SFP Laser Controller and
Diagnostic IC
Typical Operating Characteristics (continued)
(V CC = +3.3V, T A = 25°C, unless otherwise noted.)
DAC 0 CURRENT
DAC 0 CURRENT
DAC 1 CURRENT vs. SUPPLY VOLTAGE
vs. FUNCTION OF THE VOLTAGE ON THE DAC
vs. FUNCTION OF THE VOLTAGE ON THE DAC
2.0
DAC 1, 1.5mA
1.00
DAC 0, 0.5mA
2.0
DAC 0, 1.5mA
1.6
0.80
1.5
1.2
0.8
PROGRAMMED DAC
SETTING (FFh)
0.60
0.40
PROGRAMMED DAC
1.0
PROGRAMMED DAC
SETTING (FFh)
0.4
0.20
SETTING (FFh)
0.5
0
3.0
3.5
4.0 4.5 5.0
5.5
0
0.7
1.2
1.7 2.2 2.7
3.2
0
0.7
1.2
1.7 2.2 2.7
3.2
SUPPLY VOLTAGE (V)
DAC 1 CURRENT
vs. FUNCTION OF THE VOLTAGE ON THE DAC
1.00
DAC 1, 0.5mA
DAC 0 VOLTAGE (V)
DAC 1 CURRENT
vs. FUNCTION OF THE VOLTAGE ON THE DAC
2.00
DAC 1, 1.5mA
1.00
DAC 0 VOLTAGE (V)
DAC CURRENT AT SETTING 7Fh
vs. TEMPERATURE
0.80
0.60
1.50
PROGRAMMED DAC
0.80
0.60
DACS 0 AND 1 IN 1.5mA MODE
0.40
1.00
SETTING (FFh)
0.40
0.20
0
PROGRAMMED DAC
SETTING (FFh)
0.50
0
0.20
0.00
DACS 0 AND 1 IN 0.5mA MODE
0.7
1.2
1.7 2.2 2.7
3.2
0.7
1.2
1.7 2.2 2.7
3.2
-40
-20
0
20 40 60
80
100
3.0
2.5
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
DAC 1 VOLTAGE (V)
MONITOR FAST-TRIP
INL (LSB)
3.0
2.5
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
DAC 1 VOLTAGE (V)
MONITOR FAST-TRIP
DNL (LSB)
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
TEMPERATURE ( ° C)
LSB ERROR vs. FULL-SCALE INPUT
0
25 50 75 100 125 150 175 200 225 250
0
25 50 75 100 125 150 175 200 225 250
0
10 20 30 40 50 60 70 80 90 100
SETTING (DEC)
SETTING (DEC)
NORMALIZED FULL-SCALE (%)
12
____________________________________________________________________
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