参数资料
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: 65/108页
文件大小: 1940K
代理商: ADUC845BCPZ8-3
ADuC845/ADuC847/ADuC848
Rev. B | Page 6 of 108
Parameter
Min
Typ
Max
Unit
Conditions
AUXILIARY ADC ANALOG INPUTS
(ADuC845 Only)
Differential Input Voltage Ranges5, 6
Bipolar Mode (ADC1CON.5 = 0)
±VREF
V
REFIN = REFIN(+) REFIN() (or Int 1.25 VREF)
Unipolar Mode (ADC1CON.5 = 1)
0 – VREF
V
REFIN = REFIN(+) REFIN() (or Int 1.25 VREF)
Average Analog Input Current
125
nA/V
Analog Input Current Drift
±2
pA/V/°C
Absolute AIN/AINCOM Voltage
Limits2, 7
AGND
0.03
AVDD +
0.03
V
Normal Mode Rejection 50 Hz/60 Hz2
On AIN and REFIN
75
dB
50 Hz/60 Hz ± 1 Hz, 16.6 Hz Fadc, SF = 52H,
chop on, REJ60 on
100
dB
50 Hz ± 1 Hz, 16.6 Hz Fadc, SF = 52H, chop on
67
dB
50 Hz/60 Hz ± 1 Hz, 50 Hz Fadc, SF = 52H,
chop off, REJ60 on
100
dB
50 Hz ± 1 Hz, 50 Hz Fadc, SF = 52H, chop off
ADC SYSTEM CALIBRATION
Full-Scale Calibration Limit
+1.05 × FS
V
Zero-Scale Calibration Limit
1.05 × FS
V
Input Span
0.8 × FS
2.1 × FS
V
DAC
Voltage Range
0 – VREF
V
DACCON.2 = 0
0 – AVDD
V
DACCON.2 = 1
Resistive Load
10
k
From DAC output to AGND
Capactive Load
100
pF
From DAC output to AGND
Output Impedance
0.5
ISINK
50
A
DC Specifications8
Resolution
12
Bits
Relative Accuracy
±3
LSB
Differential Nonlinearity
1
LSB
Guaranteed 12-bit monotonic
Offset Error
±50
mV
Gain Error
±1
%
AVDD range
±1
%
VREF range
AC Specifications2, 8
Voltage Output Settling Time
15
s
Settling time to 1 LSB of final value
Digital-to-Analog Glitch Energy
10
nVs
1 LSB change at major carry
INTERNAL REFERENCE
ADC Reference
Chop enabled
Reference Voltage
1.25 1%
1.25
1.25 + 1%
V
Initial tolerance @ 25°C, VDD = 5 V
Power Supply Rejection
45
dB
Reference Tempco
100
ppm/°C
DAC Reference
Reference Voltage
2.5 – 1%
2.5
2.5 + 1%
±1% V
Initial tolerance @ 25°C, VDD = 5 V
Power Supply Rejection
50
dB
Reference Tempco
±100
ppm/°C
TEMPERATURE SENSOR
(ADuC845 Only)
Accuracy
±2
°C
Thermal Impedance
90
°C/W
MQFP
52
°C/W
LFCSP
Footnotes at end of table.
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