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參數(shù)資料
型號: ADG715BRU-REEL7
廠商: Analog Devices Inc
文件頁數(shù): 6/16頁
文件大?。?/td> 0K
描述: IC SWITCH OCTAL SPST 24TSSOP
產(chǎn)品培訓(xùn)模塊: Switch Fundamentals
標(biāo)準(zhǔn)包裝: 1,000
功能: 開關(guān)
電路: 8 x SPST - NO
導(dǎo)通狀態(tài)電阻: 4.5 歐姆
電壓電源: 單/雙電源
電壓 - 電源,單路/雙路(±): 2.7 V ~ 5.5 V,±2.5V
電流 - 電源: 10µA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 24-TSSOP
包裝: 帶卷 (TR)
ADG714/ADG715
–14–
REV.
SDA
SCL
SDA
SCL
SDA
SCL
SDA
SCL
A1
A0
A1
A0
A1
A0
A1
A0
ADG715
SDA
SCL
VDD
MASTER
RP
VDD
Figure 6. Multiple ADG715s On One Bus
-
SCLK
DIN
DOUT
ADG714
SYNC
TO
OTHER
SERIAL
DEVICES
SCLK
DIN
SYNC
SCLK
DIN
DOUT
ADG714
SYNC
SCLK
DIN
DOUT
ADG714
SYNC
VDD
R
Figure 7. Multiple ADG714 Devices in a Daisy-Chained Conguration
APPLICATIONS
Multiple Devices On One Bus
Figure 6 shows four ADG715 devices on the same serial bus.
Each has a different slave address since the state of their A0 and
A1 pins is different. This allows each switch to be written to or
read from independently.
Daisy-Chaining Multiple ADG714s
A number of ADG714 switches may be daisy-chained simply by
using the DOUT pin. Figure 7 shows a typical implementation.
The
SYNC pin of all three parts in the example are tied
together. When
SYNC is brought low, the input shift registers
of all parts are enabled, data is written to the parts via DIN, and
clocked through the shift registers. When the transfer is complete,
SYNC is brought high and all switches are updated simulta-
neously. Further shift registers may be added in series.
Power Supply Sequencing
When using CMOS devices, care must be taken to ensure correct
power-supply sequencing. Incorrect power-supply sequencing
can result in the device being subjected to stresses beyond those
maximum ratings listed in the data sheet. Digital and analog inputs
should always be applied after power supplies and ground. In dual
supply applications, if digital or analog inputs may be applied to
the device prior to the VDD and VSS supplies, the addition of a
Schottky diode connected between VSS and GND will ensure
that the device powers on correctly. For single supply operation,
VSS should be tied to GND as close to the device as possible.
Decoding Multiple ADG714s Using an ADG739
The dual 4-channel ADG739 multiplexer can be used to multiplex
a single chip select line to provide chip selects for up to four
C
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