AD9779A-EBZ datasheet(21/56 Pages) AD

21 / 56 page

AD9776A/AD9778A/AD9779A

Rev. B | Page 21 of 56

1.5

CODE

10k

1.0

0.5

–0.5

–1.0

–1.5

Figure 36. AD9778A Typical INL

0.6

CODE

–0.2

–1.0

16k

14k

12k

10k

0.4

0.2

–0.4

–0.6

–0.8

Figure 37. AD9778A Typical DNL

100

400

fOUT (MHz)

120

160

200

240

280

320

360

4× 200MSPS

4× 150MSPS

4× 100MSPS

Figure 38. AD9778A IMD vs. fOUT,

4× Interpolation

100

fOUT (MHz)

fDATA = 250MSPS

fDATA = 200MSPS

fDATA = 160MSPS

Figure 39. AD9778A In-Band SFDR vs. fOUT,

2× Interpolation

–90

250

fOUT (MHz)

–70

–80

–60

100

125

150

175

200

225

FIRST ADJACENT CHANNEL

SECOND ADJACENT

CHANNEL

THIRD ADJACENT

CHANNEL

Figure 40. AD9778A ACLR, Single Carrier W-CDMA,

4× Interpolation, fDATA = 122.88 MSPS, Amplitude = −3 dBFS

SPAN 50MHz

SWEEP 162.2ms (601 pts)

VBW 300kHz

CENTER 143.88MHz

*RES BW 30kHz

RMS RESULTS

CARRIER POWER

–12.74dBm/

3.84000MHz

FREQ OFFSET

5.000MHz

10.00MHz

15.00MHz

REF BW

3.884MHz

3.840MHz

dBc

–76.49

–80.13

–80.90

dBm

–89.23

–92.87

–93.64

LOWER

dBc

–76.89

–80.02

–79.53

dBm

–89.63

–92.76

–92.27

UPPER

REF –25.39dBm

*AVG

log

10dB

PAVG

W1 S2

*ATTEN 4dB

Figure 41. AD9778A ACLR,

fDATA = 122.88 MSPS, 4× Interpolation, fDAC/4 Modulation

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