Trans-impedance Amplifier for Gas Sensor Analog Front-end
Transimpedance Ampllifier(TIA) amplifies current to voltage. Nested chopper technique, Weak Inversion design allow low noise, low offset structure.
There are four blocks in TIA. First, by using chopping technique, flicker noise and dc offset is removed with modulation and demodulation of signal. In this case, the
Bias Current Generator
Bias current generator
- output current range 1: 100nA ~ 1uA
- output current range 2 : 10uA ~ 500uA
- supply voltage : 3.3V
- 7-bit digital trimming
- low temperature drift : 10ppm (degree C)
Bus failure detector in FlexRay transceiver
The designed IP is the Bus failure detector in FlexRay transceiver. The designed IP consists of bias current circuit, 2 MOS capacitors, rail-to-rail comparator and XOR gate. Total bias current is 100uA and operation up to supply voltages of 3.3V. The bus failure detector circuit detects an error signal when the BP and ..
Differential Auto-zeroing Readout RX Sensing Circuit for large Touch Screen Panel
This readout circuit is proposed to support the new sine wave deriver architecture for large touch screen panel (TSP), (44x78) lines, which invented by MSIS lab, chungbuk national university.
-supply voltage : 3.3V
- Area: 372 um x 136.6 um
-die out : Dec/2015
-package out, PCB : Jan/2016
-each block test : unti..
Drive Amp with Sample and Hold circuit
In this architecture, we propose the Drive amp with sample and hold circuit for offset compensation. In conventional architecture used only sample and hold circuit, we implemented the offset compensation mode in the Drive amp with sample and hold ciruit.
Whole sampling clock of TX lines are 113MHz and TX IN is conn..