sx8723c Semtech Corporation, sx8723c Datasheet - Page 25
sx8723c
Manufacturer Part Number
sx8723c
Description
Zoomingadc For Sensing Data Acquisition
Manufacturer
Semtech Corporation
Datasheet
1.SX8723C.pdf
(67 pages)
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Finally, combining
V
where the total PGA gain is defined as:
and the total PGA offset is:
7.6.1 PGA Ranges
Figure 11
voltage (V
ADVANCED COMMUNICATIONS & SENSING
IN
by:
COMMON
and
Figure 12
), the ADC over-sampling frequency (fs) and PGA gains. The best linearity performances can be
Equation 5
January 2011
illustrates the limits for the maximal conversion precision according to the common mode
to
Equation 7
V
IN
,
ADC
GDoff
=
GD
for the three PGA stages, the input voltage V
GD
TOT
TOT
TOT
=
⋅
V
Equation 10
Equation 11
Equation 12
Page 25
GDoff
=
IN
GD
−
GDoff
3
3
⋅
GD
+
GD
TOT
2
ZoomingADC for sensing data acquisition
⋅
3
GD
⋅
⋅
GDoff
S
1
⋅
V
REF
2
[
V
]
www.semtech.com/products/
IN,ADC
of the ADC is related to
SX8723C
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