参数资料
型号: AD7927BRU
厂商: Analog Devices Inc
文件页数: 2/28页
文件大小: 0K
描述: IC ADC 12BIT 8CH 200KSPS 20TSSOP
标准包装: 75
位数: 12
采样率(每秒): 200k
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 7.5mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 20-TSSOP
包装: 管件
输入数目和类型: 8 个单端,单极
配用: EVAL-AD7927CBZ-ND - BOARD EVALUATION FOR AD7927
AD7927
Data Sheet
Rev. D | Page 10 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
FREQUENCY (kHz)
0
S
NR
(
d
B)
–90
100
–50
–70
80
60
40
20
–10
–30
–110
10
30
50
70
90
4096 POINT FFT
AVDD = 4.75V
fSAMPLE= 200kSPS
fIN = 50kHz
SINAD = 70.714dB
THD = –82.853dB
SFDR = –84.815dB
03
08
8-
00
4
Figure 4. Dynamic Performance at 200 kSPS
INPUT FREQUENCY (kHz)
75
0100
S
IN
AD
(
d
B)
70
65
60
AVDD =VDRIVE = 5.25V
AVDD =VDRIVE = 4.75V
AVDD =VDRIVE = 3.6V
AVDD =VDRIVE = 2.7V
fSAMPLE = 200kSPS
TA = 25°C
RANGE = 0 TO REFIN
03
08
8-
00
5
Figure 5. SINAD vs. Analog Input Frequency for Various Supply Voltages
at 200 kSPS
SUPPLY RIPPLE FREQUENCY (kHz)
0
200
PS
R
(d
B
)
–40
–60
–80
–90
100
–20
–50
–70
180
160
140
120
80
60
40
20
–10
–30
AVDD = 5V
200mV p-p SINE WAVE ON AVDD
REFIN = 2.5V, 1F CAPACITOR
TA = 25°C
03
08
8-
0
06
Figure 6. PSRR vs. Supply Ripple Frequency
INPUT FREQUENCY (kHz)
–50
0
1
0
1
T
HD
(
d
B
)
–65
–75
–85
–90
–55
–70
–80
–60
fSAMPLE = 200kSPS
TA = 25°C
RANGE = 0 TO REFIN
03
08
8-
0
07
AVDD =VDRIVE = 5.25V
AVDD =VDRIVE = 4.75V
AVDD =VDRIVE = 2.7V
AVDD =VDRIVE = 3.6V
Figure 7. THD vs. Analog Input Frequency for Various Supply Voltages
at 200 kSPS
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