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MCP3561T-E/ST 数据表(PDF) 7 Page - Microchip Technology |
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MCP3561T-E/ST 数据表(HTML) 7 Page - Microchip Technology |
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7 / 108 page  2019-2021 Microchip Technology Inc. DS20006181C-page 7 MCP3561/2/4 Analog Inputs Input Voltage at Input Pin CHN AGND –0.1 — AVDD + 0.1 V Analog inputs are measured with respect to AGND Differential Input Range VIN -VREF/Gain — +VREF/Gain V Differential Input Impedance (Note 5) ZIN — 510 — k Gain = 0.33x, proportional to 1/AMCLK — 260 — k Gain = 1x, proportional to 1/AMCLK — 150 — k Gain = 2x, proportional to 1/AMCLK —80 — k Gain = 4x, proportional to 1/AMCLK —40 — k Gain = 8x, proportional to 1/AMCLK —20 — k Gain ≥ 16x, proportional to 1/AMCLK Analog Input Leakage Current During ADC Shutdown ILI_A —±10 — nA External Voltage Reference Input Reference Voltage Range (VREF+– VREF-) VREF 0.6 — AVDD V 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 24 — — 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) 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. |
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