参数资料
型号: ADN2848ACPZ-32
厂商: Analog Devices Inc
文件页数: 11/12页
文件大小: 0K
描述: IC LASER DRIVER 1.25GBPS 32LFCSP
标准包装: 1
类型: 激光二极管驱动器(光纤)
数据速率: 1.25Gbps
通道数: 1
电源电压: 3 V ~ 3.6 V
电流 - 电源: 50mA
电流 - 调制: 80mA
电流 - 偏置: 100mA
工作温度: -40°C ~ 85°C
封装/外壳: 32-VFQFN 裸露焊盘,CSP
供应商设备封装: 32-LFCSP-VQ(5x5)
包装: 托盘
安装类型: 表面贴装
Data Sheet
ALS
FAIL
ADN2848
V CC
*
1k?
DEGRADE
*
*
*
*
1.5k?
24
15k?
17
V CC
*
V CC
25
V CC 2
CLKN
16
10nF
CLKN
IMODN
CLKP
10nF
CLKP
MPD
LD
GND2
IMODP
GND1
DATAP
10nF
DATAP
*
*
GND2
ADN2848
DATAN
DATAN
*
10nF
GND2
V CC 1
1μF
10μH
I BIAS
CCBIAS
PAVCAP
ERCAP
R Z
V CC
32
1
8
9
1μF
EACH V CC SHOULD HAVE BYPASS CAPACITORS AS CLOSE
AS POSSIBLE TO THE ACTUAL SUPPLY PINS ON THE
ADN2848 AND THE LASER DIODE USED.
**
**
1.5k?
CONSERVATIVE DECOUPLING WOULD INCLUDE 100pF
CAPACITORS IN PARALLEL WITH 10nF CAPACITORS.
V CC
LD = LASER DIODE
MPD = MONITOR PHOTODIODE
10nF
10nF
10nF
10nF
+
10μF
GND
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.
Figure 9. AC-Coupled 50 Mbps to 1.25 Gbps Test Circuit, Data Not Clocked
Figure 10. A 1.244 Mbps Optical Eye. Temperature at 25°C.
Average Power = 0 dBm, Extinction Ratio = 10 dB, PRBS 31 Pattern,
1 Gb Ethernet Mask. Eye Obtained Using a DFB Laser.
Figure 11. A 1.244 Mbps Optical Eye. Temperature at 85°C.
Average Power = 0 dBm, Extinction Ratio = 10 dBm, PRBS 31 Pattern,
1 Gb Ethernet Mask. Eye Obtained Using a DFB Laser.
Rev. B | Page 11 of 12
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