參數(shù)資料
型號: LTC2485CDD#PBF
廠商: Linear Technology
文件頁數(shù): 8/40頁
文件大?。?/td> 0K
描述: IC ADC 24BIT I2C 10-DFN
標準包裝: 121
位數(shù): 24
采樣率(每秒): 6.8
數(shù)據(jù)接口: I²C,串行
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 480µW
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: 10-WFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 10-DFN(3x3)
包裝: 管件
輸入數(shù)目和類型: 1 個差分,雙極
產(chǎn)品目錄頁面: 1348 (CN2011-ZH PDF)
配用: DC956A-ND - BOARD DELTA SIGMA ADC LTC2485
LTC2485
16
2485fc
APPLICATIONS INFORMATION
Initiating a New Conversion
When the LTC2485 nishes a conversion, it automatically
enters the sleep state. Once in the sleep state, the device is
ready for a Read operation. After the device acknowledges
a Read request, the device exits the sleep state and enters
the data output state. The data output state concludes
and the LTC2485 starts a new conversion once a STOP
condition is issued by the master or all 32 bits of data are
read out of the device.
During the data read cycle, a stop command may be issued
by the master controller in order to start a new conversion
and abort the data transfer. This stop command must be
issued during the ninth clock cycle of a byte read when
the bus is free (the ACK/NAK cycle).
LTC2485 Address
The LTC2485 has two address pins, enabling one in 6
possible addresses, as shown in Table 4.
Table 4. LTC2485 Address Assignment
CA1
CA0/f0 *
ADDRESS
LOW
HIGH
001 01 00
LOW
Floating
001 01 01
Floating
HIGH
001 01 11
Floating
010 01 00
HIGH
010 01 10
HIGH
Floating
010 01 11
* CA0/f0 is treated as HIGH when driven by a valid external clock.
InadditiontothecongurableaddresseslistedinTable4,the
LTC2485 also contains a global address (1110111) which
may be used for synchronizing multiple LTC2485s.
SLEEP
DATA OUTPUT
START BY
MASTER
ACK BY
LTC2485
ACK BY
SUB LSBs
MASTER
NAK BY
MASTER
LSB
R
MSB
SGN
D23
7
89
1
2
9
1
2
3
4
5
6
7
8
9
1
7-BIT
ADDRESS
2485 F04
Figure 4. Timing Diagram for Reading from the LTC2485
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