MAX2450CEP+

更新时间： 2024-11-16 13:10:27

品牌	Logo	应用领域
美信 - MAXIM		射频调制器射频解调器微波调制器微波解调器射频和微波
页数	文件大小	规格书
8页	109K
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数据手册

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MAX2450CEP+ 数据手册

19-0455; Rev 1; 9/98

3 V, Ult ra -Lo w -P o w e r Qu a d ra t u re

Mo d u la t o r/De m o d u la t o r

MAX2450

Ge n e ra l De s c rip t io n

____________________________Fe a t u re s

The MAX2450 combines a quadrature modulator and

quadrature demodulator with a supporting oscillator and

divide-by-8 prescaler on a monolithic IC. It operates

from a single +3V supply and draws only 5.9mA. The

demodulator accepts an amplified and filtered IF signal

in the 35MHz to 80MHz range, and demodulates it into I

and Q baseband signals with 51dB of voltage conver-

sion gain. The IF input is terminated with a 400Ω thin-

film resistor for matching to an external IF filter. The

baseband outputs are fully differential and have 1.2Vp-p

signal swings. The modulator accepts differential I and

Q baseband signals with amplitudes up to 1.35Vp-p

and bandwidths to 15MHz, and produces a differential

IF signal in the 35MHz to 80MHz range.

♦ Combines Quadrature Modulator and

Demodulator

♦ Integrated Quadrature Phase Shifters

♦ On-Chip Oscillator (Requires External Tuning

Circuit)

♦ On-Chip Divide-by-8 Prescaler

♦ Modulator Input Bandwidth Up to 15MHz

♦ Demodulator Output Bandwidth Up to 9MHz

♦ 51dB Demodulator Voltage Conversion Gain

♦ CMOS-Compatible Enable

♦ 5.9mA Operating Supply Current

Pulling the CMOS-compatible ENABLE pin low shuts

down the MAX2450 and reduces the supply current to

less than 1µA. To minimize spurious feedback, the

MAX2450’s internal oscillator is set at twice the IF via

external tuning components. The oscillator and associ-

ated phase shifters produce differential signals exhibit-

ing low a mp litud e a nd p ha s e imb a la nc e , yie ld ing

modulator sideband rejection of 38dB. The MAX2450

comes in a QSOP package.

1µA Shutdown Supply Current

Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

PIN-PACKAGE

MAX2450CEP

0°C to +70°C

20 QSOP

Ap p lic a t io n s

Digital Cordless Phones

Fu n c t io n a l Dia g ra m

GSM and North American Cellular Phones

Wireless LANs

I _OUT

Digital Communications

I_OUT

DEMODULATOR

Two-Way Pagers

IF_IN

BIAS

P in Co n fig u ra t io n

Q_OUT

400Ω

TOP VIEW

IF_OUT

GND

IF_IN

GND

0°

÷ 2

÷ 4

LO_V

PRE_OUT

PRESCALER

TANK

QUADRATURE

PHASE

GENERATOR

18 CC

I_IN

I_OUT

90°

÷ 2

LOCAL

OSCILLATOR

LO_GND

MAX2450

I_IN

I_OUT

Q_OUT

LO_GND

TANK

I_IN

Q_IN

IF_OUT

MODULATOR

ENABLE

PRE_OUT

Q_IN

MASTER BIAS

BANDGAP BIAS

LO_V

TANK

3, 19

GND

QSOP

ENABLE

________________________________________________________________ Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

12 3 4 5 6 7 8

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与MAX2450CEP+相关器件

型号	品牌	获取价格	描述	数据表
MAX2450CEP-T	MAXIM	获取价格	Modulator/Demodulator, Quadraphase, 70MHz Min, 160MHz Max,
MAX2450CWP	MAXIM	获取价格	Telecommunication IC
MAX2451	MAXIM	获取价格	3V, Ultra-Low-Power Quadrature Demodulator
MAX24510EXG2	MICROSEMI	获取价格	Clock Generator,
MAX2451CSE	MAXIM	获取价格	3V, Ultra-Low-Power Quadrature Demodulator
MAX2451CSE+T	MAXIM	获取价格	Demodulator, Quadraphase, 70MHz Min, 160MHz Max
MAX2451CSE-T	MAXIM	获取价格	Demodulator, Quadraphase, 70MHz Min, 160MHz Max
MAX2452	MAXIM	获取价格	3V, Ultra-Low-Power Quadrature Modulator
MAX2452CSE	MAXIM	获取价格	Telecommunication IC
MAX2452EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX2450/MAX2451/MAX2452

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