參數(shù)資料
型號: LTC1199CS8
廠商: Linear Technology
文件頁數(shù): 19/28頁
文件大?。?/td> 0K
描述: IC ADC 10BIT 450KHZ W/SD 8-SOIC
標準包裝: 100
位數(shù): 10
采樣率(每秒): 450k
數(shù)據(jù)接口: MICROWIRE?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 25mW
電壓電源: 單電源
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOIC
包裝: 管件
輸入數(shù)目和類型: 1 個單端,單極
26
LTC1197/LTC1197L
LTC1199/LTC1199L
Battery Current Monitor
The LTC1197L/LTC1199L are ideal for 3V systems. Fig-
ure 14 shows a 2.7V to 4V battery current monitor that
draws only 45
A at 3V from the battery it monitors,
sampling at a 1Hz rate. To minimize supply current, the
microprocessor uses the LTC1152 SHDN pin to turn on
the op amp prior to making a measurement and then turn
it off after the measurement has been made. The battery
current is sensed with the 0.005
resistor and amplified
by the LTC1152. The LTC1197L digitizes the amplifier
output and sends it to the microprocessor in serial
format. After each sample the LTC1197L automatically
powers down. The LT1004 provides the full-scale refer-
ence for the ADC. The circuit’s 45
A supply current is
dominated by the reference and the op amp. The circuit
can be located near the battery and data transmitted
serially to the microprocessor.
Figure 14. This 0A to 2A Battery Current Monitor Draws Only 45
A from a 3V Battery
TYPICAL APPLICATIO S
U
+
LTC1152
SHDN
240k
56k
TO
P
100
2k
0.005
2A FULL
SCALE
500pF
2.7V
TO 4V
1
F
1
F
0.1
F
LT1004-1.2
1
2
3
4
8
7
6
5
CS
+IN
–IN
GND
VCC
CLK
DOUT
VREF
LTC1197L
L
O
A
D
+
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