Z8 Encore! XP® 4K Series
Product Specification
222
Table 138. Analog-to-Digital Converter Electrical Characteristics and Timing
VDD = 3.0 to 3.6V
TA = 0°C to +70°C
Symbol
Parameter
Minimum Typical
Maximum
Units Conditions
Single-Shot Conversion
Time
–
–
5129
–
–
System All measurements but
clock temperature sensor
cycles
10258
256
Temperature sensor
measurement
Continuous Conversion
Time
System All measurements but
clock temperature sensor
cycles
512
10
–
Temperature sensor
measurement
Signal Input Bandwidth
–
–
kHz As defined by -3dB
point
R
Analog Source Impedance
10
kΩ
kΩ
kΩ
In unbuffered mode
In buffered modes
In unbuffered mode at
S
500
Zin
Vin
Input Impedance
TBD
150
4
20MHz
10
0
TBD
MΩ In buffered modes
Input Voltage Range
V
V
V
Unbuffered Mode
DD
0.3
V
-1.1
Buffered Modes
DD
Note: these values
define the range over
which the ADC
performs within spec;
exceeding these values
does not cause
damage or instability;
see DC Characteristics
on page 213 for
absolute pin voltage
limits
1
Analog source impedance affects the ADC offset voltage (because of pin leakage) and input settling
time.
2
Devices are factory calibrated at V
= 3.3V and T = +30°C, so the ADC is maximally accurate under
A
DD
these conditions.
3
LSBs are defined assuming 10-bit resolution.
The input impedance is inversely proportional to the system clock frequency.
4
PS022815-0206
Electrical Characteristics
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