AD573SD - 10-Bit 20 us SAR ADC, 20-CDIP | Analog Devices
Référence : AD573SD ✗ Fin de vie| Qté | Prix unitaire | Total |
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AD573SD Présentation
An ADC converts an analog input voltage into a digital code for measurement, control, instrumentation, and industrial signal-processing systems. The AD573 belongs to the SAR ADC family: a successive-approximation register controls an internal DAC while a comparator tests successive bit decisions. SAR converters are useful when a compact, deterministic conversion process and direct digital output are preferred over continuous delta-sigma modulation. The integrated reference, clock, comparator, and output buffers reduce external circuitry and simplify system implementation.
The main verified features include 10-bit resolution, no missing codes over temperature, full or 16-bit microprocessor bus-interface capability, fast successive-approximation conversion with 20 us typical timing, operation from +5 V and -15 V supplies, and monolithic construction. The integrated design can reduce board area and assembly complexity. The parallel three-state outputs are useful when the ADC must share a processor data bus or interface directly with digital control logic.
The AD573SD is suitable for industrial process measurement, data acquisition, instrumentation, test equipment, and legacy control systems requiring a deterministic parallel ADC. A 20-CDIP package provides through-hole mechanical compatibility for systems designed around ceramic DIP footprints, but it is not interchangeable with a surface-mount package without a PCB change. Supply arrangement, signal conditioning, grounding, and digital-bus timing remain important design considerations.
For a new design, use the AD573SD when its 10-bit SAR architecture, integrated functions, parallel interface, and 20-CDIP footprint are specifically required. For higher resolution, different supply architecture, or surface-mount assembly, select a newer ADC whose electrical and pin requirements have been verified. This product page synthesizes verified manufacturer and distributor information, application guidance, and compatibility cautions; missing electrical values are explicitly marked rather than estimated.
Alternatives de remplacement direct pour AD573SD — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesAD573SD Valeurs maximales et caractéristiques électriques
| Résolution | 10 bit |
| Converter Type | Successive Approximation (SAR) |
| Conversion Time | 20 us typical |
| Analog Input Count | 1 input |
| Output Interface | Parallel, three-state outputs |
| Microprocessor Interface | Full or 16-bit microprocessor bus interface |
| Positive Supply | +5 V |
| Negative Supply Options | -12 V or -15 V |
| Integrated Functions | DAC, voltage reference, clock, comparator, successive-approximation register, and three-state output buffers |
| Missing Codes | No missing codes over temperature |
| Boîtier | 20-pin ceramic DIP (20-CDIP) |
| Package Type | Through-hole ceramic DIP |
| Construction | Monolithic |
| External Components Required | None required for a full-accuracy 10-bit conversion |
Guide de configuration des broches du AD573SD through-hole ceramic dip
Configuration des broches du AD573SD (boîtier through-hole ceramic dip). 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 AD573SD.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
AD573SD convient pour 6 applications: Industrial Process Measurement, Data-Acquisition Interface, Laboratory Instrumentation, Legacy Control Systems, Educational Electronics, Instrumentation Retrofit.
Industrial Process Measurement
The AD573SD fits legacy industrial measurement systems that need deterministic 10-bit sampling, parallel data transfer, and a ceramic through-hole package. Its integrated DAC, voltage reference, clock, comparator, SAR register, and three-state buffers reduce the number of external support components. The 20 us typical conversion is suitable for many process-control loops where a faster converter is not required. Designers should preserve the verified +5 V and -12 V or -15 V supply arrangement and follow the manufacturer’s analog grounding recommendations.
Recommandé
Data-Acquisition Interface
Use the AD573SD when a data-acquisition card must acquire one analog channel and present the result through a processor data bus. Its full or 16-bit microprocessor bus interface and three-state output buffers support bus-oriented digital designs, while the integrated reference and clock reduce support circuitry. The 10-bit conversion result provides 1,024 codes, and the 20 us typical conversion rate supports moderate-speed acquisition. Validate bus timing, output coding, and input acquisition behavior against the Analog Devices datasheet.
