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DAC34SH84 View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
DAC34SH84 Quad-Channel, 16-Bit, 1.5 GSPS Digital-to-Analog Converter (DAC) TI
Texas Instruments TI
DAC34SH84 Datasheet PDF : 77 Pages
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DAC34SH84
SLAS808B – FEBRUARY 2012 – REVISED JULY 2012
www.ti.com
TYPICAL CHARACTERISTICS (continued)
All plots are at 25°C, nominal supply voltage, fDAC = 1500 MSPS, 2× interpolation, NCO enabled, mixer gain disabled, QMC
enabled with gain set at 1446 for both I/Q channels, 0-dBFS digital input, 20-mA full-scale output current with 4:1 transformer
(unless otherwise noted)
10
100
0
PLL enabled w/ PFD of 46.875 MHz
fDAC = 1500 MSPS
90
PLL disabled
PLL enabled w/ PFD of 46.875 MHz
−10
fout = 200 MHz
80
−20
−30
70
−40
60
−50
50
−60
40
−70
−80
30
−90
10
110 210 310 410 510 610 710
Frequency (MHz)
Figure 13. Single-Tone Spectral Plot
800
G013
20
0
100
200
300
400
500
600
Output Frequency (MHz)
G014
Figure 14. SFDR vs Output Frequency Over Clocking
Options
100
0dB FS
90
−6dB FS
−12dB FS
80
70
60
50
40
30
20
0
100
200
300
400
500
600
Output Frequency (MHz)
G015
Figure 15. IMD3 vs Output Frequency Over Input Scale
100
90
80
70
60
50
40
30
20
0
FDAC = 750 MSPS, 1x interpolation
FDAC = 1500 MSPS, 2x interpolation
FDAC = 1500 MSPS, 4x interpolation
FDAC = 1500 MSPS, 8x interpolation
FDAC = 1500 MSPS, 16x interpolation
100
200
300
400
500
600
Output Frequency (MHz)
G016
Figure 16. IMD3 vs Output Frequency Over Interpolation
100
90
80
70
60
50
40
fDAC = 800 MSPS
fDAC = 1000 MSPS
30
fDAC = 1200 MSPS
fDAC = 1500 MSPS
20
0
100
200
300
400
500
Output Frequency (MHz)
G017
Figure 17. IMD3 vs Output Frequency Over fDAC
100
Iout FS = 10 mA, 4:1 Transformer
90
Iout FS = 20 mA, 4:1 Transformer
Iout FS = 30 mA, 2:1 Transformer
80
70
60
50
40
30
20
0
100
200
300
400
500
Output Frequency (MHz)
G018
Figure 18. IMD3 vs Output Frequency Over IOUTFS
16
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