AD7380BCPZ - 16-Bit 4MSPS Dual SAR ADC | Analog Devices
MPN: AD7380BCPZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.34 | $12.34 |
| 10 | $11.28 | $112.80 |
| 100 | $9.87 | $987.00 |
| 500 | $8.65 | $4,325.00 |
| 1,000 | $7.89 | $7,890.00 |
AD7380BCPZ Overview
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 speed, low power consumption, and excellent accuracy, making it ideal for applications such as motor control, power monitoring, and data acquisition systems. The AD7380 is part of a pin-compatible family that includes the 14-bit AD7381, allowing designers to easily scale resolution without redesigning the PCB.
Key features of the AD7380 include dual simultaneous sampling, which allows two channels to be sampled at exactly the same instant, critical for applications like three-phase power monitoring where phase alignment is essential. The device also offers a wide input common-mode range, simplifying interface to sensors and amplifiers. The internal reference buffer eliminates the need for external reference circuitry, reducing component count and board space. The SPI-compatible serial interface enables easy connection to microcontrollers and DSPs.
The AD7380 uses a standard SAR architecture with a capacitive DAC, providing excellent linearity and low noise. The device includes a track-and-hold circuit that captures the analog input at the moment of conversion, ensuring accurate sampling. The conversion process is controlled by standard control inputs, allowing simple interfacing to microprocessors or digital signal processors (DSPs). The device also features a power-down mode to reduce power consumption when not converting.
Typical applications for the AD7380 include motor control, where simultaneous sampling of phase currents is essential for accurate torque control; power monitoring, where voltage and current must be sampled simultaneously for accurate power calculation; and data acquisition systems, where high speed and precision are required. The device is also suitable for industrial automation, instrumentation, and medical equipment.
When designing with the AD7380, ensure that the reference voltage is stable and well-decoupled, as it directly affects conversion accuracy. The differential inputs should be driven with a low-impedance source to avoid settling time errors. The SPI interface should be kept short and properly terminated to avoid signal integrity issues at high throughput rates.
Drop-in alternatives for AD7380BCPZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AD7380BCPZ (same form factor and footprint) — differing in Input Type, Resolution, Interface, Supply Voltage, Number of Inputs.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7380BCPZ-RL
✅ Drop-In📋 Reference alternative (not in catalog)
AD7381BCPZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$8.1 / Unit
View Datasheet →AD7380-4BCPZ
⚡ Same Package📋 Reference alternative (not in catalog)
AD4696BCPZ
⚡ Same Package ⚠️ Specs Unverified✓ In Stock
$11.75 / Unit
View Datasheet →AD7380BCPZ Maximum Ratings & Electrical Characteristics
| Resolution | 16 bits |
| Number of Inputs | 2 |
| Input Type | Differential |
| Sampling Rate | 4 MSPS |
| Architecture | SAR |
| Supply Voltage | 3.0 V to 3.6 V |
| Internal Reference | 2.5 V buffered |
| External Reference Range | Up to 3.3 V |
| Package | 16-LFCSP (3x3 mm) |
| Interface | SPI-compatible |
| Mounting Type | Surface Mount |
AD7380BCPZ Pin Configuration
| Pin 1 | VDD — Power supply |
| Pin 2 | VIN1+ — Positive differential input channel 1 |
| Pin 3 | VIN1- — Negative differential input channel 1 |
| Pin 4 | GND — Ground |
| Pin 5 | VIN2+ — Positive differential input channel 2 |
| Pin 6 | VIN2- — Negative differential input channel 2 |
| Pin 7 | GND — Ground |
| Pin 8 | VREF — Reference voltage input/output |
| Pin 9 | GND — Ground |
| Pin 10 | SCLK — Serial clock input |
| Pin 11 | SDI — Serial data input |
| Pin 12 | SDO — Serial data output |
| Pin 13 | CS — Chip select |
| Pin 14 | GND — Ground |
| Pin 15 | VIO — I/O supply voltage |
| Pin 16 | VDD — Power supply |
Typical Applications
AD7380BCPZ is suitable for 6 applications: Motor Control, Power Monitoring, Data Acquisition Systems, Industrial Automation, Medical Instrumentation, Test and Measurement.
Motor Control
The AD7380BCPZ is ideal for motor control applications due to its dual simultaneous sampling capability, which allows precise measurement of phase currents at the same instant. This is critical for accurate torque control in AC and DC motor drives. The 4 MSPS sampling rate and 16-bit resolution provide the speed and accuracy needed for high-performance motor control loops. The differential inputs reject common-mode noise, ensuring clean current sensing signals. The device operates from a 3.3 V supply, making it compatible with modern motor control DSPs and MCUs. Its small LFCSP package saves board space in compact drives.
