Z8F082ASJ020EG Datasheet, PDF (253/282 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
236
Table 139. Analog-to-Digital Converter Electrical Characteristics and Timing
V_DD = 3.0 V to 3.6 V
T_A = 0°C to +70°C
(unless otherwise stated)
Symbol Parameter
Minimum Typical Maximum Units Conditions
Resolution
10
Differential Nonlinearity
–1.0
–
(DNL)
Integral Nonlinearity (INL) –3.0
–
Offset Error with Calibra-
+1
tion
Absolute Accuracy with
+3
Calibration
–
bits
1.0
LSB³ External V_REF = 2.0 V; 
R_S  3.0 k
3.0
LSB³ External V_REF = 2.0 V; 
R_S  3.0 k
LSB³
LSB³
V_REF Internal Reference Volt-
1.0
1.1
1.2
V REFSEL=01
age
2.0
2.2
2.4
REFSEL=10
V_REF
V_REF
R_RE-
FOUT
Internal Reference Varia-
tion with Temperature
Internal Reference Volt-
age Variation with V_DD
Reference Buffer Output
Impedance
+1.0
+0.5
850
% Temperature variation
with V_DD = 3.0
% Supply voltage varia-
tion with T_A = 30°C
W When the internal ref-
erence is buffered and
driven out to the VREF
pin (REFOUT = 1)
Single-Shot Conversion
–
Time
5129
–
Sys- All measurements but
tem temperature sensor
clock
cycles
10258
Temperature sensor
measurement
Notes:
1. Analog source impedance affects the ADC offset voltage (because of pin leakage) and input settling time.
2. Devices are factory calibrated at V_DD = 3.3V and T_A = +30°C, so the ADC is maximally accurate under these
conditions.
3. LSBs are defined assuming 10-bit resolution.
4. This is the maximum recommended resistance seen by the ADC input pin.
5. The input impedance is inversely proportional to the system clock frequency.
PS022827-1212
P R E L I M I N A R Y On-Chip Peripheral AC and DC Electrical