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