AD572BD - 12-Bit SAR ADC | Analog Devices | SBCDIP-32
MPN: AD572BD ✗ Son Kullanım ZamanıAD572BD Genel Bakış
An ADC is an interface component that translates a continuously varying voltage into a numeric representation for processing by a microprocessor, controller, FPGA, or other digital system. The AD572 belongs to the data-converter hierarchy and uses the successive-approximation, or SAR, method. In this architecture, an internal successive-approximation register compares the input against a generated reference voltage, progressively refining the result until the converted code corresponds to the analog input.
The AD572 integrates functions that would otherwise require separate clock, reference, comparator, and input-buffer circuitry. Its 12-bit resolution provides 4096 possible digital output codes. Parallel output supports direct connection to digital buses, while serial output reduces the number of signal interconnects when board space or connector availability is constrained. This combination gives engineers flexibility in how the converter is interfaced to the surrounding digital system.
Active laser trimming of thin-film resistors improves the stability and matching of the internal resistor network. Trimming allows calibration during manufacture to reduce offsets and improve accuracy. The hybrid IC implementation combines MSI digital circuitry with linear monolithic chips, combining digital conversion control and analog measurement functions within one device. The internal reference and buffer amplifier also reduce the number of external precision components required for basic operation.
The AD572 is suitable for industrial data acquisition, process-control instrumentation, test and measurement equipment, embedded control systems, and legacy computer interfaces. It is particularly appropriate when a design requires a complete 12-bit converter with both parallel and serial outputs rather than a high-speed streaming ADC. The tube packaging and 32-pin SBCDIP outline also suit instruments and industrial systems built around through-hole analog and mixed-signal assemblies.
Designers should verify signal levels against the converter's input and reference ranges, establish the correct conversion timing for the selected interface, and provide suitable bypassing around the supply and analog input pins. Because this is a conventional through-hole hybrid converter, board area and interconnect length may favor a more modern surface-mount ADC, but the AD572BD can simplify qualification of older industrial platforms.
This page combines the manufacturer's product information with engineering-oriented guidance on conversion interfaces, accuracy, application fit, and design considerations. It also distinguishes verified product characteristics from details that must be confirmed in the complete Analog Devices AD572 documentation before schematic release or production use.
Drop-in alternatifler için AD572BD — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
Bu ürüne yer değiştirme seçenekleri mevcut değil.
Alternatifleri Talep EdinAD572BD Maksimum Değerlendirmeler & Elektriksel Özellikler
| Converter Type | Successive-approximation ADC |
| Çözünürlük | 12 bit |
| Output Code Count | 4096 codes |
| Arayüz | Parallel and serial |
| Internal Functions | Clock, reference, comparator, and buffer amplifier |
| Reference Implementation | Active laser-trimmed thin-film resistor network |
| IC Construction | Hybrid MSI digital and linear monolithic chips |
| Paket | 32-pin SBCDIP |
| Montaj Türü | Through-hole |
| Delivery Packaging | Tube |
AD572BD 32-pin sbcdip Pin Yapısı Kılavuzu
AD572BD (32-pin sbcdip paket) için pin yapısı. Bu analog bileşen, giriş, çıkış ve güç besleme pinleri içerir. Ofset null, telafi ve etkinleştirme pin yapılandırmaları için üretici veri kitapçığını referans alın. Sinyal işleme ve güç amplifikasyon devreleri için mükemmel bir bileşendir.
Ayrıntılı pin çıkış verisi mevcut değil: AD572BD.
Aşağıdaki veri sayfası tam pin konfigürasyonu için.
Tipik Uygulamalar
AD572BD için uygundur 6 uygulamas: Industrial Process Instrumentation, Test and Measurement Equipment, Embedded Control Systems, Legacy Computer Interface Cards, Transducer Signal Acquisition, Educational and Laboratory Prototypes.
Industrial Process Instrumentation
The AD572BD suits legacy process-control panels and monitoring instruments that measure slow or periodically sampled analog variables. Its 12-bit successive-approximation conversion supports 4096 numerical output levels, while the internal clock, reference, comparator, and buffer amplifier reduce the number of separate conversion components. Both parallel and serial outputs provide flexibility when the same instrument must connect to a bus controller, a microcontroller, or a data-acquisition module. The 32-pin SBCDIP format is particularly useful when maintaining an existing through-hole analog front end rather than redesigning the board.
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Test and Measurement Equipment
The AD572BD can be used as the acquisition element in bench instruments, signal-conditioners, and automated test systems that measure bounded analog voltages rather than continuous high-frequency waveforms. The integrated reference, clock, comparator, and buffer amplifier provide a consolidated conversion block, while the parallel output can feed a processor bus and the serial output can simplify connections where many digital lines are unavailable. The 12-bit result is appropriate for many instrument-level measurements where resolution, legacy footprint compatibility, and stable production tooling matter more than minimum board area.
