Datenblatt-Suchmaschine für elektronische Bauteile |
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AD1953YSTRL7 Datenblatt(PDF) 8 Page - Analog Devices |
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AD1953YSTRL7 Datenblatt(HTML) 8 Page - Analog Devices |
8 / 36 page AD1953–Typical Performance Characteristics –8– REV. 0 PERFORMANCE PLOTS The following plots demonstrate the performance achieved on the actual silicon. TPC 1 shows an FFT of a full-scale 1 kHz signal with a THD+N of –100 dB, which is dominated by a second harmonic. TPC 2 shows an FFT of a –60 dB sine wave, demon- strating the lack of low level artifacts. TPC 3 shows a frequency response plot with the seven equalization biquads set to an alter- nating pattern of 6 dB boosts and cuts. TPC 4 shows a linearity plot, where the measurement was taken with the same equaliza- tion curve used to make TPC 3. When the biquad filters are not in use, the signal passes through the filters with no quantization effects. TPC 4 therefore demonstrates that using double-precision math in the biquad filters has virtually eliminated any quantization artifacts. TPC 5 shows a tone-burst applied to the compressor, with the attack and recovery characteristics plainly visible. The rms detector was programmed for normal rms time constants; the hold/decay feature was not used for this plot. 0 –160 020 2468 14 16 18 –20 –80 –120 –40 –60 –100 –140 10 12 kHz TPC 1. FFT of Full-Scale Sine Wave (32k Points) 0 –160 020 2468 14 16 18 –20 –80 –120 –40 –60 –100 –140 10 12 kHz TPC 2. FFT of –60 dB Sine Wave (32k Points) Hz 0 –20 20 10k –10 1k 100 –2 –4 –6 –8 –12 –14 –16 –18 50 200 500 5k TPC 3. Frequency Response of EQ Biquad Filters 3.0 –3.0 –120 0 –100 –80 –20 0.5 –1.0 –2.0 0 –0.5 –1.5 –2.5 –60 –40 dBFS 2.5 1.5 2.0 1.0 TPC 4. Linearity Plot –2.0 –120 0 –100 –80 –20 –60 ms –1.5 –1.0 –0.5 0 0.5 1.0 1.5 2.0 TPC 5. Tone-Burst Response with Compressor Threshold Set to –20 dB |
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