Coded data generation or conversion – Analog to or from digital conversion – With particular solid state devices
Patent
1993-07-12
1994-08-16
Hoff, Marc S.
Coded data generation or conversion
Analog to or from digital conversion
With particular solid state devices
307571, H03M 166
Patent
active
053390784
ABSTRACT:
A digital-to-analog converter switch provides substantially equal propagation delays for both high-to-low and low-to-high transitions of the binary input signal. A ground path transistor and an output transistor are connected to a common node and operated in different states of conduction as determined by the gate voltage on the ground path transistor. A substantially constant current is fed to the node and is either switched through the output transistor or the ground path transistor. In order to compensate for unequal propagation delays in switching the current on and off through the output transistor, additional mimic transistors are provided between the binary input signal and the gate of the ground path transistor. Therefore, transitions in both directions involve one fast and one short propagation delay.
REFERENCES:
patent: 4831282 (1989-05-01), Colles
patent: 5184129 (1993-02-01), Fung et al.
patent: 5258757 (1993-11-01), Reynolds
Clark William R.
Hoff Marc S.
Raytheon Company
Sharkansky Richard M.
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