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AD7264BSTZ Folha de dados(PDF) 3 Page - Analog Devices |
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AD7264BSTZ Folha de dados(HTML) 3 Page - Analog Devices |
3 / 32 page AD7264 Rev. A | Page 3 of 32 SPECIFICATIONS AVCC = 4.75 V to 5.25 V, CA_CBVCC = CC_CDVCC = 2.7 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V, fS = 1 MSPS and fSCLK = 34 MHz for the AD7264, fS = 500 kSPS and fSCLK = 20 MHz for the AD7264-5, VREF = 2.5 V internal/external; TA = −40°C to +105°C, unless otherwise noted. Table 1. Parameter Min Typ Max Unit Test Conditions/Comments DYNAMIC PERFORMANCE1 fIN = 100 kHz sine wave Signal-to-Noise Ratio (SNR)2 76 78 dB PGA gain setting = 2 Signal-to-(Noise + Distortion) Ratio (SINAD)2 74 77 dB Total Harmonic Distortion (THD)2 −85 −77 dB Spurious-Free Dynamic Range (SFDR) −97 dB Common-Mode Rejection Ratio (CMRR) −76 dB For PGA gain setting = 2, ripple frequency of 50 Hz/60 Hz; see Figure 17 and Figure 18 ADC-to-ADC Isolation2 −90 dB Bandwidth3 1.2 MHz @ −3 dB; PGA gain setting = 128 1.7 MHz @ −3 dB; PGA gain setting = 2 DC ACCURACY Resolution 14 Bits Integral Nonlinearity2 ±1.5 ±3 LSB Differential Nonlinearity2 ±0.5 ±0.99 LSB Guaranteed no missed codes to 14 bits Positive Full-Scale Error2 ±0.122 ±0.305 % FSR Precalibration ±0.018 % FSR Postcalibration Positive Full-Scale Error Match2 ±0.061 % FSR Zero Code Error2 ±0.092 ±0.244 % FSR Precalibration ±0.012 % FSR Postcalibration Zero Code Error Match2 ±0.061 % FSR Negative Full-Scale Error2 ±0.122 ±0.305 % FSR Precalibration ±0.018 % FSR Postcalibration Negative Full-Scale Error Match2 ±0.061 % FSR Zero Code Error Drift 2.5 μV/°C ANALOG INPUT Input Voltage Range, VIN+ and VIN− Gain 2 V V REF CM × ± V VCM = AVCC/2; PGA gain setting ≥ 2 Common-Mode Voltage Range, VCM VCM − 100 mV VCM + 100 mV V VCM = 2 V; PGA gain setting = 1; see Figure 194 (VCC/2) − 0.4 (VCC/2) + 0.2 V VCM = AVCC/2; PGA gain setting = 2 (VCC/2) − 0.4 (VCC/2) + 0.4 V VCM = AVCC/2; 3 ≤ PGA gain setting ≤ 32 (VCC/2) − 0.6 (VCC/2) + 0.8 V VCM = AVCC/2; PGA gain setting ≥ 48 DC Leakage Current ±0.001 ±1 μA Input Capacitance3 5 pF Input Impedance3 1 GΩ REFERENCE INPUT/OUTPUT Reference Output Voltage5 2.495 2.5 2.505 V 2.5 V ± 5 mV max @ 25°C Reference Input Voltage 2.5 V DC Leakage Current ±0.3 ±1 μA External reference applied to Pin VREFA/Pin VREFB Input Capacitance3 20 pF VREFA, VREFB Output Impedance3 4 Ω Reference Temperature Coefficient 20 ppm/°C VREF Noise3 20 μV rms |
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