National CP3BT26 - Manual (Page 245)

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CP3
BT26
30.3 USB TRANSCEIVER ELECTRICAL CHARACTERISTICS (Temperature: -40°C
≤ T
A
≤ +85°C)
30.4 ADC ELECTRICAL CHARACTERISTICS (Temperature: -40°C
≤ T
A
≤ +85°C)
Symbol Parameter Conditions Min Max Units
V
DI
Differential Input Sensitivity (D+) - (D-) -0.2 0.2 V
V
CM
Differential Common Mode Range 0.8 2.5 V
V
SE
Single-Ended Receiver Threshold 0.8 2.0 V
V
OL
Output Low Voltage R
L
= 1.5 kohm to 3.6V 0.3 V
V
OH
Output High Voltage 2.8 V
V
OZ
TRI-STATE Data Line Leakage 0V < V
IN
< 3.3V -10 10 µA
C
TRN
Transceiver Capacitance 20 pF
Symbol Parameter Conditions Min Typ Max Units
V
PREF
ADC Positive Reference Input 2 2.75 V
V
NREF
ADC Negative Reference Input 0 0.25 V
ADC Input Range V
NREF
V
PREF
V
Clock Frequency 12 MHz
t
C
Conversion Time (12-bit result) 14 µs
INL Integral Non-Linearity ±2 LSB
DNL Differential Non-Linearity ±0.7 LSB
C
ADCIN
Total Capacitance of ADC Input 9 20 pF
C
ADCINS
Switched Capacitance of ADC Input 8 10 pF
R
ADCIN
Resistance of ADC Input Path 0.1 12 kohm
C
ADCIN
Total Capacitance of ADC Reference Input 50 100 pF
C
ADCINS
Switched Capacitance of ADC Reference Input 8 10 pF
R
ADCIN
Resistance of ADC Reference Input Path 0.2 0.6 kohm