Datasheet ADG428, ADG429 (Analog Devices)

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LC2MOS Latchable 4-/8-Channel High Performance Analog Multiplexers ADG428/ADG429 FEATURES FUNCTIONAL BLOCK DIAGRAMS 44 V Supply Maximum Ratings VSS to VDD Analog Signal Range Low On Resistance (60
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typ) ADG428 ADG429 Low Power Consumption (1.6 mW max) S1 S1A Low Charge Injection (<4 pC typ) DA Fast Switching S4A Break-Before-Make Switching Action D Plug-In Replacement for DG428/DG429 S1B APPLICATIONS DB S8 S4B Automatic Test Equipment Data Acquisition Systems Communication Systems DECODERS/DRIVERS DECODERS/DRIVERS Avionics and Military Systems LATCHES LATCHES Microprocessor Controlled Analog Systems WR RS WR RS Medical Instrumentation A2 A1 A0 EN A1 A0 EN GENERAL DESCRIPTION PRODUCT HIGHLIGHTS
The ADG428 and ADG429 are monolithic CMOS analog 1. Extended Signal Range multiplexers comprising eight single channels and four differen- The ADG428/ADG429 are fabricated on an enhanced tial channels respectively. On-chip address and control latches LC2MOS process, giving an increased signal range that ex- facilitate microprocessor interfacing. The ADG428 switches one tends to the supply rails. of eight inputs to a common output as determined by the 3-bit 2. Low Power Dissipation binary address lines A0, A1 and A2. The ADG429 switches one of four differential inputs to a common differential output as 3. Low RON determined by the 2-bit binary address lines A0 and A1. An EN 4. Single/Dual Supply Operation input on both devices is used to enable or disable the device. 5. Single Supply Operation When disabled, all channels are switched OFF. All the control For applications where the analog signal is unipolar, the inputs, address and enable inputs are TTL compatible over the ADG428/ADG429 can be operated from a single rail power full specified operating temperature range. This makes the part supply. The parts are fully specified with a single +12 V suitable for bus-controlled systems such as data acquisition sys- power supply and will remain functional with single supplies tems, process controls, avionics and ATEs because the TTL- as low as +5 V. compatible address latches simplify the digital interface design and reduce the board space required. The ADG428/ADG429 are designed on an enhanced LC2MOS process that provides low power dissipation yet gives high switching speed and low on resistance. Each channel conducts equally well in both directions when ON and has an input signal range that extends to the supplies. In the OFF condition, signal levels up to the supplies are blocked. All channels exhibit break-before-make switching action, preventing momentary shorting when switching channels. Inherent in the design is low charge injection for mini- mum transients when switching the digital inputs. The ADG428/ADG429 are improved replacements for the DG428/DG429 Analog Multiplexers. REV. C 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
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