AVDD = 2.7 V " />
參數(shù)資料
型號: ADUC847BSZ8-5
廠商: Analog Devices Inc
文件頁數(shù): 43/108頁
文件大?。?/td> 0K
描述: IC MCU FLASH W/24BIT ADC 52MQFP
標準包裝: 1
系列: MicroConverter® ADuC8xx
核心處理器: 8052
芯體尺寸: 8-位
速度: 12.58MHz
連通性: I²C,SPI,UART/USART
外圍設(shè)備: POR,PSM,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 34
程序存儲器容量: 8KB(8K x 8)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 4K x 8
RAM 容量: 2.25K x 8
電壓 - 電源 (Vcc/Vdd): 4.75 V ~ 5.25 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 10x24b; D/A 1x12b,2x16b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 125°C
封裝/外殼: 52-QFP
包裝: 托盤
配用: EVAL-ADUC847QSZ-ND - KIT DEV QUICK START FOR ADUC847
ADuC845/ADuC847/ADuC848
Data Sheet
Rev. C | Page 4 of 108
SPECIFICATIONS1
AVDD = 2.7 V to 3.6 V or 4.75 V to 5.25 V, DVDD = 2.7 V to 3.6 V or 4.75 V to 5.25 V, REFIN(+) = 2.5 V, REFIN(–) = AGND; AGND =
DGND = 0 V; XTAL1/XTAL2 = 32.768 kHz crystal; all specifications TMIN to TMAX, unless otherwise noted. Input buffer on for primary
ADC, unless otherwise noted. Core speed = 1.57 MHz (default CD = 3), unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Conditions
PRIMARY ADC
Conversion Rate
5.4
105
Hz
Chop on (ADCMODE.3 = 0)
16.06
1365
Hz
Chop off (ADCMODE.3 = 1)
No Missing Codes2
24
Bits
≤26.7 Hz update rate with chop enabled
24
Bits
≤80.3 Hz update rate with chop disabled
Resolution (ADuC845/ADuC847)
Resolution (ADuC848)
Output Noise (ADuC845/ADuC847)
μV (rms)
Output noise varies with selected update rates,
gain range, and chop status.
Output Noise (ADuC848)
μV (rms)
Output noise varies with selected update rates,
gain range, and chop status.
Integral Nonlinearity
±15
ppm of FSR
1 LSB16
Offset Error3
±3
μV
Chop on
Chop off, offset error is in the order of the noise
for the programmed gain and update rate
following a calibration.
Offset Error Drift vs. Temperature2
±10
nV/°C
Chop on (ADCMODE.3 = 0)
±200
nV/°C
Chop off (ADCMODE.3 = 1)
Full-Scale Error4
ADuC845/ADuC847
±10
μV
±20 mV to ±2.56 V
ADuC848
±10
μV
±20 mV to ±640 mV
±0.5
LSB16
±1.28 V to ±2.56 V
Gain Error Drift vs. Temperature4
±0.5
ppm/°C
Power Supply Rejection
80
dB
AIN = 1 V, ±2.56 V, chop enabled
113
dB
AIN = 7.8 mV, ±20 mV, chop enabled
80
dB
AIN = 1 V, ±2.56 V, chop disabled2
PRIMARY ADC ANALOG INPUTS
Differential Input Voltage Ranges 5, 6
Gain = 1 to 128
Bipolar Mode (ADC0CON1.5 = 0)
±1.024 ×
VREF/GAIN
V
VREF = REFIN(+) REFIN() or
REFIN2(+) REFIN2() (or Int 1.25 VREF)
Unipolar Mode (ADC0CON1.5 = 1)
0 – 1.024 ×
VREF/GAIN
V
VREF = REFIN(+) REFIN() or
REFIN2(+) REFIN2() (or Int 1.25 VREF)
ADC Range Matching
±2
μV
AIN = 18 mV, chop enabled
Common-Mode Rejection DC
Chop enabled, chop disabled
On AIN
95
dB
AIN = 7.8 mV, range = ±20 mV
113
dB
AIN = 1 V, range = ±2.56 V
Common-Mode Rejection
50 Hz/60 Hz2
50 Hz/60 Hz ± 1 Hz, 16.6 Hz and 50 Hz update
rate, chop enabled, REJ60 enabled
On AIN
95
dB
AIN = 7.8 mV, range = ±20 mV
90
dB
AIN = 1 V, range = ±2.56 V
Footnotes at end of table.
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