ADG728 CMOS, Low Voltage, 2 Wire, Serially Controlled Single 8 to 1 Matrix Switch

The ADG728 is a CMOS analog matrix switch with a serially controlled 2-wire interface. It is an 8-channel matrix switch. On resistance is closely matched between switches and very flat over the full signal range. This part can operate equally well as a multiplexer, demultiplexer or switch array and the input signal range extends to the supplies.  The ADG728 and ADG729 utilize a 2-wire serial interface that is compatible with the I2C™ interface standard. Both have two external address pins (A0 and A1). This allows the 2 LSBs of the 7-bit slave address to be set by the user. Four of each of the devices can be connected to the one bus. The ADG728 also has a RESET pin that should be tied high if not in use. Each channel is controlled by one bit of an 8-bit word. This 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. On power-up of the device, all switches will be in the 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. The ADG728 and ADG729 are available in 16-lead TSSOP packages. Product Highlights 2-Wire Serial Interface. Single Supply Operation. The ADG728 and ADG729 are fully specified and guaranteed with 3 V and 5 V supply rails. Low On Resistance 2.5 Ω typical. Any configuration of switches may be on at any one time. Guaranteed Break-Before-Make Switching Action. Small 16-Lead TSSOP Package. Applications Data Acquisition Systems Communications Systems Relay Placement Audio and Video Switching Automatic Test Equipment

Each channel is controlled by one bit of an 8-bit word. This 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.

On power-up of the device, all switches will be in the 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.

The ADG728 and ADG729 are available in 16-lead TSSOP packages.

Applications
  • Data Acquisition Systems
  • Communications Systems
  • Relay Placement
  • Audio and Video Switching
  • Automatic Test Equipment
Features and Benefits
  • 2-Wire Serial Interface
  • 2.7 V to 5.5 V Single Supply
  • 2.5 Ω On Resistance
  • 0.75 Ω On-Resistance Flatness
  • 100 pA Leakage Currents
  • Single 8-to-1 Matrix Switch
  • Power-On Reset
  • Small 16-Lead TSSOP Package
  • Qualified for Automotive Applications
Switches & Multiplexers
Data Sheets
Documentnote
ADG728/ADG729: CMOS, Low Voltage, 2-Wire Serially Controlled, Matrix Switches Datasheet (Rev. C)PDF 151 kB
Application Notes
Documentnote
AN-1024: How to Calculate the Settling Time and Sampling Rate of a Multiplexer (Rev. 0)PDF 210 kB
User Guides
Documentnote
UG-945: Evaluation Board for 16-Lead TSSOP Devices in the Switches and Multiplexers Portfolio (Rev. 0)PDF 291.91 K
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADG728BRU Last Time Buy16 ld TSSOPOTH 96-40 to 85C00N
ADG728BRUZ Production16 ld TSSOPOTH 96-40 to 85C2.331.9Y
ADG728BRUZ-REEL7 Production16 ld TSSOPREEL 1000-40 to 85C01.9Y
ADG728WBRUZ-REEL7 Production16 ld TSSOPREEL 1000-40 to 85C02.18Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-16TSSOPEBZEvaluation Board99Y
Reference Materials
ADG728/ADG729: CMOS, Low Voltage, 2-Wire Serially Controlled, Matrix Switches Datasheet (Rev. C) adg728
AN-1024: 如何计算多路复用器的建立时间和采样速率 (Rev. 0) adg904
AN-1024: How to Calculate the Settling Time and Sampling Rate of a Multiplexer (Rev. 0) adg904
UG-945: Evaluation Board for 16-Lead TSSOP Devices in the Switches and Multiplexers Portfolio (Rev. 0) adg5412bf
Switches and Multiplexers Product Selection Guide adg2128
CMOS Switches Offer High Performance in Low Power, Wideband Applications ad75019