Datasheet
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Frequency (Hz)
Amplitude (dB)
Gain = 1/1
4k FFT
V = 0.5dBFS, 31.25Hz
THD = 129.2dB
SNR = 120.5dB
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OUT
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Frequency (Hz)
Amplitude (dB)
Gain = 1/2
4k FFT
V = 0.5dBFS, 31.25Hz
THD = 128.9dB
SNR = 119.5dB
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Frequency (Hz)
Amplitude (dB)
Gain = 1/4
4k FFT
V = 0.5dBFS, 31.25Hz
THD = 127.6dB
SNR = 117.4dB
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Frequency (Hz)
Amplitude (dB)
Gain = 1/8
4k FFT
V = 0.5dBFS, 31.25Hz
THD = 126dB
SNR = 114.1dB
OUT
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Frequency (Hz)
Amplitude (dB)
Gain = 1/16
8k FFT
V = 0.5dBFS, 31.25Hz
THD = 124.8dB
SNR = 109.4dB
OUT
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Frequency (Hz)
Amplitude (dB)
Gain = 1/32
8k FFT
V = 0.5dBFS, 31.25Hz
THD = 117.6dB
SNR = 104.8dB
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DAC1280
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SBAS432A –APRIL 2010–REVISED SEPTEMBER 2010
TYPICAL CHARACTERISTICS
At T
A
= +25°C, AVDD = +2.5V, AVSS = +2.5V, DVDD = +3.3V, CLK = 4.096MHz, V
REF
= +5V, and R
REF
= 30kΩ, unless
otherwise noted. Data acquired using circuit configuration shown in Figure 35. THD and SNR measured by ADS1282 (1ms
sampling and complement gain setting).
OUTPUT SPECTRUM OUTPUT SPECTRUM
Figure 2. Figure 3.
OUTPUT SPECTRUM OUTPUT SPECTRUM
Figure 4. Figure 5.
OUTPUT SPECTRUM OUTPUT SPECTRUM
Figure 6. Figure 7.
Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 7
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