AD7683BCPZ - 16-Bit 250kSPS PulSAR ADC | Analog Devices
부품 번호: AD7683BCPZ ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.12 | $3,060.00 |
| 1,000 | $5.5 | $5,500.00 |
AD7683BCPZ 개요
An analog-to-digital converter (ADC) is a device that converts continuous analog signals into discrete digital numbers. The AD7683 is a successive approximation register (SAR) ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed, low power, and excellent accuracy, making them ideal for applications such as industrial process control, medical instrumentation, and portable battery-powered devices. The AD7683 belongs to the PulSAR family of ADCs, which are renowned for their high performance and ease of use.
Key features of the AD7683BCPZ include 16-bit resolution with no missing codes, a maximum sampling rate of 250 kSPS, and a typical power dissipation of only 12.5 mW at 5 V. The device offers a pseudo-differential analog input, an SPI-compatible serial interface, and a reference input that can be driven by an external reference. The AD7683 also includes a busy indicator and a power-down mode to conserve energy during idle periods.
The AD7683 uses a charge redistribution architecture with an internal conversion clock, eliminating the need for an external clock. The track-and-hold circuit has a short aperture delay, ensuring accurate sampling of high-frequency signals. The device operates over the industrial temperature range of -40°C to +85°C and is available in a lead-free, RoHS-compliant package.
Typical applications for the AD7683BCPZ include battery-powered instruments, data acquisition systems, industrial process control, medical devices, and portable electronics. Its low power consumption and small package make it suitable for space-constrained designs. The SPI-compatible interface simplifies connection to microcontrollers and DSPs.
When designing with the AD7683, ensure that the reference voltage is stable and noise-free, as it directly affects conversion accuracy. Use a low-pass filter on the analog input to remove high-frequency noise, and place decoupling capacitors close to the VDD and REF pins. The device's power-down mode can be used to reduce power consumption between conversions.
드롭인 대체품: AD7683BCPZ — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: AD7683BCPZ (동일 폼 팩터 및 풋프린트) — 차이점: Architecture, Data Interface, Operating Temperature Range, Package, Sampling Rate.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
AD7683BCPZRL7
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD7683BCPZ 최대 정격 & 전기적 특성
| 분해능 | 16 bit |
| 샘플링 속도 | 250 kSPS |
| Number of Input Channels | 1 |
| Input Type | Pseudo-Differential |
| Data Interface | SPI |
| Architecture | SAR |
| 공급 전압 | 2.7 V to 5.5 V |
| 기준 전압 | External, 0.5 V to VDD |
| Power Dissipation | 12.5 mW at 5 V |
| No Missing Codes | Yes (B grade) |
| 동작 온도 범위 | -40°C to +85°C |
| 패키지 | 8-Lead LFCSP (CP-8-2) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
| Terminal Form | NO LEAD |
| Number of Terminals | 8 |
AD7683BCPZ 핀 구성
| 핀 1 | IN — Analog input |
| 핀 2 | GND — Ground |
| 핀 3 | REF — Reference input |
| 핀 4 | VDD — Power supply |
| 핀 5 | SDO — Serial data output |
| 핀 6 | SCK — Serial clock input |
| 핀 7 | CS — Chip select |
| 핀 8 | BUSY — Busy indicator |
일반적인 애플리케이션
AD7683BCPZ 적합 용도: 6 애플리케이션s: Battery-Powered Instruments, Data Acquisition Systems, Industrial Process Control, Medical Instrumentation, Portable Electronics, Test and Measurement Equipment.
Battery-Powered Instruments
The AD7683BCPZ's low power consumption of 12.5 mW at 5 V and wide supply voltage range of 2.7 V to 5.5 V make it ideal for battery-powered instruments. Its power-down mode further extends battery life by reducing power to micro-watts during idle periods. The small 8-lead LFCSP package fits compact handheld designs, and the SPI interface simplifies connection to low-power microcontrollers. With 16-bit resolution and 250 kSPS sampling, it provides high accuracy for portable data loggers and field instruments.
