Texas Instruments MSP430F677xIPEU & MSP430F677x1IPEU 128-Pin target board MSP-TS430PEU128 MSP-TS430PEU128 Datenbogen
Produktcode
MSP-TS430PEU128
ECCN 5E002 TSPA - Technology / Software Publicly Available
MSP430F677x
,
MSP430F676x
,
MSP430F674x
SLAS768D – SEPTEMBER 2012 – REVISED DECEMBER 2013
SD24_B Performance (continued)
f
SD24
= 1 MHz, SD24OSRx = 256, SD24REFON = 1
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SD24GAIN: 1, with external reference (1.2 V)
3 V
-1
+1
E
G
Gain error
(1)
SD24GAIN: 8, with external reference (1.2 V)
3 V
-2
+2
%
SD24GAIN: 32, with external reference (1.2 V)
3 V
-2
+2
Gain error temperature
ΔE
G
/
ΔT
coefficient
(2)
, internal
SD24GAIN: 1, 8, or 32 (with internal reference)
3 V
80
ppm/°C
reference
SD24GAIN: 1 (with external reference)
3 V
15
Gain error temperature
ΔE
G
/
ΔT
coefficient
(2)
, external
SD24GAIN: 8 (with external reference)
3 V
15
ppm/°C
reference
SD24GAIN: 32 (with external reference)
3 V
15
SD24GAIN: 1
3 V
0.1
ΔE
G
/
ΔV
CC
Gain error vs V
CC
(3)
SD24GAIN: 8
3 V
0.1
%/V
SD24GAIN: 32
3 V
0.4
SD24GAIN: 1 (with Vdiff = 0V)
3 V
2.3
E
OS
[V]
Offset error
(4)
SD24GAIN: 8
3 V
1
mV
SD24GAIN: 32
3 V
0.5
SD24GAIN: 1 (with Vdiff = 0V)
3 V
-0.2
+0.2
% FS
E
OS
[FS]
Offset error
(4)
SD24GAIN: 8
3 V
-0.7
+0.7
% FS
SD24GAIN: 32
3 V
-1.4
+1.4
% FS
SD24GAIN: 1
3 V
2
Offset error temperature
ΔE
OS
/
ΔT
SD24GAIN: 8
3 V
0.25
µV/°C
coefficient
(5)
SD24GAIN: 32
3 V
0.1
SD24GAIN: 1
3 V
500
ΔE
OS
/
ΔV
CC
Offset error vs V
CC
(6)
SD24GAIN: 8
3 V
125
µV/V
SD24GAIN: 32
3 V
50
SD24GAIN: 1
3 V
-120
Common mode rejection at
CMRR,DC
SD24GAIN: 8
3 V
-110
dB
DC
(7)
SD24GAIN: 32
3 V
-100
(1)
The gain error E
G
specifies the deviation of the actual gain G
act
from the nominal gain G
nom
: E
G
= (G
act
- G
nom
)/G
nom
. It covers process,
temperature and supply voltage variations.
(2)
The gain error temperature coefficient
ΔE
G
/
ΔT specifies the variation of the gain error E
G
over temperature (E
G
(T) = (G
act
(T) -
G
nom
)/G
nom
) using the box method (that is, minimum and maximum values):
ΔE
G
/
ΔT = (MAX(E
G
(T)) - MIN(E
G
(T) ) / (MAX(T) - MIN(T)) = (MAX(G
act
(T)) - MIN(G
act
(T)) / G
nom
/ (MAX(T) - MIN(T))
with T ranging from -40°C to +85°C.
(3)
The gain error vs V
CC
coefficient
ΔE
G
/
ΔV
CC
specifies the variation of the gain error E
G
over supply voltage (E
G
(V
CC
) = (G
act
(V
CC
) -
G
nom
)/G
nom
) using the box method (that is, minimum and maximum values):
ΔE
G
/
ΔV
CC
= (MAX(E
G
(V
CC
)) - MIN(E
G
(V
CC
) ) / (MAX(V
CC
) - MIN(V
CC
)) = (MAX(G
act
(V
CC
)) - MIN(G
act
(V
CC
)) / G
nom
/ (MAX(V
CC
) -
MIN(V
CC
))
with V
CC
ranging from 2.4V to 3.6V.
(4)
The offset error E
OS
is measured with shorted inputs in 2s complement mode with +100% FS = V
REF
/G and -100% FS = -V
REF
/G.
Conversion between E
OS
[FS] and E
OS
[V] is as follows: E
OS
[FS] = E
OS
[V]×G/V
REF
; E
OS
[V] = E
OS
[FS]×V
REF
/G.
(5)
The offset error temperature coefficient
ΔE
OS
/
ΔT specifies the variation of the offset error E
OS
over temperature using the box method
(that is, minimum and maximum values):
ΔE
ΔE
OS
/
ΔT = (MAX(E
OS
(T)) - MIN(E
OS
(T) ) / (MAX(T) - MIN(T))
with T ranging from -40°C to +85°C.
(6)
The offset error vs V
CC
ΔE
OS
/
ΔV
CC
specifies the variation of the offset error E
OS
over supply voltage using the box method (that is,
minimum and maximum values):
ΔE
ΔE
OS
/
ΔV
CC
= (MAX(E
OS
(V
CC
)) - MIN(E
OS
(V
CC
) ) / (MAX(V
CC
) - MIN(V
CC
))
with V
CC
ranging from 2.4V to 3.6V.
(7)
The DC CMRR specifies the change in the measured differential input voltage value when the common mode voltage varies:
DC CMRR = -20log(
DC CMRR = -20log(
Δ
MAX
/FSR) with
Δ
MAX
being the difference between the minium value and the maximum value measured when
sweeping the common mode voltage.
The DC CMRR is measured with both inputs connected to the common mode voltage (that is, no differential input signal is applied), and
the common mode voltage is swept from -1V to V
The DC CMRR is measured with both inputs connected to the common mode voltage (that is, no differential input signal is applied), and
the common mode voltage is swept from -1V to V
CC
.
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