Invention Grant
- Patent Title: Analog-digital converter
- Patent Title (中): 模数转换器
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Application No.: US11097456Application Date: 2005-04-01
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Publication No.: US07158069B2Publication Date: 2007-01-02
- Inventor: Pierangelo Confalonieri , Marco Zamprogno , Francesca Girardi
- Applicant: Pierangelo Confalonieri , Marco Zamprogno , Francesca Girardi
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Seed IP Law Group PLLC
- Agent Lisa K. Jorgenson; Robert Iannucci
- Priority: EP04425241 20040401; EP04425242 20040401
- Main IPC: H03M1/12
- IPC: H03M1/12

Abstract:
The described analog-digital converter comprises quantization means having an input for receiving an analog quantity to be converted, a register having an output for providing a digital quantity corresponding to the analog quantity, a timing pulse generator and logic means connected to the quantization means, the register and the timing pulse generator and capable of responding to a conversion request signal by activating the quantization means in such a manner as to make them carry out predetermined operations timed by the timing pulses and load into the register the digital quantity to be provided at the output. With a view to permitting the converter to function even when a system clock is not available, the timing pulse generator, which is incorporated in the integrated circuit that comprises the rest of the converter, comprises an oscillator capable of being started/stopped by a binary signal applied to its activation input and the logic means are capable of generating a stop signal of the oscillator and comprise means for generating the binary signal to be applied to the activation input of the oscillator. This signal assumes a first or a second binary state corresponding, respectively, to activation and deactivation of the oscillator in response to, respectively, the conversion request signal and the stop signal of the oscillator.
Public/Granted literature
- US20050231412A1 Analog-digital converter Public/Granted day:2005-10-20
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