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MB86R02 'Jade-D' Hardware Manual V1.64
34.4.3
ADC
Table 34-14 Recommended Operating Conditions
Parameter
Power supply voltage
Reference voltage (H)
Reference voltage (L)
Decoupling capacitor
Analog input voltage
Analog input frequency
Note:
*1: V
= AD_AVS1 (analogue GND)
SS
*2: In the case that VR is decoupled with AVS by decoupling capacitor, A/D outputs
incorrect result immediately after power-on or at the resumption from power down mode.
Because the charge current for decoupling capacitors is supplied through the reference
resistance, it takes about 2ms to get the correct result (it is the case decoupling capacitor
is 0.1µF.).
Table 34-15 ADC Characteristics
(VDD = 1.2V, AVD = 3.0V, FS = 100KS/s, FC = 1.4MHz, FVIN = 1 kHz, T
Parameter
Supply current
(included reference
current)
Reference voltage (M)
Reference resistance
Zero transition voltage
(*2)
Full scale transition
Voltage (*2)
Integral non linearity
(*3)
Differential non linearity
(*3)
*1: VR is connected to AVS with decoupling capacitor (0.1uF).
Unique voltage is supplied to VRH and VRL by voltage source.
*2: VZT and VFST are dependent on chip layout and wiring resistance.
34-12
Symbol
Min.
AD_AVD0
2.70
AD_VRH0
AD_AVD0*0.75
AD_VRH1
AD_VRL0
V
(*1)
SS
AD_VRL1
AD_VR0 (*2)
0.05
AD_VR1 (*2)
AD_VIN0
AD_VIN1
AD_VRL0
AD_VIN2
AD_VRL1
AD_VIN3
AD_VIN0
AD_VIN1
0
AD_VIN2
AD_VIN3
Symbol
Min.
AD_AVD0
–
-1
AD_VR0
–
AD_VR1
-3
AD_VRH0
AD_VRH1
7.3
AD_VRL0
AD_VRL1
Typ.
-20
Typ.
-20
-2.0
-1.5
Value
Typ.
Max.
3.00
3.60
–
AD_AVD0
–
AD_AVD0*0.25
–
–
AD_VRH0
–
AD_VRH1
–
500/250*
Value
Typ.
Max.
0.8
1.2
–
50
AD_AVD0/2
–
–
3
9
10.7
AD_VRL0+1LSB
Typ.
AD_VRL1+1LSB
+20
AD_VRH0-1LSB
Typ.
AD_VRH1-1LSB
+20
–
+2.0
–
+1.5
Unit
V
V
V
µF
V
kHz
= 25°C (*1))
A
Unit
mA
µA
V
%
kΩ
mV
mV
LSB
LSB
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