Single supply operational amplifier and charge pump device

Details Single supply operational amplifier and charge pump device Single supply operational amplifier and charge pump device

1993-05-25

1994-02-22

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

330297, H03F 304

Patent

active

052891372

ABSTRACT:
An integrated circuit device (10) has an operational amplifier (12) and a charge pump (14) for creating a negative voltage level -Vcc. The operational amplifier (12) preferably has various sub-components. In particular, a bias generator (36) is included and connected to a neutral voltage level (31) isolated from the negative voltage level and providing current for operational amplifier (12). An input stage (38) has inputs (16 and 18) for receiving two input signals and maintains the input signals in a balanced signal path. A conversion circuitry (40) receives the input signals and creates a single differential signal eliminating noise received in the input stage (38). An output stage prepares this single differential signal for transfer out of the operational amplifier (12).

REFERENCES:
patent: 4780625 (1988-10-01), Zobel

Affiliated with

Also associated with

Rating

Single supply operational amplifier and charge pump device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single supply operational amplifier and charge pump device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single supply operational amplifier and charge pump device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-174702