Texas Instruments EVM430-F6736 - MSP430F6736 EVM for Metering EVM430-F6736 EVM430-F6736 Datenbogen
Produktcode
EVM430-F6736
55
60
65
70
75
80
85
90
95
32
64
128
256
512
1024
SINAD
–
dB
SD24OSRx
MSP430F673x
MSP430F672x
MSP430F672x
SLAS731C – DECEMBER 2011 – REVISED FEBRUARY 2013
SD24_B, AC Performance
f
SD24
= 32 kHz, SD24OSRx = 512, SD24REFS = 1
PARAMETER
TEST CONDITIONS
V
CC
MIN
TYP
MAX
UNIT
SD24GAIN: 1
3 V
89
SD24GAIN: 2
3 V
85
SD24GAIN: 4
3 V
84
SD24GAIN: 8
3 V
86
Signal-to-noise +
SINAD
f
IN
= 12Hz
(1)
dB
distortion ratio
SD24GAIN: 16
3 V
80
SD24GAIN: 32
3 V
76
SD24GAIN: 64
3 V
67
SD24GAIN: 128
3 V
61
(1)
The following voltages were applied to the SD24_B inputs:
V
V
I,A+
(t) = 0 V + V
PP
/2 × sin(2
π
× fIN × t)
V
I,A-
(t) = 0 V - V
PP
/2 × sin(2
π
× f
IN
× t)
resulting in a differential voltage of V
ID
= V
I,A+
(t) - V
I,A-
(t) = V
PP
× sin(2
π
× f
IN
× t) with V
PP
being selected as the maximum value allowed
for a given range (according to SD24_B recommended operating conditions).
Figure 19. SINAD vs OSR
(f
SD24
= 1 MHz, SD24REFS = 1, SD24GAIN = 1)
76
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