AD9776A Analog Devices, AD9776A Datasheet - Page 23

• Manufacturer Part Number: AD9776A
• Description: Dual 12-Bit, 1 GSPS, Digital-to-Analog Converter
• Manufacturer: Analog Devices

Specifications of AD9776A

• Resolution (bits): 12bit
• Dac Update Rate: 1GSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: Par

REF –25.29dBm
*AVG
log
10dB
PAVG
10
W1 S2
CENTER 143.88MHz
*RES BW 30kHz
RMS RESULTS
CARRIER POWER
–12.67dBm/
3.84000MHz
–55
–60
–65
–70
–75
–80
–85
–90
4× Interpolation, f
f
0
DATA
= 122.88 MSPS, 4× Interpolation, f
25
Figure 49. AD9776A Single Carrier W-CDMA,
THIRD ADJACENT
FREQ OFFSET
5.000MHz
10.00MHz
15.00MHz
50
Figure 48. AD9776A ACLR vs. f
DATA
CHANNEL
*ATTEN 4dB
75
VBW 300kHz
= 122.88 MSPS, Amplitude = −3 dBFS
REF BW
3.884MHz
3.840MHz
3.840MHz
100
FIRST ADJACENT CHANNEL
F
OUT
125
(MHz)
dBc
–75.00
–78.05
–77.73
SECOND ADJACENT
CHANNEL
LOWER
150
SWEEP 162.2ms (601 pts)
dBm
–87.67
–90.73
–90.41
DAC
175
OUT
/4 Modulation
dBc
–75.30
–77.99
–77.50
,
200
UPPER
SPAN 50MHz
dBm
–87.97
–90.66
–90.17
225
250
Rev. B | Page 23 of 56
–150
–154
–158
–162
–166
–170
–150
–154
–158
–162
–166
–170
Eight-Tone Input with 500 kHz Spacing, f
0
0
Figure 50. AD9776A Noise Spectral Density vs. f
Figure 51. AD9776A Noise Spectral Density vs. f
f
Single-Tone Input at −6 dBFS, f
DAC
10
10
= 200MSPS
f
20
20
DAC
AD9776A/AD9778A/AD9779A
f
DAC
= 800MSPS
f
30
30
DAC
= 200MSPS
= 800MSPS
40
40
f
f
OUT
OUT
50
50
(MHz)
(MHz)
f
f
DAC
DAC
60
60
DATA
= 400MSPS
= 400MSPS
= 200 MSPS
70
70
DATA
= 200 MSPS
80
80
OUT
OUT
90
90
,
,
100
100