AD 2 fully differential input channel ADCs AD 3 pseudo differential input channel ADCs Programmable gain front end: gains from 1 to 3-wire serial interface Ability to buffer the analog input 2. The selected input signal is applied to a proprietary, programmable-gain front end based around an analog modulator. The modulator output is processed by an on- chip digital filter. The first notch of this digital filter can be pro- grammed via an on-chip control register, allowing adjustment of the filter cutoff and output update rate. The AD features two fully differential analog input channels; the AD features three pseudo differential input channels. Both devices feature a differential reference input.
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They employ a sigma- delta conversion technique to realize up to 16 bits of no missing codes performance. The selected input signal is applied to a proprietary programmable gain front end based around an ana- log modulator. The modulator output is processed by an on- chip digital filter. The first notch of this digital filter can be programmed via an on-chip control register allowing adjustment of the filter cutoff and output update rate. The AD features two fully differ- ential analog input channels while the AD features three pseudo differential input channels.
Both devices feature a differ- ential reference input. They feature a serial interface that can be configured for three-wire operation. Gain settings, signal polarity and update rate selection can be configured in software using the input serial port. The part contains self-calibration and system calibration options to eliminate gain and offset errors on the part itself or in the system. These parts are available in a lead, 0.
Endpoint errors and the effects of temperature drift are eliminated by on-chip calibration op- tions, which remove zero-scale and full-scale errors. Patent Number 5,,
AD7705 Analog Devices, AD7705 Datasheet
The model number is a specific version of a generic that can be purchased or sampled. Status Status indicates the current lifecycle of the product. This can be one of 4 stages: Pre-Release: The model has not been released to general production, but samples may be available. Production: The model is currently being produced, and generally available for purchase and sampling. Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time. Obsolete: The specific part is obsolete and no longer available.