Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
168 words
A monolithic integrated R-2R network comprising: a plurality of R resistors, a last one of which is coupled to a terminal resistor; a plurality of switch structures, one of which is coupled in series with a first of said plurality of resistors, another one of which is coupled in series between said last one of said plurality of resistors and said terminal resistor and each of the remainder of said plurality of switch structures is coupled in series between different adjacent ones of the remainder of said plurality of resistors, each of said plurality of switch structures being in a conducting state; and a plurality of 2R resistor units each having two electronic switches to connect the associated one of said plurality of units to a selected one of ground and another reference point, each of said two switches of each of said plurality of units having a common terminal directly connected to each other and one terminal of a different one of said plurality of switch structures.
Claim 2
Dependent Claim
168 words
A monolithic integrated R-2R network comprising: a plurality of R resistors, a last one of which is coupled to a terminal resistor; a plurality of switch structures, one of which is coupled in series with a first of said plurality of resistors, another one of which is coupled in series between said last one of said plurality of resistors and said terminal resistor and each of the remainder of said plurality of switch structures is coupled in series between different adjacent ones of the remainder of said plurality of resistors, each of said plurality of switch structures being in a conducting state; and a plurality of 2R resistor units each having two electronic switches to connect the associated one of said plurality of units to a selected one of ground and another reference point, each of said two switches of each of said plurality of units having a common terminal directly connected to each other and one terminal of a different one of said plurality of switch structures.
Claim 3
Dependent Claim
34 words
A network according to claim 1 wherein: each of said plurality of switch structures is a given type of transistor structure and each of said electronic switches is a transistor of said given type.
Claim 4
Dependent Claim
24 words
A network according to claim 2, wherein: said transistor structure is an insulated-gate field-effect transistor structure and said transistor is an insulated-gate field-effect transistor.
Claim 5
Dependent Claim
17 words
A network according to claim 3 wherein: said common terminals and said one terminal are source electrodes.
Claim 6
Dependent Claim
17 words
A network according to claim 2, wherein: said common terminal and said one terminal are source electrodes.
Claim 7
Dependent Claim
36 words
A network according to claims 1, 2, 3, 4 or 5, wherein: each of said plurality of switch structures has a resistance equal to one half of a turn-on resistance of each of said electronic switches.
Claim 8
Dependent Claim
31 words
A network according to claim 6, wherein: each of said plurality of units further includes two 2R resistors each connected in series with a different one of said two electronic switches.
Claim 9
Dependent Claim
36 words
A network according to claims 1, 2, 3, 4 or 5 wherein: each of said plurality of units further includes two 2R resistors each connected in series with a different one of said two electronic switches.
Claim 10
Dependent Claim
38 words
A network according to claim 8, further including an operational amplifier having a non-inverting input coupled to ground and one of said two 2R resistors and an inverting input coupled to the other of said two 2R resistors.