参数资料
型号: AD7714ARS-5
厂商: Analog Devices Inc
文件页数: 5/40页
文件大小: 0K
描述: IC ADC SIGNAL COND 5V 28-SSOP
标准包装: 1
位数: 24
采样率(每秒): 1k
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 7mW
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: 28-SSOP(0.209",5.30mm 宽)
供应商设备封装: 28-SSOP
包装: 管件
输入数目和类型: 3 个差分,单极;3 个差分,双极;5 个伪差分,单极;5 个伪差分,双极
配用: EVAL-AD7714-3EBZ-ND - BOARD EVAL FOR AD7714
2
AD7714
REV. C
–13–
BUFFERED MODE NOISE
Table III shows the typical output rms noise and effective resolution for some typical notch and –3 dB frequencies for the AD7714-
5 with fCLK IN = 2.4576 MHz and BUFFER = +5 V. Table IV gives the information for the AD7714-3 again with fCLK IN = 2.4576
MHz and BUFFER = +5 V. The numbers given are for the bipolar input ranges and are generated with a differential analog input
voltage of 0 V. For the AD7714-5, the VREF voltage is +2.5 V while for the AD7714 the VREF voltage is +1.25 V. The numbers in
brackets in each table are for the effective resolution of the part (rounded to the nearest 0.5 LSB). The effective resolution of the
device is defined as the ratio of the output rms noise to the input full scale (i.e., 2
× V
REF/GAIN). It should be noted that it is not
calculated using peak-to-peak output noise numbers. Peak-to-peak noise numbers can be up to 6.6 times the rms numbers while
effective resolution numbers based on peak-to-peak noise can be 2.5 bits below the effective resolution based on rms noise as quoted
in the tables.
Table III. AD7714-5 Buffered Mode Output Noise/Resolution for fCLK IN = 2.4576 MHz
Filter First
Typical Output RMS Noise in
V (Effective Resolution in Bits)
Notch & O/P
–3 dB
Gain of
Data Rate
Frequency
1
2
4
8
16
32
64
128
5 Hz
1.31 Hz
0.99
(22.5)
0.68
(22)
0.46 (21.5) 0.26 (21)
0.26 (20)
0.26 (19)
0.26 (18)
0.26 (17)
10 Hz
2.62 Hz
1.5
(21.5)
0.95
(21.5)
0.63 (21)
0.41 (20.5) 0.39 (19.5) 0.36 (18.5) 0.36 (17.5) 0.36 (16.5)
25 Hz
6.55 Hz
2.5
(21)
1.7
(20.5)
0.88 (20.5) 0.75 (19.5) 0.57 (19)
0.57 (18)
0.57 (17)
0.56 (16)
30 Hz
7.86 Hz
2.9
(20.5)
1.8
(20.5)
1
(20)
0.87 (19.5) 0.75 (18.5) 0.72 (17.5) 0.72 (16.5) 0.71 (15.5)
50 Hz
13.1 Hz
4.2
(20)
2.5
(20)
1.5
(19.5) 1.1
(19)
0.94 (18.5) 0.94 (17.5) 0.94 (16.5) 0.87 (15.5)
60 Hz
15.72 Hz
6.1
(19.5)
2.9
(19.5)
2
(19.5) 1.2
(19)
1
(18.5) 0.97 (17.5) 0.95 (16.5) 0.94 (15.5)
100 Hz
26.2 Hz
13.8
(18.5)
6.5
(18.5)
3.5
(18.5) 2.2
(18)
1.3
(18)
1.2
(17)
1.3
(16)
1.1
(15)
250 Hz
65.5 Hz
87
(16)
56
(15.5)
25
(15.5) 11
(15.5) 5.7
(15.5) 3.6
(15.5) 2.4
(15)
2.1
(14)
500 Hz
131 Hz
508
(13.5)
241
(13.5)
117 (13.5) 73
(13)
34
(13)
16
(13)
8.5
(13)
5.2
(13)
1 kHz
262 Hz
2860 (11)
1700 (10.5)
745 (10.5) 480 (10.5) 197 (10.5) 94
(10.5) 53
(10.5) 23
(10.5)
Table IV. AD7714-3 Buffered Mode Output Noise/Resolution for fCLK IN = 2.4576 MHz
Filter First
Typical Output RMS Noise in
V (Effective Resolution in Bits)
Notch & O/P
–3 dB
Gain of
Data Rate
Frequency
1
2
4
8
16
32
64
128
5 Hz
1.31 Hz
1.16
(21)
0.76
(20.5)
0.34 (20)
0.29 (20)
0.29 (19)
0.28 (18)
0.26 (17)
0.26 (16)
10 Hz
2.62 Hz
1.7
(20.5)
1
(20.5)
0.7
(20)
0.46 (19.5) 0.45 (18.5) 0.4
(17.5) 0.4
(16.5) 0.4
(15.5)
25 Hz
6.55 Hz
3.5
(19.5)
1.8
(19.5)
1.1
(19)
0.74 (18.5) 0.63 (18)
0.6
(17)
0.6
(16)
0.6
(15)
30 Hz
7.86 Hz
3.7
(19.5)
2.2
(19)
1.3
(19)
0.76 (18.5) 0.68 (18)
0.66 (17)
0.66 (16)
0.66 (15)
50 Hz
13.1 Hz
4.5
(19)
3
(18.5)
1.7
(18.5) 1.0
(18)
0.92 (17.5) 0.9
(16.5) 0.89 (15.5) 0.89 (14.5)
60 Hz
15.72 Hz
5.3
(19)
3.3
(18.5)
1.8
(18.5) 1.1
(18)
1
(17)
0.96 (16.5) 0.96 (15.5) 0.96 (14.5)
100 Hz
26.2 Hz
10
(18)
4.9
(18)
3.1
(17.5) 1.5
(17.5) 1.2
(17)
1.2
(16)
1.2
(15)
1.2
(14)
250 Hz
65.5 Hz
47
(15.5)
29
(15.5)
15
(15.5) 7.5
(15.5) 4.7
(15)
2.6
(15)
2.5
(14)
1.6
(13.5)
500 Hz
131 Hz
300
(13.5)
171
(13)
74
(13)
35
(13)
21
(13)
8.6
(13)
5.6
(13)
3.1
(12.5)
1 kHz
262 Hz
1722 (10.5)
735
(10.5)
380 (10.5) 230 (10.5) 93
(10.5) 55
(10.5) 30
(10.5) 12
(10.5)
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