AD4632-24BCPZ - 24-Bit 500kSPS Dual SAR ADC | Analog Devices
MPN： AD4632-24BCPZ ✓ 啟用中AD4632-24BCPZ 概覽
A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It is known for its high resolution, low power consumption, and fast conversion times, making it ideal for precision measurement applications. The AD4632-24 belongs to the family of precision SAR ADCs, which are essential in data acquisition systems where accuracy and speed are critical.
Key features of the AD4632-24BCPZ include a guaranteed maximum ±0.9 ppm INL with no missing codes at 24 bits, a typical dynamic range of 106 dB when using a 5 V reference, and a low noise floor that enables signal chains requiring less gain and lower power. The device operates over the industrial temperature range of -40°C to +125°C, ensuring reliable performance in harsh environments.
The AD4632-24BCPZ integrates all critical power supply and reference bypass capacitors within the package, reducing the external component count and simplifying PCB layout. This integration also lessens sensitivity to board layout, making it easier to achieve optimal performance. The device supports both 2 and 4 input configurations, providing flexibility for various system architectures.
Typical applications include precision data acquisition systems, medical instrumentation, industrial process control, and scientific instrumentation. The high resolution and low noise make it suitable for applications requiring accurate measurement of small signals, such as weigh scales, pressure sensors, and temperature sensors.
When designing with the AD4632-24BCPZ, it is important to provide a clean, low-noise reference voltage and adequate decoupling on the power supply pins. The integrated bypass capacitors help, but external decoupling is still recommended for optimal performance. Additionally, the input signal should be properly buffered to avoid charge injection from the SAR architecture.
直接替換替代品，適用於 AD4632-24BCPZ — 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： AD4632-24BCPZ （相同外形與佔位） — 差異在於 Sampling Rate, Input Type, Package, Architecture, Resolution.
AD4630-24BCPZ
✅ 直接替換聯絡詢價
查看資料表 →AD4632-24BBCZ
✅ 直接替換📋 參考替代品（不在目錄中）
AD4630-24BBCZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD7621BCPZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD7610BCPZ
✅ 直接替換 ⚠️ 規格未經驗證✗ 缺貨
$27.8409 / 單位
查看資料表 →AD4632-24BCPZ 最大額定值與電氣特性
| 解析度 | 24 bits |
| Number of Channels | 2, 4 input |
| 取樣率 | 500 kSPS |
| Architecture | SAR |
| INL (max) | ±0.9 ppm |
| Dynamic Range | 106 dB (typ) with 5V reference |
| 工作溫度範圍 | -40°C to +125°C |
| 封裝 | 64-CSPBGA (7x7 mm) |
| Input Type | Differential |
| Reference Type | External |
| RoHS 狀態 | Compliant |
AD4632-24BCPZ 腳位配置
| 腳位 A1 | VREF — Reference voltage input |
| 腳位 A2 | AVDD — Analog power supply |
| 腳位 A3 | AVSS — Analog ground |
| 腳位 B1 | IN+ — Positive analog input |
| 腳位 B2 | IN- — Negative analog input |
| 腳位 C1 | DVDD — Digital power supply |
| 腳位 C2 | DGND — Digital ground |
| 腳位 D1 | SCLK — Serial clock input |
| 腳位 D2 | SDI — Serial data input |
| 腳位 E1 | SDO — Serial data output |
| 腳位 E2 | CNV — Conversion start input |
| 腳位 F1 | BUSY — Busy output |
典型應用
AD4632-24BCPZ 適用於 6 應用s: Precision Data Acquisition Systems, Medical Instrumentation, Industrial Process Control, Scientific Instrumentation, Audio Test and Measurement, Vibration and Condition Monitoring.
Precision Data Acquisition Systems
The AD4632-24BCPZ is ideal for precision data acquisition systems that require high resolution and accuracy. Its 24-bit resolution and ±0.9 ppm INL ensure accurate measurement of analog signals. The Easy Drive™ architecture simplifies the front-end design, reducing the need for external drivers. With a 500 kSPS sampling rate, it can capture fast-changing signals while maintaining precision. The integrated bypass capacitors reduce board space and layout sensitivity, making it easier to achieve optimal performance in compact systems.
