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ADUC831 Datasheet(PDF) 3 Page - Analog Devices

Part # ADUC831
Description  MicroConverter, 12-Bit ADCs and DACs with Embedded 62 kBytes Flash MCU
Download  76 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADUC831 Datasheet(HTML) 3 Page - Analog Devices

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REV. 0
–3–
Parameter
VDD = 5 V
VDD = 3 V
Unit
Test Conditions/Comments
ADC CHANNEL SPECIFICATIONS
DC ACCURACY
2, 3
fSAMPLE = 147 kHz, see Page 11 for
Typical Performance at other fSAMPLE
Resolution
12
12
Bits
Integral Nonlinearity
±1
±1LSB max
2.5 V Internal Reference
±0.3
±0.3
LSB typ
Differential Nonlinearity
±0.9
±0.9
LSB max
2.5 V Internal Reference
±0.25
±0.25
LSB typ
Integral Nonlinearity
4
±1.5
±1.5
LSB max
1 V External Reference
Differential Nonlinearity
4
+1.5/-0.9
+1.5/–0.9
LSB max
1 V External Reference
Code Distribution
1
1
LSB typ
ADC Input is a DC Voltage
CALIBRATED ENDPOINT ERRORS
5, 6
Offset Error
±4
±4LSB max
Offset Error Match
±1
±1LSB typ
Gain Error
±2
±3LSB max
Gain Error Match
–85
–85
dB typ
DYNAMIC PERFORMANCE
fIN = 10 kHz Sine Wave
fSAMPLE = 147 kHz
Signal-to-Noise Ratio (SNR)
7
71
71
dB typ
Total Harmonic Distortion (THD)
–85
–85
dB typ
Peak Harmonic or Spurious Noise
–85
–85
dB typ
Channel-to-Channel Crosstalk
8
–80
–80
dB typ
ANALOG INPUT
Input Voltage Ranges
0 to VREF
0 to VREF
V
Leakage Current
±1
±1
µA max
Input Capacitance
32
32
pF typ
TEMPERATURE SENSOR
9
Voltage Output at 25
°C
650
650
mV typ
Voltage TC
–2.0
–2.0
mV/
°C typ
Accuracy
±3
±3
°C typ
Internal 2.5 V VREF
±1.5
±1.5
°C typ
External 2.5 V VREF
DAC CHANNEL SPECIFICATIONS
DAC Load to AGND
Internal Buffer Enabled
RL = 10 k
Ω, C
L = 100 pF
DC ACCURACY
10
Resolution
12
12
Bits
Relative Accuracy
±3
±3LSB typ
Differential Nonlinearity
11
–1
–1
LSB max
Guaranteed 12-bit Monotonic
±1/2
±1/2
LSB typ
Offset Error
±50
±50
mV max
VREF Range
Gain Error
±1
±1% max
AVDD Range
±1
±1% typ
VREF Range
Gain Error Mismatch
0.5
0.5
% typ
% of Full Scale on DAC1
ANALOG OUTPUTS
Voltage Range_0
0 to VREF
0 to VREF
V typ
DAC VREF = 2.5 V
Voltage Range_1
0 to VDD
0 to VDD
V typ
DAC VREF = VDD
Output Impedance
0.5
0.5
Ω typ
DAC AC CHARACTERISTICS
Voltage Output Settling Time
15
15
µs typ
Full-Scale Settling Time to
within 1/2 LSB of Final Value
Digital-to-Analog Glitch Energy
10
10
nV sec typ
1 LSB Change at Major Carry
(AVDD = DVDD = 2.7 V to 3.3 V or 4.5 V to 5.5 V. VREF = 2.5 V Internal Reference, MCLKIN = 16 MHz,
all specifications TA = TMIN to TMAX, unless otherwise noted.)
SPECIFICATIONS1
ADuC831


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