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CX42053

700 鈥?1000 MHz High Dynamic Range, Diversity Receiver Front End

Skyworks鈥?CX42053 is an integrated, high-dynamic range, low-noise receiver down

converter for two-channel diversity systems. It includes a Low Noise Amplifier

(LNA) followed by a double-balanced active mixer. The CX42053 has dual Local

Oscillator (LO) inputs, selected using an external switch interface. The internal

attenuator is integrated with the LNA. The attenuator function is also controlled

using an externally controlled CMOS-compatible interface.

Figure 1 shows a functional block diagram for the CX42053. The 24-pin Plastic

Quad Flat Pack (PQFP) device package and pinout are shown in Figure 2.

Distinguishing Features

鈥?/div>

High 3

rd

Order Input Intercept Point (IIP3) mixer

and LNA

鈥?/div>

Wideband RF input frequency range

(700 to 1000 MHz)

鈥?/div>

Single or two-channel applications

鈥?/div>

Use with LNA-mixer cascaded or mixer-only

鈥?/div>

Bias-selectable LNA/mixer functions

鈥?/div>

Integrated solid state attenuator

鈥?/div>

CMOS-compatible control interfaces

鈥?鹵5

V supply operation

鈥?/div>

鈥?0

擄C

to +85

擄C

operating range

鈥?/div>

Supports frequency hopping applications

Applications

鈥?/div>

Cellular and GSM communications

Mobile radio systems

Paging

Industrial, Scientific, Medical (ISM) band

Applications

IR FILTER

RF

Balun

LNA_INA

L_GNDA

IF A

RF A

LNA

Attenuator

24

GND

1

23

22

21

20

19

18

IFNA

ATTN CONTROL

LO 1

LO 2

LO SELECT

Attenuator

Amp

LO_1

2

17

IFPA

ATTN

3

16

LO_GND

IF B

RF B

LNA

LO_SEL

4

15

VDD

LO_2

5

14

IFPB

6

13

7

8

9

10

11

12

IFNB

VSS

RF

Balun

IR FILTER

LNA_INB

L_GNDB

L_OUTB

M_INPB

C1249

M_INNB

MGNDB

M_INNA

L_OUTA

MGNDA

M_INPA

Figure 1. CX42053 Functional Block Diagram

C1250

Figure 2. CX42053 Pinout 鈥?24-Pin PQFP Package

Data Sheet

Skyworks

Proprietary Information and Specifications Are Subject to Change

Doc. No. 101431B

March 12, 2002

型號

版本

描述

廠商

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CX42053

英文版

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CX42053 Datasheet

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