参数资料
型号: AD7985BCPZ-RL7
厂商: Analog Devices Inc
文件页数: 28/28页
文件大小: 0K
描述: IC ADC 16B 2.5MSPS PULSR 20LFCSP
标准包装: 1,500
系列: PulSAR®
位数: 16
采样率(每秒): 2.5M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 33mW
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-VFQFN 裸露焊盘,CSP
供应商设备封装: 20-LFCSP-VQ
包装: 带卷 (TR)
输入数目和类型: 1 个伪差分,单极
AD7985
Rev. A | Page 9 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = DVDD = VIO = 2.5 V, BVDD = 5.0 V, VREF = 5.0 V, external reference (PDREF is high, REFIN is low), unless otherwise noted.
1.25
–1.25
–1.00
–0.75
–0.50
–0.25
0
0.25
0.50
0.75
1.00
0
16,384
32,768
49,152
65,536
IN
L
(
LS
B
)
CODE
POSITIVE INL = +0.38LSB
NEGATIVE INL = –0.46LSB
07947-
105
Figure 5. Integral Nonlinearity vs. Code
60,000
50,000
40,000
30,000
20,000
10,000
0
CO
UNT
S
CODE IN HEX
7FFC 7FFD 7FFE 7FFF
8000
8001
8002
8003
8004
0
122
6150
38,843
57,138
26,249
2537
33
0
07947-
106
Figure 6. Histogram of DC Input at Code Center (External Reference)
60,000
50,000
40,000
30,000
20,000
10,000
0
CO
UNT
S
CODE IN HEX
7FFD
7FFC
7FFB
7FFE 7FFF 8000 8001 8002 8003 8004 8005
0
11
565
33,064
49,585
31,957
7024
403
8
0
8455
07947-
107
Figure 7. Histogram of DC Input at Code Center (Internal Reference)
1.00
–1.00
–0.75
–0.50
–0.25
0
0.25
0.50
0.75
0
16,384
32,768
49,152
65,536
DNL
(
L
S
B)
CODE
POSITIVE DNL = +0.19LSB
NEGATIVE DNL = –0.20LSB
07947-
108
Figure 8. Differential Nonlinearity vs. Code
60,000
50,000
40,000
30,000
20,000
10,000
0
CO
UNT
S
CODE IN HEX
7FFD
7FFC
7FFB
7FFE 7FFF 8000 8001 8002 8003 8004
0
2
479
11,888
48,730
53,522
15,645
800
6
0
07947-
109
Figure 9. Histogram of DC Input at Code Transition (External Reference)
50,000
45,000
40,000
35,000
30,000
25,000
20,000
15,000
10,000
5000
0
CO
UNT
S
CODE IN HEX
7FFE
7FFD
7FFC
7FFF 8000 8001 8002 8003 8004 8005
0
90
2947
20,474
46,649
43,622
15,598
1662
30
0
07947-
110
Figure 10. Histogram of DC Input at Code Transition (Internal Reference)
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