ADN2848ACPZ-32-RL7 Analog Devices Inc, ADN2848ACPZ-32-RL7 Datasheet - Page 11

IC,Laser Diode/LED Driver,LLCC,32PIN,PLASTIC

ADN2848ACPZ-32-RL7

Manufacturer Part Number
ADN2848ACPZ-32-RL7
Description
IC,Laser Diode/LED Driver,LLCC,32PIN,PLASTIC
Manufacturer
Analog Devices Inc
Type
Laser Diode Driver (Fiber Optic)r
Datasheet

Specifications of ADN2848ACPZ-32-RL7

Data Rate
1.25Gbps
Number Of Channels
1
Voltage - Supply
3 V ~ 3.6 V
Current - Supply
50mA
Current - Modulation
80mA
Current - Bias
100mA
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VFQFN, CSP Exposed Pad
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Average Power = 0 dBm, Extinction Ratio = 10 dB, PRBS 31 Pattern,
Figure 10. A 1.244 Mbps Optical Eye. Temperature at 25°C.
MPD
1 Gb Ethernet Mask. Eye Obtained Using a DFB Laser.
NOTES
*
**
DESIGNATES COMPONENTS THAT NEED TO BE OPTIMIZED FOR THE TYPE OF LASER USED.
FOR DIGITAL PROGRAMMING. THE ADN2850 OR THE ADN2860 OPTICAL SUPERVISOR CAN BE USED.
LD = LASER DIODE
MPD = MONITOR PHOTODIODE
LD
10µH
*
*
*
V
*
*
*
CC
*
R
Z
V
*
CC
*
25
32
1.5kΩ
V
IMODN
GND2
IMODP
GND2
GND2
I
CCBIAS
BIAS
CC
24
1
2
Figure 9. AC-Coupled 50 Mbps to 1.25 Gbps Test Circuit, Data Not Clocked
15kΩ
ADN2848
**
1kΩ
**
ALS
Rev. A | Page 11 of 12
1.5kΩ
10nF
PAVCAP
DATAN
ERCAP
DATAP
17
CLKN
GND1
8
CLKP
V
CC
10nF
1
GND
16
9
Average Power = 0 dBm, Extinction Ratio = 10 dBm, PRBS 31 Pattern,
Figure 11. A 1.244 Mbps Optical Eye. Temperature at 85°C.
1µF
1µF
10nF
EACH V
AS POSSIBLE TO THE ACTUAL SUPPLY PINS ON THE
ADN2848 AND THE LASER DIODE USED.
CONSERVATIVE DECOUPLING WOULD INCLUDE 100pF
CAPACITORS IN PARALLEL WITH 10nF CAPACITORS.
1 Gb Ethernet Mask. Eye Obtained Using a DFB Laser.
10nF
10nF
10nF
10nF
CC
10nF
SHOULD HAVE BYPASS CAPACITORS AS CLOSE
CLKN
CLKP
DATAP
DATAN
FAIL
DEGRADE
+
10µF
ADN2848

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