Data Sheet ADN2848
Rev. B | Page 3 of 12
SPECIFICATIONS
V
CC
= 3.0 V to 3.6 V. All specifications T
MIN
to T
MAX
, unless otherwise noted.
1
Typical values are specified at 25°C.
Table 1.
Parameter Min Typ Max Unit Conditions/Comments
LASER BIAS Current (I
BIAS
, ALS)
Output Current I
BIAS
2 100 mA
Compliance Voltage 1.2 V
CC
V I
BIAS
I
BIAS
0.1 mA When ALS asserted
ALS Response Time 5 μs I
BIAS
< 10% of nominal
CCBIAS Compliance Voltage 1.2 V
CC
V
MODULATION CURRENT (IMODP, IMODN)
Output Current I
MOD
5 80 mA
Compliance Voltage 1.5 V
CC
V
I
MOD
0.1 mA When ALS asserted
Rise Time
2
80 170 ps
Fall Time
2
80 170 ps
Random Jitter
2
1 1.5 ps RMS
Pulse Width Distortion
2
15 ps I
MOD
= 40 mA
MONITOR PD (MPD)
Current 50 1200 μA Average current
Compliance Voltage 1.65 V
POWER SET INPUT (PSET)
Capacitance 80 pF
Monitor Photodiode Current into RPSET Resistor 50 1200 μA Average current
Voltage 1.1 1.2 1.3 V
EXTINCTION RATIO SET INPUT (ERSET)
Allowable Resistance Range 1.2 25 kΩ
Voltage 1.1 1.2 1.3 V
ALARM SET (ASET)
Allowable Resistance Range 1.2 25 kΩ
Voltage 1.1 1.2 1.3 V
Hysteresis 5 %
CONTROL LOOP Low loop bandwidth selection
Time Constant 0.22 sec LBWSET = GND
2.25 sec LBWSET = V
CC
DATA INPUTS (DATAP, DATAN, CLKP, CLKN)
3
V p-p (Single-Ended, Peak-to-Peak) 100 500 mV Data and clock inputs are
Input Impedance (Single-Ended) 50 Ω ac-coupled
t
SETUP
4
50 ps See Figure 2
t
HOLD
4
100 ps See Figure 2
LOGIC INPUTS (ALS, LBWSET, CLKSEL)
V
IH
2.4 V
V
IL
0.8 V
ALARM OUTPUTS (FAIL, DEGRADE) Internal 30 kΩ pull-up
V
OH
2.4 V
V
OL
0.8 V
IBMON, IMMON, IMPDMON
IMMON Division Ratio 100 A/A
IMPDMON 1 A/A
Compliance Voltage 0 V
CC
− 1.2 V
