AD974AR - 4-Channel 16-Bit 200kSPS ADC | Analog Devices
Référence : AD974AR ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $45.39 | $45,39 |
| 10 | $45.39 | $453,90 |
| 100 | $45.39 | $4 539,00 |
| 500 | $45.39 | $22 695,00 |
| 1 000 | $45.39 | $45 390,00 |
AD974AR Présentation
A data acquisition system combines analog signal conditioning, multiplexing, sampling, quantization, and digital conversion into one integrated device. The AD974AR belongs to the ADC family within data-converter and signal-processing semiconductors. Its four-channel multiplexer reduces the need for separate analog switches when several sensors or measurement nodes must be digitized with one converter.
The main features are 16-bit resolution, 200 kSPS conversion throughput, four analog input channels, a 2.5 V internal reference, and a single 5 V supply. A power-down mode reduces consumption when acquisition is not required. The serial interface allows converted samples to be transferred efficiently to a digital controller, while the successive-approximation switched-capacitor architecture supports a practical balance among speed, resolution, power, and implementation complexity.
The AD974AR can accommodate 0 V to +4 V, 0 V to +5 V, or ±10 V analog input ranges. These ranges make the converter applicable to unipolar industrial measurements, positive voltage sensing, and bipolar instrumentation. The exact input bandwidth, acquisition time, conversion timing, output logic levels, reference accuracy, and operating-temperature limits are not supplied in the verified excerpts and must be confirmed in the manufacturer datasheet before design release.
Typical uses include industrial process monitoring, multichannel sensor acquisition, laboratory instrumentation, control systems, and embedded measurement platforms. In each case, the four-channel multiplexer is valuable when multiple signals must share one ADC. Designers should account for source impedance, sampling-charge requirements, serial-interface timing, analog grounding, and the selected input range rather than treating the converter as a direct voltage-measurement block.
For reliable operation, place input and reference components close to their associated pins, provide a clean 5 V supply, and route high-speed serial signals away from sensitive analog inputs. Confirm pin functions, package details, acquisition timing, and electrical limits against the official AD974 datasheet. This page combines the verified product description, distributor availability information, package identity, and engineering guidance for legacy or redesign scenarios.
Alternatives de remplacement direct pour AD974AR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec AD974AR (même facteur de forme et même empreinte) — différant par Package, Supply Voltage, Mounting Type, Product Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
AD974BR
✅ Remplacement direct✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →AD974BRZ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AD974BNZ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AD974AR Valeurs maximales et caractéristiques électriques
| Résolution | 16 bit |
| Fréquence d'échantillonnage | 200 kSPS |
| Number of Input Channels | 4 channels |
| Converter Architecture | Successive-approximation switched-capacitor ADC |
| Tension d'alimentation | 5 V single supply |
| Internal Reference Voltage | +2.5 V |
| Input Range 1 | 0 V to +4 V |
| Input Range 2 | 0 V to +5 V |
| Input Range 3 | ±10 V |
| Type d'interface | High-speed serial interface |
| Integrated Multiplexer | Four-channel input multiplexer |
| Power-Down Mode | Supported |
| Boîtier | 28-pin SOIC |
| Type de montage | Surface Mount |
Guide de configuration des broches du AD974AR 28-pin soic
Configuration des broches du AD974AR (boîtier 28-pin soic). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour AD974AR.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
AD974AR convient pour 6 applications: Industrial Process Monitoring, Multichannel Sensor Acquisition, Laboratory Instrumentation, Embedded Control Systems, Data Acquisition Cards, Power and Battery Monitoring.
Industrial Process Monitoring
The AD974AR fits multichannel industrial process monitoring when several analog nodes must be sampled with one 16-bit converter. Its four-channel input multiplexer reduces the need for separate analog multiplexing hardware, while the 200 kSPS throughput supports fast sensor updates. The single 5 V supply simplifies system power distribution compared with a multi-rail acquisition design. Engineers should still add suitable input conditioning, protection, and anti-aliasing filtering because the verified excerpts do not specify the complete input impedance or acquisition-time limits.
Recommandé
Multichannel Sensor Acquisition
The AD974AR is a practical choice for acquiring four sensor channels through a shared converter. Its 16-bit resolution supports fine measurement granularity, and its 200 kSPS conversion rate allows sampled data to be refreshed at a useful rate for slow and moderate-speed sensors. The integrated multiplexer is the main architectural benefit, because it lets a controller select among channels and serialize results through the high-speed serial interface. Sensor excitation, buffering, grounding, and calibration remain external design responsibilities.
