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MAX2104

更新时间： 2024-11-23 22:55:27

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
9页	149K
描述
Direct-Conversion Tuner IC for Digital DBS Applications

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MAX2104 数据手册

19-1431; Rev 3; 12/01

Direct-Conversion Tuner IC for

Digital DBS Applications

General Description

Features

The MAX2104 low-cost direct-conversion tuner IC is

designed for use in digital direct-broadcast satellite

(DBS) television set-top box units. Its direct-conversion

architecture reduces system cost compared to devices

with IF-based architectures. The MAX2104 directly con-

verts L-band signals to baseband signals using a

broadband I/Q downconverter. The operating frequency

range extends from 925MHz to 2175MHz.

ꢀ Low-Cost Architecture

ꢀ Operates from Single 5V Supply

ꢀ 925MHz to 2175MHz Input Frequency Range

ꢀ On-Chip Quadrature Generator, Dual-Modulus

Prescaler (/32, /33)

ꢀ On-Chip Crystal Amplifier

The IC includes an LNA gain control, I and Q downcon-

verting mixers, lowpass filters with gain control and fre-

quency control, a local oscillator (LO) buffer with a 90°

quadrature network, and a charge-pump based PLL for

frequency control. The MAX2104 also has an on-chip

LO, requiring only an external varactor-tuned LC tank

for operation. The output of the LO drives the internal

quadrature generator and dual modulus prescaler. An

on-chip crystal amplifier drives a reference divider as

well as a buffer amplifier to drive off-chip circuitry. The

MAX2104 is offered in a 48-pin TQFP-EP package.

ꢀ PLL Mixer with Gain-Controlled Charge Pump

ꢀ Input Levels: -25dBm to -65dBm per Carrier

ꢀ Over 40dB Gain Control Range

ꢀ Noise Figure = 11.5dB; IIP3 = 7dBm (at 1550MHz)

ꢀ Automatic Baseband Offset Correction

ꢀ Loopthrough Replaces External Splitter

ꢀ Crystal Output Buffer

Applications

DirecTV, PrimeStar, EchoStar DBS Tuners

DVB-Compliant DBS Tuners

Broadband Systems

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX2104CCM*

0°C to +70°C

48 TQFP-EP

*Contact factory for availability.

LMDS

Functional Diagram appears at end of data sheet.

Pin Configuration

TOP VIEW

36 PLLIN-

35 PLLIN+

34 MOD-

33 MOD+

32 GND

CFLT

XTL-

XTL+

GND

31 IOUT+

30 IOUT-

MAX2104

RFIN-

RFIN+

GND

28 QOUT+

27 QOUT-

26 FDOUB

25 FLCLK

GND 10

QDC- 11

QDC+ 12

TQFP

________________________________________________________________ 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...9

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与MAX2104相关器件

型号	品牌	获取价格	描述	数据表
MAX2104_05	MAXIM	获取价格	Direct-Conversion Tuner IC for Digital DBS Applications
MAX2104CCM	MAXIM	获取价格	PLASTIC ENCAPSULATED DEVICES
MAX2104CCM	ROCHESTER	获取价格	RF/MICROWAVE DOWN CONVERTER, 7 X 7 MM, 1 MM HEIGHT, MS-026ABA-HD, TQFP-48
MAX2104CCM*	MAXIM	获取价格	Direct-Conversion Tuner IC for Digital DBS Applications
MAX2104CCM+	MAXIM	获取价格	Direct-Conversion Tuner IC for Digital DBS Applications
MAX2104CCM+D	MAXIM	获取价格	Down Converter, 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, MO-026ABA-HD, TQFP-48
MAX2104CCM+TD	MAXIM	获取价格	Down Converter, 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, MO-026ABA-HD, TQFP-48
MAX2104CCM-D	ROCHESTER	获取价格	RF/MICROWAVE DOWN CONVERTER, 7 X 7 MM, 1 MM HEIGHT, MS-026ABA-HD, TQFP-48
MAX2104CCM-TD	MAXIM	获取价格	Down Converter, 7 X 7 MM, 1 MM HEIGHT, MS-026ABA-HD, TQFP-48
MAX2105	MAXIM	获取价格	Direct-Conversion Tuner ICs for Digital DBS Applications

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