AD7388BCPZ - 12-Bit 4MSPS Dual SAR ADC | Analog Devices
Артикул: AD7388BCPZ ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $6.73 | $6,73 |
| 10 | $6.2 | $62,00 |
| 100 | $5.5 | $550,00 |
| 500 | $4.9 | $2.450,00 |
| 1.000 | $4.35 | $4.350,00 |
AD7388BCPZ Обзор
An ADC (analog-to-digital converter) is an electronic component that converts continuous analog signals into discrete digital values. The AD7388BCPZ is a SAR ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed, low power consumption, and excellent accuracy, making them ideal for applications such as motor control, data acquisition, and power monitoring. The AD7388BCPZ is part of the AD7386/AD7387/AD7388 family, which includes 16-bit, 14-bit, and 12-bit versions, respectively.
Key features of the AD7388BCPZ include dual simultaneous sampling, which allows two channels to be sampled at the same time, preserving phase information between signals. The device also features a high-speed serial interface (SPI) that supports daisy-chaining, enabling multiple ADCs to be connected to a single microcontroller. The ADC includes an internal reference and reference buffer, reducing external component count. The input range is configurable, supporting both single-ended and differential inputs, with a common-mode voltage range that simplifies signal conditioning.
The AD7388BCPZ uses a charge redistribution architecture with a capacitive DAC, providing excellent linearity and low noise. The device achieves a signal-to-noise ratio (SNR) of 72 dB and a total harmonic distortion (THD) of -80 dB, ensuring high-fidelity conversion. The ADC also features a flexible power-down mode, reducing power consumption to 3 mW at lower throughput rates. The SPI interface supports multiple operating modes, including a turbo mode for maximum throughput and a reduced power mode for lower data rates.
Typical applications for the AD7388BCPZ include motor control, where simultaneous sampling of current and voltage is critical for accurate torque control; data acquisition systems, where high speed and accuracy are required; and power monitoring, where the ADC can measure multiple phases simultaneously. The device is also suitable for industrial automation, test and measurement, and medical instrumentation.
When designing with the AD7388BCPZ, it is important to provide a clean, low-noise power supply and to decouple the AVDD and DVDD pins with 0.1 uF and 10 uF capacitors. The reference pin should be bypassed with a 10 uF capacitor to ensure stable operation. The SPI interface should be kept short and properly terminated to avoid signal integrity issues at high data rates.
Аналоги без доработки для AD7388BCPZ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с AD7388BCPZ (тот же форм-фактор и посадочное место) — отличается по Package, Input Type, Resolution, Reference Type, Supply Voltage.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
AD7387BCPZ
✅ Прямая замена✓ В наличии
$5.62 / шт.
Открыть даташит →AD7386BCPZ
✅ Прямая замена✓ В наличии
$46.01 / шт.
Открыть даташит →AD4696BCPZ
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$11.75 / шт.
Открыть даташит →AD4695BCPZ
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$18.5 / шт.
Открыть даташит →AD4694BCPZ
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$8.1 / шт.
Открыть даташит →AD4693BCPZ
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$8.1 / шт.
Открыть даташит →AD4692BCPZ
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$5.9 / шт.
Открыть даташит →AD4691BCPZ
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$8 / шт.
Открыть даташит →AD7388BCPZ Максимальные параметры и электрические характеристики
| Разрешение | 12 bits |
| Number of Inputs | 4 (2 differential or 4 single-ended) |
| Number of ADCs | 2 |
| Частота дискретизации | 4 MSPS per channel |
| Architecture | SAR |
| Input Type | Single-ended or differential |
| Data Interface | SPI |
| Напряжение питания | 3.0 V to 3.6 V |
| Корпус | 16-LFCSP (3x3 mm) |
| Диапазон рабочих температур | -40C to +125C |
| SNR | 72 dB |
| THD | -80 dB |
| Power Dissipation | 3 mW (power-down mode) |
| Reference Type | Internal |
| Статус RoHS | Compliant |
Конфигурация выводов AD7388BCPZ
| Контакт 1 | AVDD — Analog power supply |
| Контакт 2 | VIN1+ — Positive analog input channel 1 |
| Контакт 3 | VIN1- — Negative analog input channel 1 |
| Контакт 4 | VIN2+ — Positive analog input channel 2 |
| Контакт 5 | VIN2- — Negative analog input channel 2 |
| Контакт 6 | GND — Ground |
| Контакт 7 | DVDD — Digital power supply |
| Контакт 8 | SCLK — Serial clock input |
| Контакт 9 | SDI — Serial data input |
| Контакт 10 | SDO — Serial data output |
| Контакт 11 | CS — Chip select (active low) |
| Контакт 12 | REF — Reference voltage input/output |
| Контакт 13 | VREF — Reference voltage output |
| Контакт 14 | PD — Power-down control |
| Контакт 15 | VIO — Digital I/O supply |
| Контакт 16 | EP — Exposed pad (ground) |
Типичное применение
AD7388BCPZ подходит для 6 применениеs: Motor Control, Data Acquisition Systems, Power Monitoring, Industrial Automation, Test and Measurement, Medical Instrumentation.
