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REF5050 bảng dữ liệu(PDF) 28 Page - Texas Instruments

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tên linh kiện REF5050
Giải thích chi tiết về linh kiện  LOW DISTORTION DIGITAL-TO-ANALOG CONVERTER FOR SEISMIC
PDF  43 Pages
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nhà sản xuất  TI1 [Texas Instruments]
Trang chủ  http://www.ti.com
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REF5050 bảng dữ liệu(HTML) 28 Page - Texas Instruments

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−1
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−50
0
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SYNC pin transition
Time (µs)
VOUTP, VOUTN
DC mode
Full Scale Step
G000
0
10
20
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50
60
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Output Frequency (kHz)
CLK = 4.096MHz
Excludes I/V Filter Rolloff
OUTPUT FREQUENCY RESPONSE
DAC1282
SBAS490
– DECEMBER 2011
www.ti.com
Figure 46 shows the step response time of the dc mode. The step response of sine and digital data mode have
similar settling times. Note that additional filter components in the signal path may also affect the response time.
Figure 46. DC Mode Step Response
FREQUENCY RESPONSE
The DAC internal signal generator is capable of output signal frequencies from 0.489 Hz to 250 Hz. Frequencies
outside of this range are also possible by driving the DAC directly with an external digital input (bitstream).
However, the DAC low-pass filters the digital input and results in a sinx/x frequency response. The
–3 dB signal
bandwidth of the DAC filter is 8.2 kHz. Figure 47 illustrates the DAC1282 frequency response. Note that
high-order noise-shaped digital inputs may limit the useable frequency range as a result of rising noise.
Figure 47. DAC Frequency Response
28
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© 2011, Texas Instruments Incorporated
Product Folder Link(s): DAC1282



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