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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MCP3911 датащи(PDF) 1 Page - Microchip Technology |
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MCP3911 датащи(HTML) 1 Page - Microchip Technology |
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1 / 72 page  © 2012 Microchip Technology Inc. DS22286A-page 1 MCP3911 Features • Two Synchronous Sampling 16/24-bit Resolution Delta-Sigma A/D Converters • 94.5 dB SINAD, -106.5 dBc Total Harmonic Distortion (THD) (up to 35th harmonic), 111 dB SFDR for Each Channel • 2.7V - 3.6V AVDD, DVDD • Programmable Data Rate up to 125 ksps - 4 MHz Maximum Sampling Frequency • Oversampling Ratio up to 4096 • Ultra Low Power Shutdown Mode with <2 µA • -122 dB Crosstalk between the Two Channels • LowDrift1.2V InternalVoltageReference:7 ppm/°C • Differential Voltage Reference Input Pins • High Gain PGA on Each Channel (up to 32V/V) • Phase Delay Compensation with 1 µs Time Resolution • Separate Modulator Output Pins for Each Channel • Separate Data Ready Pin for Easy Synchronization • Individual 24-bit Digital Offset and Gain Error Correction for Each Channel • High-Speed 20 MHz SPI Interface with Mode 0,0 and 1,1 Compatibility • Continuous Read/Write Modes for Minimum Communication • Low Power Consumption (8.9 mW at 3.3V, 5.6 mW at 3.3V in low-power mode, typical) • Available in Small 20-lead QFN and SSOP Pack- ages, Pin-to-pin Compatible with MCP3901 • Extended Temperature Range: -40°C to +125°C Applications • Energy Metering and Power Measurement • Automotive • Portable Instrumentation • Medical and Power Monitoring • Audio/Voice Recognition Description The MCP3911 is a 2.7V to 3.6V dual channel Analog Front End (AFE) containing two synchronous sampling Delta-Sigma Analog-to-Digital Converters (ADC), two PGAs, phase delay compensation block, low-drift internal voltage reference, modulator output block, digital offset and gain errors calibration registers, and high-speed 20 MHz SPI compatible serial interface. The MCP3911 ADCs are fully configurable with fea- tures such as: 16/24-bit resolution, OSR from 32 to 4096, gain from 1x to 32x, independent shutdown and reset, dithering and auto-zeroing. The communication is largely simplified with the one-byte-long commands including various continuous read/write modes that can be accessed by the Direct Memory Access (DMA) of an MCU, and with a separate data ready pin that can be directly connected to an Interrupt Request (IRQ) input of an MCU. The MCP3911 is capable of interfacing a large variety of voltage and current sensors including shunts, current transformers, Rogowski coils and Hall effect sensors. Package Type OSC1/CLKI 1 2 3 4 20 19 18 17 16 15 14 13 5 6 7 8 OSC2 SDI RESET DVDD AVDD CH0+ CH0- CH1- 12 9 DGND MDAT0 MDAT1 DR CH1+ AGND SDO 11 10 REFIN+/OUT REFIN- CS SCK 20-Lead SSOP 20-Lead QFN 2 CH1- CH1+ CH0+ SCK CS OSC2 OSC1/CLKI CH0- EP 20 1 19 18 17 3 4 14 13 12 11 678 9 21 5 10 15 16 AGND DR 3.3V Two-Channel Analog Front End |
Аналогичный номер детали - MCP3911 |
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Аналогичное описание - MCP3911 |
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