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Digital-to-analog converters (DACs) provide accurate output voltages for actuation and control in many electronic applications such as industrial, medical, and RF systems. The MAX5715 is a highly accurate, four-channel, 12-bit voltage output DAC. Development with DACs involves expertise in analog systems, power supplies, digital interfaces, and firmware. Now, the MAX5715 module is introduced to accelerate the development process. This module helps for rapid prototyping and development with the MAX5715 (a 12-bit, 4-channel, voltage-output DAC). DAC module interfaces to any Arduino-compatible or embed-compatible platform system with expansion ports configurable for SPI communication. The board directly interfaces to SPI with logic levels in the range of 2.7V to 5.5V.
C101
Digital-to-analog converters (DACs) provide accurate output voltages for actuation and control in many electronic applications such as industrial, medical, and RF systems. The MAX5715 is a highly accurate, four-channel, 12-bit voltage output DAC. Development with DACs involves expertise in analog systems, power supplies, digital interfaces, and firmware. Now, the MAX5715 module is introduced to accelerate the development process. This module helps for rapid prototyping and development with the MAX5715 (a 12-bit, 4-channel, voltage-output DAC). DAC module interfaces to any Arduino-compatible or embed-compatible platform system with expansion ports configurable for SPI communication. The board directly interfaces to SPI with logic levels in the range of 2.7V to 5.5V.
The MAX5715 4-channel, low-power, 12-bit, voltage-output digital-to-analog converter (DACs) includes output buffers and an internal reference that is selectable to be 2.048V, 2.500V, or 4.096V. The MAX5715 accepts a wide supply voltage range of 2.7V to 5.5V with extremely low power (3mW) consumption to accommodate most low-voltage applications. A precision external reference input allows rail-to-rail operation and presents a 100kΩ (typ) load to an external reference.
The MAX5715 has a 50MHz 3-wire SPI/QSPI™/MICROWIRE®/DSP-compatible serial interface that also includes an active-low RDY output for daisy-chain applications. The DAC output is buffered and has a low supply current of less than 250µA per channel and a low offset error of ±0.5mV (typ). On power-up, the MAX5715 reset the DAC outputs to zero, providing additional safety for applications that drive valves or other transducers that need to be off on power-up. The internal reference is initially powered down to allow the use of an external reference. The MAX5715 allows simultaneous output updates using software LOAD commands or the hardware load DAC logic input (active-low LDAC). A clear logic input (active-low CLR) allows the contents of the CODE and the DAC registers to be cleared asynchronously and sets the DAC outputs to zero.
The project presented here uses the MAX5541 chip, a serial-input, voltage-output, 16-bit monotonic digital-to-analog converter (DAC) that operates from a single +5Vdc supply. Notably, the DAC output is unbuffered, resulting in a low supply current of 0.3mA and a minimal offset error of 1 LSB. The DAC output range spans from 0V to VREF, providing a wide range of voltage output options.
C103
This board created for makers, who want to use various Arduino UNO shields with PIC micro-controllers from Microchip. Board facilitates the use of any 28 PIN DIP PIC microcontroller with or without crystal. Omit Y1 , C9 and C10 in case of internal oscillator . Project can also be used to develop RS485 applications with the help of on board SN75176 IC. Two regulators provide 3.3V and 5V DC outputs. ICSP connector provided to program the PIC IC using PICKIT2/PICKIT3 programmer. On board DC jack connector and additional CN2 Header connector helps to power up the board. Input supply 7V-15V DC. This board has been tested using PIC16F886 IC. The board also supports PIC18F2331 and PIC18F2431 PICs mainly used for motor applications. Solder R9 and C8 if Motor PICs are used or left open for normal microcontrollers. Switch 1 helps to reset the board. Refer to PCB top layout for Arduino to Microchip Pin configuration.
C102
The project described here is a Quad-channel digital isolator with 5000VRMS isolation ratings per UL 1577. The board has three forward and one reverse-direction channel which makes this project ideal for isolated SPI interface between microcontroller and subnode unit. The circuit provides isolation between the main SPI unit (microcontroller) and the SPI slave. It has high electromagnetic immunity, reduces noise, and high voltage traveling to the main unit. All the outputs are normally high, use ENABLE pins to disable the outputs. Connecting Enable 1 and Enable 2 pins to GND respective sides puts all outputs LOW and all outputs are disabled. If the input power or signal is lost then the output goes high. Level translation range: 2.25V to 5.5V.
C105
Optically isolator Arduino Shield has been designed to provide optically isolated I2C communication between Arduino and any other device or sensors that works with I2C protocols. I have used the ISO1540 Low-Power Bidirectional I2C Isolator IC from Texas Instruments to build this project, and the device is compatible with I2C interfaces. These devices have logic input and output buffers that are separated by Texas Instruments Capacitive Isolation technology using a silicon dioxide (SiO2) barrier. When used with isolated power supplies, these devices block high voltages, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging the Arduino board. The ISO1540 has two isolated bidirectional channels for clock and data lines. The project is suitable for multi-master applications. For applications where clock stretching by the slave is possible. LED D1 is the power indicator for side two. This board requires two separate supplies, side one powered from Arduino UNO 5V, side 2 require separate 3.3V to 5V.
C106
The project presented here is a USB port-powered, USB 2.0 isolator that isolates the USB host and USB device. It is a galvanically-isolated USB2.0 repeater, that supports low speed 1.5Mbps, and full speed 12Mbps communication. The project automatically connects and detects the bus speed. This USB 2.0 isolator is efficiently powered from the USB port and requires no external power, on board isolated DC-DC converter U1 provides 5V to the other side of the circuitry and USB port. U2 LDO provides 3.3V to the chip. L1 and L2 ferrite beads take care of noise immunity on the DC bus. The project protects the host USB port from noise and high voltage.
C107
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