MB90560/565 Series
66
DS07-13715-5E
5.
Electrical Characteristics for the A/D Converter
(TA
= 40 °C to +85 °C, 3.0 V ≤ AVR, VCC = AVCC = 5.0 V ±10%, VSS = AVSS = 0.0 V)
* : Current when A/D converter is not used and CPU is in stop mode (VCC
= AVCC = AVR = 5.0 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 external circuit
≤ 10 k (Sampling Time = 4.0 s)
If the output impedance of the external circuit is too high, the analog voltage sampling time may be too short.
Parameter
Symbol
Pin Name
Value
Unit
Remarks
Min.
Typ.
Max.
Resolution
10
bit
Total error
±5.0
LSB
Non-linearity error
±2.5
LSB
Differential linearity error
±1.9
LSB
Zero transition voltage
VOT
AN0 to AN7
AVSS
3.5 LSB
AVSS
+0.5 LSB
AVSS
+4.5 LSB
V
1 LSB
= (AVRAVSS)/
1024
Full-scale transition
voltage
VFST
AN0 to AN7
AVR
6.5 LSB
AVR
1.5 LSB
AVR
+1.5 LSB
V
Conversion time
176 tCP
ns
Sampling time
64 tCP
ns
Analog port input
current
IAIN
AN0 to AN7
10
A
Analog input voltage
VAIN
AN0 to AN7
0
AVR
V
Reference voltage
AVR
2.7
AVCC
V
Power supply current
IA
AVCC
5
mA
IAH
AVCC
5
A*
Reference voltage
supply current
IR
AVR
400
A
IRH
AVR
5
A*
Variation between
channels
AN0 to AN7
4LSB
Equivalent circuit of analog input circuit
C
RON
Analog input
Comparator
MB90561A, MB90562A
RON
= 2.2 k approx.
C
= 45 pF approx.
MB90F562B
RON
= 2.6 k approx.
C
= 28 pF approx.
Note : The values listed are an indication only.