Datasheet > HSP50307_00

HSP50307_00

更新时间： 2024-11-15 04:22:23

品牌	Logo	应用领域
英特矽尔 - INTERSIL		/
页数	文件大小	规格书
9页	237K
描述
Burst QPSK Modulator

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

HSP50307_00 数据手册

HSP50307

Burst QPSK Modulator

October 2000

Features

Description

• 256 KBPS Data Rate and 128 KBPS Baud Rate

The HSP50307 is a mixed signal burst QPSK Modulator for

upstream CATV Applications. The HSP50307 demultiplexes

and modulates a serial data stream onto an RF Carrier cen-

tered between 8 and 15MHz. The signal spectrum is shaped

with α = 0.5 root raised cosine (RRC) digital filters. On-chip fil-

tering limits spurs and harmonics to levels below -35dBc dur-

ing transmissions. The output power level is adjustable over a

40dB range in 1dB steps. The maximum differential output

level is +62dBmV into 75Ω. A transmitter inhibit function dis-

ables the RF output outside the burst interval. The differential

output amplifier int7-erfaces to the cable via a transformer.

• Burst QPSK Modulation

• Programmable Carrier Frequency from 8MHz to

15MHz With a Frequency Step Size of 32kHz

• α = 0.5 Root Raised Cosine (RRC) Filtering For Spec-

trum Shaping

• On-Board Synthesizer

• Programmable Output Level From 22 to 62dBmV in

1dB Steps

The Block Diagram of the HSP50307 QPSK Modulator is

shown below. The HSP50307 consists of a digital control

interface, an I/Q generator, a synthesizer, and a quadrature

modulator.

• Programmable Charge Pump Current Control

• 62dBmV Differential Output Driver for 75Ω Cable

The data clock is derived from the master clock. The

HSP50307 demultiplexes the input data bits into in-phase (I)

and quadrature (Q) data streams. The first bit and subsequent

alternating bits of the burst are in-phase data. The two data

streams are filtered, converted from digital to analog, and low

pass filtered to produce the baseband I and Q analog signals.

The baseband signals are up-converted to RF in the Quadra-

ture Modulation Section. The synthesizer provides the local

oscillator (LO) for the quadrature modulator. The frequency is

programmable via the control interface with a resolution of

32kHz. The output of the quadrature modulator is low pass fil-

tered to remove harmonic distortion.

Applications

• Burst QPSK Modulator

• HSP50307EVAL1 Evaluation Board Is Available

Ordering Information

TEMP.RANGE

PKG.

NO.

PART NUMBER

( C)

PACKAGE

HSP50307SC

0 to 70

28 Ld SOIC

M28.3

Block Diagram

RCLK VCO_IN VCO_SET PD_OUT

RESET

†

QUADRATURE

MODULATOR

CCLK

CONTROL

†

QUAD

GEN

INTERFACE

C_EN

SYNTHESIZER

CDATA

TX_EN

I/Q GENERATOR

†

MOD_OUT-

MOD_OUT+

8RRC

D/A

LPF

TX_DATA

LPF

PGA

TX_EN

8RRC

TXCLK

MCLK

/100

DAC_REF

MCLK MUST ALWAYS BE PRESENT FOR PROPER OPERATION

VCM_REF

† Indicates analog circuitry.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

FN4219.1

^{1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersi}1^{l Americas Inc.}

12 3 4 5 6 7...9

中文翻译

下载PDF

与HSP50307_00相关器件

型号	品牌	获取价格	描述	数据表
HSP50307EVAL1	INTERSIL	获取价格	2.0GHz to 2.7GHz DownConverter
HSP50307SC	INTERSIL	获取价格	Burst QPSK Modulator
HSP50415	INTERSIL	获取价格	Wideband Programmable Modulator (WPM)
HSP50415_07	INTERSIL	获取价格	Wideband Programmable Modulator (WPM)
HSP50415EVAL1	INTERSIL	获取价格	HSP50415EVAL1 Evaluation Kit
HSP50415VI	INTERSIL	获取价格	Wideband Programmable Modulator (WPM)
HSP50415VIZ	INTERSIL	获取价格	Wideband Programmable Modulator (WPM)
HSP50A	JLWORLD	获取价格	SPEAKER SOUND GENERATORS
HSP50B	JLWORLD	获取价格	SPEAKER SOUND GENERATORS
HSP50E	JLWORLD	获取价格	Specification for other impedance is available upon request

与HSP50307_00相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

7
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

4
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

30
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

13

产品中心

服务支持

精选活动

关于我们

帮助中心

HSP50307_00

HSP50307_00 数据手册

与HSP50307_00相关器件

与HSP50307_00相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

HSP50307_00

HSP50307_00 数据手册

与HSP50307_00相关器件

与HSP50307_00相关文章

您还可以找

您在本页遇到什么问题？