Silicon Internet of Things Technology Co., Ltd (SIT) has "extremely low noise sensor signal processing technology" and "high precision sigma delta technology". It takes "core" to make special chips for the national demand as its own duty, and makes related chip technology research around the Internet of things such as smart grid. It has successfully developed a new generation of intelligent lightning resistant RS485 chip, can interface chip, RTC chip and OFDM communication chip Chip, MEMS signal processing chip, etc. Around these core technologies, the company has applied for more than ten national intellectual property rights and initially established its own patent protection system. Core power has 7 invention patents, 7 integrated circuit layout protection and 10 invention patents.

Seven invention patents have been authorized

1. A power on reset circuit with global enable pulse control automatic reset function, patent number: zl201310027886.4

2. Low power crystal oscillator circuit, patent No.: zl201310034695.0

3. A low power consumption crystal oscillator shaping circuit, patent number: zl201310434008.4

4. A multiphase non overlapping clock circuit, patent No.: 201310027759.4

5. An over temperature protection circuit with thermal hysteresis function, patent No.: 2016106463148

6. A reference current source circuit for compensating temperature drift coefficient of resistance, patent No.: 201310214945.9

7. A low temperature drift bandgap voltage reference based on VBE linearization, patent No.: 201510002900.4

Ten invention patents have been accepted

1. A switched capacitor integrator with chopper, application No.: 201610914595.0

2. A full differential amplifier with high precision and high dynamic range, application No.: 201610897245.8

3. A power on reset circuit with low power consumption and small size, application No.: 201610897156.3

4. A compensation filter for cascaded integrator comb filter, application No.: 201710133907.9

5. A successive approximation ADC and its switching method, application No.: 201711450254.3

6. A circuit to prevent leakage after chip power failure, application No.: 201711448593.8

7. A buffer circuit of successive approximation ADC, application No.: 201310208133.3

8. A high stability and low power on chip OSC circuit, application number: 2017101109753

9. A port protection circuit to prevent reverse leakage, application No.: 2017102293335

10. Hysteresis comparator applied to RS-485 receiver, application No.: 201610140026.5

7 authorized integrated circuit layout registration certificates

1. Signal processing circuit of MEMS microphone sensor, Registration No.: bs.13500095.5

2. MEMS microphone interface circuit chip, registration number: bs.15501072.7

3. RS485 interface chip integrated with TVs, registration number: bs.16500355.3

4. Can transceiver chip, registration number: bs.175012075

5. A RS485 interface chip circuit, registration number: bs.165512040

6. Anti lightning surge RS485 interface chip, registration number: 165518103

7. Low voltage high speed RS485 interface chip, registration number: 175538158