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AD7921 Datasheet(PDF) 5 Page - Analog Devices |
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AD7921 Datasheet(HTML) 5 Page - Analog Devices |
5 / 28 page AD7911/AD7921 Rev. 0 | Page 5 of 28 AD7921 SPECIFICATIONS Temperature range for A Grade from −40°C to +85°C. VDD = 2.35 V to 5.25 V, fSCLK = 5 MHz, fSAMPLE = 250 kSPS; TA = TMIN to TMAX, unless otherwise noted. Table 2. Parameter A Grade1 Unit Test Conditions/Comments DYNAMIC PERFORMANCE fIN = 100 kHz sine wave Signal-to-Noise and Distortion (SINAD)2 70 dB min 72 dB typ Signal-to-Noise Ratio (SNR)2 71 dB min 72.5 dB typ Total Harmonic Distortion (THD)2 −81 dB typ Peak Harmonic or Spurious Noise (SFDR)2 −84 dB typ Intermodulation Distortion (IMD)2 Second-Order Terms −84 dB typ fa = 100.73 kHz, fb = 90.72 kHz Third-Order Term −86 dB typ fa = 100.73 kHz, fb = 90.72 kHz Aperture Delay 10 ns typ Aperture Jitter 30 ps typ Channel-to-Channel Isolation2 −90 dB typ Full Power Bandwidth 8.5 MHz typ @ 3 dB 1.5 MHz typ @ 0.1 dB DC ACCURACY Resolution 12 Bits Integral Nonlinearity2 ±1.5 LSB max Differential Nonlinearity2 −0.9/+1.5 LSB max Guaranteed no missed codes to 12 bits Offset Error2 ±1.5 LSB max ±0.5 LSB typ Offset Error Match2, 3 ±0.5 LSB max Gain Error2 ± 2 LSB max ±0.3 LSB typ Gain Error Match2, 3 ±1 LSB max Total Unadjusted Error (TUE)2 ±1.5 LSB max ANALOG INPUT Input Voltage Ranges 0 to VDD V DC Leakage Current ±0.3 µA max Input Capacitance 20 pF typ LOGIC INPUTS Input High Voltage, VINH 0.7 (VDD) V min 2.35 V ≤ VDD ≤ 2.7 V 2 V min 2.7 V < VDD ≤ 5.25 V Input Low Voltage, VINL 0.3 V max VDD = 2.35 V 0.2 (VDD) V max 2.35 V < VDD ≤ 2.7 V 0.8 V max 2.7 V < VDD ≤ 5.25 V Input Current, IIN, SCLK Pin ±0.3 µA max VIN = 0 V or VDD Input Current, IIN, CS Pin ±0.3 µA max Input Current, IIN, DIN Pin ±0.3 µA max Input Capacitance, CIN3 5 pF max LOGIC OUTPUTS Output High Voltage, VOH VDD − 0.2 V min ISOURCE = 200 µA; VDD = 2.35 V to 5.25 V Output Low Voltage, VOL 0.2 V max ISINK = 200 µA Floating-State Leakage Current ±0.3 µA max Floating-State Output Capacitance3 5 pF max Output Coding Straight (natural) binary See notes at end of table. |
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