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ADN2843 Datasheet(PDF) 2 Page - Analog Devices

Part No. ADN2843
Description  10.709 Gbps Laser Diode Driver Chipset
Download  12 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADN2843 Datasheet(HTML) 2 Page - Analog Devices

 
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REV. 0
–2–
ADN2843–SPECIFICATIONS
(VCC = 3.0 V to 3.6 V, All specifications TMIN to TMAX, unless otherwise noted. Typical
values as specified at 25 C.)
Parameter
Min
Typ
Max
Unit
Conditions
LASER BIAS (BIAS)
Output Current I
BIAS
380
mA
Compliance Voltage
1.2
V
CC – 1.0
V
I
BIAS during ALS
10
A
See Note 1
ALS Shutdown Response Time
10
s
MODULATION CURRENT (IMODP, IMODN)
See Note 2
Output Current I
MOD
580
mA
Compliance Voltage
1.2
V
CC
V
I
MOD during ALS
10
A
Rise Time
25
ps
Fall Time
23
ps
Random Jitter
170
fs rms
See Note 3
Total Jitter
7.41
ps p-p
See Note 4
POWER SET INPUT (PSET)
External Capacitance
80
pF
See Note 5
Voltage
1.15
1.35
V
EXTINCTION RATIO SET INPUT (ERSET)
Allowable Resistance Range
1.5
25
k
Voltage
1.15
1.35
V
ALARM SET (ASET)
Allowable Resistance Range
1.2
13.2
k
Voltage
1.15
1.35
V
Hysteresis
5
%
CONTROL LOOP
Time Constant
0.22
s
DATA INPUTS (DATAP, DATAN)
V p-p (Single-Ended Peak-to-Peak)
300
800
mV
Input Impedance (Single-Ended)
50
LOGIC INPUTS (ALS, MODE)
V
IH
2.4
V
V
IL
0.8
V
ALARM OUTPUTS (Internal 30 k to V
CC)
V
OH
2.4
V
V
OL
0.4
V
IDTONE
f
IN
10
1000
kHz
Input Current Range
50
4000
A
Voltage on IDTONE
V
CC – 2
V
MONITOR PD (MPD, MPD2)
Current
50
1200
A
Input Voltage
1.65
V
IBMON, IMMON, IMPDMON, IMPDMON2
IBMON, IMMON Division Ratio
100
A/A
IMPDMON, IMPDMON2
1
A/A
IMPDMON to IMPDMON2 Matching
2
%
Measured at 1200 A
Compliance Voltage
0
V
CC – 1.5
V
SUPPLY
V
CC
3.0
3.3
3.6
V
I
CC (ADN2844)
36
mA
See Note 6
I
CC (ADN2845)
75
mA
See Note 6
NOTES
1In ALS mode current is sourced to the laser from the I
BIAS pin, which reverse biases the laser.
2The ADN2845 high speed specifications are measured into a 5
load.
3RMS jitter measured with a 0000 0000 1111 1111 repeating pattern at 10.7 Gbps rate.
4Peak-to-peak total jitter measured with a 213 – 1 PRBS with 80 CIDs pattern at 10.7 Gbps rate.
5Max capacitance refers to capacitance of photodiode and other parasitic capacitance.
6I
BIAS = 0, IMOD = 0 (when ALS is asserted). See Power Dissipation section on page 7 for calculation of complete power dissipation.
Specifications subject to change without notice.


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