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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. 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 the “BOOST” pin. The only external components that are required in addition to normal transient protection circuitry are three low cost capacitors which are used in the DAC output filter.
In the off condition, signal levels up to the supplies are blocked. The FET-input stage results in a low bias current of 50 pA. In addition, the AD provides excellent dc precision. If you have questions or suggestions,please leave us a message,we will reply you as soon as we can!
When they are on, each switch conducts equally well in both directions and has an input signal range that extends to the power supplies. These dtaasheet perform the same electronic ad707aqq function as a potentiometer or variable resistor. It is complete, including amplifier, resistor network and TTL-compatible latched inputs, and requires no external components.
A guaranteed maximum input offset voltage of 0. A serial data output pin at the opposite end of the serial register AD only allows simple daisy chaining in multiple VR applications without requiring additional external decoding logic.
The on-resistance profile is very flat over the full analog input range, ensuring good linearity and low distortion when switching audio signals. These switches also feature high switching speeds and low RON.
Home Products News contact. For applications such as transformers that require driving inductive loads, increases in efficiency are also possible. For applications in which the analog signal is unipolar, the ADGA can be operated from a single rail power supply. Product Highlights Extended signal range. Each VR has its own VR latch that holds its programmed resistance value.
This is useful for driving coax cable or large FET transistors. 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.
The 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.
The ADGA switches one of 16 inputs to a common output, depending on the state of four binary addresses and an enable input. Common-mode rejection is a minimum of 78 dB. You can contact us any way that is convenient for you. It provides a high precision, fully integrated, low cost single-chip solution for generating current loop signals in a compact pin SOIC or PDIP package. Applications Battery-operated instrumentation Servo amplifiers Actuator drives Sensor conditioners Power supply control.
By using a bipolar front end, lower noise and higher accuracy than those of CMOS designs have been achieved.
AD Datasheet and Product Info | Analog Devices
Full-scale settling to 0. The ADGA switches are turned on with a logic low on the appropriate control input. All switches exhibit break-before-make switching action for use in multiplexer applications. The small signal bandwidth is kHz at a gain of Inherent in the design is low charge injection for minimum transients when switching the digital inputs.
To provide flexibility to the system designer, the AD can be operated in either latched or transparent mode.
Analog Devices also offers over 30 other high speed amplifiers from the low noise AD 1. Low charge inject is inherent in the design. The devices can operate comfortably anywhere in the This yields performance that can be used to implement high accuracy systems, even in single-supply designs.
The variable resistor offers a completely programmable value of resistance between the A terminal and the wiper or the B terminal and the wiper.
Each switch conducts equally well in both directions when ON and each has an input signal range that extends to the supplies. For users of 3. High switching speed also makes the device suitable for video signal switching. This allows designs to achieve higher efficiencies and to transfer more power to the load than previously possible without the use of discrete components. Low gain error and low nonlinearity make the AD ideal for precision instrumentation applications requiring programmable gain.
CMOS construction dattasheet ultralow power dissipation, making the device ideally datasheeet for portable, battery-powered instruments. Applications Audio and video switching Battery-powered systems Test equipment Communication systems. It can be used in three-wire or asynchronous mode and a serial-out pin is provided to allow daisy chaining of multiple DACs on the current loop side of the isolation barrier.
This multiplexer also features high switching speeds and low RON.
The device is fully specified with a single 12 V supply. Stability while driving capacitive loads is another benefit of this design over CMOS rail-to-rail amplifiers. Applications Mechanical potentiometer replacement Instrumentation: Eleven data bits make up the data-word clocked into the serial input register.