Western Digital Technologies, Inc.

Sandisk Technologies Inc.

Ashish Savadia

Shiv Harit Mathur

Nitin Kumar Gupta

Venkatesh Ramachandra

Vinayak Ashok Ghatawade

Elkana Richter

Ramakrishnan Subramanian

Jayanth Mysore Thimmaiah

Rampraveen Somasundaram

Siddesh Darne

Tejaswini K

Storage devices are capable of utilizing receiver devices with native devices configured to support lower voltage supplies for higher read performances. The receiver device may include a current source circuit, first and second stage circuits, and a duty cycle balancer circuit. The first stage circuit may utilize first and second native devices with a threshold voltage (VTH) that enables proper lower voltage operations in saturation at high speeds. The current source stage circuit may utilize a third native device to track a transconductance and provide a reference current that becomes proportional to VTH to maintain tighter gain across process, variation, and temperature (PVT). The second stage circuit may utilize a current folding stage to provide a high gain for faster conversion of intermediate signals. The duty cycle balancer may utilize a fourth native device to balance a rise and fall delay skew across the PVT to maintain tighter duty cycle.

Dual voltage high speed receiver with toggle mode

A data storage system includes a storage medium including plurality of memory cells, a storage controller in communication with the storage medium, an electrical interface circuitry configured to pass data via a channel disposed between the storage medium and the storage controller; and voltage training circuitry configured to train a high-level output voltage (VOH) for each of a plurality of data lines of the channel. Training the VOH includes, for each of the plurality of data lines of the channel, calibrating a pull-up driver of the storage controller against an on-die termination circuit of the storage medium, calibrating a pull-down driver of the storage controller against the pull-up driver of the storage controller, and calibrating an on-die termination circuit of the storage controller against a pull-up driver of the storage medium.

High-level output voltage training for non-volatile memory

Growing community of inventors

Karnataka, India

Ashish Savadia