AD7385BCPZ - 16-Bit Quad SAR ADC | Analog Devices
部品番号: AD7385BCPZ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.8 | $980.00 |
| 500 | $8.75 | $4,375.00 |
| 1,000 | $7.9 | $7,900.00 |
AD7385BCPZ 概要
An ADC (analog-to-digital converter) is an electronic component that converts continuous analog signals into discrete digital values. The AD7385BCPZ is a SAR ADC, which uses a binary search algorithm to approximate the input voltage with high speed and accuracy. SAR ADCs are widely used in applications requiring a balance of speed, resolution, and power efficiency, such as motor control, power monitoring, and data acquisition systems. The AD7385BCPZ belongs to the family of high-speed, low-power ADCs from Analog Devices, which are known for their excellent AC performance and ease of use.
Key features of the AD7385BCPZ include 16-bit resolution, four simultaneously sampled input channels, and a maximum sampling rate of 2 MSPS (megasamples per second). The device supports both external and internal reference options, and includes a built-in FIFO buffer and soft reset functionality. It also features a power-on reset and simultaneous sampling capability, which is essential for applications that require accurate phase alignment between multiple channels. The ADC achieves a signal-to-noise ratio (SNR) of 86.7 dB and a total harmonic distortion (THD) of -100 dB, ensuring high-fidelity signal conversion.
From a technical perspective, the AD7385BCPZ integrates a precision reference buffer and a high-speed SPI interface that supports daisy-chaining for multiple devices. The device operates over a temperature range of -40°C to +125°C, making it suitable for harsh environments. The LFCSP package provides excellent thermal performance and a small footprint, enabling high-density PCB layouts. The ADC's low power consumption of 200 µA in standby mode makes it ideal for battery-powered and energy-efficient designs.
Typical applications for the AD7385BCPZ include motor control, power monitoring, data acquisition systems, and industrial automation. In motor control, the simultaneous sampling capability ensures accurate current and voltage measurements for precise control loops. In power monitoring, the high resolution and fast sampling rate enable accurate measurement of AC and DC power parameters. The device is also well-suited for vibration analysis and other condition monitoring applications where multi-channel synchronization is critical.
When designing with the AD7385BCPZ, it is important to provide a clean, low-noise power supply and proper decoupling to achieve optimal performance. The reference input should be bypassed with a 10 µF capacitor to ensure stability. Additionally, the SPI interface should be routed with controlled impedance to minimize signal integrity issues at high data rates.
ドロップイン代替品: AD7385BCPZ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: AD7385BCPZ （同一形状・フットプリント） — 相違点: Number of Channels, Resolution, Sampling Rate, Reference Type, Input Type.
クイック比較ツール — 並列比較する代替部品を選択:
AD7386-4BCPZ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AD7383-4BCPZ
✅ ドロップイン✓ 在庫あり
$30.5 / 個
データシートを見る →AD7384-4BCPZ
✅ ドロップイン✓ 在庫あり
$11.05 / 個
データシートを見る →AD4696BCPZ
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$11.75 / 個
データシートを見る →AD4695BCPZ
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$18.5 / 個
データシートを見る →AD4694BCPZ
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$8.1 / 個
データシートを見る →AD7385BCPZ 最大定格＆電気的特性
| 分解能 | 16-bit |
| Number of Channels | 4 (simultaneous sampling) |
| サンプリングレート | 2 MSPS |
| Input Type | Single-ended |
| インターフェース | SPI |
| 電源電圧 | 3.0 V to 3.3 V |
| Reference Type | External, Built-in |
| SNR | 86.7 dB |
| THD | -100 dB |
| Power Consumption | 200 µA (standby) |
| 動作温度範囲 | -40°C to +125°C |
| パッケージ | 24-LFCSP (4x4 mm) |
| 実装タイプ | Surface Mount |
| RoHS | Compliant |
| 特長 | FIFO buffer, soft reset, power-on reset, simultaneous sampling |
AD7385BCPZ ピン構成
| ピン 1 | VDD — Power supply (3.0V to 3.3V) |
| ピン 2 | VIN1 — Analog input channel 1 |
| ピン 3 | VIN2 — Analog input channel 2 |
| ピン 4 | VIN3 — Analog input channel 3 |
| ピン 5 | VIN4 — Analog input channel 4 |
| ピン 6 | GND — Ground |
| ピン 7 | REF — Reference input/output |
| ピン 8 | SCLK — Serial clock input |
| ピン 9 | SDI — Serial data input |
| ピン 10 | SDO — Serial data output |
| ピン 11 | CS — Chip select (active low) |
| ピン 12 | RESET — Reset input |
主な用途
AD7385BCPZ の用途: 6 件s: Motor Control, Power Monitoring, Data Acquisition Systems, Industrial Automation, Automotive Electronics, Medical Instrumentation.
Motor Control
The AD7385BCPZ is ideal for motor control applications due to its four simultaneous sampling channels and 2 MSPS sampling rate. It enables accurate measurement of phase currents and voltages, which is critical for field-oriented control (FOC) algorithms. The high SNR of 86.7 dB ensures precise current sensing, improving torque control and efficiency. The device's SPI interface allows easy integration with microcontrollers and DSPs. Its wide operating temperature range (-40°C to +125°C) makes it suitable for industrial motor drives. The compact LFCSP package saves PCB space, and the low power consumption (200 µA standby) is beneficial for energy-efficient designs.
