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AD976CN Arkusz danych(PDF) 3 Page - Analog Devices |
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AD976CN Arkusz danych(HTML) 3 Page - Analog Devices |
3 / 16 page –3– REV. C AD976/AD976A AD976–SPECIFICATIONS AD976A AD976B AD976C Parameter Min Typ Max Min Typ Max Min Typ Max Units RESOLUTION 16 16 16 Bits ANALOG INPUT Voltage Range ±10 ±10 ±10 V Impedance 23 23 23 k Ω Capacitance 22 22 22 pF THROUGHPUT SPEED Complete Cycle 10 10 10 µs Throughput Rate 100 100 100 kHz DC ACCURACY Integral Linearity Error ±3 ±2 ±3 LSB 1 Differential Linearity Error –2 +3 –1 +1.75 ±2 LSB No Missing Codes 15 16 15 Bit Transition Noise 2 1.0 1.0 1.0 LSB Full-Scale Error3, 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 Error4 ±10 ±10 ±15 mV Bipolar Zero Error Drift ±2 ±2 ±2 ppm/ °C Power Supply Sensitivity VANA = VDIG = VD = 5 V ± 5% ±8 ±8 ±8 LSB AC ACCURACY Spurious Free Dynamic Range5 90 96 90 dB6 Total Harmonic Distortion5 –90 –96 –90 dB Signal to (Noise + Distortion) 5 83 85 83 dB –60 dB Input 27 28 27 dB Signal to Noise5 83 85 83 dB Full-Power Bandwidth 7 700 700 700 kHz 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 8 150 150 150 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 DIGITAL INPUTS Logic Levels VIL –0.3 +0.8 –0.3 +0.8 –0.3 +0.8 V VIH +2.0 VDIG + 0.3 +2.0 VDIG + 0.3 +2.0 VDIG + 0.3 V IIL ±10 ±10 ±10 µA IIH ±10 ±10 ±10 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 Figure 5 (AD976) and Figure 6 (AD976A). Adjustable to zero as shown in Figure 7. 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. The full-scale error is the worst case of either the –full-scale or +full-scale code transition voltage errors. 5f IN = 20 kHz (AD976) and fIN = 45 kHz (AD976A), 0.5 dB down, unless otherwise noted. 6All specifications in dB are referred to a full scale ± 10 V input. 7Full-power bandwidth is defined as full-scale input frequency at which signal-to-(noise + distortion) degrades to 60 dB or 10 bits of accuracy. 8Recovers to specified performance after a 2 × F S input overvoltage. Specifications subject to change without notice. (–40 C to +85 C, FS = 100 kHz, Ref = Internal Reference, VDIG = VANA = +5 V unless otherwise noted) |
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