XE8801AMI000WP Semtech, XE8801AMI000WP Datasheet - Page 101
XE8801AMI000WP
Manufacturer Part Number
XE8801AMI000WP
Description
SENSING MACHINE WITH 16 + 10 BIT
Manufacturer
Semtech
Datasheet
1.XE8801AMI027LF.pdf
(135 pages)
Specifications of XE8801AMI000WP
Applications
Sensing Machine
Core Processor
RISC
Program Memory Type
FLASH (22 kB)
Controller Series
XE8000
Ram Size
512 x 8
Interface
UART, USRT
Number Of I /o
24
Voltage - Supply
2.4 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
Die
For Use With
XE8000MP - PROG BOARD AND PROSTART2 CARD
Other names
Q2722595
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Recalling equation Eq. 9, this can be rewritten as:
where, from Eq. 10 and Eq. 11, the total PGA gain and offset are respectively:
and:
© Semtech 2005
OUT
OUT
GD
GDoff
Table 16-25. Last forced LSBs in conversion output registers for resolution settings smaller than 16
TOT
SET_OS
ADC
ADC
[2:0]
000
001
010
011
100
101
110
111
TOT
R
=
Table 16-24. Basic ADC Relationships (example for: V
=
=
GD
=
2
2
GDoff
16
16
3
⋅
⋅
⋅
GD
V
V
SET_NELC = 00
V
V
IN
REF
IN
REF
3
,
2
ADC
+
⋅
1000000000
⋅
GD
⎛
⎜ ⎜
⎝
GD
GD
10000000
⋅
ADC Input
+2.49505V
+2.49497V
+76.145µV
-76.145µV
-2.49505V
-2.49513V
OSR
Voltage
1
bits (n < 16) (RegAcOutMsb[7:0] & RegAcOutLsb[7:0])
3
V
100000
OSR
TOT
⋅
IN,ADC
0V
GDoff
...
...
1000
+
−
10
1
GDoff
-
-
-
2
(LSB)
(V/V)
SET_NELC = 01
+0.5⋅FS
-0.5⋅FS
TOT
Scale
% of
(FS)
Full
...
...
...
...
...
...
0
100000000
⋅
V
(V/V)
V
1000000
REF
IN
10000
⎞
⎟ ⎟
⎠
100
Output in
⋅
=+32'767
=+32'766
=-32'767
=-32'768
OSR 1
1
16-16
-
-
-
+2
+2
LSBs
-2
OSR
-2
+1
-1
...
...
15
15
15
0
15
SET_NELC = 10
-1
-1
-2
+
10000000
Output
in Hex
100000
Code
7FFE
FFFF
7FFF
0001
0000
8001
8000
...
...
1000
(Eq.17)
(LSB) (Eq. 18)
10
REF
-
-
-
-
= 5V, OSR = 512, n = 16 bits)
SET_NELC = 11
XE8801A – SX8801R
1000000
10000
100
1
-
-
-
-
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