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MAX2114

更新时间： 2024-11-04 23:45:55

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
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描述
DBS Direct Downconverter

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MAX2114 数据手册

19-1814; Rev 0; 11/00

DBS Direct Downconverter

General Description

Features

The MAX2114 low-cost, direct-conversion tuner 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 MAX2114 directly

tunes L-band signals to baseband using a broadband

I/Q downconverter. The operating frequency range

spans 925MHz to 2175MHz.

ꢀ Complete Low-Cost Solution for DBS Direct

Downconversion

ꢀ High Level of Integration Minimizes Component

Count

ꢀ 1MBaud to 45MBaud Operation

ꢀ Selectable LO Buffer

The MAX2114 includes a low-noise amplifier (LNA) with

gain control, I and Q downconverting mixers, lowpass

filters with gain and frequency control, a local oscillator

(LO) buffer with a 90° quadrature network, and a

charge-pump-based phase-locked loop (PLL) for fre-

quency control. The MAX2114 has an on-chip LO,

requiring only an external varactor-tuned LC tank for

operation. The LO’s output drives the internal quadra-

ture generator and has a buffer amplifier to drive off-

chip circuitry. The MAX2114 comes in a 44-pin QFN

package with exposed paddle (EP).

ꢀ +5V Single-Supply Operation

ꢀ 925MHz to 2175MHz Input Frequency Range

ꢀ On-Chip Quadrature Generator, Dual-Modulus

Prescaler (/32, /33)

ꢀ On-Chip Crystal Oscillator Amplifier

ꢀ PLL Phase Detector with Gain-Controlled Charge

Pump

ꢀ Input Levels: -25dBm to -68dBm per Carrier

ꢀ Over 50dB Gain Control Range

Applications

U.S. DSS Set-Top Receivers Broadband Systems

ꢀ Noise Figure = 10.6dB; IIP3 = +10.7dBm

(at 1550MHz)

European DVB-Compliant

Systems

Cellular Base Stations

Wireless Local Loop

LMDS

Professional Receivers

VSAT

ꢀ Automatic Baseband Offset Correction

Microwave Links

Pin Configuration

Ordering Information

PART

TEMP. RANGE

PIN-PACKAGE

TOP VIEW

MAX2114UGH

*Exposed paddle

0°C to +85°C

44 QFN-EP*

33 PLLIN-

32 PLLIN+

31 MOD-

30 MOD+

29 IOUT+

28 IOUT-

CFLT

XTL-

XTL+

GND

MAX2114

RFIN+

RFIN-

GND

26 QOUT+

25 QOUT-

24 RFBAND

23 FLCLK

QDC- 10

QDC+ 11

Functional Diagram appears at end of data sheet.

QFN-EP

________________________________________________________________ Maxim Integrated Products

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7 8

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与MAX2114相关器件

型号	品牌	获取价格	描述	数据表
MAX2114UGH	ROCHESTER	获取价格	RF/MICROWAVE DOWN CONVERTER, QFN-44
MAX2114UGH-D	MAXIM	获取价格	Down Converter, QFN-44
MAX2114UGH-TD	MAXIM	获取价格	Down Converter, QFN-44
MAX2116	MAXIM	获取价格	Complete DBS Direct-Conversion Tuner ICs with Monolithic VCOs
MAX2116_V01	MAXIM	获取价格	Complete DBS Direct-Conversion Tuner ICs with Monolithic VCOs
MAX2116EVKIT	MAXIM	获取价格	MAX2116/MAX2118 Evaluation Kits
MAX2116UGL	MAXIM	获取价格	Down Converter, 6 MM X 6 MM, QFN-40
MAX2116UGL-T	MAXIM	获取价格	Down Converter, 6 MM X 6 MM, QFN-40
MAX2116UTL	MAXIM	获取价格	Complete DBS Direct-Conversion Tuner ICs with Monolithic VCOs
MAX2116UTL+	MAXIM	获取价格	暂无描述

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