參數資料
型號: LTC2376IMS-18#PBF
廠商: Linear Technology
文件頁數: 9/24頁
文件大?。?/td> 0K
描述: IC ADC 18BIT 250KSPS 16-MSOP
產品培訓模塊: LTC2379- 18-/16-bit Fully-Differential SAR ADC Family Overview
標準包裝: 37
位數: 18
采樣率(每秒): 250k
數據接口: 串行,SPI?
轉換器數目: 1
功率耗散(最大): 4.25mW
電壓電源: 模擬和數字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-TFSOP(0.118",3.00mm 寬)
供應商設備封裝: 16-MSOP
包裝: 管件
輸入數目和類型: 1 個差分,雙極
配用: DC1783A-H-ND - BOARD SAR ADC LTC2376-18
DC1783A-D-ND - BOARD SAR ADC LTC2376-16
LTC2376-18
17
237618f
TIMING DIAGRAMS
Normal Mode, Multiple Devices
Figure 14 shows multiple LTC2376-18 devices operating
in normal mode (CHAIN = 0) sharing CNV, SCK and SDO.
By sharing CNV, SCK and SDO, the number of required
signals to operate multiple ADCs in parallel is reduced.
Since SDO is shared, the RDL/SDI input of each ADC must
be used to allow only one LTC2376-18 to drive SDO at a
time in order to avoid bus conflicts. As shown in Figure 14,
the RDL/SDI inputs idle high and are individually brought
low to read data out of each device between conversions.
When RDL/SDI is brought low, the MSB of the selected
device is output onto SDO.
237618 F14a
RDLB
RDLA
CONVERT
IRQ
DATA IN
DIGITAL HOST
CLK
CNV
LTC2376-18
SDO
A
SCK
RDL/SDI
CNV
LTC2376-18
SDO
B
SCK
RDL/SDI
CHAIN
BUSY
CHAIN
237618 F14
D15A
SDO
SCK
CNV
BUSY
CHAIN = 0
RDL/SDIB
RDL/SDIA
D15B
D14B
D1B
D0B
D13B
D14A
D13A
D1A
D0A
Hi-Z
tEN
tHSDO
tDSDO
tDIS
tSCKL
tSCKH
tCNVL
12
3
14
15
16
17
18
19
30
31
32
tSCK
CONVERT
tQUIET
tCONV
tHOLD
tBUSYLH
POWER-DOWN
ACQUIRE
POWER-DOWN
Figure 14. Normal Mode With Multiple Devices Sharing CNV, SCK and SDO
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