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| 型号： | EVAL-AD7785EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 4/32页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD7785 |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 20 |
| 采样率（每秒）： | 470 |
| 数据接口： | 串行 |
| 输入范围： | ±VREF |
| 工作温度： | -40°C ~ 105°C |
| 已用 IC / 零件： | AD7785 |
| 已供物品： | 板，缆线，CD |
| 相关产品： | AD7785BRUZ-REEL-ND - IC ADC 20BIT 3CH LN LP 16-TSSOP AD7785BRUZ-ND - IC ADC 20BIT SIGMA-DELTA 16TSSOP |
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AD7785
Rev. 0 | Page 12 of 32
INTERNAL REFERENCE
Table 7 shows the output rms noise of the AD7785 for some of
the update rates and gain settings. The numbers given are for
the bipolar input range with the internal 1.17 V reference. These
numbers are typical and are generated with a differential input
voltage of 0 V. Table 8 shows the effective resolution, with the
output peak-to-peak (p-p) resolution given in parentheses. It is
important to note that the effective resolution is calculated
using the rms noise, while the p-p resolution is calculated based
on p-p noise. The p-p resolution represents the resolution for
which there is no code flicker. These numbers are typical and
are rounded to the nearest LSB.
Table 7. Output RMS Noise (μV) vs. Gain and Output Update Rate Using the Internal Reference
Update Rate (Hz)
Gain of 1
Gain of 2
Gain of 4
Gain of 8
Gain of 16
Gain of 32
Gain of 64
Gain of 128
4.17
0.81
0.67
0.32
0.2
0.13
0.065
0.04
0.039
8.33
1.18
1.11
0.41
0.25
0.16
0.078
0.058
0.059
16.7
1.96
1.72
0.55
0.36
0.25
0.11
0.088
33.2
2.99
2.48
0.83
0.48
0.33
0.17
0.13
0.12
62
3.6
3.25
1.03
0.65
0.46
0.2
0.15
123
5.83
5.01
1.69
0.96
0.67
0.32
0.25
0.26
242
11.22
8.64
2.69
1.9
1.04
0.45
0.35
0.34
470
12.46
10.58
4.58
2
1.27
0.63
0.50
0.49
Table 8. Typical Resolution (Bits) vs. Gain and Output Update Rate Using the Internal Reference
Update Rate (Hz)
Gain of 1
Gain of 2
Gain of 4
Gain of 8
Gain of 16
Gain of 32
Gain of 64
Gain of 128
4.17
20 (19)
20.5 (18)
20 (18.5)
20.5 (18)
20 (17.5)
19 (16.5)
8.33
20 (18.5)
20 (17.5)
20.5 (18)
20 (17.5)
19 (16.5)
18 (15.5)
16.7
20 (17.5)
19.5 (17)
20 (17.5)
19.5 (17)
19 (16.5)
19.5 (17)
18.5 (16)
17.5 (15)
33.2
19.5 (17)
19 (16.5)
19.5 (17)
19 (16.5)
18.5 (16)
18 (15.5)
17 (14.5)
62
19.5 (17)
18.5 (16)
19 (16.5)
18.5 (16)
18 (15.5)
17 (14.5)
123
18.5 (16)
18 (15.5)
18.5 (16)
18 (15.5)
17.5 (15)
18 (15.5)
17 (14.5)
16 (13.5)
242
17.5 (15)
17 (14.5)
17.5 (15)
17 (14.5)
17.5 (15)
16.5 (14)
15.5 (13)
470
17.5 (15)
17 (14.5)
16 (13.5)
15 (12.5)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-AD7787CB | 制造商:Analog Devices 功能描述:DEVELOPMENT BOARD ((NS)) |
| EVAL-AD7787EB | 制造商:Analog Devices 功能描述:LOW PWR, 2CH 24BIT SIGMA-DELTA ADC - Bulk |
| EVAL-AD7788EB | 制造商:Analog Devices 功能描述:Development Tools, Low Power, 16/24Bit Sigma-Delta ADC 制造商:Analog Devices 功能描述:DEV TOOLS, LOW PWR, 16/24BIT SIGMA-DELTA ADC - Bulk |
| EVAL-AD7789EB | 制造商:Analog Devices 功能描述:DEV TOOLS, LOW PWR, 16/24BIT SIGMA-DELTA ADC - Bulk |
| EVAL-AD7790EB | 制造商:Analog Devices 功能描述:Development Tools, Low Power, 16/24Bit Sigma-Delta ADC 制造商:Analog Devices 功能描述:DEV TOOLS, LOW PWR, 16/24BIT SIGMA-DELTA ADC - Bulk |
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