AD679JN - 14-Bit 128 kSPS Sampling ADC | Analog Devices
부품 번호: AD679JN ✗ 단종AD679JN 개요
The AD679JN combines the ADC function with an on-chip voltage reference and microprocessor-compatible interface, reducing the number of external components required in a measurement system. Its 14-bit resolution supports applications such as industrial instrumentation, process control, waveform analysis, communications equipment, and data acquisition. The device operates as a complete sampling converter rather than a bare comparator or flash-conversion block, allowing the input signal to be sampled and converted through a compact signal chain.
Key characteristics include 14-bit resolution, a maximum sampling rate of 128 kSPS, one single-ended analog input, and a parallel microprocessor-compatible output interface. The AD679JN also includes integrated sample-and-hold, voltage-reference, and clock circuitry. These features make it useful when accurate AC signal measurements, repeatable sampling, and compact board layouts are more important than using a high-channel-count multiplexing ADC.
According to the Analog Devices AD679 product page, the AD679 provides the same pinout as the 12-bit, 200 kSPS AD678 ADC, creating a documented upgrade path for designs requiring higher resolution. The AD679 family is also available in versions compliant with MIL-STD-883; applications requiring that qualification should select the appropriate military-qualified ordering option rather than assume that every AD679 suffix provides it.
Typical circuit use places the analog input through a suitable front-end network, uses the integrated reference and clock functions, and connects the parallel data bus to a microprocessor, microcontroller, FPGA, or data-acquisition system. The sampling clock, input bandwidth, acquisition timing, and bus timing must be designed together to preserve the converter's dynamic performance. The 28-pin PDIP package is also easier to prototype and inspect than a fine-pitch surface-mount package.
This page combines the verified manufacturer and distributor information for the AD679JN with package, interface, lifecycle, pricing, and design guidance. It distinguishes documented facts from parameters that require confirmation from the manufacturer datasheet and highlights the practical selection trade-offs between the AD679 family ordering options.
드롭인 대체품: AD679JN — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: AD679JN (동일 폼 팩터 및 풋프린트) — 차이점: Architecture, Package.
AD679JNZ
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD679KN
✅ 드롭인가격 문의
데이터시트 보기 →AD679JN 최대 정격 & 전기적 특성
| Device Type | Complete sampling ADC |
| 분해능 | 14 bit |
| 샘플링 속도 | 128 kSPS |
| Analog Input Count | 1 input |
| Input Type | Single-ended |
| Architecture | Flash ADC |
| Integrated Functions | Sample-and-hold amplifier, microprocessor-compatible bus interface, voltage reference, and clock generation circuitry |
| Output Interface | Microprocessor-compatible parallel bus |
| 패키지 | 28-pin PDIP |
| 실장 유형 | Through-hole |
| Reference | Integrated voltage reference |
| MIL-STD-883 Availability | Available in versions compliant with MIL-STD-883 |
AD679JN 핀 구성
| 핀 1 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 2 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 3 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 4 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 5 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 6 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 7 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 8 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 9 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 10 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 11 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 12 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 13 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 14 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 15 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 16 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 17 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 18 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 19 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 20 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 21 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 22 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 23 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 24 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 25 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 26 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 27 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
| 핀 28 | [DATA_NEEDED: pin name] — Pin assignment must be taken from the official AD679 datasheet. |
일반적인 애플리케이션
AD679JN 적합 용도: 6 애플리케이션s: Industrial Process Measurement, Data Acquisition Systems, Instrumentation and Signal Analysis, Communications Receiver Front End, Audio and Vibration Monitoring, Educational and Prototype Equipment.
Industrial Process Measurement
The AD679JN fits industrial process-measurement systems that require a single analog input converted at up to 128 kSPS with 14-bit resolution. Its integrated sample-and-hold amplifier, voltage reference, and clock circuitry reduce the number of separate analog-support components around the converter. The microprocessor-compatible parallel bus is useful when a controller must retrieve conversion data quickly. Because the AD679JN has one single-ended input, multiplexed multi-sensor systems will need external switching or multiplexing circuitry.
추천
Data Acquisition Systems
The AD679JN is appropriate for compact data-acquisition equipment requiring accurate single-channel sampling and direct processor interfacing. Its 14-bit conversion resolution and 128 kSPS maximum sampling rate provide useful headroom for waveform and control signals, while the integrated reference and clock reduce calibration and layout complexity. The parallel bus can connect to a suitable microprocessor, microcontroller, or FPGA through carefully timed data-control logic.
