Power amplifier with serial interface and associated methods
First Claim
Patent Images
1. An RF power amplifier formed using an integrated circuit having a plurality of interface pins, comprising:
- a power amplifier circuit;
a mode selection pin for selecting a fist mode or a second mode of operation, wherein the first mode of operation is a serial interface mode and the second mode of operation is a non-serial interface mode;
a first interface pin, wherein the first interface pin has a first function in the first mode of operation and a second function in the second mode of operation; and
a serial interface formed using the integrated circuit for sending and receiving signals.
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Abstract
In a power amplifier, a serial bus interface is provided for sending and receiving information to other devices, such as a baseband controller. The power amplifier includes several control pins that can be used as a serial interface, or alternately, with a direct pin control interface. The power amplifier uses various techniques to address noise problems related to the use of a serial bus with a power amplifier.
43 Citations
41 Claims
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1. An RF power amplifier formed using an integrated circuit having a plurality of interface pins, comprising:
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a power amplifier circuit; a mode selection pin for selecting a fist mode or a second mode of operation, wherein the first mode of operation is a serial interface mode and the second mode of operation is a non-serial interface mode; a first interface pin, wherein the first interface pin has a first function in the first mode of operation and a second function in the second mode of operation; and a serial interface formed using the integrated circuit for sending and receiving signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wireless communication device comprising:
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a controller circuit adapted to control the operation of the communication device; a transceiver; an RF power amplifier having a mode control pin and a plurality of interface pins, wherein the state of the mode control pin determines whether the RF power amplifier operates using a serial interface mode or a non-serial interface mode, and wherein the plurality of interface pins provide a serial interface with the controller circuit in the serial interface mode and the plurality of interface pins provide a non-serial interface with the controller circuit in the non-serial interface mode; and a serial bus coupled to the controller, transceiver, and RF power amplifier. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of controlling an RF power amplifier in a wireless communications device, comprising:
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providing a baseband controller coupled to a digital bus; providing an RF power amplifier having a serial interface for communicating with the digital bus and having a mode control pin; applying a control signal to the mode control pin to select between a first mode of operation and a second mode of operation, wherein the first ode of operation is a serial interface mode and the second mode of operation is a non-serial interface mode; providing a first interface pin, wherein the first interface pin has a first function in the first mode of operation and a second function in the second mode of operation; and coupling the serial interface of the RF power amplifier to the digital bus. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification