A 0.64-pJ/Bit 28-Gb/s/Pin High-Linearity Single-Ended PAM-4 Transmitter With an Impedance-Matched Driver and Three-Point ZQ Calibration for Memory Interface

A single-ended four-level pulse-amplitude modulation (PAM-4) transmitter (TX) for memory interfaces achieves high signal integrity by combining an impedance-matched PAM-4 driver with a three-point ZQ calibration scheme. This improves PAM-4 linearity by allowing the driver to compensate for its imped...

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Veröffentlicht in:	IEEE journal of solid-state circuits 2021-04, Vol.56 (4), p.1278-1287
Hauptverfasser:	Jeong, Yong-Un, Park, Hyunkyu, Hyun, Changho, Chae, Joo-Hyung, Jeong, Shin-Hyun, Kim, Suhwan
Format:	Artikel
Sprache:	eng
Schlagworte:	Asymmetry Bandwidth Calibration CMOS Electric potential Equalization Four-level pulse-amplitude modulation (PAM-4) transmitter (TX) Impedance Impedance matching Inductors Linearity memory interface MOSFET Optical signal processing Pulse amplitude modulation Random access memory Resistors Signal integrity single-ended signaling Voltage voltage-mode (VM) driver ZQ calibration
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