THS5661A_15 Datasheet, PDF (10/34 Pages) Texas Instruments – DIGITAL-TO-ANALOG CONVERTER

THS5661A
12ĆBIT, 125 MSPS, CommsDAC
DIGITALĆTOĆANALOG CONVERTER
SLAS247B − NOVEMBER 1999 REVISED SEPTEMBER 2002
TYPICAL CHARACTERISTICS^†
SPURIOUS FREE DYNAMIC RANGE
vs
A_OUT AT F_OUT = F_CLOCK/11
78
DVDD = 5 V
4.55 MHz @ 50 MSPS
72
66
6.36 MHz @ 70 MSPS
60
9.1 MHz @ 100 MSPS
54
48
−27 −24 −21 −18 −15 −12 −9 −6 −3 0
Aout − dBFS
Figure 13
DUAL TONE SPURIOUS FREE DYNAMIC RANGE
vs
A_OUT AT F_OUT = F_CLOCK/7
78
DVDD = 5 V
72
0.675/0.725 MHz @ 5 MSPS
3.38/3.63 MHz @ 25 MSPS
66
60
SPURIOUS FREE DYNAMIC RANGE
vs
A_OUT AT F_OUT = F_CLOCK/5
78
DVDD = 5 V
72
5 MHz @ 25 MSPS
66
10 MHz @ 50 MSPS
60
54
48
14 MHz @ 70 MSPS
20 MHz @ 100 MSPS
42
−27 −24 −21 −18 −15 −12 −9 −6 −3 0
Aout − dBFS
Figure 14
TOTAL HARMONIC DISTORTION
vs
CLOCK FREQUENCY AT F_OUT = 2 MHz
−66
DVDD = 5 V
−72
2nd Harmonic
−78
3rd Harmonic
13.5/14.5 MHz
54
@ 100 MSPS
6.75/7.25 MHz @ 50 MSPS
9.67/10.43 MHz @ 70 MSPS
48
−27 −24 −21 −18 −15 −12 −9 −6 −3 0
Aout − dBFS
Figure 15
−84
4th Harmonic
−90
0
20
40
60
80 100 120
Fclock −Clock Frequency − MSPS
Figure 16
† AVDD _{= 5 V, IOUTFS = 20 mA, differential transformer coupled output, 50 Ω doubly terminated load, TA = 25°C (unless otherwise}
noted.)
10
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