Motor Control
The AD7388BCPZ is ideal for motor control applications due to its dual simultaneous sampling capability, which allows current and voltage to be sampled at the same time. This is critical for accurate torque control and ensures that phase information is preserved. The 4 MSPS sampling rate provides fast response to changing motor conditions, enabling precise control loops. The device's low power consumption and small package make it suitable for compact motor drives. In a typical motor control system, the ADC is used to measure phase currents and DC bus voltage, with the digital outputs fed to a microcontroller or DSP for real-time processing. The high SNR of 72 dB ensures accurate current measurement, reducing torque ripple and improving efficiency.
Рекомендуется
Data Acquisition Systems
The AD7388BCPZ is well-suited for data acquisition systems that require high speed and accuracy. With a 4 MSPS sampling rate and 12-bit resolution, it can capture fast-changing signals with good fidelity. The device supports both single-ended and differential inputs, allowing it to interface with a variety of sensors. The SPI interface simplifies connection to microcontrollers and FPGAs. In a typical data acquisition system, the ADC is used to digitize analog signals from sensors, with the digital data processed and stored. The low power consumption of 3 mW in power-down mode is beneficial for battery-powered systems. The small LFCSP package saves board space, making it ideal for portable instruments.
Рекомендуется
Power Monitoring
The AD7388BCPZ is excellent for power monitoring applications, where simultaneous sampling of multiple phases is required. The dual ADC architecture allows two channels to be sampled simultaneously, preserving phase relationships between voltage and current. This is essential for accurate power calculation in three-phase systems. The device's high SNR ensures precise measurement of small signals, while the wide input range accommodates various sensor outputs. In a power monitoring system, the ADC is used to digitize voltage and current waveforms, with the data processed to compute active, reactive, and apparent power. The SPI interface enables easy integration with microcontrollers for real-time monitoring and control.
Рекомендуется
Industrial Automation
The AD7388BCPZ is suitable for industrial automation applications, such as process control and machine vision. Its high speed and accuracy enable precise measurement of analog signals from sensors and transducers. The device's wide operating temperature range (-40C to +125C) ensures reliable operation in harsh industrial environments. The small package and low power consumption make it easy to integrate into compact control modules. In a typical industrial automation system, the ADC is used to digitize signals from temperature, pressure, and flow sensors, with the data used for monitoring and control. The SPI interface allows for easy connection to PLCs and industrial controllers.
Рекомендуется
Test and Measurement
The AD7388BCPZ is ideal for test and measurement equipment, such as oscilloscopes and data loggers. Its 4 MSPS sampling rate allows it to capture high-frequency signals with good resolution. The dual simultaneous sampling capability is useful for comparing two signals, such as input and output of a device under test. The device's high SNR and low THD ensure accurate signal reproduction. In a typical test and measurement system, the ADC is used to digitize analog waveforms, with the data processed and displayed. The SPI interface enables high-speed data transfer to a host processor. The small package and low power consumption make it suitable for portable test equipment.
Рекомендуется
Medical Instrumentation
The AD7388BCPZ is suitable for medical instrumentation, such as patient monitoring and diagnostic equipment. Its high speed and accuracy enable precise measurement of physiological signals, such as ECG and EEG. The device's low power consumption is beneficial for battery-powered devices. The small package allows for compact designs, which is important for wearable and portable medical devices. In a typical medical instrumentation system, the ADC is used to digitize analog signals from sensors, with the data processed for display and analysis. The SPI interface simplifies integration with microcontrollers. The wide operating temperature range ensures reliable operation in clinical environments.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для AD7388BCPZ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | AD7387BCPZ | AD7386BCPZ | AD4696BCPZ |
|---|---|---|---|---|
| Resolution | 12 bits | 14 bits | 16 bits | 16 bits |
| Sampling Rate | 4 MSPS | 4 MSPS | 4 MSPS | 1 MSPS |
| Number of Inputs | 4 | 4 | 4 | 4 |
| Supply Voltage | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 1.8V to 3.3V |
| Package | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| SNR | 72 dB | 80 dB | 85 dB | 90 dB |
| Power Dissipation | 3 mW (power-down) | 3 mW (power-down) | 3 mW (power-down) | 2 mW (power-down) |
Ключевые отличия
- Dual simultaneous sampling (против AD4696BCPZ)
- Higher sampling rate (против AD4696BCPZ)
- Lower resolution (против AD7386BCPZ)
Заметки по проектированию
Decouple the AVDD and DVDD pins with 0.1 uF and 10 uF capacitors placed as close to the pins as possible. Use a low-noise LDO for the analog supply to minimize noise coupling into the ADC. The VIO pin should be connected to the same supply as the host interface to ensure proper logic levels.
Keep the analog input traces short and shielded to minimize noise pickup. Use a ground plane under the ADC and avoid routing digital signals near the analog inputs. The exposed pad (EP) should be soldered to the ground plane for thermal and electrical performance.
Ensure the reference pin is bypassed with a 10 uF capacitor to maintain stability. Do not exceed the absolute maximum ratings for the supply voltage. When using the SPI interface, ensure the clock frequency is within the specified range to avoid data corruption.
Информация о соответствии
RoHS compliant per Analog Devices product page. Other compliance data not specified in the provided data.