Datasheet

-
-
-
-
-
-
-
100
105
110
115
120
125
130
135
-
Total Harmonic Distortion (dB)
-55
-35 -15
5
25
45
65 85 105 125
Temperature ( C)°
G = 1/1
G = 1/2
G = 1/4
G = 1/8
G = 1/16
G = 1/32
G = 1/64
125
120
115
110
105
100
95
Signal-to-Noise Ratio (dB)
-55
-35 -15
5
25
45
65 85 105 125
Temperature ( C)°
G = 1/1
G = 1/2
G = 1/4
G = 1/8
G = 1/16
G = 1/32
G = 1/64
-100
105
110
115
120
125
130
-
-
-
-
-
-
Total Harmonic Distortion (dB)
0.1 1 10
100 1k
Output Frequency (Hz)
G = 1/1
G = 1/2
G = 1/4
G = 1/8
G = 1/16
G = 1/32
G = 1/64
125
120
115
110
105
100
Signal-to-Noise Ratio (dB)
0.1 1 10
100 1k
Output Frequency (Hz)
G = 1/32
G = 1/16
G = 1/8
G = 1/4
G = 1/2
G = 1/1
-
-
-
-
-
-
20
40
60
80
100
120
140-
Total Harmonic Distortion (dB)
-100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0
Output Amplitude (dB)
G = 1/1
G = 1/2
G = 1/4
G = 1/8
G = 1/16
G = 1/32
G = 1/64
125
100
75
50
25
0
Signal-to-Noise Ratio (dB)
-100 -80 -60 -40 -20 0
Output Amplitude (dB)
G = 1/1
G = 1/2
G = 1/4
G = 1/8
G = 1/16
G = 1/32
G = 1/64
DAC1280
www.ti.com SBAS432A –APRIL 2010–REVISED SEPTEMBER 2010
TYPICAL CHARACTERISTICS (continued)
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).
THD vs TEMPERATURE SNR vs TEMPERATURE
Figure 14. Figure 15.
THD vs OUTPUT FREQUENCY SNR vs OUTPUT FREQUENCY
Figure 16. Figure 17.
THD vs OUTPUT AMPLITUDE
(1)
SNR vs OUTPUT AMPLITUDE
(1) THD measurement noise limited for amplitudes less than –10dB.
Figure 18. Figure 19.
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