參數(shù)資料
型號: LTC1283ACN
廠商: LINEAR TECHNOLOGY CORP
元件分類: ADC
英文描述: 3V Single Chip 10-Bit Data Acquisition System
中文描述: 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP20
封裝: PLASTIC, DIP-20
文件頁數(shù): 22/24頁
文件大?。?/td> 452K
代理商: LTC1283ACN
22
LTC1283
U
S
A
O
PPLICATI
TYPICAL
A “Quick Look” Circuit for the LTC1283
SNEAK-A-BIT is a trademark of Linear Technology Corp.
SNEAK-A-BIT
TM
The LTC1283’s unique ability to software select the polar-
ity of the differential inputs and the output word length is
used to achieve one more bit of resolution. Using the
circuit below with two conversions and some software, a
2’s complement 10-bit + sign word is returned to memory
inside the MPU. The MC68HC05C4 was chosen as an
example; however, any processor could be used.
Two 10-bit unipolar conversions are performed: the first
(by reversing the polarity of the inputs). The sign of the
input is determined by which of the two spans contain it.
Then the resulting number (ranging from –1023 to 1023
decimal) is converted to 2’s complement notation and
stored in RAM.
SNEAK-A-BIT Code
LTC1283 TA05
MC68HC05C4
SCK
MOSI
MISO
CO
–3V
0.1
μ
F
1MHz
CLOCK
OTHER
CHANNELS
OR
SNEAK-A-BIT
INPUTS
3V
LTC1283
CHO
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
DGND
V
CC
ACLK
SCLK
D
IN
D
OUT
CS
REF
+
REF
V
AGND
10
μ
F
V
IN
–3V TO 3V
SNEAK-A-BIT Circuit
D
OUT
from LTC1283 in MC68HC05C4
B10 B9
B8
B7
B6
B5
B4
B3
SIGN
LSB
LTC1283 TA07
B2
B1
B0
FILLED WITH 0’s
LOCATION $77
LOCATION $87
D
IN
Words for LTC1283
0
0
1
1
1
1
1
1
UNI
LTC1283 TA08
D
IN 1
MSBF
WORD
LENGTH
(ODD/SIGN)
MUX ADDR.
0
1
1
1
1
1
1
1
D
IN 2
0
0
1
1
1
1
1
1
D
IN 3
LTC1283 TA03
LTC1283
0.1
μ
F
4.7
μ
F
f
CHO
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
DGND
V
IN
{
TO
OSCILLOSCOPE
CD4520
CLK
EN
Q1
Q2
Q3
Q4
RESET
V
SS
CLOCK IN
500kHz MAX
3V
V
CC
ACLK
SCLK
D
IN
D
OUT
CS
REF
+
REF
V
AGND
V
DD
RESET
Q4
Q3
Q2
Q1
EN
CLK
f/64
相關(guān)PDF資料
PDF描述
LTC1283ACS 3V Single Chip 10-Bit Data Acquisition System
LTC1283C 3V Single Chip 10-Bit Data Acquisition System
LTC1283CN 3V Single Chip 10-Bit Data Acquisition System
LTC1283CS 3V Single Chip 10-Bit Data Acquisition System
LTC1283 3V Single Chip 10-Bit Data Acquisition System(3V,單片,10位數(shù)據(jù)采集系統(tǒng))
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