推薦
Medical Instrumentation
In medical instrumentation, the AD4632-24BCPZ provides the high resolution and low noise required for accurate physiological signal measurement. Its 24-bit resolution and 106 dB dynamic range enable detection of small signals such as ECG, EEG, and blood pressure. The wide operating temperature range of -40°C to +125°C ensures reliability in clinical environments. The integrated bypass capacitors help maintain signal integrity, which is critical for patient safety and diagnostic accuracy.
推薦
Industrial Process Control
The AD4632-24BCPZ is well-suited for industrial process control applications where precise monitoring of sensors is essential. Its high resolution and low noise allow accurate measurement of temperature, pressure, and flow. The device's robustness over -40°C to +125°C makes it suitable for harsh industrial environments. The Easy Drive™ architecture reduces the need for external components, simplifying system design and improving reliability. The 500 kSPS sampling rate is sufficient for most process control loops.
推薦
Scientific Instrumentation
For scientific instrumentation, the AD4632-24BCPZ offers the precision and speed needed for experiments and measurements. Its 24-bit resolution and ±0.9 ppm INL ensure accurate data collection. The low noise floor enables detection of weak signals, which is crucial in fields like spectroscopy and particle physics. The compact CSP_BGA package allows for high-density designs, and the integrated bypass capacitors reduce external component count, making it easier to build compact, high-performance instruments.
推薦
Audio Test and Measurement
The AD4632-24BCPZ can be used in audio test and measurement equipment to analyze audio signals with high precision. Its 24-bit resolution and 106 dB dynamic range allow accurate measurement of audio distortion and noise. The low noise floor ensures that the ADC does not introduce significant noise into the measurement path. The 500 kSPS sampling rate is sufficient for audio frequencies up to 250 kHz, covering most audio testing needs. The integrated bypass capacitors help maintain signal integrity in sensitive audio circuits.
推薦
Vibration and Condition Monitoring
In vibration and condition monitoring, the AD4632-24BCPZ provides the high resolution and dynamic range needed to capture small vibrations and detect early signs of equipment failure. Its 24-bit resolution and 106 dB dynamic range allow accurate measurement of vibration amplitudes. The device's wide temperature range makes it suitable for industrial environments. The Easy Drive™ architecture simplifies the interface to accelerometers and other sensors, reducing design complexity. The 500 kSPS sampling rate is adequate for most vibration monitoring applications.
推薦
推薦產品摘要
工程參考資料，適用於 AD4632-24BCPZ — 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 | AD4630-24BCPZ | AD4632-24BBCZ | AD7621BCPZ |
|---|---|---|---|---|
| Package | 64-CSPBGA (7x7) | 64-CSPBGA (7x7) | 64-CSPBGA (7x7) | 64-CSPBGA (7x7) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 24 bits | 24 bits | 24 bits | 16 bits |
| Sampling Rate | 500 kSPS | 2 MSPS | 500 kSPS | 3 MSPS |
| INL (max) | ±0.9 ppm | ±0.9 ppm | ±0.9 ppm | ±2 LSB |
| Dynamic Range | 106 dB | 106 dB | 106 dB | 89 dB |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +85°C |
| Integrated Bypass Caps | Yes | Yes | Yes | No |
主要差異化特點
- Integrated bypass capacitors (對比AD7621BCPZ)
- Higher resolution (對比AD7621BCPZ)
- Wider temperature range (對比AD7621BCPZ)
設計說明
Provide clean, low-noise power supplies to AVDD and DVDD. Use low-dropout regulators (LDOs) with output noise below 10 µVrms to avoid degrading the ADC's performance. Decouple each supply pin with 0.1 µF and 10 µF capacitors placed close to the pins. The integrated bypass capacitors help, but external decoupling is still recommended for optimal performance.
For optimal performance, use a solid ground plane and separate analog and digital ground planes if possible. Place the ADC close to the signal source to minimize trace length and reduce noise pickup. Route sensitive analog traces away from digital traces and avoid crossing them. The CSP_BGA package requires careful PCB layout to ensure proper solder joint reliability; follow the manufacturer's recommended land pattern.
Ensure the reference voltage is stable and low-noise, as it directly affects the ADC's accuracy. Use a precision reference like the ADR4550 or ADR445. Avoid driving the analog inputs with high-impedance sources without buffering, as the SAR architecture can cause charge injection. Use an op-amp buffer with low output impedance to drive the inputs.
合規資訊
RoHS compliant per Analog Devices product page. Other compliance details not specified in the provided data.
