AD7175-8BCPZ-RL7 - 24-Bit Sigma-Delta ADC | Analog Devices
부품 번호: AD7175-8BCPZ-RL7 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $13.86 | $13.86 |
| 10 | $12.47 | $124.70 |
| 100 | $11.09 | $1,109.00 |
| 500 | $9.7 | $4,850.00 |
| 1,000 | $8.32 | $8,320.00 |
AD7175-8BCPZ-RL7 개요
A sigma-delta ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution. It is part of the ADC family, which falls under data converters, a subset of analog-to-digital conversion in the broader category of mixed-signal ICs. Sigma-delta ADCs are known for their excellent linearity and low noise, making them ideal for precision measurement applications.
Key features of the AD7175-8 include 24-bit resolution, 8 differential or 16 single-ended inputs, and a maximum output data rate of 250 kSPS. It operates from a 2.5 V to 5.5 V analog supply and a 2.3 V to 5.5 V digital supply. The device offers a programmable digital filter, allowing trade-offs between output data rate and noise. It also includes a 24-bit sigma-delta modulator, a digital filter, and a serial interface that supports SPI. The AD7175-8 is available in a 40-lead LFCSP-WQ (6x6 mm) package, which is RoHS3 compliant and has an MSL rating of 3 (168 hours).
The AD7175-8 uses a high-performance sigma-delta architecture with a digital filter that can be configured for various output data rates and settling times. The device includes a multiplexer that allows up to 16 single-ended or 8 differential inputs. It also features an internal oscillator, eliminating the need for an external clock. The ADC provides a 24-bit output with a noise-free resolution of up to 24 bits at low data rates. The device is specified for operation over the industrial temperature range of -40°C to +105°C.
Typical applications for the AD7175-8 include process control, industrial automation, temperature and pressure measurement, and precision data acquisition systems. Its high resolution and low noise make it suitable for applications requiring accurate measurement of slow-changing signals. The device is also used in weigh scales, medical instrumentation, and energy monitoring.
When designing with the AD7175-8, it is important to provide adequate decoupling on the power supply pins and to use a clean analog ground plane. The reference inputs should be driven by a low-impedance source to maintain accuracy. The SPI interface should be isolated from noisy digital circuitry to prevent noise coupling into the analog section.
드롭인 대체품: AD7175-8BCPZ-RL7 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: AD7175-8BCPZ-RL7 (동일 폼 팩터 및 풋프린트) — 차이점: Package, Resolution, Interface, Digital Supply Voltage, Number of Channels.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
AD7175-8BCPZ
✅ 드롭인✓ 재고 있음
$20.82 / 개
데이터시트 보기 →AD7175-8BCPZ-RL
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
AD7177-2BRUZ
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$19.84 / 개
데이터시트 보기 →ADS1261
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
AD7172-2BRUZ
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$8.64 / 개
데이터시트 보기 →AD7175-8BCPZ-RL7 최대 정격 & 전기적 특성
| 분해능 | 24 bit |
| Number of Channels | 8 differential or 16 single-ended |
| 샘플링 속도 | 250 kSPS |
| Input Type | Differential, Single-Ended |
| Data Interface | SPI |
| Architecture | Sigma-Delta |
| Analog Supply Voltage | 2.5 V to 5.5 V |
| Digital Supply Voltage | 2.3 V to 5.5 V |
| 동작 온도 범위 | -40°C to +105°C |
| 패키지 | 40-LFCSP-WQ (6x6 mm) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | RoHS3 Compliant |
| MSL 레벨 | 3 (168 hours) |
| Reference Type | External |
| Number of Inputs | 8, 16 |
AD7175-8BCPZ-RL7 핀 구성
| 핀 1 | AVDD — Analog power supply |
| 핀 2 | AVSS — Analog ground |
| 핀 3 | AIN0 — Analog input 0 |
| 핀 4 | AIN1 — Analog input 1 |
| 핀 5 | AIN2 — Analog input 2 |
| 핀 6 | AIN3 — Analog input 3 |
| 핀 7 | AIN4 — Analog input 4 |
| 핀 8 | AIN5 — Analog input 5 |
| 핀 9 | AIN6 — Analog input 6 |
| 핀 10 | AIN7 — Analog input 7 |
| 핀 11 | REF+ — Positive reference input |
| 핀 12 | REF- — Negative reference input |
| 핀 13 | DVDD — Digital power supply |
| 핀 14 | DGND — Digital ground |
| 핀 15 | SCLK — Serial clock input |
| 핀 16 | DIN — Serial data input |
| 핀 17 | DOUT — Serial data output |
| 핀 18 | CS — Chip select (active low) |
| 핀 19 | SYNC — Synchronization input |
| 핀 20 | RESET — Reset input (active low) |
일반적인 애플리케이션
AD7175-8BCPZ-RL7 적합 용도: 6 애플리케이션s: Process Control, Industrial Automation, Temperature Measurement, Precision Data Acquisition, Weigh Scales, Medical Instrumentation.
Process Control
The AD7175-8BCPZ-RL7 is ideal for process control systems that require high-resolution, low-noise measurement of analog signals from sensors such as pressure, flow, and level transmitters. Its 24-bit resolution and 250 kSPS data rate enable accurate and fast conversion of multiple channels, while the integrated input buffers simplify interfacing to high-impedance sensors. The device's programmable digital filter allows trade-offs between speed and noise, making it adaptable to various control loop requirements. In a typical process control loop, the ADC digitizes sensor outputs and feeds the data to a microcontroller via SPI, ensuring precise monitoring and control of industrial processes.
