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AD7705BR Datenblatt (PDF) - Analog Devices

AD7705BR Datasheet PDF - Analog Devices
Teilenummer AD7705BR
Download  AD7705BR Download

Filegröße   264.11 Kbytes
Page   32 Pages
Hersteller  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices
Bauteilbeschribung 3 V/5 V, 1 mW 2-/3-Channel 16-Bit, Sigma-Delta ADCs

AD7705BR Datasheet (PDF)

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AD7705BR Datasheet PDF - Analog Devices

Teilenummer AD7705BR
Download  AD7705BR Click to download

Filegröße   264.11 Kbytes
Page   32 Pages
Hersteller  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices
Bauteilbeschribung 3 V/5 V, 1 mW 2-/3-Channel 16-Bit, Sigma-Delta ADCs

AD7705BR Datenblatt (HTML) - Analog Devices

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AD7705BR Produktdetails

GENERAL DESCRIPTION
The AD7705/AD7706 are complete analog front ends for low frequency measurement applications. These 2-/3-channel devices can accept low level input signals directly from a transducer and produce serial digital output. The devices employ a Σ-Δ 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 analog 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 AD7705/AD7706 devices operate from a single 2.7 V to 3.3 V or 4.75 V to 5.25 V supply. The AD7705 features two fully differential analog input channels; the AD7706 features three pseudo differential input channels.
Both devices feature a differential reference input. Input signal ranges of 0 mV to 20 mV through 0 V to 2.5 V can be incorporated on both devices when operating with a VDD of 5 V and a reference of 2.5 V. They can also handle bipolar input signal ranges of ±20 mV through ±2.5 V, which are referenced to the AIN(−) inputs on the AD7705 and to the COMMON input on the AD7706.
The AD7705/AD7706 devices, with a 3 V supply and a 1.225 V reference, can handle unipolar input signal ranges of 0 mV to 10 mV through 0 V to 1.225 V. The devices can accept bipolar input ranges of ±10 mV through ±1.225 V. Therefore, the AD7705/AD7706 devices perform all signal conditioning and conversion for a 2-channel or 3-channel system.
The AD7705/AD7706 are ideal for use in smart, microcontroller, or DSP-based systems. The devices feature a serial interface that can be configured for 3-wire operation. Gain settings, signal polarity, and update rate selection can be configured in software using the input serial port. The parts contains self-calibration and system calibration options to eliminate gain and offset errors on the part itself or in the system. CMOS construction ensures very low power dissipation, and the power-down mode reduces the standby power consumption to 20 μW typ.
These parts are available in a 16-lead, wide body (0.3 inch), plastic dual in-line package (DIP); a 16-lead, wide body (0.3 inch), standard small outline (SOIC) package; and a low profile, 16-lead, thin shrink small outline package (TSSOP).

FEATURES
  AD7705: 2 fully differential input channel ADCs
  AD7706: 3 pseudo differential input channel ADCs
     16 bits no missing codes
     0.003% nonlinearity
  Programmable gain front end: gains from 1 to 128
  3-wire serial interface
     SPI®-, QSPI™-, MICROWIRE™-, and DSP-compatible
        Schmitt-trigger input on SCLK
  Ability to buffer the analog input
  2.7 V to 3.3 V or 4.75 V to 5.25 V operation
  Power dissipation 1 mW maximum @ 3 V
  Standby current 8 μA maximum
  16-lead PDIP, 16-lead SOIC, and 16-lead TSSOP packages




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Über Analog Devices


Analog Devices, Inc. (ADI) ist ein börsennotiertes Unternehmen, das leistungsstarke analoge, gemischte Signal- und Digital Signal Processing (DSP) integrierte Schaltkreise (ICs) entwirft, entwickelt und herstellt.
Das Unternehmen wurde 1965 gegründet und hat seinen Hauptsitz in Norwood, Massachusetts.
ADI dient einer Vielzahl von Branchen, einschließlich Luft- und Raumfahrt und Verteidigung, Automobil, Kommunikation, Verbraucher, Industrie, Medizin sowie Test und Messung.
Das Produktportfolio des Unternehmens umfasst unter anderem Datenkonverter, Verstärker und Komponenten, ICs, Microcontroller, Sensoren und Funkfrequenz (RF) und Mikrowellenkomponenten.
ADI widmet sich der Innovation und Kundenzufriedenheit und setzt sich dafür ein, seinen Kunden qualitativ hochwertige, zuverlässige Lösungen zu bieten, um ihren Anforderungen zu erfüllen.
Mit einem Fokus auf Energieeffizienz und Nachhaltigkeit ist ADI führend in der analogen und gemischten Signal-IC-Industrie, die technologische Fortschritte vorantreibt und innovative Lösungen für die schwierigsten Probleme der Welt bietet.

*Diese Informationen dienen nur zu allgemeinen Informationszwecken. Wir haften nicht für Verluste oder Schäden, die durch die oben genannten Informationen verursacht werden.




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