LTC1289CCSW View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1289CCSW' PDF : 28 Pages View PDF
LTC1289
TYPICAL APPLICATI S
A “Quick Look” Circuit for the LTC1289
Users can get a quick look at the function and timing of the
LTC1289 by using the following simple circuit. REF+ and
DIN are tied to VCC selecting a 3V input span, CH7 as a
single-ended input, unipolar mode, MSB-first format and
16-bit word length. ACLK is driven by an external clock and
SCLK is driven by one half the clock rate. CS is driven at
1/128 the clock rate by the 74HC393 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.
A “Quick Look” Circuit for the LTC1289
3.0V
22µF
f
A1
VCC
CHO
VCC
CH1
ACLK
f/2
CH2
SCLK
CH3
DIN
CH4
DOUT
LTC1289
CH5
CS
CLR1
A2
1QA
CLR2
1QB 74HC393 2QA
1QC
2QB
1QD
2QC
GND
2QD
0.1µF
CH6
REF+
VIN
CH7
REF–
COM
V–
DGND
AGND
f/128
CLOCK IN
2MHz MAX
LTC1289 TA02
TO
OSCILLOSCOPE
Scope Trace of LTC1289 “Quick Look” Circuit
Showing A/D Output of 010101010101 (555HEX)
ACLK
SCLK
CS
DOUT
DEGLITCHER
TIME
MSB
(B11)
LSB
(B0)
VERTICAL: 5V/DIV
HORIZONTAL: 2µs/DIV
FILLS
ZEROES
23
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