rev. d
Typical 效能 characteristics–ad7476/ad7477/ad7478
–9–
频率 – khz
0
snr – db
50 100 150 200 250 300 350 400 450 500
–15
–35
–55
–75
–95
–115
8192 要点 fft
f
样本
= 1msps
f
在
= 100khz
sinad = 71.67db
thd = –81.00db
sfdr = –81.63db
0
tpc 1. ad7476 动态 效能 在 1 msps
频率 – khz
0
snr – db
50 100 150 200 250 300
–15
–35
–55
–75
–95
–115
–15
8192 要点 fft
f
样本
= 600ksps
f
在
= 100khz
sinad = 71.71db
thd = –80.88db
sfdr = –83.23db
tpc 2. ad7476 动态 效能 在 600 ksps
频率 – khz
0
snr – db
50 100 150 200 250 300 350 400 450 500
–50
–60
–70
–80
–90
–100
8192 要点 fft
f
样本
= 1msps
f
在
= 100khz
sinad = 61.66db
thd = –80.64db
sfdr = –85.75db
–40
–30
–20
–10
0
tpc 3. ad7477 动态 效能 在 1 msps
频率 – khz
0
–10
050
snr – db
150 200 250 300 350 400 450 500100
–20
–30
–40
–50
–60
–70
–80
–90
8192 要点 fft
f
样本
= 1msps
f
在
= 100khz
sinad = 49.82db
thd = –75.22db
sfdr = –67.78db
tpc 4. ad7478 动态 效能 在 1 MSPS
输入 频率 – hz
–66
10k
sinad – db
–67
–68
–69
–70
–71
–72
–73
100k 1M
V
DD
= 2.35v
V
DD
= 2.7v
V
DD
= 5.25v
V
DD
= 4.75v
V
DD
= 3.6v
sclk = 20mhz
tpc 5. ad7476 sinad vs. 输入 频率 在 993 ksps
输入 频率 – hz
–69.0
10k
sinad – db
–69.5
–70.0
–70.5
–71.0
–71.5
–72.0
–72.5
100k 1M
V
DD
= 2.35v
V
DD
= 2.7v
V
DD
= 5.25v
V
DD
= 4.75v
V
DD
= 3.6v
sclk = 12mhz
tpc 6. ad7476 sinad vs. 输入 频率 在 605 ksps