MB90560/565 Series
5. Electrical Characteristics for the A/D Converter
(MB90567/568/F568 : TA = −40 °C to +85 °C, 2.7 V ≤ AVR, VCC = AVCC = 2.7 V to 3.6 V, VSS = AVSS = 0.0 V)
(MB90V560 : TA = +25 °C, 3.0 V ≤ AVR, VCC = AVCC = 3.0 V to 3.6 V, VSS = AVSS = 0.0 V)
Value
Parameter
Resolution
Symbol
Pin Name
Unit
Remarks
Min.
Typ.
Max.
10
bit
Total error
±3.0
±2.5
LSB
LSB
Non-linearity error
Differential linearity
error
±1.9
LSB
mV
mV
Zero transition
voltage
AVSS
−1.5 LSB
AVSS
+0.5
AVSS
+2.5 LSB
VOT
AN0 to AN7
AN0 to AN7
1 LSB = AVRH/1024
Full-scale transition
voltage
AVR
AVR
AVR
VFST
−3.5 LSB −1.5 LSB +0.5 LSB
Conversion time
Sampling time
66 tCP
ns
ns
32 tCP
Analog port input
current
IAIN
AN0 to AN7
10
µA
Analog input voltage
Reference voltage
VAIN
AN0 to AN7
AVR
0
AVR
AVCC
5
V
V
2.7
IA
IAH
IR
AVCC
1
mA
µA
µA
µA
Power supply current
AVCC
5
*
*
AVR
100
200
5
Reference voltage
supply current
IRH
AVR
Variation between
channels
AN0 to AN7
4
LSB
* : Current when A/D converter is not used and CPU is in stop mode (VCC = AVCC = AVR = 3.3 V)
Notes : • The L reference voltage is fixed to AVSS. The relative error increases as AVR becomes smaller.
• Ensure that the output impedance of the external circuit connected to the analog input meets the following
condition :
Output impedance of MB90F568 external circuit ≤ 14 kΩ (Sampling Time = 4 µs)
Output impedance of MB90567/568 external circuit ≤ 7 kΩ (Sampling Time = 4 µs)
• If the output impedance of the external circuit is too high, the analog voltage sampling time may be too short.
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