THS5661A

12-BIT, 125 MSPS, CommsDAC

™

DIGITAL-TO-ANALOG CONVERTER

SLAS247 – NOVEMBER 1999

8

POST OFFICE BOX 655303

48

54

60

66

72

78

0

10203040

Figure 5

SPURIOUS FREE DYNAMIC RANGE

vs

OUTPUT FREQUENCY AT 70 MSPS

Fout – Output Frequency – MHz

– 12 dBFS

– 6 dBFS

0 dBFS

DVDD = 5 V

Figure 6

48

54

60

66

72

78

0

1020304050

SPURIOUS FREE DYNAMIC RANGE

vs

OUTPUT FREQUENCY AT 100 MSPS

Fout – Output Frequency – MHz

– 12 dBFS

– 6 dBFS

0 dBFS

DVDD = 5 V

48

54

60

66

72

78

0

1020304050

Figure 7

SPURIOUS FREE DYNAMIC RANGE

vs

OUTPUT FREQUENCY AT 125 MSPS

Fout – Output Frequency – MHz

0 dBFS

– 6 dBFS

– 12 dBFS

DVDD = 5 V

42

48

54

60

66

72

78

84

90

0

10203040

Figure 8

SPURIOUS FREE DYNAMIC RANGE

vs

OUTPUT FREQUENCY AT 0 dBFS

Fout – Output Frequency – MHz

DVDD = 3.3 V

fCLK = 25 MSPS

fCLK = 5 MSPS

fCLK = 50 MSPS

fCLK = 70 MSPS

fCLK = 100 MSPS

†AV

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

noted.)