参数资料
型号: AD9779BSVZ
厂商: Analog Devices Inc
文件页数: 14/56页
文件大小: 0K
描述: IC DAC 16BIT DUAL 1GSPS 100TQFP
产品培训模块: Data Converter Fundamentals
DAC Architectures
标准包装: 1
位数: 16
数据接口: 串行
转换器数目: 2
电压电源: 模拟和数字
功率耗散(最大): 300mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 100-TQFP 裸露焊盘
供应商设备封装: 100-TQFP-EP(14x14)
包装: 托盘
输出数目和类型: 4 电流,单极
采样率(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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