추천
Instrumentation and Signal Analysis
For laboratory instrumentation and signal-analysis equipment, the AD679JN provides a complete sampling signal path with 14-bit resolution and dynamic-performance-oriented specifications. Its integrated sample-and-hold amplifier is useful for capturing changing analog inputs, while the microprocessor-compatible parallel interface supports fast transfer into processing circuitry. Designers should pay attention to acquisition time, input bandwidth, reference accuracy, and clock jitter as defined by the manufacturer datasheet.
추천
Communications Receiver Front End
The AD679JN can serve as the sampling ADC in selected communications receiver or demodulation subsystems where a single-ended analog waveform must be digitized for digital processing. Its 128 kSPS throughput supports moderate-rate signal conversion, and the 14-bit output can preserve more amplitude detail than a lower-resolution converter. The front-end must preserve the converter's specified input range and bandwidth while minimizing aliasing and clock-related noise.
추천
Audio and Vibration Monitoring
The AD679JN is applicable to specialized audio, vibration, and condition-monitoring systems that require a higher-resolution single-channel waveform capture than lower-cost converters provide. The sample-and-hold amplifier and clock circuitry support repeatable acquisition, while the parallel bus allows captured samples to enter a digital processing pipeline. Its 28-pin PDIP package also simplifies instrument-panel and laboratory prototype construction compared with a fine-pitch surface-mount ADC.
추천
Educational and Prototype Equipment
The AD679JN works well in educational circuits, ADC demonstration boards, and prototype measurement systems because it combines the converter, sample-and-hold amplifier, reference, clock circuitry, and parallel interface in one 28-pin PDIP device. Its through-hole package is easier to solder, inspect, and replace during development than a fine-pitch BGA or QFN package. The 14-bit resolution and 128 kSPS sampling capability also allow experiments involving waveform capture, dynamic-range evaluation, and processor interfacing.
추천
추천 제품 요약
엔지니어링 참조 데이터: AD679JN — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | AD679JNZ | AD679KN |
|---|---|---|---|
| Package | PDIP-28 | PDIP-28 - same package | PDIP-28 - same package |
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 14 bit | 14 bit | 14 bit |
| Sampling Rate | 128 kSPS | 128 kSPS | 128 kSPS |
| Input Count | 1 input | 1 input | 1 input |
| Input Configuration | Single-ended | Single-ended | Single-ended |
| Output Interface | Microprocessor-compatible parallel bus | Microprocessor-compatible parallel bus | Microprocessor-compatible parallel bus |
| Integrated Functions | Sample-and-hold amplifier, voltage reference, clock generation circuitry | Sample-and-hold amplifier, voltage reference, clock generation circuitry | Sample-and-hold amplifier, voltage reference, clock generation circuitry |
| AD678 Upgrade-Path Pinout | Same pinout as AD678 | Same AD679-family package and terminal arrangement | Same AD679-family package and terminal arrangement |
주요 차별점
- 14-bit resolution at a 128 kSPS sampling rate (vs AD679JNZ)
- Complete monolithic sampling converter (vs AD679KN)
- Documented AD678 pinout upgrade path (vs AD678)
- Prototype-friendly 28-pin PDIP package (vs AD679JNZ)
설계 노트
Treat the analog input, clock, reference, and digital output paths as separate signal domains. Keep the input trace short, use a return path beneath the analog section, and place the required input and reference components close to their associated pins. Because the verified excerpts do not provide the pin names or complete recommended external-component values, use the official AD679 datasheet schematic and layout guidance rather than values inferred from generic ADC practice.
Do not assume that the AD679, AD679JN, AD679JNZ, and AD679KN suffixes are interchangeable across all commercial, industrial, and military requirements. The manufacturer confirms that MIL-STD-883-compliant versions exist, so the exact ordering suffix must be checked against temperature grade, screening, qualification, and procurement requirements. Also verify acquisition timing and bus timing from the datasheet rather than relying only on the 128 kSPS headline rate.
The 28-pin PDIP package is well suited to prototyping, inspection, and straightforward rework, but through-hole lead spacing can complicate routing to a dense processor or FPGA. Plan the connector and bus routing before layout, maintain the datasheet's grounding recommendations, and avoid long parallel digital traces next to the analog input. The verified data does not specify a recommended PCB layout, so the manufacturer application guidance should remain authoritative.
Power-system design should use the exact supply-voltage and current limits from the AD679 datasheet, which are not included in the verified excerpts. Do not substitute the reported 745 mW value for the AD679JNZ into an AD679JN thermal calculation without confirming identical operating limits. Validate worst-case supply, digital output loading, analog input state, ambient temperature, and PCB copper before approving the power distribution network.
규정 준수 정보
The verified manufacturer material states that MIL-STD-883-compliant versions of the AD679 family are available, but it does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status for the AD679JN. AEC-Q100 is not applicable because this is an analog-to-digital converter rather than an automotive-qualified device in the verified data.