Schematic Designs

Typically, a voltage supervisor is used to monitor the supply voltage in embedded circuits and microcontroller systems for abnormal voltage conditions. In the case an abnormal condition is detected, the supervisory circuit resets the controller and keeps it in that state as long as that condition...

The Sparkfun Blynk board is an evaluation board for a low cost Wi-Fi chip ESP8266 that can connect to Wi-Fi networks that are either open or protected with WPA, WPA-2, or WEP authentication. This board has a mobile app that enables users to observe weather conditions, control LEDs from a phone, s...

In the fields of health and medical monitoring, wearable devices offer a promising solution nowadays. Heart rate tells a lot of information regarding the heart function and health of a person during both activity and rest. There are many innovations of semiconductors and integrated circuits that ...

This reference design is a typical application of LT6657 precision voltage reference IC of Linear Technology for precision measurements. It is used to produce a low noise precision 20-Bit Analog-to-Digital Converter (ADC) that offers unmatched noise performance (SINAD, SNR and SFDR), low power co...

Analog-to-Digital Converters are devices that convert analog signal to digital signal. These devices come in different resolutions and performance to fit various applications. This circuit is an evaluation board that helps users to assess the ADC121C021s’ performance. The ADC121C021 is a 12-bit A...

This design is an application of Texas Instruments’ DRV8880 stepper motor driver, an integrated motor driver solution for bipolar stepper motors. The device integrates two N-channel power MOSFET H-bridges, current regulation circuitry, and a microstepping indexer. The circuit design showcases how...

When signals from the USB travel across a PCB or a cable, signal integrity degrades due to loss and Inter-Symbol Interference (ISI). Due to these problems, it is necessary to use a linear redriver or a linear equalizer. The linear redriver compensates for the channel loss, and hence, extends the ...

Brushless motors, which are also known as BLDC, are synchronous motors, which means that the magnetic field generated by the stator and the magnetic field generated by the rotor rotate at the same frequency. The reference design is an evaluation board for DRV8305 gate driver IC for three phase mo...

Brushless motors, which are also known as BLDC, are synchronous motors, which means that the magnetic field generated by the stator and the magnetic field generated by the rotor rotate at the same frequency. The reference design is an evaluation board for DRV8305 gate driver IC for three phase mo...

This reference design features a stereo audio active crossover that can be used for small sound system. Audio crossovers use active filters made up of resistors, capacitors, and operational amplifiers to split the frequency components of an audio signal. In this design, the circuit uses the TLV23...

Signal compression is considered to be a valuable signal shaping effect used in the audio industry. This compression effect functions by reducing the dynamic range of the input signal. It basically attenuates the louder signals while boosting the weak ones. Compression helps your signal to be mor...

The magnetic linear encoders is a position sensing device that uses hall effect elements like a multi-pole magnetic strip or ring to convert the encoded position into an analog signal or digital signal. The AS5311 is a high-resolution contactless magnetic linear encoder for accurate linear motion...

This reference design is a synchronous step-down converter with full differential sense. It uses the TPS548D22 of Texas Instruments, which is a compact single buck converter that is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count and...

Front-end modules are built-in modules integrated with different functional components. Front-end modules are designed with cost and space saving considerations. It combines of power amplifier (PA), low noise amplifiers (LNA), and switch functions into single low-cost, laminate-based, multichip m...

The ATTiny85-20PU is an 8-bit microcontroller with an 8KB of program memory. It has six general-purpose input-output pins that can also be programmed to act as ADC pins, PWM pins, SPI port, or I2C port. The ATTiny85-20PU has 512 bytes of EEPROM that can be used to store data that are rarely chang...

Circuit breakers, relays and other devices, which protect a whole circuit from drawing excessive current that can damage electronic device are categorize as overcurrent protection devices. These protective devices use electromechanical solenoids for their operation. Solenoid coils are rated to op...

This reference design features a low voltage motor driver STSPIN220, which is designed for driving stepper motors. The STSPIN220 is a bipolar stepper motor driver. It combines control logic and a low drain to source resistance H-bridge power stage in a small QFN 3x3 package. The device can operat...