參數(shù)資料
型號(hào)： LTC1098L
廠商： Linear Technology Corporation
元件分類： 串行ADC
英文描述： Micropower Sampling 8-Bit I/O A/D Converters(3V，微功耗，采樣8位串行I/O模數(shù)轉(zhuǎn)換器)
中文描述： 微采樣8位I /辦公自動(dòng)化/ D轉(zhuǎn)換器（3V供電，微功耗，采樣8位串行的I / O模數(shù)轉(zhuǎn)換器）
文件頁(yè)數(shù)： 26/28頁(yè)
文件大?。?/td> 368K
代理商： LTC1098L
26
LTC1096/LTC1096L
LTC1098/LTC1098L
U
S
A
O
PPLICATI
TYPICAL
Remote or Isolated Systems
Figure 16 shows a floating system that sends data to a
grounded host system. The floating circuitry is isolated by
two optoisolators and powered by a simple capacitor
diode charge pump. The system has very low power
requirements because the LTC1096 shuts down between
conversions and the optoisolators draw power only when
data is being transferred. The system consumes only
50
μ
A at a sample rate of 10Hz (1ms on-time and 99ms off-
time). This is easily within the current supplied by the
charge pump running at 5MHz. If a truly isolated system
is required, the system’s low power simplifies generating
an isolated supply or powering the system from a battery.
Figure 16. Power for This Floating A/D System Is Provided by a Simple Capacitor Diode Charge Pump. The Two Optoisolators
Draw No Current Between Samples, Turning On Only to Send the Clock and Receive Data
LTC1096
+IN
–IN
D
OUT
CS
CLK
V
CC
GND
V
REF
75k
LT1004-2.5
1k
20k
0.1
μ
F
1N5817
0.022
μ
F
47
μ
F
1N5817
1N5817
0.001
μ
F
2kV
5MHz
100k
300
10k
500k
ANALOG
INPUT
FLOATING SYSTEM
CLK
DATA
100k
LTC1096/8 F16
2N3904
+
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