おすすめ
Power Monitoring
The AD7385BCPZ is well-suited for power monitoring applications, such as smart meters and power quality analyzers. Its 16-bit resolution and 2 MSPS sampling rate allow accurate measurement of AC and DC power parameters, including voltage, current, and power factor. The simultaneous sampling capability ensures that voltage and current waveforms are captured with precise phase alignment, which is essential for accurate power calculations. The device's high SNR (86.7 dB) and low THD (-100 dB) contribute to reliable measurements. The SPI interface simplifies data transfer to a host processor, and the built-in reference reduces external component count. The wide temperature range supports outdoor and industrial installations.
おすすめ
Data Acquisition Systems
The AD7385BCPZ is an excellent choice for general-purpose data acquisition systems (DAQ) that require high-speed, multi-channel analog input. Its four simultaneously sampled channels allow synchronized capture of multiple signals, which is useful for vibration analysis, structural health monitoring, and test and measurement equipment. The 16-bit resolution provides fine granularity, and the 2 MSPS sampling rate captures fast transients. The device's SPI interface supports daisy-chaining, enabling expansion to more channels with minimal wiring. The built-in FIFO buffer helps manage data flow, reducing processor overhead. The compact package and low power consumption make it suitable for portable and embedded DAQ systems.
おすすめ
Industrial Automation
In industrial automation, the AD7385BCPZ can be used in programmable logic controllers (PLCs) and process control systems to monitor analog sensors such as temperature, pressure, and flow. Its 16-bit resolution ensures precise measurement, and the 2 MSPS sampling rate allows fast response to process changes. The simultaneous sampling feature is beneficial for applications that require correlation between multiple sensor inputs. The device's wide operating temperature range and robust design make it suitable for harsh industrial environments. The SPI interface simplifies integration with industrial microcontrollers, and the low power consumption helps reduce heat generation in control cabinets.
おすすめ
Automotive Electronics
The AD7385BCPZ is suitable for automotive applications such as battery management systems (BMS) and motor drives in electric vehicles. Its 16-bit resolution and 2 MSPS sampling rate enable accurate monitoring of battery voltage and current, which is critical for state-of-charge estimation. The simultaneous sampling capability ensures that voltage and current are measured at the same instant, improving power calculation accuracy. The device's wide temperature range (-40°C to +125°C) meets automotive requirements, and the compact LFCSP package is ideal for space-constrained electronic control units (ECUs). The SPI interface allows easy communication with automotive microcontrollers.
おすすめ
Medical Instrumentation
The AD7385BCPZ can be used in medical instrumentation such as patient monitoring systems and diagnostic equipment. Its high resolution (16-bit) and low noise (SNR 86.7 dB) are essential for accurate measurement of physiological signals like ECG and EEG. The simultaneous sampling capability is useful for multi-lead ECG systems where timing alignment is critical. The device's low power consumption is beneficial for battery-powered portable medical devices. The compact package allows for miniaturization of medical devices. The SPI interface simplifies integration with medical-grade microcontrollers, and the wide temperature range ensures reliable operation in clinical environments.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: AD7385BCPZ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | AD7386-4BCPZ | AD7383-4BCPZ | AD7384-4BCPZ |
|---|---|---|---|---|
| Package | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16-bit | 16-bit | 14-bit | 12-bit |
| Sampling Rate | 2 MSPS | 2 MSPS | 2 MSPS | 2 MSPS |
| Number of Channels | 4 | 4 | 4 | 4 |
| Input Type | Single-ended | Single-ended | Single-ended | Single-ended |
| SNR | 86.7 dB | 86.7 dB | 86.7 dB | 86.7 dB |
| Supply Voltage | 3.0V to 3.3V | 3.0V to 3.3V | 3.0V to 3.3V | 3.0V to 3.3V |
主な差別化要因
- Simultaneous sampling of four channels （vs AD7386-4BCPZ)
- 16-bit resolution with high SNR （vs AD7383-4BCPZ)
- Built-in FIFO buffer （vs AD7384-4BCPZ)
設計ノート
Provide a clean, low-noise power supply to the VDD pin. Use a 10 µF ceramic capacitor in parallel with a 0.1 µF capacitor placed as close to the VDD pin as possible. This helps filter high-frequency noise and ensures stable operation of the ADC.
For optimal performance, route the analog input traces with controlled impedance and keep them away from digital signals. Use a solid ground plane under the ADC and avoid ground loops. Place the reference decoupling capacitor (10 µF) close to the REF pin to minimize noise.
Ensure that the SPI interface signals (SCLK, SDI, SDO, CS) are properly terminated and have adequate drive strength. Avoid long traces that can cause signal integrity issues at high data rates. Also, verify that the reference voltage is stable and within the specified range to maintain accuracy.
コンプライアンス情報
RoHS compliant per JLCPCB listing. AEC-Q100 qualification not specified; for automotive use, verify with manufacturer.