AD7175-8BCPZ-RL7 - 24-Bit Sigma-Delta ADC | Analog Devices
料号： AD7175-8BCPZ-RL7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 概述
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.
直接替换替代料： AD7175-8BCPZ-RL7 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： AD7175-8BCPZ-RL7 （相同外形与封装尺寸） ——差异在于 Package, Resolution, Interface, Digital Supply Voltage, Number of Channels.
快速对比工具——选择替代料号进行并排对比：
AD7175-8BCPZ
✅ 直接替换✓ 有现货
$20.82 / 个
查看数据手册 →AD7175-8BCPZ-RL
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
AD7177-2BRUZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$19.84 / 个
查看数据手册 →ADS1261
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
AD7172-2BRUZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$8.64 / 个
查看数据手册 →AD7175-8BCPZ-RL7 最大额定值与电气特性
| 分辨率 | 24 bit |
| Number of Channels | 8 differential or 16 single-ended |
| 采样率 | 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 |
| 工作温度范围 | -40°C to +105°C |
| 封装 | 40-LFCSP-WQ (6x6 mm) |
| 安装类型 | Surface Mount |
| RoHS 状态 | RoHS3 Compliant |
| MSL 等级 | 3 (168 hours) |
| Reference Type | External |
| Number of Inputs | 8, 16 |
AD7175-8BCPZ-RL7 引脚配置
| 引脚 1 | AVDD — Analog power supply |
| 引脚 2 | AVSS — Analog ground |
| 引脚 3 | AIN0 — Analog input 0 |
| 引脚 4 | AIN1 — Analog input 1 |
| 引脚 5 | AIN2 — Analog input 2 |
| 引脚 6 | AIN3 — Analog input 3 |
| 引脚 7 | AIN4 — Analog input 4 |
| 引脚 8 | AIN5 — Analog input 5 |
| 引脚 9 | AIN6 — Analog input 6 |
| 引脚 10 | AIN7 — Analog input 7 |
| 引脚 11 | REF+ — Positive reference input |
| 引脚 12 | REF- — Negative reference input |
| 引脚 13 | DVDD — Digital power supply |
| 引脚 14 | DGND — Digital ground |
| 引脚 15 | SCLK — Serial clock input |
| 引脚 16 | DIN — Serial data input |
| 引脚 17 | DOUT — Serial data output |
| 引脚 18 | CS — Chip select (active low) |
| 引脚 19 | SYNC — Synchronization input |
| 引脚 20 | RESET — Reset input (active low) |
典型应用
AD7175-8BCPZ-RL7 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： AD7175-8BCPZ-RL7 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Higher data rate than AD7172-2BRUZ （对比 AD7172-2BRUZ)
- More input channels than AD7177-2BRUZ （对比 AD7177-2BRUZ)
- Lower noise than ADS1261 （对比 ADS1261)
设计说明
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.
合规信息
RoHS3 compliant per PartGenie. REACH unaffected. MSL 3 (168 hours).
