收藏本站
参数资料
型号： DS26504LNB2+
厂商： Maxim Integrated Products
文件页数： 111/129页
文件大小： 0K
描述： IC T1/E1/J1 64KCC ELEMENT 64LQFP
产品培训模块： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装： 160
功能： BITS 元件
接口： 64KCC，E1，T1
电路数： 1
电源电压： 3.14 V ~ 3.47 V
电流 - 电源： 150mA
工作温度： -40°C ~ 85°C
安装类型： 表面贴装
封装/外壳： 64-LQFP
供应商设备封装： 64-LQFP（10x10）
包装： 管件
包括： *
其它名称： 90-26504+NB2
DS26504 T1/E1/J1/64KCC BITS Element
82 of 129
13.2.2 Receive G.703 Section 13 Synchronization Signal
The DS26504 can receive a 2.048MHz square-wave synchronization clock as specified in Section 13 of
ITU G.703. To use the DS26504 in this mode, set the mode configuration bits in the Mode Configuration
Register (MCREG).
13.2.3 Monitor Mode
Monitor applications in both E1 and T1 require various flat-gain settings for the receive-side circuitry.
The DS26504 can be programmed to support these applications via the monitor mode control bits MM1
and MM0 in the LIC3 register.
Figure 13-2. Typical Monitor Application
PRIMARY
T1/E1 TERMINATING
DEVICE
MONITOR
PORT JACK
T1/E1 LINE
X
F
M
R
DS26504
Rt
Rm
SECONDARY T1/E1
TERMINATING
DEVICE
13.3 LIU Transmitter
The DS26504 uses a phase-lock loop along with a precision digital-to-analog converter (DAC) to create
the waveforms that are transmitted onto the E1 or T1 line. The waveforms created by the DS26504 meet
the latest ETSI, ITU, ANSI, and AT&T specifications. The waveform that is to be generated is set by the
transmit mode bits (TMODE[3:0]) in the MCREG register, as well as the L2/L1/L0 bits in register LIC1
if applicable.
ITU specification G.703 requires an accuracy of ±50ppm for both T1 and E1. TR62411 and ANSI specs
require an accuracy of ±32ppm for T1 interfaces. The transmit clock can be sourced from the recovered
clock (RCLK), the pre-scaled MCLK, the TCLK pin, or the TX PLL. See the TX PLL clock mux
diagram in Figure 3-3. Due to the nature of the design of the transmitter in the DS26504, very little jitter
(less than 0.005UIP-P broadband from 10Hz to 100kHz) is added to the jitter present on the selected
transmit clock source. Also, the waveforms created are independent of the duty cycle of TCLK. The
transmitter in the DS26504 couples to the transmit twisted pair (or coaxial cable in some applications) via
a 1:2 step-up transformer. For the device to create the proper waveforms, the transformer used must meet
the specifications listed in Table 13-3. The DS26504 has the option of using software-selectable transmit
termination.
相关PDF资料
PDF描述
DS26514G+ IC TXRX T1/E1/J1 4PORT 256-CSBGA
DS26518NB1+ IC TXRX T1/E1/J1 8PORT 256-CSBGA
DS26519GN+ IC TXRX T1/E1/J1 16PRT 484-HSBGA
DS26521L+ IC TXRX T1/E1/J1 64-LQFP
DS26522GN+ IC TXRX T1/E1/J1 DUAL 144CSBGA
相关代理商/技术参数
参数描述
DS26504LNB2+ 功能描述:网络控制器与处理器 IC E1/T1/J1/64Kcc Bits Element RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS26514 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:4-Port T1/E1/J1 Transceiver Fully Internal Impedance Match, No External Resistor
DS26514_11 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:4-Port T1/E1/J1 Transceiver Fully Internal Impedance Match, No External Resistor
DS26514DK 功能描述:网络开发工具 DS26514 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V
DS26514G 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*