Analog/digital converter with regulated power supply and serial communication line

A digital converter, serial communication technology, applied in the direction of analog-to-digital converters, etc., can solve the problem of analog/digital converter chips without a regulated power supply circuit, etc., to simplify control and management capabilities, improve control and management capabilities , the effect of cost reduction

Active Publication Date: 2011-12-07
海芯科技(厦门)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing A / D converters do not have on-chip regulated power supply circuitry for external sensors

Method used

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  • Analog/digital converter with regulated power supply and serial communication line
  • Analog/digital converter with regulated power supply and serial communication line
  • Analog/digital converter with regulated power supply and serial communication line

Examples

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Embodiment Construction

[0016] see figure 2 The embodiment of the present invention is provided with an analog / digital converter 1, a digital interface 2, a regulated power supply 3, a clock circuit 4 and two serial communication lines 5 (data output line DOUT and input line PD_SCLK). The input signal 6 is converted into a digital signal by the analog / digital converter 1, and the digital signal is connected to other chips at the back end through the digital interface 2 through two serial communication lines 5 (DOUT and PD_SCLK), and the clock circuit 4 is respectively connected to the analog / digital Converter 1 is connected to digital interface 2 and clock input or internal clock generator 7 , input power 8 is connected to analog / digital converter 1 through regulated power supply 3 , and regulated power supply 3 is output to external sensor 9 . Compared with the existing analog / digital converter chip, this embodiment integrates a regulated power supply 3 that can be used by external sensors. The st...

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PUM

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Abstract

An analog / digital converter with a stabilized power supply and a serial port communication line relates to a conversion circuit. Provide a method that only needs 2 serial communication lines to realize the data reading and control of the front-end A / D converter chip by the back-end microprocessor, including high integration of power-off control of the front-end A / D converter, Low cost analog / digital converter with regulated power supply and serial communication line. Equipped with analog / digital converter, digital interface, regulated power supply, clock circuit and 2 serial communication lines. The input terminal of the analog / digital converter is connected to an external input analog signal, the input terminal of the digital interface is connected to the output terminal of the analog / digital converter, the output terminal of the digital interface is connected to an external back-end chip through two serial communication lines, and the clock circuit is connected to the analog / digital converter and the Digital interface and clock input or internal clock generator connection, the input power is connected to the analog / digital converter through the regulated power supply, and the regulated power supply is output to the external sensor.

Description

technical field [0001] The invention relates to a conversion circuit, in particular to a highly integrated, low-cost analog / digital converter with a stabilized voltage power supply and simplified serial port communication lines. Background technique [0002] Existing analog / digital converters do not have on-chip regulated power supply circuits for external sensors. Refer to the product descriptions of ADS1230 from Texas Instruments and CS5460 from Cirrus Logic. When these chips are used in combination with external sensors, an external regulated power supply is required to provide power to the external sensors and the internal circuits of the chip. In addition, these existing chip technologies require at least three communication and control lines for data output and various controls within the chip, including power-off control, when communicating with other external chips. [0003] figure 1 A typical schematic block diagram of an existing analog / digital converter chip is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/12
Inventor 许肖锋
Owner 海芯科技(厦门)有限公司
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