Recommandé
Laboratory Instrumentation
The AD974AR can support laboratory and test systems that need four analog measurement inputs, 16-bit resolution, and a 200 kSPS conversion rate. The internal +2.5 V reference is useful for a controlled acquisition chain, while the serial interface can connect to a controller or data-capture logic. Input ranges of 0 V to +4 V, 0 V to +5 V, and ±10 V provide flexibility for different sensor amplitudes. Calibration, reference drift, source impedance, and timing must be evaluated against the full manufacturer datasheet.
Recommandé
Embedded Control Systems
The AD974AR can fit an embedded measurement system where four analog channels must be converted before control decisions are made. Its single 5 V supply, internal 2.5 V reference, and serial interface reduce the number of separate external blocks, while 16-bit resolution provides a useful numerical format for closed-loop monitoring. The design should include a defined acquisition sequence, digital settling time, and protection against transient industrial inputs. The verified data does not establish the exact serial protocol or absolute timing, so firmware must follow the datasheet.
Recommandé
Data Acquisition Cards
The AD974AR is relevant to legacy data-acquisition cards that already use a 28-pin SOIC footprint and require four 16-bit channels at 200 kSPS. Its integrated multiplexer and +2.5 V reference can simplify board-level design compared with discrete converter solutions. A replacement or redesign should preserve the serial interface and verify every pin function, supply level, analog range, and acquisition timing. Because the retrieved product results identify the device as obsolete, board builders should assess availability and long-term sourcing before new production.
Recommandé
Power and Battery Monitoring
The AD974AR can be evaluated for multi-point voltage monitoring where several rails or battery cells must be digitized through a common converter. The 16-bit resolution and 200 kSPS sampling rate provide a combination that may suit monitoring tasks, while the selectable input ranges include a unipolar 0 V to +5 V option. A practical implementation still needs resistor dividers, input filtering, cell balancing protection, and a safe common-ground strategy. The converter's 5 V supply should be isolated or regulated according to the battery-system voltage and safety requirements.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour AD974AR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | AD974BR | AD974BRZ | AD974BNZ |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 28-pin SOIC | 28-pin SOIC - exact package verification required | 28-pin SOIC - exact package verification required | 28-pin SOIC - exact package verification required |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| Sampling Rate | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS |
| Input Channels | 4 channels | 4 channels | 4 channels | 4 channels |
| Supply | 5 V single supply | 5 V single supply | 5 V single supply | 5 V single supply |
| Input Ranges | 0 V to +4 V, 0 V to +5 V, or ±10 V | 0 V to +4 V, 0 V to +5 V, or ±10 V | 0 V to +4 V, 0 V to +5 V, or ±10 V | 0 V to +4 V, 0 V to +5 V, or ±10 V |
| Internal Reference | +2.5 V | +2.5 V | +2.5 V | +2.5 V |
| Interface | High-speed serial interface | High-speed serial interface | High-speed serial interface | High-speed serial interface |
Principaux différenciateurs
- Four-channel integration (vs AD974BR)
- 200 kSPS throughput (vs AD974BNZ)
- Single 5 V integration (vs AD974BRZ)
- Legacy board reuse (vs AD974BR)
Notes de conception
Route analog inputs and reference connections close to the AD974AR and keep them away from the high-speed serial lines. Place input filtering, protection, and settling components where they can connect directly to the relevant pins rather than sharing long traces with digital return currents. The verified excerpts do not provide the complete recommended layout, so the manufacturer datasheet and reference circuit should remain the controlling design documents.
Treat the serial interface as a timing-sensitive digital signal and verify clock levels, data valid timing, and settling behavior with the full datasheet. Because the supplied excerpts do not include the complete interface timing table or logic thresholds, do not infer them from the 200 kSPS headline rate. Use controlled-impedance routing where appropriate and add adequate ground-return continuity beneath high-speed traces.
Do not assume that every ±10 V source can be connected directly to the converter input. Confirm the selected input-range configuration, external attenuation, source impedance, overvoltage protection, and grounding in the AD974 datasheet. The AD974AR is identified as obsolete in the retrieved results, so second sourcing should include a formal equivalence review rather than relying only on the family name or a distributor cross-reference listing.
Informations de conformité
The supplied product and distributor excerpts do not provide verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. Compliance should be confirmed with Analog Devices or an authorized distributor for the exact ordering code.