TYPICAL APPLICATIONS U Figure 21 shows the connections" />
參數(shù)資料
型號: LTC1417AIGN#TRPBF
廠商: Linear Technology
文件頁數(shù): 16/32頁
文件大?。?/td> 0K
描述: IC A/D CONV 14BIT SAMPLNG 16SSOP
標(biāo)準(zhǔn)包裝: 2,500
位數(shù): 14
采樣率(每秒): 400k
數(shù)據(jù)接口: MICROWIRE?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 27.5mW Unipolar; 44mW Bipolar
電壓電源: 雙 ±
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-SSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 2 個單端,單極;2 個單端,雙極;1 個差分,單極;1 個差分,雙極
23
LTC1417
sn1417 1417fas
TYPICAL APPLICATIONS
U
Figure 21 shows the connections necessary for interfacing
the LTC1417 and LTC1391 8-channel signal acquisition
system to an SPI port. With the sample software routine
shown in Listing A, the SPI uses MOSI to send serial data
to the LTC1391 8-channel multiplexer, selecting one of
eight MUX channels.
While data is sent to the LTC1391, SPI uses MISO to
retrieve conversion data from the LTC1417. After the data
transfer is complete, the conversion start signal is sent to
the LTC1417. The end of conversion is signaled by a logic
high on the BUSY output. When this occurs, data is
exchanged between the LTC1417/LTC1391 and the
controller.
The timing diagram in Figure 22 shows the relation be-
tween MUX channel selection data and the conversion
data that are simultaneously exchanged. There is a two
conversion delay between the MUX data selects a given
channel and when that channel’s data is retrieved.
Figure 21. 0V to 4.096V, 8-Channel Data Acquisition System Configured
for Control and Data Retrieval by a 68HC11
C. Code is Shown in Listing A
1417 F21
1
F
10
F
5V
10
F
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LTC1417
5V
NC
PORT C, BIT 7
PORT C, BIT 0
SS
MISO
MC68HC11
CLK
MOSI
AIN
+
AIN
VREF
REFCOMP
AGND
EXTCLKIN
SCLK
CLKOUT
VDD
VSS
BUSY
CONVST
RD
SHDN
DGND
DOUT
LTC1391
S0
S1
S2
S3
S4
S5
S6
S7
16
15
14
13
12
11
10
9
V +
D
V
DOUT
DIN
CS
CLK
DGND
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
1
2
3
4
5
6
7
8
0.1
F
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參數(shù)描述
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LTC1417CGN#PBF 制造商:Linear Technology 功能描述:ADC, 14BIT, 400KSPS, SSOP-16
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