AD7680ARM-REEL - 16-Bit 100kSPS PulSAR ADC | Analog Devices
부품 번호: AD7680ARM-REEL ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.75 | $975.00 |
| 500 | $8.55 | $4,275.00 |
| 1,000 | $7.4 | $7,400.00 |
AD7680ARM-REEL 개요
An SAR ADC is a successive-approximation-register analog-to-digital converter, a subtype within the broader ADC category that performs bit-by-bit binary search conversion using an internal DAC and comparator. SAR ADCs occupy the middle of the converter hierarchy between flash converters (fastest, lowest resolution) and sigma-delta converters (slowest, highest resolution), offering an excellent balance of speed, resolution, and power. The AD7680 belongs to the PulSAR family from Analog Devices, which is positioned in the data converter > ADC > precision ADC > SAR ADC taxonomy and serves battery-powered and precision industrial systems.
Key features include a SPI-/DSP-compatible serial interface, a -40C to +85C industrial operating range, single-ended analog input, and internal conversion clock. The -REEL suffix indicates Tape & Reel packaging for high-volume surface-mount assembly, while the base AD7680ARM denotes the MSOP-8 industrial-grade variant (the same silicon is also offered in a 6-lead SOT-23 as AD7680ART).
Typical applications include portable instrumentation, battery-powered data acquisition, isolated sensor front ends, optical modules, and medical monitoring equipment. Its 16-bit no-missing-codes performance and 100 kSPS throughput make it well suited for multi-channel multiplexed systems where the small 8-MSOP footprint enables dense PCB layouts.
When designing, ensure the reference voltage (REF) is well decoupled with a low-ESR ceramic cap and that the SCK idle-low mode is used for daisy-chain configurations. The digital I/O lines should be kept short to minimize coupling from the digital supply into the analog input.
드롭인 대체품: AD7680ARM-REEL — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: AD7680ARM-REEL (동일 폼 팩터 및 풋프린트) — 차이점: Package, Resolution, Architecture, Input Voltage Range, Operating Temperature.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
AD7680ARM
✅ 드롭인✓ 재고 있음
$5.18 / 개
데이터시트 보기 →AD7680ARMZ
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD7680ARMZ-REEL7
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD7680ARM-REEL 최대 정격 & 전기적 특성
| 분해능 | 16 bits |
| Architecture | SAR (Successive Approximation Register) |
| Number of Channels | 1 single-ended input |
| Throughput Rate | 100 kSPS |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| Power Dissipation (typ) | 3 mW at 100 kSPS, 2.5 V supply |
| Power Dissipation (5 V) | 16.7 mW typical at 100 kSPS |
| Input Bandwidth (T/H) | >7 MHz |
| 입력 전압 범위 | 0 V to VDD (unipolar single-ended) |
| Data Interface | Serial SPI / DSP-compatible |
| Track-and-Hold | On-chip, wide bandwidth |
| 동작 온도 | -40C to +85C (Industrial) |
| 패키지 | 8-lead MSOP |
| 실장 유형 | Surface Mount |
| Packaging | Tape & Reel (-REEL suffix) |
AD7680ARM-REEL 핀 구성
| 핀 1 | REF — Reference voltage input/decoupling |
| 핀 2 | GND — Ground |
| 핀 3 | IN+ — Analog input (single-ended, 0 to VDD) |
| 핀 4 | VDD — Power supply (2.5 V to 5.5 V) |
| 핀 5 | SDOUT — Serial data output (SPI/DSP) |
| 핀 6 | SCK — Serial clock input |
| 핀 7 | CNV — Conversion start input |
| 핀 8 | GND — Ground (digital) |
일반적인 애플리케이션
AD7680ARM-REEL 적합 용도: 6 애플리케이션s: Portable Battery-Operated Data Acquisition, Industrial Sensor Signal Conditioning, Medical Monitoring Equipment, Optical Module Power Monitoring, Isolated Analog Front Ends, Precision Weigh Scales.
Portable Battery-Operated Data Acquisition
The AD7680ARM-REEL is purpose-built for battery-powered multi-channel data acquisition where its 3 mW typical dissipation at 100 kSPS with a 2.5 V supply extends operating life by 4x to 5x versus 5.5 V operation. The 16-bit no-missing-codes performance preserves measurement integrity across temperature swings, while the 8-MSOP footprint (3 mm x 3 mm) keeps the analog front end compact enough to fit in handheld enclosures alongside the analog mux and MCU.
