US 11,736,080 B2
Linear class-AB voltage to current converter
Seong-Sik Myoung, Irvine, CA (US)
Assigned to NEWRACOM, INC, Irvine, CA (US)
Filed by NEWRACOM, INC., Lake Forest, CA (US)
Filed on Dec. 8, 2022, as Appl. No. 18/63,565.
Application 18/063,565 is a continuation of application No. 17/567,681, filed on Jan. 3, 2022, granted, now 11,552,607.
Claims priority of provisional application 63/134,162, filed on Jan. 5, 2021.
Prior Publication US 2023/0111481 A1, Apr. 13, 2023
Int. Cl. H03F 3/45 (2006.01); H03F 1/32 (2006.01)
CPC H03F 3/45475 (2013.01) [H03F 1/3211 (2013.01); H03F 3/45188 (2013.01); H03F 2200/84 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A voltage-to-current (V2I) converter circuit, comprising:
a core amplifier circuit configured to receive a differential input voltage signal, the differential input voltage signal including a first input voltage signal and a second input voltage signal, a value of the differential input voltage signal being equal to a difference between a voltage of the first input voltage signal and a voltage of the second input voltage signal;
a resistor coupled between a first node of the core amplifier circuit and a second node of the core amplifier circuit,
a first feedback circuit coupled to a third node of the core amplifier circuit and configured to provide feedback to the first node and the second node when the value of the input voltage signal is in a first range of voltages and to be turned off when the value of the input voltage signal is outside of the first range of voltages;
a second feedback circuit coupled to a fourth node of the core amplifier circuit and configured to provide feedback to the first node and the second node when the value of the input voltage signal is in a second range of voltages and to be turned off when the value of the input voltage signal is outside of the first range of voltages; and
an output circuit configured to produce a differential current output signal comprising a first current output signal and a second current output signal, a value of the differential current output signal being equal to a difference between a current of the first output current signal and a current of the second output current signal, the value of the differential current output signal being determined according to the value of the input voltage signal,
wherein the first range of voltages is continuous,
wherein the second range of voltages is continuous, and
wherein a lower portion of the first range of voltages overlaps an upper portion of the second range of voltages,
wherein an upper portion of the first range of voltages does not overlap the second range of voltages, and
wherein a lower portion of the second range of voltages does not overlap the first range of voltages.