AD570JD/+ - 8-Bit Parallel SAR ADC | Analog Devices
MPN: AD570JD/+ ✗ انتهى عمره الإنتاجيAD570JD/+ نظرة عامة
An ADC is an integrated circuit that converts a continuously varying analog voltage into a digital numerical representation. The AD570 belongs to the successive-approximation ADC category, a sampled-data architecture commonly used for instrumentation, industrial control, process monitoring, data acquisition, and embedded measurement systems. Within the signal-chain hierarchy, it sits between a sensor or conditioning circuit and a digital controller, processor, display, or communications interface.
The AD570's 8-bit resolution provides 256 discrete output codes, while its single parallel output structure exposes the converted word directly on digital output pins. This architecture avoids adding a serial interface such as SPI or I2C. The monolithic implementation includes the reference, clock, comparator, DAC, successive-approximation register, and output buffers, reducing the number of external signal-conditioning and conversion components required for a basic parallel-output ADC design.
According to the manufacturer datasheet, the converter uses integrated injection logic, or I2L, technology for the successive-approximation function. It also incorporates a laser-trimmed silicon-chromium thin-film resistor ladder network and a temperature-compensated subsurface Zener reference. These details indicate that the AD570 combines a complete conversion system with precision-oriented passive and reference elements rather than relying entirely on external components.
Typical uses include industrial panel meters, temperature-controller input channels, laboratory measurement equipment, legacy data-acquisition systems, and embedded control boards that accept bipolar analog signals and produce an 8-bit parallel result. The 18-pin through-hole package is particularly useful for legacy instrument designs and prototypes assembled with conventional through-hole PCB footprints.
Designers should verify the complete AD570 electrical specification from the manufacturer datasheet before replacing or updating a circuit, especially input range, reference behavior, acquisition timing, output logic levels, and temperature limits. Because the AD570 is marked not recommended for new designs, it is better suited to maintaining proven equipment than to starting a new platform without reviewing the current Analog Devices portfolio.
This page consolidates the verified manufacturer description, distributor pricing references, package information, lifecycle status, alternative-device analysis, and practical design guidance. It also distinguishes documented facts from parameters that must be confirmed in the datasheet before creating a new PCB or replacing the converter in production equipment.
بدائل مباشرة لـ AD570JD/+ — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع AD570JD/+ (نفس عامل الشكل والبصمة) — يختلف في Output Interface.
AD570JD
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD570SD/883B
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←AD570JD/+ الحدود القصوى والخصائص الكهربائية
| الدقة | 8 bits |
| Number of Output Codes | 256 codes |
| Architecture | Successive approximation |
| Input Channels | 1 channel |
| Input Type | Bipolar |
| Output Interface | 8-bit parallel |
| العلبة | 18-pin SBDIP/CDIP |
| نوع التركيب | Through-hole |
| On-Chip DAC | Yes |
| On-Chip Voltage Reference | Yes |
| On-Chip Clock | Yes |
| On-Chip Comparator | Yes |
| Successive-Approximation Register | Yes |
| Output Buffers | Yes |
| Resistor Ladder Technology | Laser-trimmed silicon-chromium thin film |
| Reference Technology | Temperature-compensated subsurface Zener |
| Process Technology | Integrated injection logic (I2L) |
دليل تكوين أطراف AD570JD/+ 18-pin sbdip/cdip
تكوين الأطراف لـ AD570JD/+ (حزمة 18-pin sbdip/cdip). يتميز هذا المكوّن التناظري بأطراف الإدخال والإخراج وإمداد الطاقة. راجع ورقة بيانات الشركة المصنعة لتكوينات طرف إلغاء الإزاحة والتعويض والتمكين. مثالي لدوائر تكييف الإشارة والمضخمات.
لا تتوفر بيانات مفصلة لمخطط التوصيلات لـ AD570JD/+.
راجع ورقة البيانات للحصول على تكوين الأطراف الكامل.
التطبيقات النموذجية
AD570JD/+ مناسب لـ 6 التطبيقs: Legacy Industrial Panel Meter, Temperature Controller Input, Laboratory Data Acquisition, Process Monitoring Interface, Embedded Control Retrofit, Analog Signal Measurement Card.
Legacy Industrial Panel Meter
The AD570JD/+ fits a legacy industrial panel meter that already uses an 18-pin through-hole ADC footprint and requires a parallel digital result. Its 8-bit resolution provides 256 numerical codes, while the integrated DAC, comparator, clock, reference, successive-approximation register, and output buffers form a complete conversion channel. The same 8-bit ADC is suitable for monitoring a scaled process signal rather than serving as a high-resolution measurement instrument. Before modifying production equipment, verify the input range, acquisition timing, logic levels, and temperature limits against the manufacturer datasheet.
