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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PAC1934 датащи(PDF) 16 Page - Microchip Technology |
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PAC1934 датащи(HTML) 16 Page - Microchip Technology |
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16 / 64 page  PAC1931/2/3/4 DS20005850E-page 16 2017-2019 Microchip Technology Inc. 4.0 GENERAL DESCRIPTION The PAC1934 is a four-channel, bidirectional, high-side current-sensing device with precision voltage measurement capabilities, DSP for power calculation and a power accumulator. PAC1931, PAC1932 and PAC1933 are one, two and three-channel versions of the PAC1934. These devices measure the voltage developed across an external sense resistor (VSENSE) to represent the high-side current of a battery or voltage regulator. The PAC1931/2/3/4 also measures the SENSE+ pin voltages (VBUS). Both VBUS and VSENSE are converted to digital results by a 16-bit ADC, and the digital results are multiplied to give VPOWER. The VPOWER results are accumulated on-chip, which enables energy measurement over the accumulation period. The PAC1931/2/3/4 has an I2C/SMBus interface for digital control and reading results. It also has digital supply reference VDD I/O that is to be connected to the same supply as the digital master for the I2C/SMBUS, enabling digital I/O voltages as low as 1.62V. A system diagram is shown in Figure 4-1. FIGURE 4-1: PAC1931/2/3/4 System Diagram. Note: VDD and VDD I/O may be connected together. PAC1934 System Master SM_DATA SM_CLK VSOURCE 0V – 32V Sense Resistors VDD 1.62V to 5.5V Digital Supply GND 2.7V to 5.5V VSOURCE 0V – 32V VSOURCE 0V – 32V VSOURCE 0V – 32V Load Load Load Load SLOW PWRDN ADDRSEL VDD I/O PAC193X |
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