WM2638
Production Data
TYPICAL PERFORMANCE GRAPHS
3
VDD = 5V, V
REF
= External 2.048V, Speed = Fast Mode, Load = 10k/100pF
2
1
INL - LSB
0
-1
-2
-3
0
512
1024
1536
2048
DIGITAL CODE
2559
3071
3583
4095
Figure 2 Integral Non-Linearity
0.4
0.4
VDD = 3V, V
REF
= 1V, Input Code = 0
0.35
0.35
VDD = 5V, V
REF
= 2V, Input Code = 0
0.3
0.3
OUTPUT VOLTAGE - V
0.25
OUTPUT VOLTAGE - V
0
1
2
3
4
5
ISINK- mA
6
7
8
9
Slow
0.25
0.2
0.2
0.15
0.15
0.1
0.1
0.05
0.05
0
10
Fast
0
0
1
2
3
4
5
ISINK - mA
6
7
8
9
Slow
10
Fast
Figure 3 Sink Current VDD = 3V
2.06
Figure 4 Sink Current VDD = 5V
4.1
VDD = 3V, V
REF
= 1V, Input Code = 4095
2.055
4.095
VDD = 5V, V
REF
= 2V, Input Code = 4095
2.05
4.09
OUTPUT VOLTAGE - V
2.045
OUTPUT VOLTAGE - V
4.085
2.04
4.08
2.035
4.075
2.03
4.07
2.025
4.065
2.02
0
1
2
3
4
5
6
7
8
9
10
Slow
4.06
11
Fast
0
1
2
3
4
5
6
7
8
9
10
Slow
11
Fast
ISOURCE- mA
ISOURCE - mA
Figure 5 Source Current VDD = 3V
Figure 6 Source Current VDD = 5V
WOLFSON MICROELECTRONICS LTD
PD Rev 1.0 July 99
6
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
