APPLICATIONS IN
參數(shù)資料
型號: LTC1598IG
廠商: Linear Technology
文件頁數(shù): 5/24頁
文件大小: 0K
描述: IC A/D CONV 12BIT SRL 8CH 24SSOP
標準包裝: 59
位數(shù): 12
采樣率(每秒): 16.8k
數(shù)據(jù)接口: MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 480µW
電壓電源: 單電源
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-SSOP(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 24-SSOP
包裝: 管件
輸入數(shù)目和類型: 8 個單端,單極
13
LTC1594/LTC1598
15948fb
APPLICATIONS INFORMATION
WU
U
Operation with DIN and DOUT Tied Together
The LTC1594/LTC1598 can be operated with DIN and
DOUT tied together. This eliminates one of the lines
required to communicate to the microprocessor (MPU).
Data is transmitted in both directions on a single wire.
The processor pin connected to this data line should be
configurable as either an input or an output. The LTC1594/
LTC1598 will take control of the data line after CS falling
and before the 6th falling CLK while the processor takes
control of the data line when CS is high (see Figure 3).
Therefore the processor port line must be switched to an
input with CS being low to avoid a conflict.
Separate Chip Selects for MUX and ADC
The LTC1594/LTC1598 provide separate chip selects,
CSMUX and CSADC, to control MUX and ADC separately.
This feature not only provides the flexibility to select a
particular channel once for multiple conversions (see
Figure 4) but also maximizes the sample rate up to
20ksps (see Figure 5).
Figure 4. Select Certain Channel Once for Mulitple Conversions
CLK
EN
D1
D2
CSADC
CSMUX
B5
B6
B7
B8
B9
B10
B11
Hi-Z
DOUT
CH0 TO
CH7
DIN
tCONV
Hi-Z
tsuCS
NULL
BIT
D0
B4
B3
B2
B1
B0
tSMPL
tON
B5
B6
B7
B8
B9
B10
B11
Hi-Z
tCONV
tsuCS
NULL
BIT
D0
B4
B3
B2
B1
B0
tSMPL
ADCIN =
MUXOUT
COM = GND
1594 TD01
DON’T CARE
1
2
3
456
CS
CLK
DATA (DIN/DOUT)
EN
D2
D1
D0
B11
B10
LTC1594/LTC1598 CONTROLS DATA LINE AND SENDS
A/D RESULT BACK TO MPU
MPU CONTROLS DATA LINE AND SENDS
MUX ADDRESS TO LTC1594/LTC1598
PROCESSOR MUST RELEASE DATA
LINE AFTER CS FALLING AND
BEFORE THE 6TH FALLING CLK
LTC1594/LTC1598 TAKES CONTROL OF DATA
LINE AFTER CS FALLING AND BEFORE THE
6TH FALLING CLK
1594/98 F03
tsuCS
Figure 3. LTC1594/LTC1598 Operation with DIN and DOUT Tied Together
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