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AD7707BRU データシート(PDF) 2 Page - Analog Devices |
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AD7707BRU データシート(HTML) 2 Page - Analog Devices |
2 / 40 page REV. A –2– AD7707–SPECIFICATIONS Parameter B Version 1 Units Conditions/Comments STATIC PERFORMANCE Low Level Input Channels (AIN1 and AIN2) No Missing Codes 16 Bits min Guaranteed by Design. Filter Notch < 60 Hz Output Noise See Tables I and III Depends on Filter Cutoffs and Selected Gain Integral Nonlinearity 2 ±0.003 % of FSR max Filter Notch < 60 Hz. Typically ±0.0003% Unipolar Offset Error See Note 3 Unipolar Offset Drift 4 0.5 µV/°C typ Bipolar Zero Error See Note 3 Bipolar Zero Drift 4 0.5 µV/°C typ For Gains 1, 2 and 4 0.1 µV/°C typ For Gains 8, 16, 32, 64 and 128 Positive Full-Scale Error 5 See Note 3 Full-Scale Drift 4, 6 0.5 µV/°C typ Gain Error 7 See Note 3 Gain Drift 4, 8 0.5 ppm of FSR/ °C typ Bipolar Negative Full-Scale Error 2 ±0.003 % of FSR max Typically ±0.0007% Bipolar Negative Full-Scale Drift4 1 µV/°C typ For Gains of 1 to 4 0.6 µV/°C typ For Gains of 8 to 128 HIGH LEVEL INPUT CHANNEL (AIN3) No Missing Codes 16 Bits min Guaranteed by Design. Filter Notch < 60 Hz Output Noise See Tables IV and VI Depends on Filter Cutoffs and Selected Gain Integral Nonlinearity2 ±0.003 % of FSR max Filter Notch < 60 Hz. Typically ±0.0003% Unipolar Offset Error 9 ±10 mV max Typically Within ±1.5 mV Unipolar Offset Drift 4 µV/°C typ Bipolar Zero Error 9 ±10 mV max Typically Within ±1.5 mV Bipolar Zero Drift 4 µV/°C typ For Gains 1, 2 and 4 1 µV/°C typ For Gains 8, 16, 32, 64 and 128 Gain Error ±0.2 % typ Typically Within ±0.05% Gain Drift 0.5 ppm of FSR/ °C typ Negative Full-Scale Error 2 ±0.0012 % of FSR typ LOW LEVEL ANALOG INPUTS/REFERENCE INPUTS Specifications for AIN and REF IN Unless Noted Input Common-Mode Rejection (CMR) 2 Low Level Input Channels, AIN1 and AIN2 AVDD = 5 V Gain = 1 100 dB typ Gain = 2 105 dB typ Gain = 4 110 dB typ Gain = 8 to 128 130 dB typ AVDD = 3 V Gain = 1 105 dB typ Gain = 2 110 dB typ Gain = 4 120 dB typ Gain = 8 to 128 130 dB typ Normal-Mode 50 Hz Rejection 2 98 dB typ For Filter Notches of 10 Hz, 25 Hz, 50 Hz, ±0.02 × f NOTCH Normal-Mode 60 Hz Rejection 2 98 dB typ For Filter Notches of 10 Hz, 20 Hz, 60 Hz, ±0.02 × f NOTCH Common-Mode 50 Hz Rejection 2 150 dB typ For Filter Notches of 10 Hz, 25 Hz, 50 Hz, ±0.02 × f NOTCH Common-Mode 60 Hz Rejection2 150 dB typ For Filter Notches of 10 Hz, 20 Hz, 60 Hz, ±0.02 × f NOTCH Absolute/Common-Mode REF IN Voltage 2 AGND to AVDD V min to V max Absolute/Common-Mode AIN Voltage 2, 10 AGND – 100 mV V min BUF Bit of Setup Register = 0 AVDD + 30 mV V max AGND + 50 mV V min BUF Bit of Setup Register = 1 AVDD – 1.5 V V max AIN DC Input Current2 1 nA max AIN Sampling Capacitance 2 10 pF max BUF = 0 AIN Differential Voltage Range 11 0 to +VREF/GAIN 12 nom Unipolar Input Range (B/U Bit of Setup Register = 1) ±V REF/GAIN nom Bipolar Input Range (B/U Bit of Setup Register = 0) AIN Input Sampling Rate, fS GAIN × f CLKIN/64 For Gains of 1 to 4 fCLKIN/8 For Gains of 8 to 128 Reference Input Range REF IN(+) – REF IN(–) Voltage 1/1.75 V min/max AVDD = 2.7 V to 3.3 V. VREF = 1.225 V ± 1% for Specified Performance REF IN(+) – REF IN(–) Voltage 1/3.5 V min/max AVDD = 4.75 V to 5.25 V. VREF = 2.5 V ± 1% for Specified Performance REF IN Input Sampling Rate, fS fCLKIN/64 ±100 mV INPUT RANGE Low Level Input Channels, (AIN1 and AIN2) Gain = 16, Unbuffered Mode INL 2 ±0.003 % of FSR max Filter Notch < 60 Hz Input Common-Mode Rejection (CMR) 2 80 dB typ Power Supply Rejection (PSR) 2 90 dB typ (AVDD = DVDD = +3 V or 5 V, REF IN(+) = +1.225 V with AVDD = 3 V and +2.5 V with AVDD = 5 V; REF IN(–) = GND; VBIAS = REFIN(+); MCLK IN = 2.4576 MHz unless otherwise noted. All specifications TMIN to TMAX unless otherwise noted.) |
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