參數(shù)資料
型號: LTC1418AIG
廠商: LINEAR TECHNOLOGY CORP
元件分類: ADC
英文描述: Low Power, 14-Bit, 200ksps ADC with Serial and Parallel I/O
中文描述: 1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PDSO28
封裝: 0.209 INCH, PLASTIC, SSOP-28
文件頁數(shù): 25/28頁
文件大?。?/td> 712K
代理商: LTC1418AIG
25
LTC1418
APPLICATIO
S I
N
FOR
ATIO
U
also allows operation when the SCLK frequency is very low
(less than 30kHz). To select the internal conversion clock
tie EXT/INT low. The external SCLK is applied to SCLK. RD
can be used to gate the external SCLK, such that data will
clock only after RD goes low and to three-state D
OUT
after
data transfer. If more than 16 SCLKs are provided, more
zeros will be filled in after the data word indefinitely.
W
U
LTC1418
BUSY
CONVST
CONVST
RD
EXTCLKIN
SCLK
D
OUT
EXT/INT
CS
5V
25
16
24
23
17
26
19
20
1418 F25a
μ
P OR DSP
CLKOUT
INT
C0
SCK
MISO
t
5
t
6
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
CS = 0, EXT/INT = 5
CONVST
EXTCLKIN
t
13
t
dEXTCLKIN
t
8
HOLD
SAMPLE
t
9
t
7
t
11
BUSY
SCLK
RD
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
1
2
3
4
12 11 10 9
8
7
6
5
4
3
2
1
0
FILL
ZEROS
D13
Hi-Z
DATA N
Hi-Z
(SAMPLE N)
D
OUT
t
CONV
t
10
1418 F25b
D11
D12
CAPTURE ON
RISING CLOCK
D13
t
15
t
14
SCLK
V
IL
V
OH
V
OL
D
OUT
CAPTURE ON
FALLING CLOCK
t
LSCLK
t
HSCLK
Figure 25. External Conversion Clock Selected. Data Transferred After Conversion
Using an External SCLK. BUSY
Indicates End of Conversion
Using External Conversion Clock and External Data
Clock
. In Figure 25, data is also output after each conver-
sion is completed and before the next conversion is
started. An external clock is used for the conversion clock
and either another or the same external clock is used for
the SCLK. This mode is identical to Figure 24 except that
an external clock is used for the conversion. This mode
相關(guān)PDF資料
PDF描述
LTC1418ACN Quad, Low Voltage, LinCMOS(TM) Differential Comparator 14-SOIC
LTC1418AIN Low Power, 14-Bit, 200ksps ADC with Serial and Parallel I/O
LTC1418C Quad, Low Voltage, LinCMOS(TM) Differential Comparator 14-PDIP
LTC1418CG Quad, Low Voltage, LinCMOS(TM) Differential Comparator 14-PDIP
LTC1418CN Quad, Low Voltage, LinCMOS(TM) Differential Comparator 14-TSSOP
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