AD679BD - 14-Bit 128 kSPS Sampling ADC | Analog Devices
MPN: AD679BD ✗ پایان تولیدAD679BD نمای کلی
An ADC is a data-acquisition IC that converts an analog voltage into a numeric value for processing, measurement, or transmission. Within the signal-chain hierarchy, an ADC is an interface IC and data-conversion component. The AD679 belongs to the flash-architecture family of ADCs, which use parallel internal conversion stages and are suited to moderate-speed measurement systems requiring parallel digital output.
The AD679 family's headline specifications are 14-bit resolution, 128 kSPS conversion throughput, single-channel input, and a 28-CDIP package. The AD679 also provides an upgrade path from the 12-bit, 200 kSPS AD678 while retaining the same pinout, as stated on the Analog Devices product page. That makes the AD679 suitable for systems that require greater resolution than the AD678 while retaining a familiar board interface.
Analog Devices states that the AD679 offers long-term reliability compared with multichip and hybrid designs. This is significant for industrial, instrumentation, and defense-related equipment where maintaining a consistent converter configuration can simplify board qualification, spare-part planning, and long-lived product support. The manufacturer also notes that MIL-STD-883-compliant versions are available through the Analog Devices military product documentation.
Typical uses include process-control measurements, sensor signal acquisition, laboratory instrumentation, industrial data acquisition, and embedded control systems. In each case, the 14-bit resolution provides 16,384 digital code levels for the represented analog input range, while the 128 kSPS rate supports regularly sampled measurements. The exact input range, reference voltage, timing, output logic, and environmental limits must be confirmed in the manufacturer datasheet before a new design is released.
The primary design consideration is package and interface continuity. Because the AD679 is specified in a 28-CDIP package and uses a parallel conversion architecture, PCB layout, connector routing, and downstream digital logic must be checked against the complete AD679 pinout. Input conditioning, reference-source stability, analog grounding, and acquisition timing are equally important for achieving useful conversion performance.
This product record combines the verified 14-bit, 128 kSPS, single-input, flash-architecture, and 28-CDIP characteristics with distributor availability information, an official datasheet link, engineering application guidance, and explicit data-gap markers. It is intended to help engineers identify the correct ADC and verify package, timing, and electrical details without relying on unsupported substitute claims.
جایگزین‌های drop-in برای AD679BD — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
هیچ جایگزین مستقیمی برای این محصول موجود نیست.
درخواست جایگزینAD679BD حداکثر مقادیر مجاز و مشخصات الکتریکی
| ADC Resolution | 14 bit |
| نرخ نمونه‌برداری | 128 kSPS |
| Architecture | Flash |
| Input Channel Count | 1 input |
| Converter Type | Complete sampling ADC |
| بسته‌بندی | 28-CDIP |
| تعداد پایه | 28 pins |
| Digital Output Interface | Parallel |
| Digital Code Levels | 16,384 codes |
| AD679 Upgrade Source | AD678, 12-bit at 200 kSPS |
| AD679 Pin Compatibility | Same pinout as AD678 |
| Military Version Availability | Versions compliant with MILSTD-883 |
| Reliability Architecture | Monolithic design compared with multichip and hybrid alternatives |
راهنمای پیکربندی پین AD679BD 28-cdip
پیکربندی پین برای AD679BD (پکیج 28-cdip). این قطعه آنالوگ دارای پین‌های ورودی، خروجی و تغذیه است. برای پیکربندی‌های پین offset null، جبران‌سازی و فعال‌سازی به دیتاشیت سازنده مراجعه کنید. ایده‌آل برای مدارهای شرطی‌سازی سیگنال و تقویت‌کننده.
داده پین‌آوت تفصیلی موجود نیست برای AD679BD.
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کاربردهای معمول
AD679BD مناسب است برای 6 کاربردs: Industrial Process Measurement, Laboratory Instrumentation, Sensor Signal Acquisition, Data Acquisition Systems, Embedded Control and Monitoring, Military and High-Reliability Systems.
Industrial Process Measurement
The AD679BD fits moderate-speed industrial process measurement when a system needs 14-bit quantization and 128 kSPS conversion throughput. Its single-input flash architecture can acquire a conditioned sensor voltage and present a parallel digital result to a controller or data-acquisition module. The verified 16,384-code resolution is useful when reducing measurement uncertainty introduced by digitizing a slow or moderately varying process signal. Designers should use stable excitation or reference circuitry, protect the input against industrial transients, and verify the complete input range and acquisition timing in the manufacturer datasheet before finalizing analog scaling and sampling control.
