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AD977AN Arkusz danych(PDF) 2 Page - Analog Devices |
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AD977AN Arkusz danych(HTML) 2 Page - Analog Devices |
2 / 24 page AD977/AD977A –2– REV. D A Grade B Grade C Grade Parameter Min Typ Max Min Typ Max Min Typ Max Unit RESOLUTION 16 16 16 Bits ANALOG INPUT Voltage Range ±10 V, 0 V to 5 V, . . . (See Table II) Impedance See Table II Sampling Capacitance 40 40 40 pF THROUGHPUT SPEED Complete Cycle 10 10 10 µs Throughput Rate 100 100 100 kHz DC ACCURACY Integral Linearity Error ±3 ±2.0 ±3 LSB 1 Differential Linearity Error –2 +3 –1 +1.75 ±2 LSB No Missing Codes 15 16 15 Bits Transition Noise 2 1.0 1.0 1.0 LSB Full-Scale Error 3, 4 ±0.5 ±0.25 ±0.5 % Full-Scale Error Drift ±7 ±7 ±7 ppm/ °C Full-Scale Error Ext. REF = 2.5 V ±0.5 ±0.25 ±0.5 % Full-Scale Error Drift Ext. REF = 2.5 V ±2 ±2 ±2 ppm/ °C Bipolar Zero Error 3 Bipolar Ranges ±10 ±10 ±15 mV Bipolar Zero Error Drift Bipolar Ranges ±2 ±2 ±2 ppm/ °C Unipolar Zero Error 3 Unipolar Ranges ±10 ±10 ±10 mV Unipolar Zero Error Drift Unipolar Ranges ±2 ±2 ±2 ppm/ °C Recovery to Rated Accuracy After Power-Down 5 2.2 µF to CAP 1 1 1 ms Power Supply Sensitivity VANA = VDIG = VD = 5 V ± 5% ±8 ±8 ±8 LSB AC ACCURACY Spurious Free Dynamic Range 6 90 96 90 dB 7 Total Harmonic Distortion 6 –90 –96 –90 dB Signal-to-(Noise+Distortion) 6 83 85 83 dB –60 dB Input 27 28 27 dB Signal-to-Noise 6 83 85 83 dB Full Power Bandwidth 8 700 700 700 kHz –3 dB Input Bandwidth 1.5 1.5 1.5 MHz SAMPLING DYNAMICS Aperture Delay 40 40 40 ns Transient Response, Full-Scale Step 2 2 2 µs Overvoltage Recovery 9 150 150 150 ns REFERENCE Internal Reference Voltage 2.48 2.5 2.52 2.48 2.5 2.52 2.48 2.5 2.52 V Internal Reference Source Current 1 1 1 µA External Reference Voltage Range for Specified Linearity 2.3 2.5 2.7 2.3 2.5 2.7 2.3 2.5 2.7 V External Reference Current Drain Ext. REF = 2.5 V 100 100 100 µA NOTES 1LSB means Least Significant Bit. With a ±10 V input, one LSB is 305 µV. 2Typical rms noise at worst case transitions and temperatures. 3Measured with fixed resistors as shown in Figures 11, 12 and 13. Adjustable to zero. Tested at room temperature. 4Full-Scale Error is expressed as the % difference between the actual full-scale code transition voltage and the ideal full scale transition voltage, and includes the effect of offset error. For bipolar input ranges, the Full-Scale Error is the worst case of either the –Full Scale or +Full Scale code transition voltage errors. For unipolar input ranges, Full-Scale Error is with respect to the +Full-Scale code transition voltage. 5External 2.5 V reference connected to REF. 6f IN = 20 kHz, 0.5 dB down unless otherwise noted. 7All specifications in dB are referred to a full scale ±10 V input. 8Full-Power Bandwidth is defined as full-scale input frequency at which Signal-to-(Noise+Distortion) degrades to 60 dB, or 10 bits of accuracy. 9Recovers to specified performance after a 2 × F S input overvoltage. Specifications subject to change without notice. AD977–SPECIFICATIONS (–40 C to +85 C, F S = 100 kHz, VDIG = VANA = 5 V, unless otherwise noted) |
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