추천
Data Acquisition Systems
The AD7683BCPZ is a high-speed, 16-bit SAR ADC with a 250 kSPS sampling rate, making it suitable for data acquisition systems that require accurate and fast conversion. Its pseudo-differential input helps reject common-mode noise, and the SPI interface allows easy integration with DSPs and FPGAs. The device's low power dissipation is beneficial in multi-channel systems where multiple ADCs are used. The internal conversion clock simplifies design by eliminating the need for an external clock source.
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Industrial Process Control
In industrial process control, the AD7683BCPZ provides 16-bit resolution and 250 kSPS sampling, enabling precise monitoring of analog signals such as temperature, pressure, and flow. Its industrial temperature range of -40°C to +85°C ensures reliable operation in harsh environments. The pseudo-differential input reduces noise pickup from industrial wiring, and the SPI interface allows easy connection to industrial microcontrollers. The device's low power consumption is advantageous in remote or loop-powered systems.
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Medical Instrumentation
The AD7683BCPZ is suitable for medical instrumentation such as patient monitors and diagnostic equipment, where high accuracy and low power are critical. Its 16-bit resolution ensures precise measurement of physiological signals, and the 250 kSPS sampling rate captures fast transients. The small package and low power consumption enable portable and wearable medical devices. The SPI interface simplifies integration with medical-grade microcontrollers, and the wide supply voltage range accommodates battery-powered designs.
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Portable Electronics
The AD7683BCPZ is ideal for portable electronics such as handheld meters, data loggers, and consumer devices. Its low power consumption of 12.5 mW at 5 V and power-down mode extend battery life, while the 2.7 V to 5.5 V supply range allows operation from a single lithium-ion cell. The compact 8-lead LFCSP package saves board space, and the SPI interface connects easily to application processors. With 16-bit resolution and 250 kSPS, it delivers high performance for portable measurement applications.
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Test and Measurement Equipment
The AD7683BCPZ is used in test and measurement equipment such as digital multimeters, data loggers, and spectrum analyzers. Its 16-bit resolution and 250 kSPS sampling rate provide accurate and fast measurements. The pseudo-differential input reduces noise, and the SPI interface allows easy integration with FPGAs and DSPs. The device's low power consumption is beneficial in portable test equipment, and the industrial temperature range ensures reliable operation in various environments.
추천
추천 제품 요약
엔지니어링 참조 데이터: AD7683BCPZ — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | AD7683BCPZRL7 | AD7683BRMZ | AD7682BCPZ |
|---|---|---|---|---|
| Package | 8-Lead LFCSP (CP-8-2) | 8-Lead LFCSP (CP-8-2) - same | 8-Lead MSOP | 20-Lead LFCSP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| Sampling Rate | 250 kSPS | 250 kSPS | 250 kSPS | 250 kSPS |
| Number of Channels | 1 | 1 | 1 | 4 |
| Input Type | Pseudo-Differential | Pseudo-Differential | Pseudo-Differential | Pseudo-Differential |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Power Dissipation | 12.5 mW at 5 V | 12.5 mW at 5 V | 12.5 mW at 5 V | 12.5 mW at 5 V |
주요 차별점
- Low power consumption (vs AD7682BCPZ)
- Small package (vs AD7683BRMZ)
- Single-channel simplicity (vs AD7682BCPZ)
설계 노트
The AD7683BCPZ operates from a single 2.7 V to 5.5 V supply. Use a low-noise LDO regulator to supply VDD, and place a 10 µF and 0.1 µF decoupling capacitor close to the VDD pin. The reference input (REF) should be driven by a low-impedance, low-noise reference source, with a 10 µF capacitor at the REF pin for stability.
For optimal performance, keep the analog input trace short and shielded from digital signals. Use a ground plane under the ADC and avoid routing high-speed digital lines near the analog input. Place the SPI interface lines (SCK, SDO, CS) away from the analog input to minimize crosstalk. The exposed pad on the LFCSP package should be soldered to the ground plane for thermal and electrical performance.
Ensure the reference voltage is stable and noise-free, as it directly affects conversion accuracy. Use a low-pass filter on the analog input to remove high-frequency noise. Avoid exceeding the absolute maximum ratings on the input pins. The power-down mode can be used to reduce power consumption, but ensure the device is fully powered up before starting a conversion.
규정 준수 정보
RoHS compliant per part number suffix 'Z'. Other compliance data not specified in provided sources.
