Configurable receiver

摘要

A receiver that is selectively reconfigurable in a first and a second selectable configuration is disclosed. Configured in the first selectable configuration, the receiver may provide a low impedance input. Configured in the first selectable configuration, a low common-mode input signal may be received. In an embodiment, configured in the first selectable configuration, signaling technologies, such as a Near Ground Signaling (NGS) may be received. Configured in the second selectable configuration, the receiver may provide a high impedance input. Configured in the second selectable configuration, a high common-mode input signal may be received. In an embodiment, configured in the second selectable configuration, signaling technologies, such as a Low Voltage Differential Signaling (LVDS), Pseudo Open Drain Logic (PODL) signaling, Differential Rambus Signaling Level (DRSL), and/or Series Stub Terminated Logic (SSTL) signaling may be received.

主权项

1. A receiver that is selectively reconfigurable, comprising:
a first input to couple to, in a first selectable configuration of the receiver, a resistor load and a source terminal of a first field-effect transistor that is part of a first amplifier of the receiver, the first selectable configuration operating as a common gate type amplifier of the first input; the first input to couple to, in a second selectable configuration of the receiver, a gate terminal of a second field-effect transistor that is part of a second amplifier of the receiver, the second selectable configuration operating as a common source type amplifier of the first input; and, a configuration selector coupled with the second amplifier for deactivating the second amplifier from operating as the common source type amplifier of the first input in the first selectable configuration of the receiver, and activating the second amplifier to operate as the common source type amplifier of the first input in the second selectable configuration of the receiver.