參數(shù)資料
型號(hào): LTC1401IS8
廠商: LINEAR TECHNOLOGY CORP
元件分類: ADC
英文描述: Complete SO-8, 12-Bit, 200ksps ADC with Shutdown
中文描述: 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
封裝: 0.150 INCH, PLASTIC, SOP-8
文件頁(yè)數(shù): 6/20頁(yè)
文件大?。?/td> 352K
代理商: LTC1401IS8
6
LTC1401
PI
FU
CTIO
N
S
U
U
V
CC
(Pin 1):
Positive Supply, 3V. Bypass to GND (10
μ
F
tantalum in parallel with 0.1
μ
F ceramic).
A
IN
(Pin 2):
Analog Input. 0V to 2.048V.
V
REF
(Pin 3):
1.2V Reference Output. Bypass to GND
(10
μ
F tantalum in parallel with 0.1
μ
F ceramic).
GND (Pin 4):
Ground. GND should be tied directly to an
analog ground plane.
D
OUT
(Pin 5):
The A/D conversion result is shifted out from
this pin.
LTC1401 BD01
12-BIT CAPACITIVE DAC
COMP
SUCCESSIVE APPROXIMATION
REGISTER/PARALLEL TO
SERIAL CONVERTER
ZEROING SWITCH
CONTROL
LOGIC
1.20V REF
D
OUT
V
CC
GND
SHDN
CONV
CLK
V
REF
A
IN
C
SAMPLE
12
FU
CTIO
AL BLOCK DIAGRAW
U
U
LTC1401 TC01
D
OUT
D
OUT
3k
3k
C
LOAD
C
LOAD
Hi-Z TO V
OH
V
OL
TO
V
OH
V
OH
TO Hi-Z
Hi-Z TO V
OL
V
OH
TO
V
OL
V
OL
TO Hi-Z
3V
TEST CIR
CLK (Pin 6):
Clock. This clock synchronizes the serial data
transfer. A minimum CLK pulse of 60ns signals the ADC to
wake up from Nap or Sleep mode.
CONV (Pin 7):
Conversion Start Signal. This active high
signal starts a conversion on its rising edge. Keeping CLK
low and pulsing CONV two/four times will put the ADC into
Nap/Sleep mode.
SHDN (Pin 8):
Shutdown Input. Pull this pin Low to put the
ADC in Shutdown mode and save power (REFRDY will go
Low). The device will draw 4.5
μ
A in this mode.
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