fOUT (MHz) IMD (dBc ) 9" />
參數(shù)資料
型號: AD9778BSVZRL
廠商: Analog Devices Inc
文件頁數(shù): 14/56頁
文件大?。?/td> 0K
描述: IC DAC 14BIT DUAL 1GSPS 100TQFP
產(chǎn)品培訓(xùn)模塊: DAC Architectures
標準包裝: 1,000
位數(shù): 14
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 2
電壓電源: 模擬和數(shù)字
功率耗散(最大): 300mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 100-TQFP 裸露焊盤
供應(yīng)商設(shè)備封裝: 100-TQFP-EP(14x14)
包裝: 帶卷 (TR)
輸出數(shù)目和類型: 4 電流,單極;4 電流,雙極
采樣率(每秒): 1G
AD9776/AD9778/AD9779
Rev. A | Page 21 of 56
100
50
0
400
fOUT (MHz)
IMD
(dBc
)
90
80
70
60
40
80
120
160
200
240
280
320
360
4
× 200MSPS
4
× 150MSPS
4
× 100MSPS
05361-
035
Figure 38. AD9778 IMD, 4× Interpolation
100
50
0
100
fOUT (MHz)
SFDR
(dBc)
90
80
70
60
20
40
60
80
fDATA = 250MSPS
fDATA = 200MSPS
fDATA = 160MSPS
05361-036
Figure 39. AD9778 In-Band SFDR, 2× Interpolation
–90
0
250
fOUT (MHz)
ACLR
(dBc
)
–70
–80
–60
25
50
75
100
125
150
175
200
225
1ST ADJ CHAN
2ND ADJ CHAN
3RD ADJ CHAN
05361-
037
Figure 40. AD9778 ACLR, Single-Carrier WCDMA, 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
10
W1 S2
*ATTEN 4dB
05361-038
Figure 41. AD9778 ACLR, fDATA = 122.88 MSPS, 4× Interpolation,
fDAC/4 Modulation
–150
–170
0
100
fOUT (MHz)
NSD
(dBm/Hz)
–154
–158
–162
–166
20
40
60
80
fDAC = 800MSPS
fDAC = 400MSPS
fDAC = 200MSPS
05361-039
Figure 42. AD9778 Noise Spectral Density vs. fDAC Eight-Tone Input
with 500 kHz Spacing, fDATA = 200 MSPS
–150
–170
0
100
fOUT (MHz)
NSD
(dBm/Hz)
–154
–158
–162
–166
20
40
60
80
fDAC = 800MSPS
fDAC = 400MSPS
fDAC = 200MSPS
05361-040
Figure 43. AD9778 Noise Spectral Density vs. fDAC Single-Tone Input
at 6 dBFS, fDATA = 200 MSPS
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