参数资料
型号: XRT91L80IB
厂商: Exar Corporation
文件页数: 25/46页
文件大小: 0K
描述: IC TXRX SONET/SDH 4BIT 196STBGA
产品变化通告: XRT91L80IB Obsolescence 6/Sept/2010
标准包装: 126
类型: 收发器
规程: SONET/SDH
电源电压: 3.3V
安装类型: 表面贴装
封装/外壳: 196-LFBGA
供应商设备封装: 196-STBGA(12x12)
包装: 托盘
xr
XRT91L80
REV. 1.0.0
2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
23
3.8
External Loop Filter
As shown in Figure 13, there is an internal charge pump used to drive an external loop filter and external
VCXO. The charge pump current is fixed at 250uA. Figure 14 is a simplified block diagram of the external loop
filter and recommended values.
FIGURE 14. SIMPLIFIED DIAGRAM OF THE EXTERNAL LOOP FILTER
3.9
Transmit Serial Output Control
The 2.488/2.666 Gbps transmit serial output is avaliable on TXOP/N pins. The transmit serial output can be AC
or DC coupled to an optical module or electrical interface. A simplified AC coupling block diagram is shown in
Figure 15.
NOTE: Some optical modules integrate AC coupled capacitors within the module. If so, the external AC coupled capacitors
are not necessary and can be excluded.
FIGURE 15. TRANSMIT SERIAL OUTPUT INTERFACE BLOCK
300pF
1uF
CPOUT
VCXO
4.02k
XRT91L80
STS-48/
STM-16
Transceiver
Optical Module
0.1
F
0.1
F
TXOP
TXON
Optical Fiber
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相关代理商/技术参数
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XRT91L80IB-F 功能描述:总线收发器 Transceiver RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel
XRT91L81 制造商:EXAR 制造商全称:EXAR 功能描述:2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L81IB 制造商:EXAR 制造商全称:EXAR 功能描述:2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L82 制造商:EXAR 制造商全称:EXAR 功能描述:2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L82ES 功能描述:总线收发器 Transceiver RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel