
HD404889/HD404899/HD404878/HD404868 Series
183
A/D Converter Characteristics (HD404888, HD4048812, HD404889: V
CC
=1.8V to 5.5V, GND=0V,
T
a
=–20
°
C to +75
°
C; HCD404889: V
CC
=1.8V to 5.5V, GND=0V, Ta=+75
°
C; HD4074889: V
CC
=2.0V to
5.5V, GND=0V, T
a
=–20
°
C to +75
°
C, unless otherwise specified)
Item
Symbol
Pins
min.
typ. max.
Unit
Test conditions
Notes
Analog power supply
voltage
AV
CC
AV
CC
V
CC
–0.3
V
CC
V
CC
+0.3
V
1
Analog input voltage
AV
in
AN
0
to AN
5
AV
SS
—
AV
CC
V
AV
CC
-AV
SS
current
I
AD
—
—
500
μ
A
V
CC
=AV
CC
=5.0V
Analog input
capacitance
CA
in
AN
0
to AN
5
—
15
—
pF
Resolution
—
8
—
bit
Number of inputs
0
—
6
channel
Absolute accuracy
—
—
±
2.0
LSB
V
CC
=AV
CC
=2.7V to
5.5V
—
—
±
3.0
LSB
V
CC
=AV
CC
=1.8V to
2.7V
2
Conversion time
65
—
125
t
cyc
Input impedance
AN
0
to AN
5
1
—
—
M
Notes: 1. Connect to the V
pin when the A/D converter is not used. The AV
setting ranges are 1.8
V
≤
AV
≤
5.5V (HD404888, HD4048812, HD404889, HCD404889) and 2.0V
≤
AV
CC
≤
5.5V
(HD4074889)
2. The conversion time is 125tcyc.