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LTC1290BCSW 데이터시트(PDF) 26 Page - Linear Technology

부품명 LTC1290BCSW
상세설명  Single Chip 12-Bit Data Acquisition System
PDF  32 Pages
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LTC1290BCSW 데이터시트(HTML) 26 Page - Linear Technology

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26
LTC1290
1290fe
A “Quick Look” Circuit for the LTC1290
Users can get a quick look at the function and timing of the
LTC1290 by using the following simple circuit. REF+ and
DIN are tied to VCC selecting a 5V input span, CH7 as a
single-ended input, unipolar mode, MSB-first format and
16-bit word length. ACLK and SCLK are tied together and
driven by an external clock. CS is driven at 1/128 the clock
rate by the CD4520 and DOUT outputs the data. All other
pins are tied to a ground plane. The output data from the
DOUT pin can be viewed on an oscilloscope which is set up
to trigger on the falling edge of CS.
S
APPLICATI
TYPICAL
A “Quick Look” Circuit for the LTC1290
1290 TA02
LTC1290
0.1
µF
22
µF
f
CHO
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
DGND
VIN
TO
OSCILLOSCOPE
CD4520
CLK
EN
Q1
Q2
Q3
Q4
RESET
VSS
VDD
RESET
Q4
Q3
Q2
Q1
EN
CLK
CLOCK IN
2MHz MAX
5V
VCC
ACLK
SCLK
DIN
DOUT
CS
REF+
REF–
V–
AGND
f/128
Scope Trace of LTC1290 “Quick Look” Circuit
Showing A/D Output of 010101010101 (555HEX)
D
OUT
CS
ACLK/
SCLK
MSB
(B11)
DEGLITCHER
TIME
LSB
(B0)
FILLS
ZEROS
VERTICAL: 5V/DIV
HORIZONTAL: 1
µs/DIV



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