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LTC1851 데이터시트(PDF) 28 Page - Linear Technology

부품명 LTC1851
상세설명  8-Channel, 10-Bit/12-Bit, 1.25Msps Sampling ADCs
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LTC1851 데이터시트(HTML) 28 Page - Linear Technology

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LTC1850/LTC1851
18501f
©LINEAR TECHNOLOGY CORPORATION 2001
LT/TP 0303 2K • PRINTED IN THE USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com
TYPICAL APPLICATIO
Data buffering using two IDT7202LA15 1k x 9-bit FIFOs
allows rapid collection of 1024 samples and simple inter-
face to low power, low speed, 8-bit microcontrollers. Data
and channel information are clocked in simultaneously
and read out as two bytes using READ HIGH FIFO and
READ LOW FIFO lines. In the event of bus contention,
resistors limit peak output current. If both FIFOs are read
completely or reset before a burst of conversions, the
empty, half full, and full flags from only one FIFO need to
be monitored. The retransmit inputs may also be tied
together. Retransmit may be used to read data repeatedly,
allowing a memory limited processor to perform trans-
form and filtering functions that would otherwise be
difficult.
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC1410
12-Bit, 1.25Msps,
±5V ADC
71.5dB SINAD at Nyquist, 150mW Dissipation
LTC1415
12-Bit, 1.25Msps, Single 5V ADC
55mW Power Dissipation, 72dB SINAD
LTC1418
14-Bit, 200ksps, Single 5V ADC
15mW, Serial/Parallel
±10V
LTC1419
Low Power 14-Bit, 800ksps ADC
True 14-Bit Linearity, 81.5dB SINAD, 150mW Dissipation
LTC1604
16-Bit, 333ksps,
±5V ADC
90dB SINAD, 220mW Power Dissipation, Pin Compatible with LTC1608
LTC1852/LTC1853
10-Bit/12-Bit, 8-Channel, 400ksps ADCs
Pin-Compatible, Programmable Multiplexer and Sequencer
BUSY
DIFFOUT/S6
A2OUT/S5
A1OUT/S4
A0OUT/S3
D11/S2
D10/S1
D9/S0
D8
D7
D6
D5
D4
D3
D2
D1
D0
33
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
M1
M0
SHDN
CS
CONVST
RD
WR
DIFF
A2
A1
A0
UNI/BIP
PGA
48
36
47
46
45
44
43
42
41
40
39
38
37
OGND 34
18501 TA01
OVDD 35
1.6384X
REFCOMP
REFIN
REFOUT
12
11
10
2.5V
4.096V
COM
CH7
CH6
CH5
CH4
CH3
CH2
CH1
CH0
14
VDD
9
8
7
6
5
4
3
2
1
INPUT
CONFIGURATION:
ALL 8 CHANNELS
SINGLE ENDED TO COM
CH0–CH7: 0V TO 4.096V
15
0.1
µF
VDD
5V
10
µF
GND
GND
13
16
1
µF
0.1
µF
10
µF
0.1
µF
10
µF
5V
5V
5V
5V
*CONVERT
CLOCK
OUTPUT
DRIVERS
DATA
LATCHES
REF AMP
8-CHANNEL
MULTIPLEXER
2.5V
REFERENCE
INTERNAL
CLOCK
LTC1851
CONTROL LOGIC
AND
PROGRAMMABLE
SEQUENCER
12-BIT
SAMPLING
ADC
+
D8
D7
D6
D5
D4
D3
D2
D1
D0
WR
FF
RS
D7
D6
D5
D4
D3
D2
D1
D0
2
24
25
26
27
3
4
5
6
1
8
22
13
18
18
17
16
12
11
10
9
15
21
20
23
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
R
EF
HF
RT
XI
GND
READ_HIGH_FIFO
HIGH_FIFO_EMPTY
HIGH_FIFO_HALF_FULL
HIGH BYTE_FIFO_RETRANSMIT
7
14
28
0.1
µF
5V
8
× 1k
HIGH_FIFO_FULL_FLAG
LOW_FIFO_FULL_FLAG
FIFO_RESET
D8
D7
D6
D5
D4
D3
D2
D1
D0
WR
FF
RS
2
24
25
26
27
3
4
5
6
1
8
22
13
19
18
17
16
12
11
10
9
15
21
20
23
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
R
EF
HF
RT
XI
GND
READ_LOW_FIFO
LOW_FIFO_EMPTY
LOW_FIFO_HALF_FULL
LOW BYTE_FIFO_RETRANSMIT
7
14
28
0.1
µF
5V
8
× 1k
8-BIT
DATA BUS
IDT7202LA15
IDT7202LA15
UP TO 1024


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