XE8805AMI028LF Semtech, XE8805AMI028LF Datasheet - Page 104
XE8805AMI028LF
Manufacturer Part Number
XE8805AMI028LF
Description
IC DAS 16BIT FLASH 8K MTP 64LQFP
Manufacturer
Semtech
Datasheet
1.XE8805AMI028LF.pdf
(156 pages)
Specifications of XE8805AMI028LF
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
64-LQFP
Supply Voltage Range
2.4V To 5.5V
Operating Temperature Range
-40°C To +85°C
Digital Ic Case Style
LQFP
No. Of Pins
64
For Use With
XE8000MP - PROG BOARD AND PROSTART2 CARD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
XE8805AMI028LF
Manufacturer:
SEMTECH/美国升特
Quantity:
20 000
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The equivalent LSB size at the input of the PGA chain is:
Notice that the input voltage V
to remain within the ADC input range.
16.7.8
During low-speed operation, the bias current in the PGAs and ADC can be programmed to save power using the
control words IB_AMP_PGA[1:0] and IB_AMP_ADC[1:0] (see Table 16-26). If the system is idle, the PGAs and
ADC can even be disabled, thus, reducing power consumption to its minimum. This can considerably improve
battery lifetime.
16.8 Specifications and Measured Curves
This section presents measurement results for the acquisition chain. A summary table with circuit specifications
and measured curves are given.
© Semtech 2006
LSB
V
IN
Power Saving Modes
,
ADC
=
2
1
≤
n
Table 16-26. ADC & PGA power saving modes and maximum sampling frequency
⋅
1
2
GD
V
⋅
(
REF
V
TOT
REFP
IB_AMP_ADC
⋅
OSR
[1:0]
−
OSR
V
00
01
10
11
x
REFN
IN,ADC
+
1
)
⋅
OSR
of the ADC must satisfy the condition:
OSR
IB_AMP_PGA
(V)
+
[1:0]
1
00
01
10
11
x
(V)
Current
1/4⋅I
1/2⋅I
3/4⋅I
ADC
Bias
I
ADC
16-18
x
ADC
ADC
ADC
1/4⋅I
1/2⋅I
3/4⋅I
Current
PGA
Bias
I
PGA
x
PGA
PGA
PGA
Max. f
(Eq. 19)
(Eq. 20)
[kHz]
62.5
62.5
125
250
500
125
250
500
S
XE8805/05A
www.semtech.com
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