Recommended
Power Monitoring
In power monitoring systems, the AD7380BCPZ enables simultaneous sampling of voltage and current channels, which is essential for accurate power calculation. The dual ADC architecture ensures that voltage and current are sampled at the same instant, eliminating phase errors. The 16-bit resolution provides high accuracy for energy metering and power quality analysis. The wide common-mode input range allows direct connection to voltage and current sensors. The SPI interface simplifies data transfer to a host processor. The device's low power consumption is beneficial for always-on monitoring applications.
Recommended
Data Acquisition Systems
The AD7380BCPZ is well-suited for high-speed data acquisition systems (DAQ) that require simultaneous sampling of multiple channels. Its 4 MSPS throughput and 16-bit resolution make it ideal for capturing fast transient signals. The differential inputs provide good common-mode rejection, reducing noise in industrial environments. The internal reference simplifies design, while the SPI interface allows easy integration with FPGAs and microcontrollers. The compact LFCSP package is perfect for multi-channel DAQ cards where space is at a premium. The device's low power dissipation helps manage thermal budgets in dense systems.
Recommended
Industrial Automation
In industrial automation, the AD7380BCPZ provides precise analog-to-digital conversion for process control, condition monitoring, and robotics. Its dual simultaneous sampling is useful for applications like vibration analysis where multiple sensors must be sampled in sync. The 16-bit resolution ensures high accuracy for measurement and control loops. The device operates over a wide temperature range, making it suitable for harsh industrial environments. The SPI interface is compatible with common industrial microcontrollers. The small package allows for dense PCB layouts in control modules.
Recommended
Medical Instrumentation
The AD7380BCPZ is suitable for medical instrumentation such as patient monitoring and diagnostic equipment. Its high resolution and low noise are essential for accurate biomedical signal acquisition. The dual simultaneous sampling can be used for applications like ECG where multiple leads are sampled simultaneously. The low power consumption is beneficial for battery-powered portable devices. The small package is ideal for compact medical devices. The device's SPI interface allows easy integration with medical-grade microcontrollers. The wide common-mode input range helps reject interference from the human body.
Recommended
Test and Measurement
The AD7380BCPZ is used in test and measurement equipment such as oscilloscopes, spectrum analyzers, and data loggers. Its high sampling rate and 16-bit resolution enable accurate capture of fast signals. The dual simultaneous sampling is useful for comparing two signals in time. The differential inputs provide good common-mode rejection, reducing measurement errors. The internal reference simplifies calibration. The SPI interface allows high-speed data transfer to the processing unit. The compact package is suitable for portable test instruments.
Recommended
Recommended Products Summary
Engineering reference data for AD7380BCPZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7380BCPZ-RL | AD7381BCPZ | AD7380-4BCPZ |
|---|---|---|---|---|
| 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 |
| Resolution | 16 bits | 16 bits | 14 bits | 16 bits |
| Sampling Rate | 4 MSPS | 4 MSPS | 5 MSPS | 4 MSPS |
| Number of Inputs | 2 | 2 | 2 | 4 |
| Input Type | Differential | Differential | Differential | Differential |
| Internal Reference | 2.5 V buffered | 2.5 V buffered | 2.5 V buffered | 2.5 V buffered |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
Key Differentiators
- Dual simultaneous sampling (vs AD7980BCPZ)
- Higher sampling rate (vs AD4696BCPZ)
- Internal reference buffer (vs AD7980BCPZ)
Design Notes
Decouple the VDD and VIO pins with 0.1 uF and 10 uF capacitors placed as close to the pins as possible. The VIO pin should be connected to the same supply as the host interface to ensure proper logic levels. Use a low-noise LDO for the analog supply to minimize noise coupling into the ADC.
For optimal performance, use a solid ground plane under the ADC and route the differential input traces symmetrically. Keep the SPI lines short and avoid routing them near high-speed digital signals. The exposed pad on the LFCSP package should be soldered to the ground plane for thermal and electrical performance.
Ensure the reference voltage is stable and well-decoupled. A noisy reference will directly degrade the ADC's accuracy. Also, the differential inputs should be driven with a low-impedance source to avoid settling time errors. Avoid exceeding the absolute maximum ratings on any pin.
Compliance Information
RoHS compliance is indicated by the 'Z' suffix in the part number. Other compliance details not specified in the provided data.