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LTC1290BCSW データシート(PDF) 7 Page - Linear Technology

部品番号 LTC1290BCSW
部品情報  Single Chip 12-Bit Data Acquisition System
PDF  28 Pages
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LTC1290BCSW データシート(HTML) 7 Page - Linear Technology

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LTC1290
PI FU CTIO S
DIN (Pin 17): Digital Data Input. The A/D configuration
word is shifted into this input after CS is recognized.
SCLK (Pin 18): Shift Clock. This clock synchronizes the
serial data transfer.
ACLK (Pin 19): A/D Conversion Clock. This clock controls
the A/D conversion process.
VCC (Pin 20): Positive Supply. This supply must be kept
free of noise and ripple by bypassing directly to the analog
ground plane.
BLOCK DIAGRAM
INPUT
SHIFT
REGISTER
SAMPLE-
AND-
HOLD
12-BIT
CAPACITIVE
DAC
VCC
20
ANALOG
INPUT MUX
1
2
3
4
5
6
7
8
9
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
DOUT
16
SCLK
18
CONTROL
AND
TIMING
15
CS
LTC1290 • BD
17
REF+
14
DGND
10
AGND
11
V–
12
REF–
13
COMP
OUTPUT
SHIFT
REGISTER
DIN
19
ACLK
12-BIT
SAR
TEST CIRCUITS
5V
A
A
IOFF
ION
POLARITY
OFF
CHANNELS
ON CHANNEL
LTC1290 • TC01
•
•
•
•
On and Off Channel Leakage Current
Load Circuit for tdis and ten
DOUT
3k
100pF
TEST POINT
5V WAVEFORM 2
WAVEFORM 1
LTC1290 • TC02



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