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參數(shù)資料
| 型號： | ADUC845 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | ADC |
| 英文描述： | MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
| 中文描述： | MicroConverter的多通道ADC的24-/16-Bit與嵌入式62 kB閃存以及單周期控制器 |
| 文件頁數(shù)： | 4/108頁 |
| 文件大小： | 1109K |
| 代理商： | ADUC845 |
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ADuC845/ADuC847/ADuC848
SPECIFICATIONS
1
AV
DD
= 2.7 V to 3.6 V or 4.75 V to 5.25 V, DV
DD
= 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 T
MIN
to T
MAX
, 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
PRIMARY ADC
Conversion Rate
5.4
105
16.06
1365
No Missing Codes
2
24
24
Resolution (ADuC845/ADuC847)
See Table 11 and Table 15
Resolution (ADuC848)
See Table 13 and Table 17
Output Noise (ADuC845/ADuC847)
See Table 10 and Table 14
Rev. A | Page 4 of 108
Unit
Hz
Hz
Bits
Bits
μV (rms)
Conditions
Chop on (ADCMODE.3 = 0)
Chop off (ADCMODE.3 = 1)
≤26.7 Hz update rate with chop enabled
≤80.3 Hz update rate with chop disabled
Output noise varies with selected update rates,
gain range, and chop status.
Output noise varies with selected update rates,
gain range and chop status.
1 LSB
16
Chop on
Chop off, offset error is in the order of the noise
for the programmed gain and update rate
following a calibration.
Chop on (ADCMODE.3 = 0)
Chop off (ADCMODE.3 = 1)
±20 mV to ±2.56 V
±20 mV to ±640 mV
±1.28 V to ±2.56 V
AIN = 1 V, ±2.56 V, chop enabled
AIN = 7.8 mV, ±20 mV, chop enabled
AIN = 1 V, ±2.56 V, chop disabled
2
Gain = 1 to 128
V
REF
= REFIN(+) REFIN() or
REFIN2(+) REFIN2() (or Int 1.25 V
REF
)
V
REF
= REFIN(+) REFIN() or
REFIN2(+) REFIN2() (or Int 1.25 V
REF
)
AIN = 18 mV, chop enabled
Chop enabled, chop disabled
AIN = 7.8 mV, range = ±20 mV
AIN = 1 V, range = ±2.56 V
50 Hz/60 Hz ± 1 Hz, 16.6 Hz and 50 Hz update
rate, chop enabled, REJ60 enabled
AIN = 7.8 mV, range = ±20 mV
AIN = 1 V, range = ±2.56 V
Output Noise (ADuC848)
See Table 12 and Table 16
μV (rms)
Integral Nonlinearity
Offset Error
3
±3
±15
ppm of FSR
μV
Offset Error Drift vs. Temperature
2
Full-Scale Error
4
ADuC845/ADuC847
ADuC848
Gain Error Drift vs. Temperature
4
Power Supply Rejection
80
±10
±200
±10
±10
±0.5
±0.5
113
80
±1.024 ×
V
REF
/GAIN
0 – 1.024 ×
V
REF
/GAIN
±2
113
nV/°C
nV/°C
μV
μV
LSB
16
ppm/°C
dB
dB
dB
V
PRIMARY ADC ANALOG INPUTS
Differential Input Voltage Ranges
5, 6
Bipolar Mode (ADC0CON1.5 = 0)
Unipolar Mode (ADC0CON1.5 = 1)
V
ADC Range Matching
Common-Mode Rejection DC
On AIN
Common-Mode Rejection
50 Hz/60 Hz
2
On AIN
Footnotes at end of table.
95
μV
dB
dB
95
90
dB
dB
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