추천
Industrial Automation
In industrial automation, the AD7175-8BCPZ-RL7 provides high-accuracy analog-to-digital conversion for monitoring and control applications. Its 8 differential or 16 single-ended inputs allow connection to multiple sensors, such as temperature, strain, and position sensors, reducing component count. The device's fast settling time and 250 kSPS data rate enable real-time monitoring of fast-changing signals, while the SPI interface ensures easy integration with industrial microcontrollers. The wide operating temperature range of -40°C to +105°C makes it suitable for harsh factory environments. The ADC's low noise performance ensures reliable data acquisition, critical for maintaining product quality and operational efficiency.
추천
Temperature Measurement
The AD7175-8BCPZ-RL7 excels in temperature measurement applications, offering 24-bit resolution and low noise to accurately digitize signals from thermocouples, RTDs, and thermistors. Its integrated input buffers allow direct connection to high-impedance sensors without additional signal conditioning. The device supports multiple channels, enabling simultaneous monitoring of multiple temperature points. With a maximum data rate of 250 kSPS, it can handle fast temperature changes, while the programmable digital filter helps reduce noise for stable readings. The wide supply voltage range and industrial temperature rating make it suitable for both laboratory and field applications, ensuring precise temperature monitoring in various environments.
추천
Precision Data Acquisition
The AD7175-8BCPZ-RL7 is a cornerstone for precision data acquisition systems, providing 24-bit resolution and low noise to capture accurate measurements from various sensors. Its 8 differential or 16 single-ended inputs allow multiplexing of multiple signals, reducing system complexity. The device's fast settling time and 250 kSPS data rate enable high-throughput data logging, while the SPI interface facilitates easy connection to data acquisition boards. The integrated input buffers and internal oscillator simplify design, and the programmable digital filter allows optimization for specific signal characteristics. This makes the ADC ideal for applications such as vibration analysis, power monitoring, and scientific instrumentation where accuracy is paramount.
추천
Weigh Scales
The AD7175-8BCPZ-RL7 is well-suited for weigh scale applications, offering high resolution and low noise to accurately measure load cell outputs. Its 24-bit resolution ensures precise weight readings, while the integrated input buffers allow direct connection to load cells without additional amplification. The device supports multiple channels, enabling multi-axis or multi-sensor weighing systems. With a maximum data rate of 250 kSPS, it can handle fast weight changes, and the programmable digital filter helps reduce vibration noise. The wide supply voltage range and industrial temperature rating make it suitable for both bench and industrial scales, ensuring reliable and accurate weight measurement.
추천
Medical Instrumentation
In medical instrumentation, the AD7175-8BCPZ-RL7 provides high-precision analog-to-digital conversion for devices such as patient monitors, diagnostic equipment, and laboratory analyzers. Its 24-bit resolution and low noise ensure accurate measurement of physiological signals, while the multiple input channels allow monitoring of various parameters simultaneously. The device's fast settling time and 250 kSPS data rate enable real-time signal processing, and the SPI interface simplifies integration with medical-grade microcontrollers. The wide operating temperature range and RoHS compliance make it suitable for medical devices that must meet stringent regulatory standards. The ADC's low power consumption and small package size are additional benefits for portable medical devices.
추천
추천 제품 요약
엔지니어링 참조 데이터: AD7175-8BCPZ-RL7 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | AD7175-8BCPZ | AD7175-8BCPZ-RL | AD7177-2BRUZ | ADS1261 | AD7172-2BRUZ |
|---|---|---|---|---|---|---|
| Package | 40-LFCSP-WQ (6x6 mm) | 40-LFCSP-WQ (6x6 mm) | 40-LFCSP-WQ (6x6 mm) | 40-LFCSP-WQ (6x6 mm) | 40-LFCSP-WQ (6x6 mm) | 40-LFCSP-WQ (6x6 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Analog Devices |
| Resolution | 24 bit | 24 bit | 24 bit | 32 bit | 24 bit | 24 bit |
| Max Data Rate | 250 kSPS | 250 kSPS | 250 kSPS | 10 kSPS | 40 kSPS | 31.25 kSPS |
| Number of Channels | 8 diff / 16 SE | 8 diff / 16 SE | 8 diff / 16 SE | 2 diff / 4 SE | 5 diff / 10 SE | 2 diff / 4 SE |
| Interface | SPI | SPI | SPI | SPI | SPI | SPI |
| Analog Supply Voltage | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 4.75V to 5.25V | 2.5V to 5.5V |
| Operating Temperature | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +125°C | -40°C to +105°C |
주요 차별점
- Higher data rate than AD7172-2BRUZ (vs AD7172-2BRUZ)
- More input channels than AD7177-2BRUZ (vs AD7177-2BRUZ)
- Lower noise than ADS1261 (vs ADS1261)
설계 노트
Provide adequate decoupling on the AVDD and DVDD pins. Use 10uF and 0.1uF capacitors in parallel close to the power pins to filter low and high frequency noise. A clean analog supply is critical for achieving the specified 24-bit performance.
Use a clean analog ground plane separate from digital ground, and connect them at a single point. Place the ADC close to the sensors to minimize trace lengths and reduce noise pickup. Ensure the reference inputs are driven by a low-impedance source to maintain accuracy.
Isolate the SPI lines from analog inputs to prevent digital noise coupling. Use series resistors on the SPI lines if necessary. Keep the analog input traces short and shielded if possible. Follow the layout guidelines in the AD7175-8 datasheet for optimal performance.
규정 준수 정보
RoHS3 compliant per PartGenie. REACH unaffected. MSL 3 (168 hours).
