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| 型号： | ADUC845BCPZ8-3 |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 12.58 MHz, MICROCONTROLLER, QCC56 |
| 封装： | 8 X 8 MM, LEAD FREE, MO-220-VLLD-2, LFCSP-56 |
| 文件页数： | 31/108页 |
| 文件大小： | 1940K |
| 代理商： | ADUC845BCPZ8-3 |
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ADuC845/ADuC847/ADuC848
Rev. B | Page 29 of 108
ADC Noise Performance with Chop Enabled (CHOP = 0)
Table 10, Table 11, Table 12, and Table 13 show the output rm
noise and output peak-to-peak resolution in bits (rounded to
the nearest 0.5 LSB) for some typical output update rates for th
ADuC845, ADuC847, and ADuC848. The numbers are typica
and are generated at a differential input voltage of 0 V and a
common-mode voltage of 2.5 V. The output update rate is
selected via the SF7 to SF0 bits in the SF filter register. It is
important to note that the peak-to-peak resolution figures
represent the resolution for which there is no code flicker
within a 6-sigma limit.
The outp
s
e
l
ut noise comes from two sources. The first source is
the electrical noise in the semic
uctor devices (device noise)
ges.
ges, the rms noise numbers are in the same
Table 10. ADuC845 and ADuC847 Typical Output RMS Noise (V) vs. Input Range and Update Rate with Chop Enabled
Input Range
ond
used in the implementation of the modulator. The second
source is quantization noise, which is added when the analog
input is converted to the digital domain. The device noise is at a
low level and is independent of frequency. The quantization
noise starts at an even lower level but rises rapidly with increasing
frequency to become the dominant noise source.
The numbers in the tables are given for the bipolar input ran
For the unipolar ran
range as the bipolar figures, but the peak-to-peak resolution is
based on half the signal range, which effectively means losing
1 bit of resolution.
SF Word
Data Update Rate (Hz)
V
±640 mV
±1.28 V
±2.56 V
±20 mV
±40 mV
±80 mV
±160 mV
±320 m
13
105.03
1.75
1.30
1.65
1.5
2.1
3.1
7.15
13.3
23
59.36
1.25
0.95
1.08
0.94
1.0
1.87
3.24
7.1
27
50.56
1.0
0.85
1.13
1.56
2.9
3.6
69
19.79
0.63
0.68
0.52
0.7
0.61
1.1
1.3
2.75
255
5.35
0.31
0.38
0.34
0.32
0.4
0.45
0.68
1.22
Table 11. ADuC845 and ADuC847 Typical Peak-to-Peak Resolution (Bits) vs. Input Range and Update Rate with Chop Enabled
Input Range
SF Word
Data Update Rate (Hz)
±20 mV
±40 mV
±80 mV
±160 mV
±320 mV
±640 mV
±1.28 V
±2.56 V
13
105.03
12
13
14
15
15.5
16
23
59.36
12
13.5
14.5
15.5
16.5
17
16.5
27
50.56
12.5
13.5
15
16
16.5
17
17.5
69
19.79
13
14
15.5
16
17.5
18
255
5.35
14.5
15
16
17
18
18.5
19
19.5
Table 12. ADuC848 Typical Output Noise (V) vs. Input Range and Update Rate with Chop Enabled
Input Range
SF Word
Data Update Rate (Hz)
±20 mV
±40 mV
±80 mV
±160 mV
±320 mV
±640 mV
±1.28 V
±2.56 V
13
105.03
1.75
1.30
1.65
1.5
2.1
3.1
7.15
13.3
23
59.36
1.25
0.95
1.08
0.94
1.0
1.87
3.24
7.1
27
50.56
1.0
0.85
1.13
1.56
2.9
3.6
69
19.79
0.63
0.68
0.52
0.7
0.61
1.1
1.3
2.75
255
5.35
0.31
0.38
0.34
0.32
0.4
0.45
0.68
1.22
Table 13. ADuC848 Typical Peak-to-Peak Resolution (Bits) vs. Input Range and Update Rate with Chop Enabled
Input Range
SF Word
Data Update Rate (Hz)
±20 mV
±40 mV
±80 mV
±160 mV
±320 mV
±640 mV
±1.28 V
±2.56 V
13
105.03
12
13
14
15
15.5
16
23
59.36
12
13.5
14.5
15.5
16
17
16
27
50.56
12.5
13.5
15
16
69
19.79
13
14
15.5
16
255
5.35
14.5
15
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADUC845BCPZ8-5 | 功能描述:IC MCU FLASH 24BIT ADC 56LFCSP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA，UART/USART 外围设备:欠压检测/复位，LED，POR，PWM，WDT 输入/输出数:16 程序存储器容量:4KB（4K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND |
| ADUC845BS62-3 | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 62KB Flash 3.3V/5V 52-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 62KB FLASH 12.85MHZ 3.3V 52MQFP - Bulk |
| ADUC845BS62-5 | 制造商:Analog Devices 功能描述:MCU 8-bit ADuC8xx 8052 CISC 62KB Flash 3.3V/5V 52-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 62KB FLASH 12.85MHZ 5V 52MQFP - Bulk 制造商:Analog Devices 功能描述:IC MICROCONTROLLER |
| ADUC845BS8-3 | 制造商:Analog Devices 功能描述: |
| ADUC845BS8-5 | 制造商:Analog Devices 功能描述:MCU 8-bit ADuC8xx 8052 CISC 62KB Flash 3.3V/5V 52-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 62KB FLASH 12.85MHZ 5V 52MQFP - Bulk |
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