参数资料
型号: LTC1598LIG#PBF
厂商: Linear Technology
文件页数: 5/24页
文件大小: 0K
描述: IC A/D CONV 12BIT SRL 8CH 24SSOP
标准包装: 59
位数: 12
采样率(每秒): 10.5k
数据接口: MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 480µW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-SSOP(0.209",5.30mm 宽)
供应商设备封装: 24-SSOP
包装: 管件
输入数目和类型: 8 个单端,单极
13
LTC1594L/LTC1598L
15948lfb
APPLICATIONS INFORMATION
WU
U
Operation with DIN and DOUT Tied Together
The LTC1594L/LTC1598L can be operated with DIN and
DOUT tied together. This eliminates one of the lines
required to communicate to the microprocessor (MPU).
Data is transmitted in both directions on a single wire.
The processor pin connected to this data line should be
configurable as either an input or an output. The
LTC1594L/LTC1598L will take control of the data line
after CS falling and before the 6th falling CLK while the
processor takes control of the data line when CS is high
(see Figure 3). Therefore the processor port line must be
switched to an input with CS being low to avoid a conflict.
Separate Chip Selects for MUX and ADC
The LTC1594L/LTC1598L provide separate chip selects,
CSMUX and CSADC, to control MUX and ADC separately.
This feature not only provides the flexibility to select a
particular channel once for multiple conversions (see
Figure 4) but also maximizes the sample rate up to
20ksps (see Figure 5).
Figure 4. Selecting a Channel Once for Multiple Conversions
CLK
EN
D1
D2
CSADC
CSMUX
B5
B6
B7
B8
B9
B10
B11
Hi-Z
DOUT
CH0 TO
CH7
DIN
tCONV
Hi-Z
tsuCS
NULL
BIT
D0
B4
B3
B2
B1
B0
tSMPL
tON
B5
B6
B7
B8
B9
B10
B11
Hi-Z
tCONV
tsuCS
NULL
BIT
D0
B4
B3
B2
B1
B0
tSMPL
ADCIN =
MUXOUT
COM = GND
1594L/98L F04
DON’T CARE
1
2
3
456
CS
CLK
DATA (DIN/DOUT)
EN
D2
D1
D0
B11
B10
LTC1594L/LTC1598L CONTROLS DATA LINE AND SENDS
A/D RESULT BACK TO MPU
MPU CONTROLS DATA LINE AND SENDS
MUX ADDRESS TO LTC1594L/LTC1598L
PROCESSOR MUST RELEASE DATA
LINE AFTER CS FALLING AND
BEFORE THE 6TH FALLING CLK
LTC1594L/LTC1598L TAKES CONTROL OF DATA
LINE AFTER CS FALLING AND BEFORE THE
6TH FALLING CLK
1594L/98L F03
tsuCS
Figure 3. LTC1594L/LTC1598L Operation with DIN and DOUT Tied Together
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