Title :
A 12-bit, 1-MHz, two-step flash ADC
Author :
Kerth, Donald A. ; Sooch, Navdeep S. ; Swanson, Eric J.
Author_Institution :
Crystal Semicond. Corp., Austin, TX, USA
fDate :
4/1/1989 12:00:00 AM
Abstract :
A monolithic 12-b 1 MHz, two-step flash analog-to-digital converter (ADC) has been implemented in standard 3- mu m CMOS technology. A 12-b accurate reference bank incorporating a switched-capacitor integrator and a bank of 66 sample-and-hold amplifiers is discussed. Self-calibration techniques are used to correct for the converter offset, gain, and nonlinearity errors. The converter differential nonlinearity errors below 1/2 LSB and the S/(N+D) signal to noise is 70 dB for 100-kHz analog input.<>
Keywords :
CMOS integrated circuits; analogue-digital conversion; sample and hold circuits; switched capacitor networks; 1 MHz; 3 micron; 70 dB; CMOS; accurate reference bank; analog-to-digital converter; converter differential nonlinearity errors; sample-and-hold amplifiers; signal to noise; switched-capacitor integrator; two-step flash ADC; Analog-digital conversion; CMOS technology; Circuits; Digital signal processing; Error correction; Power dissipation; Resistors; Throughput; Voltage;
Journal_Title :
Solid-State Circuits, IEEE Journal of
