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      參數(shù)資料
      

      


      


      
型號(hào)：
ADUC848BS8-3

      

      
廠商：
ANALOG DEVICES INC

      

      
元件分類：
微控制器/微處理器

      

      
英文描述：
MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU

      

      
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?。?/td>
1109K

      

      
代理商：
ADUC848BS8-3


      

      

      

	
      
    
    

    
      
	
      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
      		

      
      

      
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

      

      
ADUC847BCP8-3
MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU

      

      
ADUC845BCP8-5
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
      		

      
      

      
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

      

      
ADUC848BSZ62-3
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

      

      
ADUC848BSZ62-5
功能描述:IC FLASH MCU 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:250 系列:LPC11Uxx 核心處理器:ARM? Cortex?-M0 芯體尺寸:32-位 速度:50MHz 連通性:I²C，Microwire，SPI，SSI，SSP，UART/USART，USB 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，POR，WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:96KB（96K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:4K x 8 RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):1.8 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:48-LQFP 包裝:托盤 其它名稱:568-9587

      

      
    
    
    
	
      	
    
    
     
     
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