GMS81C1404/GMS81C1408
June. 2001 Ver 1.2
17
8. ELECTRICAL CHARACTERISTICS (GMS87C1404/GMS87C1408)
8.1 Absolute Maximum Ratings
Supply voltage...........................................-0.3 to +6.0 V
Storage Temperature ................................-40 to +125
°
C
Voltage on any pin with respect to Ground (V
SS
)
............................................................... -0.3 to V
DD
+0.3
Maximum current out of V
SS
pin........................200 mA
Maximum current into V
DD
pin..........................150 mA
Maximum current sunk by (I
OL
per I/O Pin) ........25 mA
Maximum output current sourced by (I
OH
per I/O Pin)
...............................................................................15 mA
Maximum current (
Σ
I
OL
) ....................................150 mA
Maximum current (
Σ
I
OH
)....................................100 mA
Note:
Stresses above those listed under “Absolute Maxi-
mum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional op-
eration of the device at any other conditions above
those indicated in the operational sections of this
specification is not implied. Exposure to absolute
maximum rating conditions for extended periods
may affect device reliability.
8.2 Recommended Operating Conditions
8.3 A/D Converter Characteristics
(T
A
=25
°
C, V
SS
=0V, V
DD
=5.12V @
f
XIN
=8MHz, V
DD
=3.072V @
f
XIN
=4MHz)
Parameter
Symbol
Condition
Specifications
Unit
Min.
Max.
Supply Voltage
V
DD
f
XIN
=8MHz
4.5
5.5
V
f
XIN
=4.2MHz
2.5
5.5
V
Operating Frequency
f
XIN
V
DD
=4.5~5.5V
1
8
MHz
V
DD
=2.5~5.5V
1
4.2
MHz
Operating Temperature
T
OPR
-20
85
°
C
Parameter
Symbol
Condition
Specifications
Unit
Min.
Typ.
Max.
Analog Input Voltage Range
V
AIN
AVREFS=0
V
SS
-
V
DD
V
AVREFS=1
V
SS
-
V
REF
Analog Power Supply Input Voltage Range
V
REF
V
DD
=5V
3
-
V
DD
V
V
DD
=3V
2.4
-
V
DD
V
Overall Accuracy
N
ACC
-
±
1.0
±
1.5
LSB
Non-Linearity Error
N
NLE
-
±
1.0
±
1.5
LSB
Differential Non-Linearity Error
N
DNLE
-
±
1.0
±
1.5
LSB
Zero Offset Error
N
ZOE
-
±
0.5
±
1.5
LSB
Full Scale Error
N
FSE
-
±
0.25
±
0.5
LSB
Gain Error
N
NLE
-
±
1.0
±
1.5
LSB
Conversion Time
T
CONV
f
XIN
=8MHz
-
-
10
μ
S
f
XIN
=4MHz
-
-
20
AV
REF
Input Current
I
REF
AVREFS=1
-
0.5
1.0
mA