參數(shù)資料
型號(hào): ADUC824BS
廠商: ANALOG DEVICES INC
元件分類(lèi): 微控制器/微處理器
英文描述: MicroConverter, Dual-Channel 16-/24-Bit ADCs with Embedded FLASH MCU
中文描述: 8-BIT, FLASH, 12.58 MHz, MICROCONTROLLER, PQFP52
封裝: PLASTIC, MQFP-52
文件頁(yè)數(shù): 32/68頁(yè)
文件大小: 1060K
代理商: ADUC824BS
REV. B
ADuC824
–32–
Auxiliary ADC
The Auxiliary ADC is intended to convert supplementary inputs
such as those from a cold junction diode or thermistor. This ADC
is not buffered and has a fixed input range of 0 V to 2.5 V
AIN3
AIN4
AIN5
TEMPSENSOR
MODULATOR
PRODIGITAL
FILTER
SIGMA-DELTA A/D CONVERTER
REFIN(
)
REFIN(+)
CHOP
OUTPUT
OUTPUT
SCALING
DIGTAL OUTPUT
CHOP
DIFFERENTIAL REFERENCE
TAND FACILITATES RATIOMETRIC
RVIA THE XREF1 BIT IN ADC1CON.
SHORTED REFERENCES INPUTS
SEE PAGE 35
HIGH FREQUENCY 1-BIT DATA
STIS ALSO CHOPPED) TO THE
DIGITAL FILTER,
THE DUTY CYCLE OF WHICH
ANALOG INPUT VOLTAGE
SIGMA DELTA
MODULATOR
SEE PAGE 35
PROGRAMMABLE DIGITAL
FILTER
BY THE MODULATOR. THE UPDATE
FILTER ARE PROGRAMMABLE
VIA THE SF SFR
SEE PAGE 35
OUTPUT AVERAGE
AIMPLEMENTATION EACH
FROM THE FILTER IS
WITH ITS PREDECESSOR
TO OFFSET ERRORS
SEE PAGE 36
SIGMA-DELTA ADC
AR16 BITS NO MISSING
CODES. THE ENTIRE
CHOPPEDERRORS
SEE PAGE 35
THE THE CALIBRATION
CBEING PROVIDED AS
THE CONVERSION RESULT
OUTPUT SCALING
SEE PAGE 37
ANALOG INPUT CHOPPING
THREVERSED THROUGH THE
CONVERSION CYCLE. CHOPPING
OYIELPERFORMANCE
SEE PAGE 36
ANALOG MULTIPLEXER
A DIFFERENTIAL MULTIPLEXER
OR THE ON-CHIP TEMP. SENSOR.
THVIA THE CHANNEL SELECTION
BITS IN ADC1CON
SEE PAGES 28 AND 33
MUX
Figure 19. Auxiliary ADC Block Diagram
(assuming an external 2.5 V reference). The single-ended inputs
can be driven from AIN3, AIN4, or AIN5 pins or directly from
the on-chip temperature sensor voltage. A block diagram of the
Auxiliary ADC is shown in Figure 19.
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