추천
Industrial Sensor Signal Conditioning
In industrial PLC and process-control modules, the AD7680ARM-REEL digitizes 0-5 V sensor outputs (load cells, strain gauges, thermocouple amplifiers) with 16-bit resolution at 100 kSPS, supporting channel-update rates beyond typical 4-20 mA loop response times. The wide >7 MHz track-and-hold bandwidth suppresses input transient distortion during multiplexer switching, and the -40C to +85C industrial temperature range survives factory-floor conditions without thermal derating.
추천
Medical Monitoring Equipment
For portable patient monitors (pulse oximetry, blood pressure, glucose meters), the AD7680ARM-REEL's low 3 mW power dissipation and 16-bit dynamic range enable battery-powered operation while detecting microvolt-level bio-signals after external amplification. The SPI/DSP-compatible serial interface simplifies connection to low-power microcontrollers, and the small MSOP-8 footprint leaves room for additional isolation and patient-safety circuitry in compact medical device enclosures.
추천
Optical Module Power Monitoring
SFP/QSFP optical transceivers and tunable laser modules use the AD7680ARM-REEL to digitize received signal strength (RSSI) and back-facet photodiode current at 100 kSPS for closed-loop automatic gain control. Its 2.5 V to 5.5 V supply range matches common optical-module rails, and the 8-MSOP footprint fits the tight internal layout of pluggable transceivers where board real estate is at a premium.
추천
Isolated Analog Front Ends
In isolated sensor modules for high-voltage or hazardous environments, the AD7680ARM-REEL digitizes the analog signal on the field side of an isolator, transmitting only serial data across the isolation barrier. Its low power (3 mW at 2.5 V) reduces the heat load on the isolated side, while 16-bit resolution preserves measurement accuracy through the isolator's data-rate limitations.
추천
Precision Weigh Scales
Digital weighing scales use the AD7680ARM-REEL as the bridge-sensor digitizer, taking advantage of its 16-bit no-missing-codes performance to resolve milligram-scale variations in load-cell output. The 100 kSPS throughput enables fast settling for dynamic weighing applications, and the SPI-compatible serial output feeds directly to the display MCU without requiring additional glue logic.
추천
추천 제품 요약
엔지니어링 참조 데이터: AD7680ARM-REEL — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | AD7680ARM | AD7680ARMZ | AD7680ARMZ-REEL7 |
|---|---|---|---|---|
| Package | MSOP-8 | MSOP-8 | MSOP-8 | MSOP-8 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits |
| Throughput | 100 kSPS | 100 kSPS | 100 kSPS | 100 kSPS |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Packaging | Tape & Reel (13-inch) | Tube | Tube | Tape & Reel (7-inch) |
| RoHS Status | Compliant (depends on reel code) | Compliant | Compliant | Compliant |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
주요 차별점
- Lowest power 16-bit SAR at 100 kSPS in MSOP-8 (vs AD7650ACPZRL (16-bit 500 kSPS in LFCSP))
- Tiny footprint for space-constrained designs (vs AD7476BRTZ-REEL (8-pin SOT-23))
- Wide input bandwidth for multiplexed channels (vs AD7680ART-REEL7 (SOT-23-6 variant))
설계 노트
Estimated: At VDD=5 V, VREF=5 V, IN+=0 V, throughput=100 kSPS, the AD7680 draws 3.3 mA typical (16.7 mW). Add a 0.1 uF ceramic decoupling cap adjacent to VDD and a bulk 10 uF tantalum/ceramic at the regulator output. For lowest noise, tie REF to a low-impedance, low-noise reference such as ADR01/ADR02; do not drive REF from a resistive divider from VDD.
Keep the analog input trace short and guarded with a ground pour. Place the REF decoupling cap within 2 mm of the REF pin. Route SCK, SDOUT, and CNV away from IN+ and REF traces to avoid digital noise coupling. The exposed pad (if present on the MSOP variant) should be soldered to a clean analog ground plane for thermal relief.
Do not leave CNV floating; tie it to the MCU control GPIO. Ensure SCK idle state matches your selected interface mode (CS idle-low for SPI). Avoid driving IN+ beyond VDD+0.3 V or below GND-0.3 V; the input ESD clamps will conduct and degrade linearity. For multiplexed systems, allow at least one full conversion cycle for the input to settle after switching channels.
규정 준수 정보
RoHS compliance verified on Analog Devices product page. Industrial -40C to +85C grade; not AEC-Q100 qualified. Lead-free MSOP-8 package per JEDEC J-STD-020 reflow.
