- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374040 > ADUC848BS62-3 (ANALOG DEVICES INC) 10-825944-010 PDF資料下載
參數(shù)資料
| 型號(hào)： | ADUC848BS62-3 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 10-825944-010 |
| 中文描述： | 8-BIT, FLASH, 12.58 MHz, MICROCONTROLLER, PQFP52 |
| 封裝： | 14 X 14 MM, PLASTIC, MO-112-AC-1, MQFP-52 |
| 文件頁(yè)數(shù)： | 32/108頁(yè) |
| 文件大小： | 1109K |
| 代理商： | ADUC848BS62-3 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)當(dāng)前第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)
ADuC845/ADuC847/ADuC848
AUXILIARY ADC (ADUC845 ONLY)
Table 18. ADuC845 Typical Output RMS Noise (μV) vs.
Update Rate with Chop Enabled
SF Word
Data Update Rate (Hz)
13
105.03
23
59.36
27
50.56
69
19.79
255
5.35
Rev. A | Page 32 of 108
μV
17.46
3.13
4.56
2.66
1.13
Table 19. ADuC845 Typical Peak-to-Peak Resolution (Bits) vs.
Update Rate
1
with Chop Enabled
SF Word
Data Update Rate (Hz)
13
105.03
23
59.36
27
50.56
69
19.79
255
5.35
Bits
15.5
18
17.5
18
19.5
1
ADC converting in bipolar mode.
Table 20. ADuC845 Typical Output RMS Noise (μV) vs.
Update Rate with Chop Disabled
SF Word
Data Update Rate (Hz)
3
1365.33
13
315.08
66
62.06
69
59.36
81
50.57
255
16.06
μV
1386.58
34.94
3.2
3.19
3.14
1.71
Table 21. ADuC845 Peak-to-Peak Resolution (Bits) vs.
Update Rate with Chop Disabled
SF Word
Data Update Rate (Hz)
3
1365.33
13
315.08
66
62.06
69
59.36
81
50.57
255
16.06
REFERENCE INPUTS
The ADuC845/ADuC847/ADuC848 each have two separate
differential reference inputs, REFIN± and REFIN2±. While both
references are available for use with the primary ADC, only
REFIN± is available for the auxiliary ADC (ADuC845 only).
The common-mode range for these differential references is
from AGND to AV
DD
. The nominal external reference voltage is
2.5 V, with the primary and auxiliary (ADuC845 only)
reference
select bits configured from the ADC0CON2 and ADC1CON
(ADuC845 only), respectively.
Bits
9
14.5
18
18
18
19
When an external reference voltage is used, the primary ADC
sees this internally as a 2.56 V reference (V
REF
× 1.024).
Therefore, any calculations of LSB size should account for this.
For instance, with a 2.5 V external reference connected and
using a gain of 1 on a unipolar range (2.56 V), the LSB size is
(2.56/2
24
) = 152.6 nV (if using the 24-bit ADC on the ADuC845
or ADuC847). If a bipolar gain of 4 is used (±640 mV), the LSB
size is (±640 mV)/2
24
) = 76.3 nV (again using the 24-bit ADC
on the ADuC845 or ADuC847).
The ADuC845/ADuC847/ADuC848 can also be configured to
use the on-chip band gap reference via the XREF0/1 bits in the
ADC0CON2 SFR (for primary ADC) or the AXREF bit in
ADC1CON (for auxiliary ADC (ADuC845 only)). In this mode
of operation, the ADC sees the internal reference of 1.25 V,
thereby halving all the input ranges. A consequence of using the
internal band gap reference is a noticeable degradation in peak-
to-peak resolution. For this reason, operation with an external
reference is recommended.
In applications where the excitation (voltage or current) for the
transducer on the analog input also drives the reference inputs
for the part, the effect of any low frequency noise in the
excitation source is removed because the application is ratio-
metric. If the parts are not used in a ratiometric configuration, a
low noise reference should be used. Recommended reference
voltage sources for the ADuC845/ADuC847/ADuC848 include
ADR421, REF43, and REF192.
The reference inputs provide a high impedance, dynamic load
to external connections. Because the impedance of each reference
input is dynamic, resistor/capacitor combinations on these pins
can cause dc gain errors, depending on the output impedance of
the source that is driving the reference inputs. Reference voltage
sources, such as those mentioned above, for example, the ADR421,
typically have low output impedances, and, therefore, decoupling
capacitors on the REFIN± or REFIN2± inputs would be recom-
mended (typically 0.1 μF). Deriving the reference voltage from
an external resistor configuration means that the reference input
sees a significant external source impedance. External decoupling
of the REFIN± and/or REFIN2± inputs is not recommended in
this type of configuration.
BURNOUT CURRENT SOURCES
The primary ADC on the ADuC845 and the ADC on the
ADuC847 and ADuC848 incorporate two 200 μA constant
current generators, one sourcing current from the AV
DD
to
AIN(+), and one sinking current from AIN(
) to AGND. These
currents are only configurable for use on AIN4 to AIN5 and/or
AIN6 to AIN7 in differential mode only, from the ICON.6 bit in
the ICON SFR (see Table 30). These burnout current sources are
also available only with buffering enabled via the BUF0/BUF1 bits
in the ADC0CON1 SFR. Once the burnout currents are turned
on, a current flows in the external transducer circuit, and a
measurement of the input voltage on the analog input channel
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADUC848BS62-5 | MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
| ADUC848BS8-3 | MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
| ADUC848BS8-5 | MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
| ADUC845 | MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
| ADUC845BCP8-3 | MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADUC848BS62-5 | 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 |
| ADUC848BS8-3 | 制造商:Analog Devices 功能描述: |
| ADUC848BS8-5 | 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:Analog Devices 功能描述:IC MICROCONTROLLER |
| ADUC848BSZ32-3 | 功能描述:IC MCU FLASH W/16BIT ADC 52MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標(biāo)準(zhǔn)包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:4KB（4K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
| ADUC848BSZ32-5 | 功能描述:IC MCU FLASH W/16BIT ADC 52MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標(biāo)準(zhǔn)包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:4KB（4K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。