參數(shù)資料
型號: ADUC834BS
廠商: ANALOG DEVICES INC
元件分類: 微控制器/微處理器
英文描述: MicroConverter, Dual 16-/24- Bit ADCs with Embedded 62KB FLASH MCU
中文描述: 8-BIT, FLASH, 12.58 MHz, MICROCONTROLLER, PQFP52
封裝: 14 X 14 MM, MO-022-AC-1, MQFP-52
文件頁數(shù): 30/72頁
文件大?。?/td> 1451K
代理商: ADUC834BS
(12 March 2002) REV.
P
rC
ADuC834
30
PRELIMINARY TECHNICAL DATA
T able X . Primary ADC, T ypical Output RMS Noise ( V)
T ypical Output RMS Noise vs. Input Range and Update Rate; Output RMS Noise in V
SF
Word
Data Update
Rate (Hz)
Input Range
160 mV
20 mV
40 mV
80 mV
320 mV
640 mV
±1.28 V
±2.56 V
13
69
255
105.3
19.79
5.35
1.50
0.60
0.35
1.50
0.65
0.35
1.60
0.65
0.37
1.75
0.65
0.37
3.50
0.65
0.37
4.50
0.95
0.51
6.70
1.40
0.82
11.75
2.30
1.25
T able X I. Primary ADC, Peak-to-Peak Resolution (Bits)
Peak-to-Peak Resolution vs. Input Range and Update Rate; Peak-to-Peak Resolution in Bits
SF
Word
Data Update
Rate (Hz)
Input Range
160 mV
20 mV
40 mV
80 mV
320 mV
640 mV
1.28 V
2.56 V
13
69
255
105.3
19.79
5.35
12
13
14
13
14
15
14
15
16
15
16
17
15
17
18
15.5
17.5
18.5
16
18
18.8
16
18.5
19.2
T able X II. Auxiliary ADC
T ypical Output RMS Noise vs. Update Rate
1
Output RMS Noise in V
SF
Word
Data
Update
R
ate (Hz)
Input Range
2.5 V
13
69
255
105.3
19.79
5.35
10.75
2.00
1.15
NOT E
1
ADC converting in bipolar mode.
Peak-to-Peak Resolution vs. Update Rate
1
Peak-to-Peak Resolution in Bits
SF
Word
Data Update
Rate (Hz)
Input Range
2.5 V
16
2
16
16
13
69
255
105.3
19.79
5.35
NOT ES
1
ADC converting in bipolar mode.
2
In unipolar mode peak-to-peak resolution at 105 Hz is 15 bits.
PRIMARY AND AUX IL IARY AD C NOISE
PE RFORMANC E
T ables X , X I and X II below show the output rms noise in μV
and output peak-to-peak resolution in bits (rounded to the
nearest 0.5 LSB) for some typical output update rates on both
the Primary and Auxiliary ADCs. T he numbers are typical and
are generated at a differential input voltage of 0V. T he output
update rate is selected via the Sinc Filter (SF) SFR. It is impor-
tant to note that the peak-to-peak resolution figures represent
the resolution for which there will be no code flicker within a
six-sigma limit.
T he QuickStart Development system PC software comes com-
plete with an ADC noise evaluation tool. T his tool can be
easily used with the evalustion board to see these figures from
silicon.
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