参数资料
型号: DC873A
厂商: Linear Technology
文件页数: 6/16页
文件大小: 0K
描述: BOARD SAR ADC LTC1867L
软件下载: QuikEval System
设计资源: DC873A Schematic
DC873A Design Files
标准包装: 1
系列: QuikEval™
ADC 的数量: 1
位数: 16
采样率(每秒): 175k
数据接口: MICROWIRE?,串行,SPI?
工作温度: 0°C ~ 70°C
已用 IC / 零件: LTC1867L
已供物品:
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LTC1863/LTC1867
14
18637fa
Figure 7. Example 2, CS/CONV Starts a Conversion With Short Active HIGH Pulse.
With CS/CONV Returning LOW Before the Conversion, the ADC Remains Powered Up.
INPUT VOLTAGE (V)
OUTPUT
CODE
1867 F09
111...111
111...110
100...001
100...000
000...000
000...001
011...110
011...111
FS – 1LSB
0V
UNIPOLAR
ZERO
FS = 4.096
1LSB = FS/2n
1LSB = (LTC1863) = 1mV
1LSB = (LTC1867) = 62.5μV
Figure 8. LTC1863/LTC1867 Bipolar Transfer
Characteristics (Two’s Complement)
Figure 9. LTC1863/LTC1867 Unipolar Transfer
Characteristics (Straight Binary)
S0
SD
0S
S1
COM UNI
SLP
MSB = D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
CS/CONV
SCK
SDI
SDO
(LTC1867)
Hi-Z
123456789
10
11
12
13
14
15
16
tCONV
D12
MSB = D15
D14
D13
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Hi-Z
1867 F07
tCONV
DON'T CARE
NOT NEEDED FOR LTC1863
tACQ
SDO
(LTC1863)
DON'T CARE
INPUT VOLTAGE (V)
0V
OUTPUT
CODE
(T
WO’S
COMPLIMENT)
–1
LSB
1867 F08
011...111
011...110
000...001
000...000
100...000
100...001
111...110
1
LSB
BIPOLAR
ZERO
111...111
FS/2 – 1LSB
–FS/2
FS = 4.096
1LSB = FS/2n
1LSB = (LTC1863) = 1mV
1LSB = (LTC1867) = 62.5μV
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