I2C WRITE OPERATION There" />
參數(shù)資料
型號(hào)： AD5391BSTZ-5
廠商： Analog Devices Inc
文件頁數(shù)： 21/44頁
文件大?。?/td> 0K
描述： IC DAC 12BIT 16CHAN 3V 52LQFP
產(chǎn)品培訓(xùn)模塊： Data Converter Fundamentals
DAC Architectures
產(chǎn)品變化通告： AD5390/1/2 Redesign Change 16/May/2012
設(shè)計(jì)資源： 8 to 16 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5390/1/2 (CN0029)
AD5390/91/92 Channel Monitor Function (CN0030)
標(biāo)準(zhǔn)包裝： 1
設(shè)置時(shí)間： 6µs
位數(shù)： 12
數(shù)據(jù)接口： I²C，串行
轉(zhuǎn)換器數(shù)目： 16
電壓電源： 單電源
功率耗散（最大）： 35mW
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 52-LQFP
供應(yīng)商設(shè)備封裝： 52-LQFP（10x10）
包裝： 托盤
輸出數(shù)目和類型： 16 電壓，單極
采樣率（每秒）： 167k
配用： EVAL-AD5391EBZ-ND - BOARD EVALUATION FOR AD5391
AD5390/AD5391/AD5392
Data Sheet
Rev. E | Page 28 of 44
I2C WRITE OPERATION
There are three specific modes in which data can be written to
the AD539x family of DACs.
4-BYTE MODE
When writing to the AD539x DACs, begin with an address byte
(R/W = 0), after which the DAC acknowledges that it is prepared
to receive data by pulling SDA low. The address byte is followed
by the pointer byte. This addresses the specific channel in the
DAC to be addressed and is also acknowledged by the DAC.
Address Bits A3 to A0 address all channels on the AD5390/
AD5391. Address Bits A2 to A0 address all channels on the
AD5392. Address Bit A3 is a zero on the AD5392. Two bytes
of data are then written to the DAC, as shown in Figure 33.
A STOP condition follows. This lets the user update a single
channel within the AD539x at any time and requires four bytes
of data to be transferred from the master.
REG0
DB13
DB12
DB11
DB10
DB8
DB9
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
REG1
1
0
A3
A2
A1
A0
1
AD1
AD0
R/W
SCL
SDA
SCL
SDA
START
CONDITION
BY
MASTER
ACK
BY
CONVERTER
ACK
BY
CONVERTER
ADDRESS BYTE
POINTER BYTE
MSB
ACK
BY
CONVERTER
ACK
BY
CONVERTER
STOP
CONDITION
BY
MASTER
MOST SIGNIFICANT DATA BYTE
LEAST SIGNIFICANT DATA BYTE
A/B
03773-
023
Figure 33. AD5390/AD5392 4-Byte Mode I2C Write Operation
REG0
DB11
DB10
DB9
DB8
DB6
DB7
DB5
DB4
DB3
DB2
DB1
DB0
0
REG1
1
0
A3
A2
A1
A0
1
AD1
AD0
R/W
SCL
SDA
SCL
SDA
START
CONDITION
BY
MASTER
ACK
BY
CONVERTER
ACK
BY
CONVERTER
ADDRESS BYTE
POINTER BYTE
MSB
ACK
BY
CONVERTER
ACK
BY
CONVERTER
STOP
CONDITION
BY
MASTER
MOST SIGNIFICANT DATA BYTE
LEAST SIGNIFICANT DATA BYTE
A/B
03773-
021
Figure 34. AD5391 4-Byte Mode I2C Write Operation
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