Datasheet > IMP5115CDT

IMP5115CDT

更新时间： 2024-01-08 12:11:31

品牌	Logo	应用领域
IMP		接口集成电路光电二极管信息通信管理
页数	文件大小	规格书
6页	196K
描述
9-Line SCSI Ter erminat minator

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中文翻译

获取价格

技术参数
数据手册

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IMP5115CDT 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.68
Is Samacsys：	N	Base Number Matches：	1

IMP5115CDT 数据手册

IMP51115

Application Information

Figure 1. Receiving Waveform – 20MHz

Figure 2. Driving Waveform – 20MHz

Receiver

Driver

1 Meter, AWG 28

IMP5115

5115_03.eps

Figure 3.

Acting as a near ideal line terminator, the IMP5115 closely repro-

duces the optimum case when the device is enabled. To enable the

device the Disable pin must be driven LOW. When enabled,

quiescent current is 6mA and the device will respond to line

demands by delivering 24mA on assertion and by imposing 2.85V

on de-assertion.

IMP5115 Maximizes Line Current

Cable transmission theory suggests to optimize signal speed and

quality, the termination should act both as an ideal voltage refer-

ence when the line is released (deasserted) and as an ideal

current source when the line is active (asserted). Common active

terminators which consist of linear regulators in series with resis-

tors (typically 110Ω) are a compromise. With coventional linear

terminators as the line voltage increases the amount of current

decreases linearly by the equation;

Disable/ Sleep Mode

Disable mode places the device in a sleep state, where quiescent

current typically 375µA. When disabled, all outputs are in a high

impedance state. Sleep mode can be used for power conservation

or to remove the terminator from the SCSI chain.

_REF− V

(

)

= I.

LINE

An additional feature of the IMP5115 are their compatibility with

active negation drivers.

The IMP5115, with its unique new architecture, applies the maxi-

mum amount of current regardless of line voltage until the

termination high threshold (2.85V) is reached.

Table 1. Power Up/ Power Down Function Table

Disable

Outputs

Quiescent Current

Enabled

Disabled/High Impedance

Enabled

6mA

375µA

Open

6mA

5115_t04.eps

408-432-9100/ www.impweb.com

1 2 345 6

中文翻译

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