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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AMC7832IPAPR.A датащи(PDF) 54 Page - Texas Instruments |
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AMC7832IPAPR.A датащи(HTML) 54 Page - Texas Instruments |
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54 / 74 page  MUX ADC GPIO Temperature Sensor DAC Heat Sink Temp Sensor Power Power Power Amplifier Power Amplifier RF IN RF IN AMC7832 Heat Sink Temperature Sensing Current Sensing Rshunt 2I AMC7832 SLAS836 – MARCH 2014 www.ti.com 9 Applications and Implementation 9.1 Application Information The AMC7832 device is a highly integrated, low-power, complete analog monitoring and control solution. Although the device can be used in many different systems -- Industrial Control, Test and Measurement, and Optical Communications -- the device is largely used in multi-channel RF communication driven applications which incorporate power amplifiers. Power amplifiers (PAs) include transistor technologies that are extremely temperature sensitive, and require DC biasing circuits to optimize RF performance, power efficiency, and stability. The AMC7832 device provides 12 DAC channels, which can be used to bias the inputs of the power amplifiers. The device also includes an internal local temperature sensor, and 17 ADC channels for general-purpose monitoring. There are mainly two different types of monitoring schemes: current sensing, and temperature sensing. In the current-sense application the PA drain current is monitored by measuring the shunt resistor’s differential voltage drop. The devices internal local temperature sensor and analog inputs – which can be configured for remote temperature ICs or thermistors – can be used to detect temperature variations during PA operation. Figure 57 shows the block diagrams to these different systems. 9.2 Typical Application Figure 57. AMC7832 Example Control and Monitor System 54 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Product Folder Links: AMC7832 |
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