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ADN2848 Datasheet(PDF) 2 Page - Analog Devices

Part No. ADN2848
Description  3 V Dual-Loop 50 Mbps to 1.25 Gbps Laser Diode Driver
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADN2848 Datasheet(HTML) 2 Page - Analog Devices

 
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REV. 0
–2–
ADN2848–SPECIFICATIONS
NOTES
1Temperature range is as follows: –40
°C to +85°C.
2Measured into a 25
Ω load using a 0-1 pattern at 622 Mbps.
3When the voltage on DATAP is greater than the voltage on DATAN, the modulation current flows in the IMODP pin.
4Guaranteed by design and characterization. Not production tested.
5I
CCMIN for power calculation on page 6 is the typical I CC given.
6All V
CC pins should be shorted together.
Specifications subject to change without notice.
(VCC = 3.0 V to 3.6 V. All specifications TMIN to TMAX, unless otherwise noted.
1
Typical values as specified at 25 C.)
Parameter
Min
Typ
Max
Unit
Conditions/Comments
LASER BIAS (BIAS)
Output Current IBIAS
2
100
mA
Compliance Voltage
1.2
VCC
V
IBIAS During ALS
0.1
mA
ALS Response Time
5
sIBIAS < 10% of nominal
CCBIAS Compliance Voltage
1.2
VCC
V
MODULATION CURRENT (IMODP, IMODN)
Output Current IMOD
580
mA
Compliance Voltage
1.5
VCC
V
IMOD During ALS
0.1
mA
Rise Time
2
80
170
ps
Fall Time
2
80
170
ps
Random Jitter
2
1
1.5
ps
RMS
Pulsewidth Distortion
2
15
ps
IMOD = 40 mA
MONITOR PD (MPD)
Current
50
1200
AAverage Current
Compliance Voltage
1.65
V
POWER SET INPUT (PSET)
Capacitance
80
pF
Monitor Photodiode Current into RPSET Resistor
50
1200
AAverage Current
Voltage
1.1
1.2
1.3
V
EXTINCTION RATIO SET INPUT (ERSET)
Allowable Resistance Range
1.2
25
k
Voltage
1.1
1.2
1.3
V
ALARM SET (ASET)
Allowable Resistance Range
1.2
25
k
Voltage
1.1
1.2
1.3
V
Hysteresis
5
%
CONTROL LOOP
Low Loop Bandwidth Selection
Time Constant
0.22
s
LBWSET = GND
2.25
s
LBWSET = VCC
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
AC-Coupled
tSETUP
4 (see Figure 1)
50
ps
tHOLD
4 (see Figure 1)
100
ps
LOGIC INPUTS (ALS, LBWSET, CLKSEL)
VIH
2.4
V
VIL
0.8
V
ALARM OUTPUTS (Internal 30 k
Ω Pull-Up)
VOH
2.4
V
VOL
0.8
V
IBMON, IMMON, IMPDMON
IMMON Division Ratio
100
A/A
IMPDMON
1
A/A
Compliance Voltage
0
VCC – 1.2
V
SUPPLY
ICC
5
50
mA
IBIAS = IMOD = 0
VCC
6
3.0
3.3
3.6
V


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