AK9844 Datasheet, PDF (14/17 Pages) Asahi Kasei Microsystems – 4Kbit EEPROM with 4ch 8bit D/A Converter

ASAHI KASEI
[AK9844]
2) DAC section
(VCC=+5V‘10%, GND=0V, Ta=-20∼70°C unless otherwise specified)
Parameter
Symbol
Condition
min
typ
max
Unit
D/A Reference Voltage
A0,A1
VREF1
3.5
VCC
V
A2,A3
VREF2
3.5
VCC
V
D/A Reference current
IREF
VREF=5.0V
200
uA
Resolution
Monotonicity
8
bit
Differential Non-Lineality
DNL VCC=VREF=5.0V -1
0
+1
LSB
Integral Non-Lineality
NL
1LSB=VREF/256 -2.0
0
+2.0
LSB
(Note8)
Error or
EZERO IAO=0.0uA
+0.1
V
Input data "00"
Error for
(Note7)
EFULL
CL=100pF
+0.1
V
Input data "FF"
(Note7)
Buffer-AMP Output
VAO
| IAO |≤200uA
0.2
VCC-0.2
V
Voltage Range
Buffer-AMP Output
VAO
| IAO |≤500uA
0.3
VCC-0.3
V
Voltage Range
Setup Time in AUTO READ
tARS
500
us
D/A Settling Time
tLDD
CL=100pF
100
us
Note7. Please refer to the figure.2.
Note8. Integral Non-Linearity is the error between the actual line and the ideal line. The ideal line exhibits a
perfect linear DAC output characteristics between the input digital data"00" and the input digital
data "FF".
5 Please refer to "Instruction and Data Format" regarding the relation between input digital data and DAC
output voltage.
DAD02E-00
Figure.2 DAC output characteristics(IAO=0.0uA)
- 14 -
1999/05