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Data Sheet
ADuC7023
| Page 5 of 96
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
Resolution
12
Bits
Integral Nonlinearity
±0.6
±1.5
LSB
2.5 V internal reference
±1.0
LSB
1.0 V external reference
±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
Offset Error
±1
±2
LSB
Offset Error Match
±1
LSB
Gain Error
±2
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
75
dB
Channel-to-Channel Crosstalk
80
dB
Measured on adjacent channels
ANALOG INPUT
Input Voltage Ranges
Differential Mode
V
Single-Ended Mode
0 to VREF
V
Leakage Current
±1
±6
A
Input Capacitance
20
pF
During ADC acquisition
ON-CHIP VOLTAGE REFERENCE
0.47 F from VREF to AGND
Output Voltage
2.5
V
Accuracy
±4
mV
TA = 25°C
Reference Temperature Coefficient
±15
ppm/°C
Power Supply Rejection Ratio
75
dB
Output Impedance
51
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 k, CL = 100 pF
Resolution
12
Bits
Relative Accuracy
±2
LSB
Differential Nonlinearity
±1
LSB
Guaranteed monotonic
Offset Error
±15
mV
2.5 V internal reference
±1
%
Gain Error Mismatch
0.1
%
% of full scale on DAC0
RL = 1 k, CL = 100 pF
Resolution
12
Bits
Relative Accuracy
±2.5
LSB
Differential Nonlinearity
±1
LSB
Guaranteed monotonic
Offset Error
±15
mV
2.5 V internal reference
±1
%
Gain Error Mismatch
0.1
%
% of full scale on DAC0
ANALOG OUTPUTS
Output Voltage Range 1
0 to 2.5
V
VREF range: AGND to AVDD
Output Voltage Range 2
0 to AVDD
V
Output Impedance
2
Rev. E