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Embedded Control Systems
The AD572BD is appropriate for embedded controllers requiring a self-contained 12-bit ADC with flexible digital output options. A system can use the parallel interface for direct connection to an older microprocessor data bus or the serial interface for a more compact processor connection. The internal clock and reference support a simpler analog acquisition section, while the buffer amplifier provides the analog input stage described by Analog Devices. In control loops, the conversion time must be checked against the required sampling rate and the input must be conditioned to remain within the converter's electrical limits.
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Legacy Computer Interface Cards
The AD572BD is well matched to legacy computer add-in cards and industrial interface assemblies built around the AD572 family's through-hole pinout. The 32-pin SBCDIP package preserves compatibility with existing routing, while the parallel interface supports older bus-style data acquisition and the serial interface provides an alternate path for compact controller connections. Its complete converter architecture reduces the number of external reference and clock components needed for a functional acquisition channel. Repair and modernization programs should confirm package tolerances, supply rails, timing, and signal levels before production release.
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Transducer Signal Acquisition
The AD572BD can form the central conversion element of a transducer measurement channel after suitable signal conditioning. Sensor outputs such as 0–5 V, 0–10 V, or mA-level signals require scaling, protection, and filtering before entering the ADC. Once conditioned, the converter's 12-bit resolution provides 4096 digital codes and its integrated buffer amplifier supports a defined analog input path. The parallel and serial interfaces allow the measured value to be routed to different controller architectures, making the device useful in industrial panel meters and legacy data loggers.
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Educational and Laboratory Prototypes
The AD572BD can support laboratory converters, educational instrumentation, and prototype systems designed around conventional through-hole logic. Its internal clock, reference, comparator, and buffer amplifier let a builder focus on signal conditioning and data handling instead of constructing every supporting block separately. The parallel interface is convenient for teaching parallel acquisition concepts, while the serial interface demonstrates how the same converter can connect to a microcontroller. Because the AD572BD is an obsolete legacy product, prototypes should verify current sourcing and electrical limits before committing to a larger production run.
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Önerilen Ürünler Özeti
Mühendislik referans verileri: AD572BD — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün |
|---|---|
| Converter Type | 12-bit successive-approximation ADC |
| Resolution | 12 bit |
| Output Code Count | 4096 codes |
| Interface | Parallel and serial |
| Internal Clock | Integrated |
| Internal Reference | Integrated |
| Comparator | Integrated |
| Buffer Amplifier | Integrated |
| Resistor Technology | Active laser-trimmed high-stability thin-film resistors |
| IC Construction | Hybrid MSI digital and linear monolithic chips |
| Package | 32-pin SBCDIP |
| Brand | Analog Devices |
Ana Farklılayıcılar
- Parallel and serial outputs in one converter (karşılaştırma:AD572AD)
- Complete integrated conversion subsystem (karşılaştırma:AD572B)
- Manufactured with laser-trimmed thin-film resistors (karşılaştırma:AD572CD)
Tasarım Notları
Use the 32-pin SBCDIP top-view drawing in the Analog Devices AD572 datasheet as the authoritative pin-number reference. Route the analog input and reference-related connections away from parallel data and control traces, and place associated bypassing close to the relevant device pins. Since the package is a hybrid ceramic SBCDIP, allow adequate clearance for its larger thermal and mechanical footprint. Prototype the interface timing with both parallel and serial modes before committing the board because the two interfaces may require different control sequencing.
Do not select a replacement solely because it also provides 12-bit resolution. A usable drop-in replacement must preserve the 32-pin SBCDIP footprint, supply connections, analog input range, reference behavior, control pins, conversion timing, and parallel and serial output functions. A converter in a smaller surface-mount package may require a redesigned PCB, new level shifting, and different firmware. For the AD572BD itself, confirm the complete ordering code and package drawing because the family designation alone does not establish electrical or mechanical equivalence.
Calculate supply requirements from the manufacturer's operating-current and power-consumption limits for the exact AD572BD grade and operating mode. The internal clock, reference, comparator, and buffer amplifier form part of the converter's power budget, so a design based only on a nominal logic-supply current can under-size the regulator. Include startup and reference-settling behavior in system timing, and follow the datasheet's recommended bypass network. Confirm maximum supply and analog input voltages during fault analysis, including transients from external cables.
Treat 12 bits as a nominal code count rather than guaranteed measurement accuracy. Offset error, gain error, integral nonlinearity, differential nonlinearity, reference accuracy, and input-circuit error all affect the usable resolution. The AD572's laser-trimmed thin-film resistor network supports stable performance, but the complete analog front end still requires correct source impedance, filtering, grounding, and settling time. Verify the acquisition sequence with the intended sensor or signal source instead of testing only with an ideal low-impedance generator.
Uyumluluk Bilgisi
The product listing does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status for the obsolete AD572BD. AEC-Q100 qualification is not applicable because the AD572 is a legacy industrial and instrumentation converter rather than an automotive-qualified device.
