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ADAQ Datasheet(PDF) – Analog Devices

Stability while driving capacitive loads is another benefit of this design over CMOS rail-to-rail amplifiers. If the AD is going to be used at extreme temperatures and supply voltages, an external output transistor can be used to minimize power dissipation on the chip via datashet “BOOST” pin. For applications in which the analog signal is unipolar, the ADGA can be operated from a single rail power supply. This multiplexer also features high switching speeds and low RON.

This is useful for driving coax cable or large FET transistors. High switching speed also makes the device suitable for video signal switching.

The ADGA switches are turned on with a logic low on the appropriate control input. The ADGA switches one of 16 inputs to a common output, depending on the state of four binary addresses and an enable input.


The device is fully specified with a single 12 V supply. When they are on, each switch conducts equally well in both directions and has an input signal range that extends to the power supplies. Product Highlights Extended signal range. Full-scale settling to 0. The FET-input stage results in a low bias current of 50 pA. Home Products News contact. A guaranteed maximum input offset voltage of 0.


In addition, the AD provides excellent dc precision. These switches also feature high switching speeds and low RON. Common-mode rejection is a minimum of 78 dB. Applications Audio and video switching Battery-powered systems Dafasheet equipment Communication systems. Each VR has its own VR latch that holds its programmed resistance value.

The only external components that are required catasheet addition to normal transient protection circuitry are three low cost capacitors which are used in the DAC output filter. The devices can operate comfortably anywhere in the These VR latches are updated from an internal serial-to-parallel shift register that is loaded from a standard 3-wire serial-input digital interface.

The on-resistance profile is very flat over the full analog input range, ensuring good linearity and low vatasheet when switching audio signals. To provide flexibility to the system designer, the AD can be operated in either latched or transparent mode.


All switches exhibit break-before-make switching action for use in multiplexer applications. For users of 3. This allows designs to achieve higher efficiencies and to transfer more power to the load than previously possible without the use of discrete components. It is complete, including amplifier, resistor network and TTL-compatible latched inputs, and requires no external components.

Applications Mechanical potentiometer replacement Instrumentation: Ar707aq first three bits are decoded to determine which VR latch is loaded with the last eight bits of the data-word when the CS strobe is returned to logic high. Each switch conducts equally well in both directions when ON and each has an input signal range that extends to the supplies.

CMOS construction ensures ultralow power dissipation, making the device ideally suited for portable, battery-powered instruments. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch.

By using a bipolar front end, lower noise and higher accuracy than those of CMOS designs have been achieved. In the off condition, signal levels up to the supplies are blocked.