AD7388BCPZ - 12-Bit 4MSPS Dual SAR ADC | Analog Devices
MPN: AD7388BCPZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 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 |
Drop-in alternatives for AD7388BCPZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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View Datasheet →AD7388BCPZ Maximum Ratings & Electrical Characteristics
| Resolution | 12 bits |
| Number of Inputs | 4 (2 differential or 4 single-ended) |
| Number of ADCs | 2 |
| Sampling Rate | 4 MSPS per channel |
| Architecture | SAR |
| Input Type | Single-ended or differential |
| Data Interface | SPI |
| Supply Voltage | 3.0 V to 3.6 V |
| Package | 16-LFCSP (3x3 mm) |
| Operating Temperature Range | -40C to +125C |
| SNR | 72 dB |
| THD | -80 dB |
| Power Dissipation | 3 mW (power-down mode) |
| Reference Type | Internal |
| RoHS Status | Compliant |
AD7388BCPZ Pin Configuration
| Pin 1 | AVDD — Analog power supply |
| Pin 2 | VIN1+ — Positive analog input channel 1 |
| Pin 3 | VIN1- — Negative analog input channel 1 |
| Pin 4 | VIN2+ — Positive analog input channel 2 |
| Pin 5 | VIN2- — Negative analog input channel 2 |
| Pin 6 | GND — Ground |
| Pin 7 | DVDD — Digital power supply |
| Pin 8 | SCLK — Serial clock input |
| Pin 9 | SDI — Serial data input |
| Pin 10 | SDO — Serial data output |
| Pin 11 | CS — Chip select (active low) |
| Pin 12 | REF — Reference voltage input/output |
| Pin 13 | VREF — Reference voltage output |
| Pin 14 | PD — Power-down control |
| Pin 15 | VIO — Digital I/O supply |
| Pin 16 | EP — Exposed pad (ground) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD7388BCPZ is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for AD7388BCPZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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) |
Key Differentiators
- Dual simultaneous sampling (vs AD4696BCPZ)
- Higher sampling rate (vs AD4696BCPZ)
- Lower resolution (vs AD7386BCPZ)
Design Notes
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.
Compliance Information
RoHS compliant per Analog Devices product page. Other compliance data not specified in the provided data.
