Datasheet

DS1878
SFP+ Controller with Digital LDD Interface
_______________________________________________________________________________________ 9
Typical Operating Characteristics
(V
CC
= +2.85V to +3.9V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS1878 toc01
V
CC
(V)
SUPPLY CURRENT (mA)
3.853.603.10 3.35
1.7
1.9
2.1
2.3
2.7
2.5
2.9
1.5
2.85
+95°C
SDA = SCL = V
CC
-40°C
+25°C
SUPPLY CURRENT
vs. TEMPERATURE
DS1878 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
806040200-20
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.0
-40
V
CC
= 3.3V
V
CC
= 3.9V
V
CC
= 2.85V
SDA = SCL = V
CC
MON1–MON4 INL
DS1878 toc03
MON1–MON4 INPUT VOLTAGE (V)
MON1–MON4 INL (LSB)
2.01.51.00.5
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0 2.5
V
CC
= 3.3V
USING FACTORY-PROGRAMMED FULL-SCALE
VALUE OF 2.5V
MON1–MON4 DNL
DS1878 toc04
MON1–MON4 INPUT VOLTAGE (V)
MON1–MON4 DNL (LSB)
2.01.51.00.5
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0 2.5
V
CC
= 3.3V
USING FACTORY-PROGRAMMED FULL-SCALE
VALUE OF 2.5V
DAC1 AND DAC2 DNL
DS1878 toc05
DAC1 AND DAC2 POSITION (DEC)
DAC1 AND DAC2 DNL (LSB)
500400300200100
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0
DAC1 AND DAC2 INL
DS1878 toc06
DAC1 AND DAC2 POSITION (DEC)
DAC1 AND DAC2 INL (LSB)
500400100 200 300
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
-2.0
0