參數(shù)資料
型號(hào)： USB-EA-CONVZ
廠商： Analog Devices Inc
文件頁數(shù)： 34/68頁
文件大?。?/td> 0K
描述： SUPPORT BOARD ADUC8XX
標(biāo)準(zhǔn)包裝： 1
類型： 仿真器
適用于相關(guān)產(chǎn)品： ADuC8xx
所含物品： 模塊
REV. B
–4–
ADuC824
Parameter
ADuC824BS
Test Conditions/Comments
Unit
INTERNAL REFERENCE
ADC Reference
Reference Voltage
1.25
± 1%
Initial Tolerance @ 25
°C, V
DD = 5 V
V min/max
Power Supply Rejection
45
dBs typ
Reference Tempco
100
ppm/
°C typ
DAC Reference
Reference Voltage
2.5
± 1%
Initial Tolerance @ 25
°C, VDD = 5 V
V min/max
Power Supply Rejection
50
dBs typ
Reference Tempco
±100
ppm/
°C typ
ANALOG INPUTS/REFERENCE INPUTS
Primary ADC
Differential Input Voltage Ranges
9, 10
External Reference Voltage = 2.5 V
RN2, RN1, RN0 of ADC0CON Set to
Bipolar Mode (ADC0CON3 = 0)
±20
0 0 0
(Unipolar Mode 0 to 20 mV)
mV
±40
0 0 1
(Unipolar Mode 0 to 40 mV)
mV
±80
0 1 0
(Unipolar Mode 0 to 80 mV)
mV
±160
0 1 1
(Unipolar Mode 0 to 160 mV)
mV
±320
1 0 0
(Unipolar Mode 0 to 320 mV)
mV
±640
1 0 1
(Unipolar Mode 0 to 640 mV)
mV
±1.28
1 1 0
(Unipolar Mode 0 to 1.28 V)
V
±2.56
1 1 1
(Unipolar Mode 0 to 2.56 V)
V
Analog Input Current
2
±1
nA max
Analog Input Current Drift
±5pA/°C typ
Absolute AIN Voltage Limits
AGND + 100 mV
V min
AVDD – 100 mV
V max
Auxiliary ADC
Input Voltage Range
9, 10
0 to VREF
Unipolar Mode, for Bipolar Mode
V
See Note 11
Average Analog Input Current
125
Input Current Will Vary with Input
nA/V typ
Average Analog Input Current Drift
2
±2
Voltage on the Unbuffered Auxiliary ADC
pA/V/
°C typ
Absolute AIN Voltage Limits
11
AGND – 30 mV
V min
AVDD + 30 mV
V max
External Reference Inputs
REFIN(+) to REFIN(–) Range
2
1V min
AVDD
V max
Average Reference Input Current
1
Both ADCs Enabled
A/V typ
Average Reference Input Current Drift
±0.1
nA/V/
°C typ
‘NO Ext. REF’ Trigger Voltage
0.3
NOXREF Bit Active if VREF < 0.3 V
V min
0.65
NOXREF Bit Inactive if VREF > 0.65 V
V max
ADC SYSTEM CALIBRATION
Full-Scale Calibration Limit
+1.05
× FS
V max
Zero-Scale Calibration Limit
–1.05
× FS
V min
Input Span
+0.8
× FS
V min
+2.1
× FS
V max
ANALOG (DAC) OUTPUTS
Voltage Range
0 to VREF
DACRN = 0 in DACCON SFR
V typ
0 to AVDD
DACRN = 1 in DACCON SFR
V typ
Resistive Load
10
From DAC Output to AGND
k
typ
Capacitive Load
100
From DAC Output to AGND
pF typ
Output Impedance
0.5
typ
ISINK
50
A typ
TEMPERATURE SENSOR
Accuracy
±2
°C typ
Thermal Impedance (
θJA)90
°C/W typ
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