Atmel Corporation

Microchip Technology Inc.

Atmel Automotive Gmbh

Thomas Janz

Werner Blatz

Martin Fischer

Daniel Moser

Michael Sagebiel

Jan Knopf

Lourans Samid

Robert Dvorszky

Johannes Schaefer

Christian Bechter

Alexander Scholz

Various embodiments relate to accelerating ramp-down of a modulated signal. In one embodiment, an antenna driver signal is defined and asserted to accelerate ramp-down. The accelerating ramp-down driver signal may include a series of sinusoidal-like pulses asserted at a driver output. The sinusoidal-like pulse may be synchronized by phase to a declining antenna current. Signal properties&#x2014;such as phase, amplitude, delay, shape and frequency&#x2014;of the sinusoidal-like pulse may be adopted to affect the ramp-down of the modulated signal.

Accelerating antenna ramp-down and related systems

In some implementations, an automatic gain control (AGC) circuit comprises: a pre-divider circuit operable to pre-divide an input signal according to a pre-divider circuit setting and output a pre-divided signal; a pre-amplifier operable to pre-amplify the pre-divided signal and output a pre-amplified signal; a post-divider circuit operable to post-divide the pre-amplified signal according to a post-divider circuit setting; an analog-to-digital converter (ADC) operable to generate a digital data stream from the post-divided signal; logic operable to sample the digital data stream; determine a pre-divider circuit setting and a post-divider circuit setting based on the sampled data stream; set the pre-divider circuit and the post-divider circuit based on the determined settings; and generate a received signal strength value based on the pre-divider circuit setting and the post-divider circuit setting.

Automatic gain control for received signal strength indication

A battery management and protection system includes a string of battery management and protection integrated circuit devices that may be connected to one another in a daisy chain configuration. Some of the devices can be electrically connected to one or more battery cells. Each device includes an inter-device communication interface comprising a daisy chain line driver. The system includes a controller external to the string of devices and a bi-directional connection lines connecting each device in the string to an upstream and/or downstream device in the string. The system can allow the external controller to access any single one of the devices in the daisy chain, any subset of the devices in the daisy chain, or all the devices in the daisy chain using a single command that is transmitted from one device to the next over a bi-directional connection line.

Token based communication in daisy chain configured battery management devices

In one embodiment, a method includes receiving a first analog signal at a first input; receiving a second analog signal at a second input; mixing the first analog signal with a first oscillator signal having a first frequency; mixing the second analog signal with a second oscillator signal having a second frequency; converting a sum signal to a digital signal; generating a first control signal based on a first digital value of a first function and the digital signal; and generating a second control signal based on a second digital value of a second function and the digital signal.

Analog-digital conversion

Growing community of inventors

Ulm, Germany

Thomas Janz