DS1864 Datasheet, PDF (11/72 Pages) Dallas Semiconductor – SFP Laser Controller and Diagnostic IC

SFP Laser Controller and
Diagnostic IC
Typical Operating Characteristics (continued)
(V_CC = +3.3V, T_A = 25°C, unless otherwise noted.)
DAC 0 DNL (LSB)
1.0
0.8 1.5mA MODE
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0 25 50 75 100 125 150 175 200 225 250
SETTING (DEC)
DAC 1 INL (LSB)
1.0
0.8 0.5mA MODE
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0 25 50 75 100 125 150 175 200 225 250
SETTING (DEC)
DAC 1 DNL (LSB)
1.0
0.8 ^{0.5mA MODE}
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0 25 50 75 100 125 150 175 200 225 250
SETTING (DEC)
DAC 1 INL (LSB)
1.0
0.8 1.5mA MODE
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0 25 50 75 100 125 150 175 200 225 250
SETTING (DEC)
DAC 1 DNL (LSB)
1.0
0.8 1.5mA MODE
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0 25 50 75 100 125 150 175 200 225 250
SETTING (DEC)
DAC SETTING vs. POWER-UP VOLTAGE
0.50
DAC 0, 0.5mA
0.40
PROGRAMMED DAC
SETTING (80h)
0.30
0.20
0.10
0
0
1
2
3
4
5
POWER-UP VOLTAGE (V)
DAC 0 CURRENT vs. SUPPLY VOLTAGE
1.00
DAC 0, 0.5mA
0.80
PROGRAMMED DAC
SETTING (FFh)
0.60
0.40
DAC 0 CURRENT vs. SUPPLY VOLTAGE
2.0
DAC 0, 1.5mA
1.6
1.2
PROGRAMMED DAC
SETTING (FFh)
0.8
DAC 1 CURRENT vs. SUPPLY VOLTAGE
1.00
DAC 1, 0.5mA
0.80
0.60
PROGRAMMED DAC
SETTING (FFh)
0.40
0.20
0.4
0.20
0.00
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
0
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
0.00
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
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