Datasheet > 155T-70

155T-70

更新时间： 2024-11-06 19:50:19

品牌	Logo	应用领域
APITECH		衰减器射频微波
页数	文件大小	规格书
5页	159K
描述
Variable Attenuator, 0MHz Min, 8000MHz Max, 1.5dB Insertion Loss-Max,

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155T-70 技术参数

生命周期：	Active	Reach Compliance Code：	compliant
风险等级：	5.23	其他特性：	CMOS COMPATIBLE
标称衰减：	70 dB	特性阻抗：	50 Ω
构造：	MODULE	最大输入功率 (CW)：	30 dBm
最大插入损耗：	1.5 dB	最大工作频率：	8000 MHz
最小工作频率：		最高工作温度：	70 °C
最低工作温度：	-20 °C	射频/微波设备类型：	VARIABLE ATTENUATOR
最大电压驻波比：	1.5	Base Number Matches：	1

155T-70 数据手册

Weinschel

C O R P O R A T I O N

Model 150T

Model 151T

Model 152T

Model 155T

dc to 18.0 GHz

dc to 4.0 GHz

dc to 26.5 GHz

dc to 8.0 GHz

SmartStep Programmable Attenuators

Greatly Simplifies OEM & System Design!

cells and a internal TTL interface. The attenuator elements

located in the attenuator cell are created by a thin-film

process which provides exceptional long-term stability, low

power and temperature coefficients. This series of step

attenuators uses a reed switching structure that provides

rapid switching together with low insertion loss.

BUILT-IN SMARTSTEP DRIVER CIRCUITRY:

These

SmartStep attenuators feature an internal microcontroller-

based driver that provides a TTL-level digital interface for

control of the attenuator relays. This card simplifies opera-

tion and interfacing requirements, while at the same time

providing for greatly enhanced flexibility over past designs.

User-selectable modes of operation include both parallel

and serial I²C bus. The parallel mode provides a simple,

one-bit per relay on/off control with internal pullups for use

primarily in single attenuator applications. This mode allows

the attenuator to be controlled via a variety of methods,

such as a TTL-level digital output port, or mechanical toggle

switches. The I²C mode provides a two-wire serial bus

structure and protocol for connecting a number of devices to

a single host control interface, suitable for use in larger sys-

tem and sub-system applications. The SmartStep contains

non-volatile configuration memory that is used to hold a

wide variety of attenuator and driver-dependant parame-

ters, including serial number, attenuator cell dB values,

relay configurations, and switching requirements, which are

all accessable via the I²C interface. This frees the system

designer from such low-level details, allowing faster inte-

gration. In either operational mode, the microcontroller

enters an idle condition during periods of inactivity, turning

off all on-board clocks, reducing EMI concerns, and lower-

ing power consumption. On-board regulation for the digital

circuitry allows the SmartStep to operate from a single input

supply voltage.

Description

Weinschel Corporation introduces a new generation of intel-

ligent programmable step attenuators with a built-in TTL

interface (Figure 1). These models are designed to simplify

the control and integration of these devices into subsystem

and bench applications. These intelligent attenuators offer

the same long reliable operation with exceptional accuracy

and repeatability as with our other 150 Series

Programmable Attenuators. They provide programmable

adjustments of RF signal levels in precise steps of 1 dB, 5

dB, 10 dB, or with custom steps available. Each attenuator

consists of a cascaded assembly of switched attenuator

Non-Volatile

Configuration

Memory

TTL/CMOS

Compatible

Digital Interface

Single-Chip

Microcontroller

Other features include:

Wide Variety of Frequency & Attenuation Ranges

Broadband Frequency Coverage

High Accuracy and Repeatability

Long Life, 5 Million Cycles Per Cell

Common 14 pin Interface Connector

Custom Attenuation Ranges

Relay

Drivers

Attenuator

Relays

+5 V

Regulator

+12 to

+15 V

Input

EMI

Filters

DC-DC

Converter

Figure 1. SmartStep Driver Circuitry

For additional information on the 150 Series, visit our website @ www.weinschel.com/programmable.htm

162

2/14/00

5305 Spectrum Drive, Frederick, MD 21703-7362 ! TEL: 301-846-9222, 800-638-2048 ! Fax: 301-846-9116

web: www.weinschel.com ! email: sales@weinschel.com

12 3 4 5

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与155T-70相关器件

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155X-160-HB20	RCD	获取价格	Fixed Resistor, Wire Wound, 4W, 16ohm, 210V, 3% +/-Tol, 20ppm/Cel,
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