XE8801AMI027LF Semtech, XE8801AMI027LF Datasheet - Page 111
XE8801AMI027LF
Manufacturer Part Number
XE8801AMI027LF
Description
IC DAS 16BIT FLASH 8K MTP 44LQFP
Manufacturer
Semtech
Datasheet
1.XE8801AMI027LF.pdf
(135 pages)
Specifications of XE8801AMI027LF
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
44-LQFP
For Use With
XE8000MP - PROG BOARD AND PROSTART2 CARD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Figure 16-19 shows gain error drift vs. temperature for different PGA gains. The curves are expressed in % of Full-
Scale Range (FSR) normalized to 25°C.
Offset error is defined as the output code error for a zero volt input (ideally, output code = 0). The offset of the ADC
and the PGA1 stage are completely suppressed if N
The measured offset drift vs. temperature curves for different PGA gains are depicted in Figure 16-20. The output
offset error, expressed in LSB for 16-bit setting, is normalized to 25°C. Notice that if the ADC is used alone, the
output offset error is below ±1 LSB and has no drift.
16.8.6
Figure 16-21 plots the variation of quiescent current consumption with supply voltage V
between the 3 PGA stages and the ADC (see Table 16-28). As shown in Figure 16-22, if lower sampling frequency is
used, the quiescent current consumption can be lowered by reducing the bias currents of the PGAs and the ADC
with registers IB_AMP_PGA [1:0] and IB_AMP_ADC [1:0]. (In Figure 16-22, IB_AMP_PGA/ADC[1:0] = '11',
'10', '00' for f
Quiescent current consumption vs. temperature is depicted in Figure 16-23, showing a relative increase of nearly
40% between -45 and +85°C. Figure 16-24 shows the variation of quiescent current consumption for different
© Semtech 2005
Power Consumption
S
= 500, 250, 62.5kHz respectively.)
Figure 16-20 Offset error vs. temperature for different PGA gains
Figure 16-19 Gain error vs. temperature for different PGA gains
-0.1
-0.2
-0.3
-0.4
100
0.2
0.1
0.0
-20
-40
80
60
40
20
0
-50
-50
NORMALIZED TO 25°C
-25
NORMALIZED TO 25°C
-25
ELCONV
Temperature [°C]
Temperature [°C]
0
0
16-26
> 1.
25
25
50
50
75
75
1
5
20
100
1
5
20
100
100
100
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