參數(shù)資料
型號(hào): ADG729
廠商: Analog Devices, Inc.
英文描述: CMOS , Low Voltage, 2 Wire, Serially Controlled Matrix Switches(CMOS,低電壓,二線,串行控制四通道矩陣開關(guān))
中文描述: 的CMOS,低電壓,2線,串行控制矩陣開關(guān)(的CMOS,低電壓,二線,串行控制四通道矩陣開關(guān))
文件頁數(shù): 1/10頁
文件大小: 139K
代理商: ADG729
ADG728/ADG729
a
Prelimnary Technical Data
REV. PrC August ‘99
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, PO. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 1999
CMOS, LowVoltage, 2 Wre,
Serially Controlled Matrix Swtches
PRELMNARY
DATA
resistance is closely matched between switches and very
flat over the full signal range. T hese parts can operate
equally well as either Multiplexers, De-Multiplexers or
Switch arrays and the input signal range extends to the
supplies.
T he ADG728 and ADG729 utilize a two wire serial
interface that is compatible with the I
2
C
T M
interface
standard. Both have two external address pins (A0 and
A1). T his allows the 2 LSB’s of the 7-bit slave address to
be set by the user. Four of each devices can be connected
to the one bus. T he ADG728 also has a
RESET
pin, this
should be tied high if not in use.
Each channel is controlled by one bit of an 8 bit word.
T his means that these devices may be used in a number of
different configurations, all, any or none of the channels
may be on at any one time.
TECHNCAL
FEATURES
Two Wire Serial Interface
+2.7 V to +5.5 V Single Supply
Low On Resistance (4
)
Low On Resistance Flatness
Low Leakage
Single 8 to 1 Matrix Switch ADG728
Dual 4 to 1 Matrix Switch ADG729
Power On Reset
Fast Switching Times
Low Power Consumption
APPLICATIONS
Data Acquisition Systems
Communication Systems
Relay replacement
Audio and Video Switching
G E NE R A L D E SC R IP T ION
T he ADG728 and ADG729 are CMOS analog matrix
switches with a serially controlled two wire interface. T he
ADG728 is an 8 channel matrix switch, while the
ADG729 is a dual 4 channel matrix switches. On
P R OD UC T H IG H L IG H T S
1. T wo Wire Serial Interface.
2. Single Supply Operation. T he ADG728 and ADG729
are fully specified and guaranteed with +3 V and +5 V
supply rails.
3. Low R
ON
(4
).
4. Any configuration of switches may be on at any one
time.
5. Break before make switching action.
6. Small 16 lead T SSOP package.
F UNC T IONA L BL OC K D IA GR A MS
I
2
C is a trademark of Philips Corporation.
S1
SDA
D
SCL
A0
INPUT REGISTER
ADG728
S1A
SDA
DA
SCL
S4A
S1B
S4B
DB
A0
ADG729
A1
INPUT REGISTER
A1
RESET
OFF condition and the internal shift register will contain
all zeros.
All channels exhibit break before make switching action
preventing momentary shorting when switching channels.
T he ADG728 and ADG729 are available in a 16 lead
T SSOP package.
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