Table 5.3. ADC0 Electrical Characteristics (VDD = 2.5 V, VREF = 2.2 V)
VDD = 2.5 V, VREF = 2.2 V (REFSL=0), –40 to +85 °C unless otherwise specified. Typical values are given
at 25 C.
Parameter
Conditions
Min
Typ
Max
Units
DC Accuracy
Resolution
12
bits
Integral Nonlinearity
—
±1
LSB
Differential Nonlinearity
Guaranteed Monotonic
—
±1
LSB
Offset Error
—
±3
±10
LSB
Full Scale Error
—
±3
±10
LSB
Dynamic Performance (10 kHz sine-wave Single-ended input, 0 to 1 dB below Full Scale, 200 ksps)
Signal-to-Noise Plus Distortion
Regular Mode (BURSTEN = '0')
Burst Mode (BURSTEN = '0')
66
60
69
63
—
dB
Total Harmonic Distortion
Up to the 5th harmonic
—
–77
—
dB
Spurious-Free Dynamic Range
—
–94
—
dB
Conversion Rate
SAR Conversion Clock
Regular Mode (BURSTEN = '0')
—
3
MHz
Conversion Time in SAR Clocks
1—
13
—
clocks
Track/Hold Acquisition Ti
me21
—
s
Throughput Rate
—
200
ksps
Analog Inputs
Input Voltage Range
0
—
VREF
V
Input Capacitance
—
12
—
pF
Temperature Sensor
—
±0.2
—
°C
—
2.95
—
mV/°C
—
±73
—
V/°C
(Temp = 0 °C)
—
900
—
mV
—
±17
—
mV
Power Specifications
Power Supply Current
(VDD supplied to ADC0)
Operating Mode, 200 ksps
—
680
1000
A
Burst Mode (Idle)
—
100
—
A
Power Supply Rejection
—
1
—
mV/V
Notes:
1. An additional 2 FCLK cycles are required to start and complete a conversion.
2. Additional tracking time may be required depending on the output impedance connected to the ADC input.
3. Represents one standard deviation from the mean.
4. Includes ADC offset, gain, and linearity variations.
Rev. 1.1
67
C8051F410/1/2/3