THS5651

10-BIT, 100 MSPS, CommsDAC

™

DIGITAL-TO-ANALOG CONVERTER

SLAS197A – JUNE 1999

9

POST OFFICE BOX 655303

Figure 9

48

54

60

66

72

78

–30 –27 –24 –21 –18 –15 –12

–9

–6

–3

0

3.38/3.63 MHz @ 25 MSPS

DUAL TONE SPURIOUS FREE DYNAMIC RANGE

vs

AOUT AT FOUT = FCLOCK/7

Aout – dBFS

0.675/0.725 MHz @ 5 MSPS

13.5/14.5 MHz

@ 100 MSPS

9.67/10.43 MHz

@ 70 MSPS

6.75/7.25 MHz @ 50 MSPS

Figure 10

–84

–78

–72

–66

0

20406080

100

120

TOTAL HARMONIC DISTORTION

vs

CLOCK FREQUENCY AT FOUT = 2 MHZ

Fclock – MSPS

2nd Harmonic

3rd Harmonic

4th Harmonic

Figure 11

48

54

60

66

72

78

2

4

6

8

10

1214

161820

SPURIOUS FREE DYNAMIC RANGE

vs

FULL-SCALE OUTPUT CURRENT

IoutFS – mA

Fout = 2.5 MHz

Fout = 10 MHz

Fout = 40 MHz

Fout = 28.6 MHz

Fclock = 100 MSPS

Figure 12

48

54

60

66

72

78

0

5

10

15

20

25

30

35

40

45

50

SPURIOUS FREE DYNAMIC RANGE

vs

OUTPUT FREQUENCY AT 100 MSPS

Fout – MHz

Differential @ –6 dBFS

Differential @ 0 dBFS

Single-ended @ –6 dBFS

Single-ended

@ 0 dBFS

†AV

DD = DVDD = 5 V, IOUTFS = 20 mA, differential transformer coupled output, 50 Ω doubly terminated load, TA = 25°C (unless otherwise

noted.)