AD7175-2BRUZ-RL7 - 24-Bit 250kSPS Sigma-Delta ADC | Analog Devices
MPN： AD7175-2BRUZ-RL7 ✓ 啟用中AD7175-2BRUZ-RL7 概覽
A sigma-delta ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution (up to 24 bits) with excellent linearity and low noise. It is widely used in precision measurement, process control, and medical instrumentation where accurate conversion of slow-varying signals is critical. The AD7175-2 belongs to the ADC family within the data converter category, which is part of the broader analog signal chain in electronic systems.
Key features include a maximum output data rate of 250 kSPS, 20 µs settling time for fast channel switching, and true rail-to-rail input buffers that simplify driving high-impedance sources. The device offers a configurable digital filter with 50/60 Hz rejection, ideal for industrial power-line noise suppression. It also provides a fully differential reference input, supporting low-noise references like the ADR445, ADR444, and ADR441.
The AD7175-2 integrates a precision sigma-delta modulator and digital filter, achieving excellent noise performance and linearity. The per-channel configuration allows users to optimize gain, filter, and output rate for each input, enhancing flexibility in multi-channel systems. The device includes a SPI interface for communication and supports both internal and external clock options.
Typical applications include process control (PLC/DCS modules) for temperature and pressure measurement, medical and scientific multichannel instrumentation, and chromatography. The fast settling time makes it suitable for multiplexed systems requiring rapid channel-to-channel updates.
When designing with this ADC, ensure proper decoupling of the analog and digital supplies and use a low-noise reference to achieve specified performance. The SPI interface should be isolated if used in noisy industrial environments.
直接替換替代品，適用於 AD7175-2BRUZ-RL7 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： AD7175-2BRUZ-RL7 （相同外形與佔位） — 差異在於 Sampling Rate, Input Type, Data Interface, Number of Channels, Reference Type.
AD7175-2BRUZ
✅ 直接替換聯絡詢價
查看資料表 →AD7172-2BRUZ-RL7
✅ 直接替換✗ 缺貨
$7.1 / 單位
查看資料表 →AD7177-2BRUZ-RL7
✅ 直接替換 ⚠️ 規格未經驗證✗ 缺貨
$17.8 / 單位
查看資料表 →AD7124-4BRUZ-RL
✅ 直接替換 ⚠️ 規格未經驗證✗ 缺貨
$7.9545 / 單位
查看資料表 →AD7175-2BRUZ-RL7 最大額定值與電氣特性
| 解析度 | 24 bit |
| Number of Channels | 2 differential or 4 single-ended |
| 取樣率 | 250 kSPS |
| Settling Time | 20 µs |
| Input Type | Differential, Single-Ended |
| 介面類型 | SPI |
| Analog Supply Voltage | 2 V to 5.5 V |
| Digital Supply Voltage | 2 V to 5.5 V |
| 工作溫度範圍 | -40°C to +105°C |
| 封裝 | 24-TSSOP |
| 安裝方式 | SMD/SMT |
| Reference Type | External |
| Architecture | Sigma-Delta |
| RoHS | Compliant |
| REACH | Compliant |
AD7175-2BRUZ-RL7 腳位配置
| 腳位 1 | AVDD — Analog power supply |
| 腳位 2 | AIN0 — Analog input 0 |
| 腳位 3 | AIN1 — Analog input 1 |
| 腳位 4 | AIN2 — Analog input 2 |
| 腳位 5 | AIN3 — Analog input 3 |
| 腳位 6 | REF+ — Positive reference input |
| 腳位 7 | REF- — Negative reference input |
| 腳位 8 | GND — Ground |
| 腳位 9 | SCLK — Serial clock input |
| 腳位 10 | DIN — Serial data input |
| 腳位 11 | DOUT — Serial data output |
| 腳位 12 | CS — Chip select |
典型應用
AD7175-2BRUZ-RL7 適用於 6 應用s: Process Control (PLC/DCS Modules), Medical and Scientific Multichannel Instrumentation, Chromatography, Temperature and Pressure Measurement, Data Acquisition Systems, Industrial Automation.
Process Control (PLC/DCS Modules)
The AD7175-2BRUZ-RL7 is ideal for process control modules requiring high-resolution, fast-settling ADC conversion. Its 24-bit resolution and 250 kSPS sampling rate enable accurate measurement of temperature and pressure sensors. The 20 µs settling time allows rapid multiplexing of multiple channels, improving system throughput. The configurable digital filter with 50/60 Hz rejection ensures reliable operation in industrial environments with power-line noise. The true rail-to-rail buffers simplify interfacing to high-impedance sensors without additional signal conditioning.
