Low voltage swing pad driver and receiver
First Claim
1. An apparatus, comprising:
- an integrated asynchronous digital subscriber line semiconductor chip that includes an analog front-end portion; and
wherein;
the analog front-end portion includes a transmitter portion, the transmitter portion being communicatively coupled to a transmitter pad; and
the transmitter portion includes a voltage to current converter that is operable to convert a voltage signal to a current signal and to push/pull the current signal to the transmitter pad, from which the current signal is transmitted via a trace that is coupled to the transmitter pad.
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Accused Products
Abstract
Low voltage swing pad driver and receiver. A transmitter portion and a receiver portion are implemented within various devices that communicate using low voltage swing pads communicatively coupled via a trace. The transmitter portion of one device generates a current signal that is pushed/pulled to a low voltage swing pad and is then passed across the trace to another low voltage swing pad. The transmitter portion includes a current driver that outputs the current signal to the low voltage swing pads, and the receiver portion includes a trans-impedance amplifier that transforms the received current signal into a voltage signal. The low voltage swing pad driver and receiver generates a relatively low voltage swing when compared to CMOS full-scale voltage swings thereby significantly reducing the possibility of introducing any noise and/or distortion of data that is communicated via the interface.
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Citations
20 Claims
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1. An apparatus, comprising:
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an integrated asynchronous digital subscriber line semiconductor chip that includes an analog front-end portion; and
wherein;the analog front-end portion includes a transmitter portion, the transmitter portion being communicatively coupled to a transmitter pad; and the transmitter portion includes a voltage to current converter that is operable to convert a voltage signal to a current signal and to push/pull the current signal to the transmitter pad, from which the current signal is transmitted via a trace that is coupled to the transmitter pad. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus, comprising:
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an integrated asynchronous digital subscriber line semiconductor chip that includes an analog front-end portion; and
wherein;the analog front-end portion includes a receiver portion, the receiver portion being communicatively coupled to a receiver pad; the receiver portion includes a current to voltage converter that is operable to receive a current signal from the receiver pad and to transform the received current signal to a voltage signal; and the current signal is received at the receiver pad via a trace that couples to the receiver pad. - View Dependent Claims (7, 8, 9, 10)
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11. An apparatus, comprising:
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a transmitter portion; a transmitter pad that is communicatively coupled to the transmitter portion; and wherein; the transmitter portion includes a voltage to current converter that is operable to convert a voltage signal to a current signal and to push/pull the current signal to the transmitter pad, from which the current signal is transmitted via a trace that is coupled to the transmitter pad. - View Dependent Claims (12, 13, 14, 15)
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16. An apparatus, comprising:
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a receiver portion; a receiver pad that is communicatively coupled to the receiver portion; and wherein; the receiver portion includes a current to voltage converter that is operable to receive a current signal from the receiver pad and to transform the received current signal to a voltage signal; and the current signal is received at the receiver pad via a trace that couples to the receiver pad. - View Dependent Claims (17, 18, 19, 20)
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Specification