-

-

-

-

-

-

-

100

105

110

115

120

125

130

135

-

-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

-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

-

-

-

-

-

-

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

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

-

-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

-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 TA = +25°C, AVDD = +2.5V, AVSS = +2.5V, DVDD = +3.3V, CLK = 4.096MHz, VREF = +5V, and RREF = 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.

Copyright © 2010, Texas Instruments Incorporated

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