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AD1954YSTRL Folha de dados(PDF) 8 Page - Analog Devices

Nome de Peças AD1954YSTRL
Descrição Electrónicos  SigmaDSP??3-Channel, 26-Bit Signal Processing DAC
Download  36 Pages
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD1954YSTRL Folha de dados(HTML) 8 Page - Analog Devices

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–8–
AD1954–Typical Performance Characteristics
0
–160
0
20
2
4
6
8
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
0
20
2
4
6
8
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
2k
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
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 equalization
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.
REV. A


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