Recommandé
Laboratory Instrumentation
The AD573SD is appropriate for laboratory instruments and legacy test equipment that require a stable, integrated 10-bit conversion function rather than the very high resolution or small surface-mount package of newer converters. Its 20-CDIP format is useful for through-hole instrument construction, repair, and modular insertion. The analog front end should provide suitable input conditioning and grounding, while the digital side should account for the converter's three-state outputs and specified bus interface.
Recommandé
Legacy Control Systems
The AD573SD can serve as the measurement front end in older embedded control equipment that uses a parallel ADC and through-hole ceramic DIP construction. Its 10-bit SAR architecture offers a straightforward digital code output, and the integrated converter functions help limit support-component count. The dual supply arrangement must be retained or deliberately redesigned, and the input signal must remain within the converter's specified range. This application is best suited to maintenance and legacy-product designs rather than unrestricted new-platform development.
Recommandé
Educational Electronics
AD573SD is useful in educational ADC experiments because it combines a DAC, voltage reference, clock, comparator, SAR register, and output buffers in one converter. Students can observe how a successive-approximation converter produces a digital result and how parallel output signals connect to a processor bus. The 20-CDIP package is mechanically accessible for through-hole teaching boards. Because the device uses +5 V with a negative supply, laboratory supplies and logic-level interfacing must be wired carefully.
Recommandé
Instrumentation Retrofit
For retrofitting an older analyzer or controller, the AD573SD provides a path to preserve a 20-CDIP footprint and existing parallel-bus architecture. Its integrated clock and reference are particularly useful when replacing discrete converter circuitry, while the 20 us typical conversion time supports continuous panel-meter or process-monitor updates. Before installation, verify the original device's pinout, supply sequencing, input range, and output coding. A modern ADC is generally preferable when PCB area or supply complexity is no longer constrained.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour AD573SD — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit |
|---|---|
| Package | 20-CDIP |
| Brand | Analog Devices |
| Resolution | 10 bit |
| Converter Architecture | Successive Approximation (SAR) |
| Conversion Time | 20 us typical |
| Positive Supply | +5 V |
| Negative Supply Options | -12 V or -15 V |
| Interface | Parallel microprocessor bus interface |
Principaux différenciateurs
- Complete converter integration (vs Discrete or partially integrated legacy ADC circuit)
- Deterministic 10-bit SAR conversion (vs Delta-sigma or higher-resolution legacy ADC)
- Legacy-compatible 20-CDIP construction (vs Surface-mount ADC)
Notes de conception
The AD573SD requires the manufacturer-specified +5 V and negative supply arrangement. Place bypass capacitors close to the supply pins and keep the analog return path low impedance. Because the converter combines reference, clock, DAC, comparator, and output functions in one monolithic device, supply disturbance can appear directly in the conversion result. Confirm exact capacitor values and sequencing requirements from the Analog Devices datasheet rather than inferring them from generic ADC layouts.
The AD573SD is a 20-CDIP through-hole device, so a replacement or retrofit must match the ceramic DIP footprint and pin numbering. Keep analog input routing short and away from digital clock and bus traces. Provide a quiet ground connection near the converter and route high-current return paths separately. If redesigning the assembly, verify lead spacing, insertion orientation, and thermal clearance before committing to a board layout.
Do not substitute a converter merely because it has 10-bit resolution. A valid replacement must also match the 20-CDIP package, supply rails, output coding, bus interface, conversion timing, input range, and timing requirements. The supplied web results mention AD573KN as a comparison candidate but do not verify it as a pin-compatible substitute. Obtain the complete manufacturer data before treating any related AD573 suffix as a drop-in replacement.
Informations de conformité
The supplied verified data does not state compliance or environmental-material status for AD573SD. Obtain current documentation from Analog Devices before regulated use.
