Overview
The ADuM3150BRSZ is a 6-channel SPIsolator digital isolator produced by Analog Devices Inc. This device is optimized for isolated serial peripheral interfaces (SPIs) and is based on Analog Devices' iCoupler chip scale transformer technology. It supports SPI clock rates of up to 17 MHz and provides low propagation delay and jitter, making it suitable for high-speed SPI applications.
The ADuM3150BRSZ includes two additional independent low data rate isolation channels, each operating at a 250 kbps data rate with up to 2.5 µs of jitter. The device also features a delay clock output on the master side, enabling support for 40 MHz clock performance.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| SPI Clock Rate | SPIMCLK | 10 | 17 | - | MHz | A Grade and B Grade |
| Data Rate (Fast Channels) | DRFAST | 40 | 40 | - | Mbps | Within PWD limit |
| Propagation Delay | tPHL, tPLH | 12 | 14 | 25 | ns | 50% input to 50% output |
| Pulse Width | PW | 12.5 | 12.5 | - | ns | Within PWD limit |
| Pulse Width Distortion | PWD | 2 | 2 | - | ns | |
| Supply Current (1 MHz, A Grade) | IDD1 | 5 | 8.5 | - | mA | CL = 0 pF, DRFAST = 1 MHz, DRSLOW = 0 MHz |
| Supply Current (1 MHz, A Grade) | IDD2 | 6.5 | 11 | - | mA | CL = 0 pF, DRFAST = 1 MHz, DRSLOW = 0 MHz |
| Rated Dielectric Insulation Voltage | - | - | 3750 | - | V rms | 1-minute duration |
| Minimum External Air Gap (Clearance) | L(I01) | - | - | 5.1 | mm | Measured from input terminals to output terminals, shortest distance through air |
Key Features
- Supports SPI clock rates up to 17 MHz and data rates up to 40 Mbps.
- Low propagation delay of 14 ns and jitter of 1 ns for fast channels.
- Two additional independent low data rate isolation channels with a 250 kbps data rate and up to 2.5 µs of jitter.
- Delay clock output on the master side for 40 MHz clock performance.
- Based on iCoupler chip scale transformer technology for high isolation and low power consumption.
- Compliant with JEDEC standard 20-lead SSOP package.
- Support for signal distribution, loopback, and loads referenced to VDDx or GNDx, as well as optimal bypass capacitance).
- Compatibility with Tektronix active probes and provision for cable terminations and edge-mounted SMA connectors).
Applications
- Isolated serial peripheral interfaces (SPIs) in industrial, medical, and automotive systems.
- Data acquisition and control systems requiring high-speed and isolated SPI communication).
- Medical devices and equipment that demand high isolation and low noise).
- Automotive systems where robust and reliable isolated communication is necessary).
- Any application requiring high-speed data transfer with electrical isolation between the master and slave sides of the SPI interface).
Q & A
- What is the maximum SPI clock rate supported by the ADuM3150BRSZ?
The ADuM3150BRSZ supports SPI clock rates up to 17 MHz).
- What is the propagation delay and jitter for the fast channels of the ADuM3150BRSZ?
The propagation delay is 14 ns, and the jitter is 1 ns for the fast channels).
- Does the ADuM3150BRSZ have any additional low data rate isolation channels?
Yes, it includes two additional independent low data rate isolation channels, each operating at a 250 kbps data rate with up to 2.5 µs of jitter).
- What is the rated dielectric insulation voltage of the ADuM3150BRSZ?
The rated dielectric insulation voltage is 3750 V rms for a 1-minute duration).
- What package type does the ADuM3150BRSZ come in?
The ADuM3150BRSZ comes in a JEDEC standard 20-lead SSOP package).
- Is the ADuM3150BRSZ compatible with Tektronix active probes?
Yes, the evaluation board for the ADuM3150BRSZ includes 200 mil header positions for compatibility with Tektronix active probes).
- What are the typical supply currents for the ADuM3150BRSZ at 1 MHz operation?
The typical supply currents are 8.5 mA for IDD1 and 11 mA for IDD2 at 1 MHz operation).
- Can the ADuM3150BRSZ be used in high-speed applications requiring ultralow emissions?
Yes, but for very high speed operation or when ultralow emissions are required, additional board layout techniques from the AN-1109 Application Note should be referred to).
- What are the minimum external air gap and tracking distances for the ADuM3150BRSZ?
The minimum external air gap and tracking distances are both 5.1 mm).
- Is the ADuM3150BRSZ suitable for use in medical devices?
Yes, the ADuM3150BRSZ is suitable for use in medical devices due to its high isolation and low noise characteristics).