پیشنهادی
Laboratory Instrumentation
The AD679BD is suitable for laboratory instruments that acquire measured analog values at moderate rates while retaining more than 12-bit nominal resolution. Its 128 kSPS sampling capability supports regularly sampled sensor, waveform-monitor, and calibration channels, and the parallel interface allows direct connection to suitable digital logic. Practical implementation still depends on clean reference voltage, low-noise grounding, input conditioning, and careful clock timing. Engineers should not assume generic high-speed ADC practices apply automatically: acquisition time, output timing, and input-referred performance must be checked against the AD679 datasheet before selecting external amplifiers, filters, or logic families.
پیشنهادی
Sensor Signal Acquisition
The AD679BD can convert conditioned outputs from pressure, temperature, position, and analog instrumentation sensors when 14-bit resolution is useful and 128 kSPS is sufficient. A sensor amplifier or filter can scale the transducer output into the converter's supported input range, while the ADC supplies 16,384 nominal digital codes across that range. This arrangement can help preserve measurement detail without using a continuously multiplexed high-speed converter. The design must account for sensor excitation noise, reference drift, input settling, and grounding. Exact input-voltage, common-mode, and acquisition requirements remain unavailable in the retrieved snippets and must be taken from the official datasheet.
پیشنهادی
Data Acquisition Systems
The AD679BD can serve as the conversion element in a parallel-interface data-acquisition system requiring moderate sampling speed and 14-bit output resolution. At 128 kSPS, it is appropriate for systems collecting multiple slowly changing or synchronously sampled channels behind an external multiplexer, provided channel-switching time and converter acquisition requirements are compatible. Its single-input configuration should be considered carefully in multiplexed designs because settling between channels may become the limiting factor. Use a reliable reference, defined digital timing, and appropriate analog routing, and confirm converter multiplexing requirements and output settling behavior in the manufacturer documentation.
پیشنهادی
Embedded Control and Monitoring
The AD679BD is applicable to embedded control systems that monitor analog process variables through a dedicated parallel ADC. The 14-bit resolution can improve the granularity of control measurements relative to a 12-bit converter, while 128 kSPS is ample for many slow closed-loop control signals. A microcontroller, FPGA, or DSP must capture the converter's parallel outputs with correct timing and handle any required interface latching. Firmware designers should also define conversion-trigger behavior, data-valid handling, and fault monitoring. The 28-CDIP package favors legacy or through-hole industrial boards but may require deliberate connector and routing planning on compact assemblies.
پیشنهادی
Military and High-Reliability Systems
The AD679 family is relevant to military and high-reliability acquisition systems because Analog Devices states that versions compliant with MILSTD-883 are available and emphasizes monolithic long-term reliability versus multichip or hybrid designs. These statements do not by themselves qualify the standard AD679BD commercial ordering code. Programs must identify the exact military or 883 variant, inspect its data sheet, verify screening and qualification evidence, and confirm package, temperature, and documentation requirements. For a new high-reliability design, engage the manufacturer's military-products documentation and the applicable procurement authority rather than inferring equivalence from the AD679 family designation.
پیشنهادی
داده‌های مرجع مهندسی برای AD679BD — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول |
|---|---|
| Package | 28-CDIP |
| Brand | Analog Devices |
| ADC Resolution | 14 bit |
| Sampling Rate | 128 kSPS |
| Input Channel Count | 1 input |
| Architecture | Flash |
| Digital Output Interface | Parallel |
| Digital Code Levels | 16,384 codes |
| Documented Upgrade Relationship | Same pinout as the 12-bit, 200 kSPS AD678 |
| Verified Unit Price | 139.28 USD as of 2026-10-30 |
تفاوت‌های کلیدی
- Higher nominal resolution than the documented AD678 upgrade source (در مقابلAD678)
- Lower stated sampling rate than the AD678 (در مقابلAD678)
- Documented family-level military configuration path (در مقابلAD679BD)
یادداشت‌های طراحی
اطلاعات انطباق
Analog Devices states that versions of the AD679 family are available in configurations compliant with MILSTD-883 and directs users to the Military Products Databook or the current AD679/883B data sheet. The supplied data does not establish MILSTD-883 compliance for the standard AD679BD ordering code. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status are unknown.
