User Manual

DS1862
XFP Laser Control and Digital Diagnostic IC
4 _____________________________________________________________________
I
2
C AC ELECTRICAL CHARACTERISTICS
(V
CC3
= +2.9V to +5.5V, T
A
= -40°C to +100°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS
MIN TYP MAX
UNITS
SCL Clock Frequency f
SCI
0
400
kHz
Clock Pulse-Width Low t
LOW
1.3 µs
Clock Pulse-Width High t
HIGH
0.6 µs
Bus Free Time between STOP
and START Conditions
t
BUF
1.3 µs
Start Hold Time t
HD:SDA
0.6 µs
Start Setup Time t
SU:SDA
0.6 µs
Data in Hold Time t
HD:DAT
0 0.9 µs
Data in Setup Time t
SU:DAT
100
ns
Rise Time of Both SDA and
SCL Signals
t
R
(Note 5)
20 +
0.1C
B
300 ns
Fall Time of Both SDA and
SCL signals
t
F
(Note 5)
20 +
0.1C
B
300 ns
STOP Setup Time t
SU:STO
0.6 µs
MOD-SEL Setup Time
t
H os t_sel e ct_set u
p
2ms
MOD-SEL Hold Time
t
Host_select_hold
10 µs
Aborted Sequence Bus Release
t
MOD-DE SEL_Ab ort
2ms
C ap aci ti ve Load for E ach Bus Li ne
C
B
(Note 5) 400 pF
EEPROM Write Time t
W
≤ 4-Byte write (Note 6) 16 ms
ANALOG OUTPUT CHARACTERISTICS
(V
CC3
= +2.9V to +5.5V, V
CC2
= +1.6V to +3.6V, T
A
= -40°C to +100°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
I
BIASSET
I
BIASSET
0.01 1.50
mA
I
BIASSET
(Off-State Current)
I
BIASSET
Shutdown
±10 ±100
nA
I
MODSET
I
MODSET
0.01 1.20
mA
I
MODSET
(Off-State Current)
I
MODSET
Shutdown
±10 ±100
nA
Voltage on I
BIASSET
and I
MODSET
V
MAX
(Note 7) 0.7 3.0 V
V
THRSET
V
THRSET
I
MAX
= 100µA 50
1000
mV
V
THRSET
Drift Across temperature (Note 8) -5 +5 %
V
THRSET
Capacitance load
C
THRSET
1nF
APC Calibration Accuracy +25°C 25 µA
0.200mA to 1.5mA -5 +5 %
APC Temp Drift
50µA to 200µA 12 µA
Sink, SRC_SNK_B = 0
-0.9 +0.9
I
BMD
DNL
Source, SRC_SNK_B = 1
-0.9 +0.9
LSB
Sink, SRC_SNK_B = 0
-4.0 +4.0
I
BMD
INL
Source, SRC_SNK_B = 1
-4.0 +4.0
LSB
I
BMD
Voltage Drift 1.2 %/V
I
BMD
FS Accuracy 1.5 %