I
AVCC
+I
DVCC
)
SD16LP
1,
f
MCLK
= 2 MHz,
f f /4
GAIN(V): 1, GAIN(I1): 32, I2: off 3 V 1.6 2.1
(I
AVCC
+
I
DVCC
)
f
SD16
= f
MCLK
/4,
SD16REFON
=
1,
GAIN(V): 1, GAIN(I1): 1, GAIN(I2): 1 3 V 2.1 2.8
SD16REFON
=
1
,
SD16VMIDON = 0
GAIN(V): 1, GAIN(I1): 32, GAIN(I2): 32 3 V 2.2 3.0
Analog supply
SD16LP
=
0,
GAIN: 1, 2 3 V 650 950
Analog supply
current: one active
SD16LP
=
0
,
f
SD16
= 1 MHz,
GAIN: 4, 8, 16 3 V 730 1100
I
SD16
current:
one
active
SD16 channel
f
SD16
1
MHz,
SD16OSR = 256
GAIN: 32 3 V 1050 1550
µA
I
SD16
including internal
reference
(
ESP430
SD16LP = 1,
f 0 5 MHz
GAIN: 1 3 V 620 930
µ
A
reference
(ESP430
disabled)
f
SD16
= 0.5 MHz,
SD16OSR = 256
GAIN: 32 3 V 700 1060
f
MAINS
Mains frequency
range
33 80 Hz
f
Analog front-end
input clock
SD16LP = 0 (low-power mode disabled) 3 V 1
MHz
f
SD16
input clock
frequency
SD16LP = 1 (low-power mode enabled) 3 V 0.5
MHz
ESP430CE1B, SD16 input range (see Note 1)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
SD16GAINx = 1, SD16REFON = 1 ±500
Differential input
SD16GAINx = 2, SD16REFON = 1
±250
V
Differential
input
voltage range for
specified
SD16GAINx = 4, SD16REFON = 1 ±125
mV
V
ID
specified
performance
SD16GAINx = 8, SD16REFON = 1 ±62
mV
performance
(see Note 2)
SD16GAINx = 16, SD16REFON = 1 ±31
(see
Note
2)
SD16GAINx = 32, SD16REFON = 1 ±15
Z
Input impedance
(one input pin to
f
SD16
= 1MHz, SD16GAINx = 1 3 V 200
kΩ
Z
I
(one input pin to
AV
SS
)
f
SD16
= 1MHz, SD16GAINx = 32 3 V 75
kΩ
Z
Differential input
impedance
f
SD16
= 1MHz, SD16GAINx = 1 3 V 300 400
kΩ
Z
ID
impedance
(IN+ to IN−)
f
SD16
= 1MHz, SD16GAINx = 32 3 V 100 150
kΩ
V
I
Absolute input
voltage range
AV
SS
−
1 V
AV
CC
V
V
IC
Common-mode
input voltage range
AV
SS
−
1 V
AV
CC
V
NOTES: 1. All parameters pertain to each SD16 channel.
2. The analog input range depends on the reference voltage applied to V
REF
. If V
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−
.