Datasheet

AD9741/AD9743/AD9745/AD9746/AD9747 Data Sheet
Rev. A | Page 6 of 28
T
MIN
to T
MAX
, AVDD33 = 3.3 V, DVDD33 = 3.3 V, DVDD18 = 1.8 V, CVDD18 = 1.8 V, I
FS
= 20 mA, full-scale digital input, maximum
sample rate, unless otherwise noted. The AD9745 is repeated in Table 4 so the user can compare it with all other parts.
Table 4. AD9745, AD9746, and AD9747
Parameter
AD9745 AD9746 AD9747
Unit Min Typ Max Min Typ Max Min Typ Max
SPURIOUS FREE DYNAMIC RANGE (SFDR)
f
DAC
= 250 MSPS, f
OUT
= 20 MHz 82 82 82 dBc
f
DAC
= 250 MSPS, f
OUT
= 70 MHz 70 70 70 dBc
f
DAC
= 250 MSPS, f
OUT
= 180 MHz
1
66 66 66 dBc
INTERMODULATION DISTORTION (IMD)
f
DAC
= 250 MSPS, f
OUT
= 20 MHz 86 86 86 dBc
f
DAC
= 250 MSPS, f
OUT
= 70 MHz 80 80 80 dBc
f
DAC
= 250 MSPS, f
OUT
= 180 MHz
1
74 74 74 dBc
CROSSTALK
f
DAC
= 250 MSPS, f
OUT
= 20 MHz 80 80 80 dBc
f
DAC
= 250 MSPS, f
OUT
= 70 MHz 80 80 80 dBc
f
DAC
= 250 MSPS, f
OUT
= 180 MHz
1
80 80 80 dBc
ADJACENT CHANNEL LEAKAGE RATIO (ACLR) SINGLE
CARRIER WCDMA
f
DAC
= 245.76 MSPS, f
OUT
= 15.36 MHz
76
78
82
dBc
f
DAC
= 245.76 MSPS, f
OUT
= 61.44 MHz 76 78 80 dBc
f
DAC
= 245.76 MSPS, f
OUT
= 184.32 MHz
1
72 74 74 dBc
NOISE SPECTRAL DENSITY (NSD)
f
DAC
= 245.76 MSPS, f
OUT
= 15.36 MHz −155 −163 −165 dBm/Hz
f
DAC
= 245.76 MSPS, f
OUT
= 61.44 MHz −155 −160 −162 dBm/Hz
f
DAC
= 245.76 MSPS, f
OUT
= 184.32 MHz
1
−155 −158 −160 dBm/Hz
1
Mix Mode.