MC145750

更新时间： 2024-10-01 22:58:11

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		编码器
页数	文件大小	规格书
12页	299K
描述
QPSK Encoder

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数据手册

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MC145750 数据手册

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SEMICONDUCTOR TECHNICAL DATA

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VFU SUFFIX

PLASTIC VQFP

CASE 932

The MC145750 is a silicon gate HCMOS device designed to encode π/4–shift

QPSK baseband signals. The device contains two 10–bit DACs for the I/Q

signal, Root–Nyquist digital filtering, and burst rising and falling edge

processing for digital RF communication equipment. Primary applications for

this device are in products that will be used in PHS (384 kbps) and PDC

(42 kbps). It will perform up to 800 kbps data rate. It also contains PN511

random pattern generator and timing generator with PLL.

ORDERING INFORMATION

MC145750VFU VQFP

•

Root–Nyquist Digital Filtering (Coefficient = 0.5)

Burst Edge Processing Circuitry (Ramp–Up and –Down)

Two 10–Bit DACs for I/Q Output

Operating Voltage Range: 2.7 to 5.5 V

PN511 Random Pattern Generator

Conformance to RCR Standard for PHS, PDC

Variable Data Transmission Rate up to 800 kbps (V

Timing Generator with PLL

= 5 V)

QPSK Mode, Burst, and Continuous I/Q Signal Output is Performed

Companion Device is MRFIC0001

PIN ASSIGNMENT

PB1

PCO

PLL

TB7

TNO/TB8

BW/TB9

out

DAref3

DAref2

ECLK

DAref1

DAref

DCLK

DS/STBY

TXD

DAV

out

DAV

ERST/PDN

NC = NO CONNECTION

This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.

REV 2

10/95

Motorola, Inc. 1995

MOTOROLA

MC145750

12 3 4 5 6 7...12

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