Patent ID: 8067287

Claim:
A method of forming an analog device of a semiconductor device, the method comprising: depositing a gate dielectric layer over a semiconductor body; depositing a gate material layer over the gate dielectric; patterning the gate material layer to form a first gate and a first channel underneath the first gate, a second gate and a second channel underneath the second gate, wherein the first channel comprises a first length and a first width, and the second channel comprises a second length and a second width; implanting source/drain dopants and halo dopants to form a first transistor and a second transistor, wherein the first transistor comprises a first source, a first drain, the first source and drain being separated by the first channel, wherein the second transistor comprises a second source, a second drain, the second source and drain being separated by the second channel, wherein the first drain and the second source shared a common region, and wherein a threshold voltage of the first transistor is higher than a threshold voltage of the second transistor; and electrically coupling the first gate to the second gate, wherein the semiconductor comprises the analog device and a plurality of digital devices, wherein the analog device comprises an asymmetric segmented transistor having the first and the second transistors, and wherein the gate dielectric layer, the first source, the first drain. and the common region of the asymmetric segmented transistor are identical to at least one of the digital devices.