DC-DC Buck Converter Using Analog Coarse-Fine Self-Tracking Zero-Current Detection Scheme
This paper proposes a DC-DC buck converter using an analog coarse-fine self-tracking zero-current detection (AST-ZCD) scheme. The AST-ZCD detects the zero-current by measuring the voltage level across a freewheeling transistor. It adjusts the nMOS turn-off time using an amplifier, capacitors, and current sources instea..
Area-Efficient Bidirectional Shift-Register Using Bidirectional Pulsed-Latches
The proposed bidirectional shift-register reduces the area and power consumption by replacing master-slave flip-flops and 2-to-1 multiplexers with the proposed bidirectional pulsed-latches and non-overlap delayed pulsed clock signals, and by using sub shift-registers and extra temporary storage latches.
High Resolution Analog-Digital Converter for Gas Sensor Interface
This discrete-time 3rd order delta-sigma analog-digital converter is supplied by 3.2V, and shows 16bit resolution. The measured effective number of bits(ENOB) is 13.2bit. The sampling rate is 500KS/s High SNDR is achieved by delta-sigma modulation, and this chip is based on TSMC 0.18um BCDMOS process.
Die size is 1.17..
Trans-impedance Amplifier for Gas Sensor Analog Front-end
Transimpedance Ampllifier(TIA) amplifies current to voltage. Nested chopper technique, Weak Inversion design aloow low noise, low offset structure. In low frequency, the signal can be amplified in different ranges. TIA circuit is implemented in tsmcTM 0.18nm BCMMOS technology. Chip size is 1.175mm x 1.175mm.
This IP is a precision analog output CMOS integrated-circuit temperature sensor that operates over ？45°C to 85°C. The power supply operating range is 2.4 V to 3.3 V. The transfer function of IP is predominately linear. The temperature error increases linearly and reaches a maximum of ±2.0°C at the temperature ran..