フロンティア・テクノロジー Product Lineup

We introduce a design case of Frontier Technology: "A/D Converter Circuit." The sample and hold circuit charges the analog input voltage to a capacitor at a constant interval and performs a successive comparison based on charge redistribution (comparing with the output voltage from the D/A converter). The comparison results are output as digital codes. This is suitable for applications such as mobile devices that require battery operation and has a track record of being implemented in low-power sensor ICs. 【Layout Design Points】 - The capacitor array section should use a common centroid arrangement to minimize variation. - Care should be taken in wiring to ensure that the parasitic capacitance considers the weighting of each capacitor group. - Dummy capacitors are placed around the periphery of the capacitor array as a measure to prevent capacitance value errors due to etching, stabilizing the capacitance value of one unit. *For more details, please refer to the PDF document or feel free to contact us.

• Other semiconductors

We would like to introduce a design case of Frontier Technology: "Power Supply Voltage Detection Circuit." This circuit detects a drop in power supply voltage and outputs the detection result when the power supply voltage falls below a set comparison voltage. It is suitable for applications such as mobile devices that require battery operation and has a track record of being implemented in low-power microcontrollers. 【Layout Design Points】 - Arrange and route the differential pair of the comparator considering the direction of current and surrounding patterns. - Place dummy resistors around the voltage divider resistors as a measure to prevent resistance value errors due to etching, ensuring the stabilization of the resistance value of one unit. *For more details, please refer to the PDF document or feel free to contact us.

• Other semiconductors

We would like to introduce a design case of Frontier Technology: "Oscillator Circuit." By using an external crystal oscillator, it operates at a frequency of 32.768 kHz. The oscillation frequency can be adjusted through digital control, and the power supply voltage is provided by a constant voltage generation circuit. It has a proven track record of being implemented in low-power microcontrollers and is suitable for low-power RTC applications. 【Layout Design Points】 - Pay attention to crosstalk when wiring gate/drain signals with other signals. - Prohibit parallel and crossing of signals that are in opposite phases. *For more details, please refer to the PDF document or feel free to contact us.

• Other semiconductors

We would like to introduce a design case of Frontier Technology: "Constant Voltage Generation Circuit." This circuit generates a constant voltage specifically for the oscillation circuit from the power supply voltage. The current source for the amplifier is supplied from the reference generation circuit. It can be used as a constant voltage power supply for the oscillation circuit and has a proven track record of being implemented in low-power microcontrollers. 【Layout Design Points】 - The differential pair of the amplifier should be arranged at a common centroid. - To improve current accuracy, the tail current source of the amplifier should be created in the same shape and orientation as the N-channel bias transistor of the reference generation circuit. *For more details, please refer to the PDF document or feel free to contact us.

• Other semiconductors

We provide circuit design services. As a design example, we have experience in designing a "reference generation circuit" that uses a depletion-type N-channel transistor as a reference current source, which starts operation simultaneously with power supply activation, and generates a reference voltage through a bias transistor. 【Other design examples】 ■ Voltage regulation circuit ■ Oscillator circuit ■ Power supply voltage detection circuit ■ A/D converter circuit *For more details, please download the PDF or feel free to contact us.

• Circuit board design and manufacturing
• Embedded system design service
• Other contract services