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Medical and Scientific Multichannel Instrumentation
In medical instrumentation, the AD7175-2BRUZ-RL7 provides high-resolution conversion for multichannel monitoring systems. Its 24-bit resolution and low noise ensure accurate measurement of biological signals. The fast settling time supports rapid scanning of multiple channels, essential for real-time patient monitoring. The wide supply voltage range and SPI interface facilitate integration into portable devices. The device's low power consumption extends battery life in wearable monitors.
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Chromatography
The AD7175-2BRUZ-RL7 is well-suited for chromatography systems that require precise measurement of detector signals. Its 24-bit resolution and low noise enable detection of small analyte concentrations. The 250 kSPS sampling rate captures fast-eluting peaks accurately. The configurable input channels allow connection to multiple detectors. The device's fast settling time ensures minimal data loss during rapid scans.
推薦
Temperature and Pressure Measurement
The AD7175-2BRUZ-RL7 excels in temperature and pressure measurement applications due to its high resolution and accuracy. Its 24-bit resolution allows detection of minute changes in sensor output. The true rail-to-rail buffers accommodate various sensor impedances. The device's digital filter rejects 50/60 Hz interference, common in industrial settings. The SPI interface enables easy integration with microcontrollers for data logging and control.
推薦
Data Acquisition Systems
The AD7175-2BRUZ-RL7 is a key component in high-speed data acquisition systems. Its 250 kSPS sampling rate and 24-bit resolution provide high-fidelity digitization of analog signals. The fast settling time enables efficient multiplexing of multiple input channels. The device's low noise performance ensures accurate representation of small signals. The SPI interface allows straightforward connection to DSPs or FPGAs for real-time processing.
推薦
Industrial Automation
In industrial automation, the AD7175-2BRUZ-RL7 provides precise analog-to-digital conversion for control systems. Its 24-bit resolution and fast settling time enable accurate monitoring of process variables. The device's robust design operates reliably in harsh environments with a temperature range of -40°C to +105°C. The configurable digital filter rejects electrical noise, ensuring stable readings. The SPI interface supports communication with industrial controllers.
推薦
推薦產品摘要
工程參考資料，適用於 AD7175-2BRUZ-RL7 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | AD7175-2BRUZ | AD7172-2BRUZ-RL7 | AD7177-2BRUZ-RL7 |
|---|---|---|---|---|
| Package | 24-TSSOP | 24-TSSOP | 24-TSSOP | 24-TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 24 bit | 24 bit | 24 bit | 32 bit |
| Max Sampling Rate | 250 kSPS | 250 kSPS | 31.25 kSPS | 10 kSPS |
| Settling Time | 20 µs | 20 µs | 280 µs | 500 µs |
| Input Channels | 2 diff / 4 SE | 2 diff / 4 SE | 2 diff / 4 SE | 2 diff / 4 SE |
| Supply Voltage | 2 V to 5.5 V | 2 V to 5.5 V | 2 V to 5.5 V | 2 V to 5.5 V |
| Interface | SPI | SPI | SPI | SPI |
主要差異化特點
- Higher maximum sampling rate (250 kSPS) compared to AD7172-2BRUZ-RL7 (31.25 kSPS) (對比AD7172-2BRUZ-RL7)
- Faster settling time (20 µs) vs AD7172-2BRUZ-RL7 (280 µs) (對比AD7172-2BRUZ-RL7)
- Lower cost compared to AD7177-2BRUZ-RL7 (對比AD7177-2BRUZ-RL7)
設計說明
Ensure clean and stable power supplies for the AD7175-2BRUZ-RL7. Use separate analog and digital supply pins with proper decoupling capacitors (e.g., 10 µF and 0.1 µF) placed close to the device. A low-noise LDO regulator is recommended for the analog supply to minimize noise coupling into the ADC.
For optimal performance, use a solid ground plane and separate analog and digital ground planes if possible. Place the ADC close to the sensor to minimize trace length and reduce noise pickup. Route sensitive analog traces away from digital signals and use guard rings around analog inputs if necessary.
Avoid exceeding the absolute maximum ratings for supply voltages and input pins. Ensure the reference voltage is stable and low-noise; use a precision reference like ADR445. Do not leave unused analog inputs floating; tie them to a known potential. Verify SPI communication timing to prevent data corruption.
合規資訊
RoHS and REACH compliance confirmed from distributor data. AEC-Q100 not applicable for this industrial ADC.
