Circuit for controlling a linear-in-decibels attenuator...

Details Circuit for controlling a linear-in-decibels attenuator... Circuit for controlling a linear-in-decibels attenuator...

2007-08-07

2007-08-07

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Attenuators

C330S254000, C327S308000

Reexamination Certificate

active

11230813

ABSTRACT:
A circuit for a digitally operating linear-in-decibels attenuator circuit controlled using an analog control signal. The attenuator circuit includes a resistor ladder, digitally controlled switches, and a flash analog-to-digital converter. The resistive ladder includes resistances coupled in series between an input and output electrode. The resistive ladder also includes shunt resistances, each of which is coupled to a corresponding series resistance and to a corresponding digitally controlled switch that is controlled by a corresponding digital control signal. Each of the switches include a pole electrode coupled to a corresponding shunt resistance and to the input electrode, and a throw electrode coupled to the corresponding shunt resistance and to the common node for attenuating voltage from an input signal. The flash analog-to-digital converter is controlled by an analog control signal and outputs digital control signals in a thermometer code for controlling the digitally controlled switches.

REFERENCES:
patent: 5408199 (1995-04-01), Nagano et al.

Affiliated with

Also associated with

Rating

Circuit for controlling a linear-in-decibels attenuator... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for controlling a linear-in-decibels attenuator..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for controlling a linear-in-decibels attenuator... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3843984