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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MCP3461RT-E/ST датащи(PDF) 8 Page - Microchip Technology |
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MCP3461RT-E/ST датащи(HTML) 8 Page - Microchip Technology |
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8 / 118 page  MCP3461/2/4R DS20006404C-page 8 2020-2021 Microchip Technology Inc. External Voltage Reference Input Reference Voltage Range (VREF+– VREF-) VREF 0.6 — AVDD VVREF_SEL = 0 External Noninverting Input Voltage Reference VREF+VREF-+ 0.6 — AVDD V External Inverting Input Voltage Reference VREF-AGND —VREF+– 0.6 V DC Performance No Missing Code Resolution Resolution 16 — — Bits OSR ≥ 256 (Note 1) Offset Error VOS -900/Gain — 900/Gain µV AZ_MUX = 0 (Note 6) -(0.05 + 0.8/ Gain) — 0.05 + 0.8/ Gain AZ_MUX = 1 (Notes 2, 6) Offset Error Temperature Coefficient VOS_DRIFT — 70/Gain 300/Gain nV/°C AZ_MUX = 0 (Notes 2, 6) — 4/Gain 16/Gain AZ_MUX = 1 (Notes 2, 6) Gain Error GE -3 — +3 % Note 6 Gain Error Temperature Coefficient GE_DRIFT — 0.5 2 ppm/°C Gain: 1x, 2x, 4x (Note 2) 14 Gain: 8x (Note 2) 2 8 Gain: 0.33x, 16x (Note 2) Integral Nonlinearity (Note 7) INL -10 — +10 ppm FSR Gain = 0.33x (Note 2) -7 — +7 Gain = 1x (Note 2) -7 — +7 Gain = 2x (Note 2) -10 — +10 Gain = 4x (Note 2) -20 — +20 Gain = 8x (Note 2) -32 — +32 Gain = 16x (Note 2) AVDD Power Supply Rejection Ratio DC PSRR — -76 – 20 x LOG (Gain) —dB AVDD varies from 2.7V to 3.6V, VIN =0V DVDD Power Supply Rejection Ratio DC PSRR — -110 — dB DVDD varies from 1.8V to 3.6V, VIN =0V DC Common-Mode Rejection Ratio DC CMRR — -126 — dB VINCOM varies from 0V to AVDD, VIN =0V ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all parameters apply at AVDD = 2.7V to 3.6V, DVDD = 1.8V to AVDD +0.1V, MCLK = 4.9152 MHz, VREF =AVDD, ADC_MODE[1:0] = 11. All other register map bits to their default conditions, TA = -40°C to +125°C, VIN = -0.5 dBFS at 50 Hz. Parameters Sym. Min. Typ. Max. Units Conditions Note 1: This parameter is ensured by design and not 100% tested. 2: This parameter is ensured by characterization and not 100% tested. 3: REFIN- must be connected to ground for single-ended measurements. 4: Full-Scale Range (FSR) = 2 x VREF/Gain. 5: This input impedance is due to the internal input sampling capacitor and frequency. This impedance is measured between the two input pins of the channel selected with the input multiplexer. 6: Applies to all analog gains. Offset and gain errors depend on analog gain settings. See Section 2.0 “Typical Performance Curves”. 7: INL is the difference between the endpoints line and the measured code at the center of the quantization band. 8: DIDD is measured while no transfer is present on the SPI bus. 9: An external buffer is recommended for external use. 10: Start-up time is the reaction time to the SPI command. 11: Settling time depends on bypass caps on REFIN+/OUT pin. |
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