参数资料
型号: AD7724ASTZ
厂商: Analog Devices Inc
文件页数: 16/16页
文件大小: 0K
描述: IC MOD SIGMA-DELTA DUAL 48LQFP
标准包装: 1
类型: 调制器
分辨率(位): 15 b
采样率(每秒): 250k
数据接口: 串行
电压电源: 模拟和数字
电源电压: 2.85 V ~ 5.25 V,4.75 V ~ 5.25 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 托盘
REV. B
AD7724
–9–
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
dB
0
6.5
FREQUENCY – MHz
TPC 11. Modulator Output (0 Hz to MCLK/2)
0
–154
dB
–20
–80
–100
–120
–140
–40
–60
0E+0
10E+3 20E+3 30E+3 40E+3 50E+3 60E+3
70E+3 80E+3
98E+3
CLKIN = 13MHz
SNR = 90.1dB
S/(N+D) = 89.2dB
SFDR = –99.5dB
THD = –96.6dB
2ND = –100.9dB
3RD = –106.0dB
4TH = –99.5dB
90E+3
TPC 12. 16K Point FFT
0
–154
dB
–20
–80
–100
–120
–140
–40
–60
0E+0
10E+3 20E+3 30E+3 40E+3
50E+3 60E+3 70E+3 80E+3
96E+3
90E+3
XTAL = 12.288MHz
SNR = 89.0dB
S/(N+D) = 87.8dB
SFDR = –94.3dB
THD = –93.8dB
2ND = –94.3dB
3RD = –108.5dB
4TH = –105.7dB
TPC 13. 16K Point FFT
CODE
INL
ERROR
LSB
1.0
0.8
–1.0
0
20000
65535
40000
–0.4
–0.8
–0.6
0
–0.2
0.6
0.2
0.4
TPC 10. Integral Nonlinearity Error
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
dB
0
409.0268
FREQUENCY – kHz
TPC 14. Modulator Output (0 to 409.0268 kHz)
0
–154
dB
–20
–80
–100
–120
–140
–40
–60
0E+0
10E+3 20E+3 30E+3 40E+3 50E+3 60E+3
70E+3 80E+3
98E+3
AIN = 90kHz
CLKIN = 13MHz
SNR = 89.6dB
S/(N+D) = 89.6dB
SFDR = –108.0dB
90E+3
TPC 15. 16K Point FFT
0
–154
dB
–20
–80
–100
–120
–140
–40
–60
0E+0
10E+3 20E+3 30E+3 40E+3 50E+3 60E+3 70E+3 80E+3
96E+3
AIN = 90kHz
XTAL = 12.288MHz
SNR = 88.1dB
S/(N+D) = 88.1dB
SFDR = –103.7dB
90E+3
TPC 16. 16K Point FFT
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