MC13146资料

Information BriefComplete Chipset Cut Costs for ISM BandCommunications Applications and Analog

Low Power CT-900 Cordless Phones

-Low cost solutions provide excellent performance

The MC13145, MC13146, and MC33411B provide all of the RF and analog

baseband functions needed for analog low power 900 MHz cordless telephones anddata applications. The only other integrated circuit required to complete an analogCT-900 phone system is an MC68HC05 microcontroller. These ICs can also be usedvery effectively in 900 MHz ISM band applications.

The MC13145 is a Low Power UHF Wideband Receiver Subsystem consisting

of an LNA, two linear mixers, Voltage Controlled Oscillator (VCO), second LocalOscillator (LO) amplifier, prescaler, IF subsystem, and a coilless detector. Thisdevice operates with a supply voltage as low as 2.7 V, and has a current drain of lessthan 32 mA. A power down mode reduces the standby drain current to less than 50 µA.

The MC13146 Low Power DC to 1.8 GHz Transmitter Subsystem features a

linear mixer with linearity control, VCO, and a dual modulus prescaler and exciter.This IC also uses a supply voltage as low as 2.7 V, and has a current drain of 25 mAat 1.8 GHz. Current drain in the powerdown mode is less than 60 µA.

The MC33411B is a 900 MHz Analog Cordless Phone Baseband System with

a complete expander/compressor for superior noise rejection, two PLLs for use withexternal VCOs and prescalers, a second LO and dual A/Ds to monitor batteryvoltage and RSSI. A variety of operational features are controlled through a serialMCU port, and power down modes can conserve power. The device is also targetedfor data radio applications.

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The MC13145, MC13146 and the MC33411B, when used with an MC68HC05MCU require minimal external components to complete an Analog CT-900 phoneor data radio.

FEATURES

MC13145 - UHF Wideband Receiver Subsystem•Low noise figure LNA with 14 dB gain

•Two 50 Ω linear mixers with linearity control•Low power 64/65 dual modulus prescaler

•Split IF for improved filtering and extended RSSI range•Internal 330 Ω terminations for 10.7 MHz filters

•Linear coilless FM/FSK demodulator is externally programmable•Low power supply voltage of 2.7 V to 6.5 V

•Low current drain of 32 mA, and power down mode at 50 µA

MC13146 - DC to 1.8 GHz Transmitter Subsystem•Low distortion exciter

•Linear mixer has 50 Ω input impedance and differential open collector output•Power conversion gain of 20 dB

•Low power 64/65 dual modulus prescaler•Usable up to 1.8 GHz

•Low power supply voltage of 2.7 V to 6.5 V

•Low current drain of 25 mA, and power down mode at 60 µAMC33411B - 900 MHz Analog Cordless Phone Baseband System•Complete expander/compressor for superior noise rejection•Two PLLs and a LO suitable for a 900 MHz system

•Full-featured transmit and receive paths

•Independent power amplifier with differential outputs and mute function•Crystal or system clock can be used as the reference frequency•Data slicer for recovered digital data

•Serial MCU port controls multiple operational features•Low battery and carrier signal (RSSI) detection•Low power supply voltage of 2.7 V to 5.5 V•Power down modes for power conservation

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TYPES OF APPLICATIONS

When used with an MC68HC05 Microcontroller, the MC13145, MC13146 and

MC33411B complete the chipset for a 900 MHz analog cordless telephone system. Onlyminimal external components are needed to complete a full CT-900 design.

The MC13145 Receiver and MC13146 Transmitter Subsystems may be used

in applications up to 1.8 GHz. The MC33411B provides the analog basebandfunctions for an Analog CT-900 phone.

The MC13145, MC13146 and MC33411B can all be used in Industrial, Scien-tific and Medical (ISM) band 900 MHz applications. Typical ISM band applicationsinclude wireless LANs, industrial remote controls, consumer wireless products,and full-duplex data radios with speeds exceeding 100 kbits/S.

BENEFITS TO YOU

•Lowers system cost and manufacturing costs by reducing component count

and circuit complexity over other solutions.

•Improved voice quality and clarity with excellent system performance.•Simplifies design with higher levels of system integration and complete

CT-900 chipset.

•Extended battery life due to low power and consumption and power down

modes on each IC.

•Maximized design flexibility and efficiency with a multitude of

programmable features that are MCU-controlled.

•Can be used in three-cell battery-powered applications with a power supply

voltage as low as 2.7 V.

•High circuit and system density with surface mount plastic packages.•Improved reliability due to low power dissipation.

•Simplified design of data radio with availability of the DRSEVS1

Demonstration and Evaluation System.

A SOLUTION FOR THESE QUESTIONS

•Do you want to lower your product costs with a low cost, highly integrated

900 MHz ISM Band chipset?

•Do you need to improve the performance of your CT-900 phones while

reducing your system cost?

•Do you want to simplify your design process with a complete chipset that

requires minimal external components?

•Do you need to extend the battery life in your 900 MHz analogcordless

phone by reducing the drain current at a supply voltage of 2.7 V?

•Do you want to reduce the parts count and lower your manufacturing costs

by using a highly integrated 900 MHz chipset?

(continued)

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A SOLUTION FOR THESE QUESTIONS (continued)

•Do you need to add a wide range of programmable features to yourcordless phone design?•Do you want to reduce the pc board area in your 900 MHz application?

LITERATURE

Complete data sheets containing full specifications, characteristic curves,circuit descriptions, pin function descriptions, application information and circuitdiagrams, as well as control bit listings for MCU-controlled programmable features areavailable through Motorola’s LDC as MC13145/D, MC13146/D, and MC33411B/D.Alternately, call Mfax at 602/244-6609 and key-in MC13145, MC13146, or MC33411B.Additional ISM band support materials are also available. An Application Note,(AN1687) entitled “A Full-Featured Wireless Interface for RS-232 Communications,”describes a full-duplex wireless data communication link for RS-232 applications. OurAN1691, entitled “Practical Solutions for Medium Data Rate Wireless Communica-tions,” examines various solutions for an inexpensive 5.0 kbit/S to 100 kbit/Spoint-to-point data link. The Motorola document DRSEVS1/D provides informa-tion on a 900 MHz, ISM band transceiver demonstration and evaluation system.

ORDERING INFORMATION

Device

MC13145FTAMC13146FTAMC33411BFTA

Operating

Temperature Range

TA = -20 to +70oC

Package

LQFP-48LQFP-24LQFP-48

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty,representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assumeany liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, includingwithout limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. Alloperating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts.Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed,intended, or authorized for use as components in systems intended for surgical implant into the body, or other applicationsintended to support or sustain life, or for any other application in which the failure of the Motorola product could create asituation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintendedor unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, anddistributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directlyor indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claimalleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and

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