参数资料
型号: AD7274BRM
厂商: Analog Devices Inc
文件页数: 4/29页
文件大小: 0K
描述: IC ADC 12BIT 3MSPS HS LP 8MSOP
标准包装: 50
位数: 12
采样率(每秒): 3M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 18mW
电压电源: 单电源
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 管件
输入数目和类型: 1 个单端,单极
AD7273/AD7274
Rev. 0 | Page 11 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
–20
–40
–60
–80
–100
–120
0
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
FREQUENCY (kHz)
S
NR
(dB)
100
16384 POINT FFT
FSAMPLE = 3MSPS
FIN = 1MHz
SINAD = 71.05
THD = –80.9
SFDR = –82.2
04973-010
Figure 10. AD7274 Dynamic Performance at 3 MSPS, Input Tone = 1 MHz
–20
–40
–60
–80
–100
–120
0
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
FREQUENCY (kHz)
S
NR
(dB)
100
16384 POINT FFT
FSAMPLE = 3MSPS
FIN = 1MHz
SINAD = 66.56
THD = –77.4
SFDR = –78.2
04973-011
Figure 11. AD7273 Dynamic Performance at 3 MSP, Input Tone = 1 MHz
72.2
72.0
71.0
70.8
70.6
70.4
71.2
70.2
70.0
69.8
69.6
69.4
69.2
71.4
71.6
71.8
69.0
100
1500
1000
INPUT FREQUENCY (kHz)
S
INAD
(dB)
VDD = 3V
VDD = 3.6V
FSAMPLE = 3MSPS
04973-012
VDD = 2.5V
Figure 12. AD7274 SINAD vs. Analog Input Frequency at 3 MSPS
for Various Supply Voltages, SCLK Frequency = 48 MHz
72.2
72.0
71.8
71.6
71.4
71.2
71.0
70.8
70.6
70.4
70.2
100
1500
1000
INPUT FREQUENCY (kHz)
S
NR
(dB)
VDD = 3V
VDD = 2.5V
VDD = 3.6V
FSAMPLE = 3MSPS
04973-013
Figure 13. AD7274 SNR vs. Analog Input Frequency at 3 MSPS
for Various Supply Voltages, SCLK Frequency = 48 MHz
–72
–74
–76
–78
–80
–82
–84
–86
–88
–90
100
1500
1000
INPUT FREQUENCY (kHz)
THD
(dB)
VDD = 2.5V
VDD = 3V
VDD = 3.6V
04973-014
Figure 14. THD vs. Analog Input Frequency at 3 MSPS
for Various Supply Voltages, SCLK Frequency = 48 MHz
–40
–50
–60
–70
–80
–90
100
1500
1000
INPUT FREQUENCY (kHz)
THD
(dB)
RIN = 100Ω
RIN = 0Ω
RIN = 10Ω
04973-015
Figure 15. THD vs. Analog Input Frequency at 3 MSPS for Various Source
Impedance, SCLK Frequency = 48 MHz, Supply Voltage = 3 V
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