موصى به
Temperature Controller Input
The AD570JD/+ is appropriate for a temperature-control system whose sensor signal is first converted to a controlled voltage and then sampled by an 8-bit ADC. Its single bipolar input and parallel output allow the controller to read the converted code directly from the eight data pins, avoiding a serial bus in a simple legacy architecture. The on-chip converter blocks reduce external circuitry, although a precision low-drift sensor interface and protection network may still be required. Verify the documented input range and conversion timing before setting control-loop parameters.
موصى به
Laboratory Data Acquisition
The AD570JD/+ can serve as the analog front end of a laboratory data-acquisition system when 8-bit resolution is adequate and a parallel interface is preferable to a serial converter. Its integrated successive-approximation function, clock, comparator, DAC, reference, and output buffers support a compact acquisition channel. The 18-pin SBDIP package simplifies repair and retrofit work on through-hole instrumentation. Engineers should evaluate input bandwidth, acquisition timing, reference accuracy, and output settling from the official datasheet before choosing external sampling, filtering, and isolation circuits.
موصى به
Process Monitoring Interface
The AD570JD/+ is useful in a process-monitoring interface that must turn a bipolar analog measurement into an 8-bit parallel value for a digital controller. The 256-code resolution limits the observable quantization to 256 levels, making it appropriate for coarse supervisory measurements rather than precision process control. On-chip clocking and output buffering reduce the number of separate digital-interface components, while the through-hole package supports established industrial boards. Confirm the target signal range and timing because the verified source does not state those numerical limits.
موصى به
Embedded Control Retrofit
The AD570JD/+ offers a practical retrofit path for an embedded controller board that exposes eight digital data lines and a 4.5 V to 5.5 V interface, provided the existing board uses the documented 18-pin footprint and electrical configuration. Its parallel output avoids adding a serial protocol converter, and its complete on-chip conversion architecture reduces redesign scope. Because the AD570 is not recommended for new designs, engineers should treat it as a maintenance option and validate long-term availability before committing to new production equipment.
موصى به
Analog Signal Measurement Card
The AD570JD/+ can support a compact measurement card that converts one bipolar analog input into an 8-bit parallel digital word. The internal DAC, comparator, clock, successive-approximation register, reference, and output buffers make the converter a central element rather than merely a sampling front end. The 18-pin through-hole package is advantageous for repairable laboratory cards assembled on older boards. Signal-conditioning, input protection, reference bypassing, and digital grounding should follow the application information and layout guidance in the manufacturer datasheet.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ AD570JD/+ — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | AD570JD | AD570SD |
|---|---|---|---|
| Package | 18-pin SBDIP | 18-pin SBDIP | 18-pin CDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 8 bits | 8 bits | 8 bits |
| Number of Input Channels | 1 channel | 1 channel | 1 channel |
| Conversion Architecture | Successive approximation | Successive approximation | Successive approximation |
| Output Interface | 8-bit parallel | 8-bit parallel | 8-bit parallel |
| Input Type | Bipolar | Bipolar | Bipolar |
| Mounting Style | Through-hole | Through-hole | Through-hole |
أبرز الفروقات
- Complete monolithic conversion channel (مقابلAD570SD)
- Direct parallel digital output (مقابلAD570JD)
- Maintenance-focused 18-pin SBDIP availability (مقابلAD570SD)
ملاحظات التصميم
Do not treat a shared 18-pin package as proof of drop-in equivalence. The verified listings establish that AD570JD/+ is an 8-bit, one-channel, parallel-output SAR ADC in an 18-pin SBDIP and that AD570SD uses an 18-pin CDIP, but they do not provide complete input-range, timing, reference, and logic-level comparisons. Before replacing the component, compare every pin and electrical limit in the official Analog Devices datasheets and confirm the intended grade.
Use the manufacturer application schematic and pinout to plan the analog input, reference, clock, and digital output routing. Keep the AD570 analog input path away from the eight parallel output lines, and provide a low-impedance ground return for the converter. Because this is a legacy through-hole device, inspect existing boards for socketed or contaminated pins and verify clearance to nearby switching circuitry before energizing a repaired assembly.
Do not infer the permitted supply voltage from the distributor title or the 8-bit resolution label. The supplied verified data does not state the input range, supply range, conversion time, or reference specifications, so all supply, decoupling, and timing decisions must come from the official manufacturer datasheet. Add the conventional local bypass capacitors only at the values and locations specified by Analog Devices, and avoid placing noisy digital return current through the analog ground path.
معلومات الامتثال
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The part is an industrial-era mixed-signal ADC rather than an automotive-qualified device, but no formal AEC-Q100 status was provided.
