參數(shù)資料
型號(hào): LTC1278-4CSW
廠商: LINEAR TECHNOLOGY CORP
元件分類: ADC
英文描述: 12-Bit, 500ksps Sampling A/D Converter with Shutdown
中文描述: 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24
封裝: 0.300 INCH, PLASTIC, SO-24
文件頁數(shù): 7/16頁
文件大小: 329K
代理商: LTC1278-4CSW
7
LTC1278
RD (Pin 20):
READ Input. This enables the output
drivers when CS is low.
CS (Pin 21):
The CHIP SELECT input must be low for the
ADC to recognize CONVST and RD inputs.
BUSY (Pin 22):
The BUSY output shows the converter
status. It is low when a conversion is in progress.
V
SS
(Pin 23):
Negative Supply. –5V for bipolar opera-
tion. Bypass to AGND with 0.1
μ
F ceramic. Analog
ground for unipolar operation.
AV
DD
(Pin 24):
Positive Supply, 5V. Bypass to AGND
(10
μ
F tantalum in parallel with 0.1
μ
F ceramic).
A
IN
(Pin 1):
Analog Input. 0V to 5V (Unipolar),
±
2.5V
(Bipolar).
V
REF
(Pin 2):
2.42V Reference Output. Bypass to AGND
(10
μ
F tantalum in parallel with 0.1
μ
F ceramic).
AGND (Pin 3):
Analog Ground.
D11 to D4 (Pins 11 to 4):
Three-State Data Outputs.
D11 is the Most Significant Bit.
DGND (Pin 12):
Digital Ground.
D3 to D0 (Pins 13 to 16):
Three-State Data Outputs.
DV
DD
(Pin 17 ):
Digital Power Supply, 5V. Tie to AV
DD
pin.
SHDN (Pin 18):
Power Shutdown.
CONVST (Pin 19):
Conversion Start Signal. This active
low signal starts a conversion on its falling edge (to
recognize CONVST, CS has to be low).
PU
U
U
12-BIT CAPACITIVE DAC
COMPARATOR
2.42V REF
V
REF
C
SAMPLE
SUCCESSIVE APPROXIMATION
REGISTER
OUTPUT LATCHES
D11
D0
BUSY
CONTROL LOGIC
CS
CONVST
RD
SHDN
INTERNAL
CLOCK
ZEROING
SWITCH
DV
DD
V
SS
(0V FOR UNIPOLAR MODE
OR –5V FOR BIPOLAR MODE)
AV
DD
A
IN
AGND
DGND
12
12
LTC1278 BD
FU
U
W
相關(guān)PDF資料
PDF描述
LTC1278-4I 12-Bit, 500ksps Sampling A/D Converter with Shutdown
LTC1278-4IN 12-Bit, 500ksps Sampling A/D Converter with Shutdown
LTC1278-4ISW 12-Bit, 500ksps Sampling A/D Converter with Shutdown
LTC1278-5C 12-Bit, 500ksps Sampling A/D Converter with Shutdown
LTC1278-5CN 12-Bit, 500ksps Sampling A/D Converter with Shutdown
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