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ADUC7021BCPZ62 Datasheet(PDF) 10 Page - Analog Devices

No. de pieza ADUC7021BCPZ62
Descripción Electrónicos  Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI MCU
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

ADUC7021BCPZ62 Datasheet(HTML) 10 Page - Analog Devices

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ADuC7019/20/21/22/24/25/26/27/28/29
Data Sheet
Rev. F | Page 10 of 104
SPECIFICATIONS
AVDD = IOVDD = 2.7 V to 3.6 V, VREF = 2.5 V internal reference, fCORE = 41.78 MHz, TA = −40°C to +125°C, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
ADC CHANNEL SPECIFICATIONS
Eight acquisition clocks and fADC/2
ADC Power-Up Time
5
μs
DC Accuracy1, 2
Resolution
12
Bits
Integral Nonlinearity
±0.6
±1.5
LSB
2.5 V internal reference
±1.0
LSB
1.0 V external reference
Differential Nonlinearity3, 4
±0.5
+1/−0.9
LSB
2.5 V internal reference
+0.7/−0.6
LSB
1.0 V external reference
DC Code Distribution
1
LSB
ADC input is a dc voltage
ENDPOINT ERRORS5
Offset Error
±1
±2
LSB
Offset Error Match
±1
LSB
Gain Error
±2
±5
LSB
Gain Error Match
±1
LSB
DYNAMIC PERFORMANCE
fIN = 10 kHz sine wave, fSAMPLE = 1 MSPS
Signal-to-Noise Ratio (SNR)
69
dB
Includes distortion and noise components
Total Harmonic Distortion (THD)
−78
dB
Peak Harmonic or Spurious Noise
(PHSN)
−75
dB
Channel-to-Channel Crosstalk
−80
dB
Measured on adjacent channels
ANALOG INPUT
Input Voltage Ranges
Differential Mode
VCM6 ± VREF/2
V
Single-Ended Mode
0 to VREF
V
Leakage Current
±1
±6
µA
Input Capacitance
20
pF
During ADC acquisition
ON-CHIP VOLTAGE REFERENCE
0.47 µF from VREF to AGND
Output Voltage
2.5
V
Accuracy
±5
mV
TA = 25°C
Reference Temperature Coefficient
±40
ppm/°C
Power Supply Rejection Ratio
75
dB
Output Impedance
70
TA = 25°C
Internal VREF Power-On Time
1
ms
EXTERNAL REFERENCE INPUT
Input Voltage Range
0.625
AVDD
V
DAC CHANNEL SPECIFICATIONS
RL = 5 kΩ, CL = 100 pF
DC Accuracy7
Resolution
12
Bits
Relative Accuracy
±2
LSB
Differential Nonlinearity
±1
LSB
Guaranteed monotonic
Offset Error
±15
mV
2.5 V internal reference
Gain Error8
±1
%
Gain Error Mismatch
0.1
%
% of full scale on DAC0
ANALOG OUTPUTS
Output Voltage Range_0
0 to DACREF
V
DACREF range: DACGND to DACVDD
Output Voltage Range_1
0 to 2.5
V
Output Voltage Range_2
0 to DACVDD
V
Output Impedance
2


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