AK2571 Datasheet, PDF (9/52 Pages) Asahi Kasei Microsystems – Single-Chip Automatic Power/Temperature Control for WDM Laser Diodes

AKM Confidential
AK2571
3.4 Gain setting of I-DAC1,2,3
See the table below for a description on how to set the three I-DACs full-scale voltages. The resolution is set in proportion
with the gain.
I-DAC1 gain setting
R_DAC1_GAIN Gain set value Max output Setting range of Non missing code Current
(E_DAC1_GAIN)
current (typ) output current (typ) warranty range (typ) resolution (typ)
00
1
121.8mA
30mA-121.8mA 30mA over
0.36mA
01
1/2
60.9mA
15mA-60.9mA
15mA over
0.18mA
10
1/4
30.45mA
7.5mA-30.45mA 7.5mA over
0.09mA
11
1/12
10.15mA
2.5mA-10.15mA 2.5mA over
0.03mA
I-DAC2 Gain setting
R_DAC1_GAIN Gain set value Max output Setting range of Non missing code Current
(E_DAC1_GAIN)
current (typ)
output current (typ) warranty range (typ) resolution (typ)
00(11)
1
20.42mA
0mA-21.42mA
2.5mA over
0.084mA
10
1/2
10.71mA
0mA-10.71mA
1.25mA over
0.042mA
11
1/4
5.36mA
0mA-5.36mA
0.625mA over
0.021mA
I-DAC3 Gain setting
R_DAC1_GAIN Gain set value Max output Setting range of Non missing code Current
(E_DAC1_GAIN)
current (typ)
output current (typ) warranty range (typ) resolution (typ)
00(11)
1
21.42mA
0mA-20.42mA
2.5mA over
0.084mA
10
1/2
10.71mA
0mA-10.71mA
1.25mA over
0.042mA
11
1/4
5.36mA
0mA-5.36mA
0.625mA over
0.021mA
<Rev. 0.6E Preliminary>
-9-
2001/11