AK9844A Datasheet, PDF (14/17 Pages) Asahi Kasei Microsystems – 4Kbit EEPROM with 4ch 8bit D/A Converter

ASAHI KASEI
[AK9844A]
2) DAC section
( 2.7V ≤ VCC ≤ 5.5V, GND=0V, -40°C ≤ Ta ≤ 85°C, unless otherwise specified )
Parameter
Symbol
Condition
Min.
D/A Reference Voltage
A0, A1 VREF1
2.7
A2, A3 VREF2
2.7
D/A Reference Current IREF
VREF=5.0V
Resolution
Monotonicity
Differential Non-Linearity DNL
VCC=VREF=5.0V
-1
Integral Non-Linearity
NL
1LSB=VREF/256
-1.5
(Note7)
IAO=0.0µA
Error for Input data "00" EZERO CL=100pF
(Note6)
Error for Input data "FF" EFULL
(Note6)
Buffer-AMP Output
VAO1 |IAO| = 0µA
0.1
Voltage Range(1)
3.6V ≤ VCC ≤ 5.5V
VAO2 |IAO| ≤ 200µA
0.2
(Note8) ^{VAO3 |IAO| ≤ 1mA}
0.3
Buffer-AMP Output
VAO4 |IAO| = 0µA
0.1
Voltage Range(2)
2.7V ≤ VCC < 3.6V
VAO5 |IAO| ≤ 500µA
0.3
Setup Time in
tARS
500
AUTO READ
D/A Settling Time
tLDD1 3.6V ≤ VCC ≤ 5.5V
(CL=100pF) tLDD2 2.7V ≤ VCC < 3.6V
Typ. Max. Unit
VCC V
VCC V
200
400 µA
8
bit
0
+1
LSB
0
+1.5 LSB
+0.1
V
+0.1
V
VCC-0.1 V
VCC-0.2 V
VCC-0.3 V
VCC-0.1 V
VCC-0.3 V
µs
100
200
µs
400 µs
Note6: Please refer to the Figure 2.
Note7: 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".
Note8: VCC=VREF
* Please refer to "Instruction and Data Format" regarding the relation between input digital data
and DAC output voltage.
DAC Output Voltage
5.0V
VCC=VREF=5V
CL=100pF
EZERO
00
5.0V
EFULL
FF
DAD05E-00
00
FF
Input digital data
Figure 2. DAC output characteristics (IAO=0.0µA)
- 14 -
2005/03