Circuits & Schematics Interfaces

The best way to make midrange, low- to medium-accuracy temperature measurements (considering size, cost, performance, and ease of use) is to use an IC temperature sensor. But most IC temperature sensors are designed for applications where the ...

Perhaps the most effective way to gain board space and increase component density is to minimize wiring on the board. A widely used architecture that allows such miniaturization is the I 2 C bus. Comprising only a bidirectional data line, SDA, and ...

Digital-system designs require you to consider many core voltages. Memory operates at 1.8 V, I 2 C and FPGA devices operate at 3.3 V, microcontrollers operate at 5 V, and charge-coupled-device image sensors operate at 9 to 8 V. Clocks for each ...

The design in Figure 1 is a visible optical link for those who need to see the transmitted data. An isolation figure of more than 5000 V is a bonus. Tests of the system used the COM input of a data-acquisition system, as well as a standard PC's ...

The circuit in Figure 1 derives its power from a USB port and produces 5 and 3.3 V supply rails for portable devices, such as digital cameras, MP3 players, and PDAs. The circuit allows the port to maintain communications while, for example, ...

Rajkumar Sharma Electronics-Lab This module is an isolated full-duplex differential line driver and receiver for TIA/EIA RS485/RS422 applications (Figure 1). The module is ideal for long transmission lines because the ground loop is broken to allow ...

Converting band-limited NRZ (non-return-to-zero) data to a digital format suitable for microprocessors and other digital systems poses problems when a signal's duty cycle or amplitude varies or when its average level unpredictably wanders ...

Soumitra Bhattacharjee EDN In PIC microcontrollers, the MSSP (master synchronous serial port) module uses multiplexed pins for the I 2 C and SPI peripherals. There is typically no issue using either of the two peripherals. But what if both ...

Dan Christman, Maxim Integrated Products EDN RS-232 communications with one µC and more than one remote system can be problematic, because most µCs contain only one UART, which provides an interface between synchronous and asynchronous ...

W. Stephen Woodward EDN Galvanically (that is, optically or electromagnetically) isolated 4- to 20-mA current loops offer robust noise immunity and tolerate long cable runs. These advantages, combined with simple unshielded two-wire cabling, make ...