MAX3505

更新时间： 2024-10-30 23:46:11

品牌	Logo	应用领域
美信 - MAXIM		放大器有线电视
页数	文件大小	规格书
12页	374K
描述
Upstream CATV Amplifier

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MAX3505 数据手册

19-2351; Rev 0; 4/02

Upstream CATV Amplifier

General Description

Features

ꢀ Single 5V Supply Operation

The MAX3505 programmable power amplifier is

designed for use in CATV upstream applications. The

MAX3505 drives 64dBmV (QPSK) into a 75Ω load when

driven with a 34dBmV nominal input signal. Both input

and output ports are differential, requiring that an exter-

nal balun be used at the output port. The variable gain

feature provides greater than 56dB of dynamic range,

which is controlled by an SPI™ 3-wire interface. Gain

control is available in 0.5dB steps. The device operates

over a frequency range of 5MHz to 65MHz. The

MAX3505 is internally matched for use with a 1:1 balun.

ꢀ Accurate Gain Control, ±±1d oꢀer 5ꢁ1d ꢂange

ꢀ Gain Programmable in 0.51d Steps

ꢀ -551dc Harmonic Distortion at ꢁ5MHz

ꢀ Low durst On/Off Transient

This device operates from a single 5VDC supply and

draws 285mA during transmit (100% duty cycle,

64dBmV out). The bias current is automatically adjust-

ed based on the output level to increase efficiency.

Additionally, the device can be disabled between

bursts to minimize noise and save power while still

maintaining a match at the output port. In addition, a

shutdown mode is available to disable all circuitry and

reduce current consumption to 5µA (typ).

Ordering Information

PAꢂT

TEMP ꢂANGE PIN-PACKAGE

MAX3505EGP -40°C to +85°C 20 QFN-EP* (5mm × 5mm)

*EP = exposed pad

The MAX3505 is available in a 20-pin QFN package.

The device operates in the extended industrial temper-

ature range (-40°C to +85°C).

Applications

DOCSIS/EuroDOCSIS and DVB Cable

Modems

Pin Configuration

OpenCable Set-Top Box

Telephony Over Cable

CATV Status Monitor

TOP VIEW

SPI is a trademark of Motorola, Inc.

DOCSIS/EuroDOCSIS/OpenCable are trademarks of CableLabs.

Typical Operating Circuit

IN+

GND

IN-

14 OUT+

13 N.C.

12 OUT-

11 N.C.

SHDN

0.1µF

CONTROL

LOGIC

TXEN

IN+

MAX3505

1:1

0.001µF

OUT+

OUTPUT

GND

ANTI-ALIAS

FILTER

INPUT

MAX3505

OUT-

IN-

0.1µF

+5V

0.1µF

CEXT

GND

QFN**

SDA

SCLK

CONTROL

LOGIC

**NOTE: THE EXPOSED PAD MUST BE SOLDERED TO GROUND.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...12

中文翻译

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与MAX3505相关器件

型号	品牌	获取价格	描述	数据表
MAX3505EGP	MAXIM	获取价格	Upstream CATV Amplifier
MAX3505EGP-T	MAXIM	获取价格	暂无描述
MAX3505EVKIT	MAXIM	获取价格	Evaluation Kits for the MAX3503/MAX3505
MAX3507	MAXIM	获取价格	Upstream CATV Amplifier with On-Chip Anti-Alias Filter
MAX3507_1	MAXIM	获取价格	Evaluation Kit
MAX3507EGI	MAXIM	获取价格	Upstream CATV Amplifier with On-Chip Anti-Alias Filter
MAX3507EGI+	MAXIM	获取价格	Telecom Circuit, 1-Func, PQCC28, 5 X 5 MM, 0.90 MM HEIGHT, QFN-28
MAX3507EGI+T	MAXIM	获取价格	Telecom Circuit, 1-Func, PQCC28, 5 X 5 MM, 0.90 MM HEIGHT, QFN-28
MAX3507EGI-T	MAXIM	获取价格	Telecom Circuit, 1-Func, PQCC28, 5 X 5 MM, 0.90 MM HEIGHT, QFN-28
MAX3507EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX3507

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