Low-power programmable high-gain time difference amplifier with regeneration time control

• Published in: Electronics letters Vol. 50; no. 16; pp. 1129 - 1131
• Main Authors: Heo, Minuk, Kwon, Daehyeon, Lee, Minjae
• Format: Journal Article
• Language: English
• Published: Stevenage The Institution of Engineering and Technology 31.07.2014; Institution of Engineering and Technology; John Wiley & Sons, Inc
• Subjects: Amplification; Amplifiers; Applied sciences; Circuits and systems; crowbar current consumption reduction; Degeneration; differential amplifiers; Electronics; Exact sciences and technology; flip‐flops; Gain; gain controllable SR‐latch‐based time difference amplifier; Integrated circuits; Integrated circuits by function (including memories and processors); low‐power electronics; low‐power programmable high‐gain time difference amplifier; programmable circuits; programmable transconductance; Regeneration; regeneration time control; resistor degeneration; Resistors; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Strontium; switch; Switches; TDA; regeneration time control; programmable transconductance; switches; switch; TDA; resistor degeneration; resistors; crowbar current consumption reduction; programmable circuits; differential amplifiers; low-power programmable high-gain time difference amplifier; gain controllable SR-latch-based time difference amplifier; low-power electronics; flip-flops; Trigger circuit; Time stamping; Programmable circuit; Degeneration; Selector switch; Low-power electronics; Resistor; Transconductance
• ISSN: 0013-5194; 1350-911X; 1350-911X
• DOI: 10.1049/el.2014.1782

A gain controllable SR-latch-based time difference amplifier (TDA) with a gain of up to 150 by controlling the regeneration time constant, especially with programmable transconductance (gm), is presented. The presented gm control uses resistor degeneration at the input switches so that the effective gm is reduced, whereas the time difference gain increases. Unavoidable large crowbar current from the slow regeneration is avoided by shifting to the fast regeneration mode after regeneration is completed, which effectively reduces current consumption by 29.3%.