CX74001

更新时间： 2024-09-27 03:15:07

品牌	Logo	应用领域
思佳讯 - SKYWORKS		电信集成电路蜂窝电话电路电信电路过程控制系统信息通信管理 PCS
页数	文件大小	规格书
23页	665K
描述
Rx ASIC for CDMA, AMPS, and PCS Applications

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技术参数
数据手册

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CX74001 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	QFN
包装说明：	QCCN,	针数：	48
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.48	Is Samacsys：	N
JESD-30 代码：	S-XQCC-N48	功能数量：	1
端子数量：	48	最高工作温度：	80 °C
最低工作温度：	-30 °C	封装主体材料：	UNSPECIFIED
封装代码：	QCCN	封装形状：	SQUARE
封装形式：	CHIP CARRIER	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	标称供电电压：	3 V
表面贴装：	YES	技术：	BICMOS
电信集成电路类型：	RF AND BASEBAND CIRCUIT	温度等级：	COMMERCIAL EXTENDED
端子形式：	NO LEAD	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	Base Number Matches：	1

CX74001 数据手册

CX74001

Rx ASIC for CDMA, AMPS, and PCS Applications

The CX74001 Application-Specific Integrated Circuit (ASIC) is a triple-mode, dual-

band receiver (Rx) intended for use in Code Division Multiple Access (CDMA)

portable phones in both cellular and Personal Communications System (PCS)

bands, as well as Advanced Mobile Phone System (AMPS) mode.

Distinguishing Features

• Supports single and dual-band, and tri-mode

handsets

• Battery cell operation (2.7 V < Vcc < 3.3 V)

• Dual Low Noise Amplifiers (800 MHz / 1900 MHz)

• PCS LNA With Bypass Feature

• Three-Step Cellular LNA Gain

• I/Q Interface

The device is a highly integrated super-heterodyne receiver. It incorporates all the

components required to implement the receiver chain, from the low-noise amplifier

(LNA) to the In-Phase and Quadrature (I/Q) demodulator stages, except for the

external Surface Acoustic Wave (SAW) filters and matching components. There

are two internal Low Noise Amplifiers (LNAs). The Cellular LNA has three-step gain

stages, and the PCS LNA gain has a bypass feature.

• Dual 200-600 MHz VHF Oscillators

• VCO On/Off control For Standby Current

Optimization

• CDMA Single IF Feature

After RF signal amplification and filtering, the received signal is mixed down from

RF to the Intermediate Frequency (IF). There are separate mixers for AMPS,

CDMA, and PCS bands. The CDMA cellular and PCS mixers have balanced

outputs for the IF SAW filters, while the AMPS differential output can be combined

externally to mate to a single-ended SAW filter. After IF filtering, the IF signal is

amplified by a Variable Gain Amplifier (VGA) and fed to an I/Q demodulator

resulting in baseband I/Q signals at the output.

• 48-pin, 7 x 7 mm RF Land Grid Array (RFLGA™)

package with down-set paddle.

Applications

• Cellular and PCS band phones

• CDMA and AMPS modes in the cellular band

• AMPS

• CDMA-US

The VGA has a minimum dynamic range of 90 dB with a control voltage range from

0.5 to 2.5 Volts, and it is common to all modes. There are two VHF oscillators

which operates with external tank circuits to provide Local Oscillator (LO)

frequencies for the I/Q demodulator in the cellular and PCS bands.

• CDMA-Japan

• CDMA mode in the PCS band

• PCS-US

• PCS-Korea

The noise figure, gain, and third order Input Intercept Point (IIP3) of each stage in

the receiver chip are optimized to meet the system requirements for AMPS and

CDMA modes as per TIA/EIA-98-C. Employing BiCMOS technology, the ASIC is

designed for low cost, high performance, and a high level of integration.

The device package and pinout are shown in Figure 1. A system block diagram of

the CX74001 is shown in Figure 2.

LNA_CTRL1

PCS_LNAIN

LNA_CTRL0

CELL_LNA_IN

VCC_RF_BIAS

CELL_LNA_EMIT

CELL/PCS

VCC_MIX

PCS_MIXER_OUT+

PCS_MIXER_OUT-

AMPS_MIX_OUT+

AMPS_MIX_OUT-

32 CDMA_MIX_OUT+

31 CDMA_MIX_OUT-

30 PCS_VGA_IN+

FM/CDMA

VCO_VCC

PCS_VGA_IN-

VCO_ON

28 AMPS_VGA_IN

27 CDMA_VGA_IN+

CELL_TANK-

CELL_TANK+

PCS_TANK-

CDMA_VGA_IN-

VCC_IF

CNXT061

Figure 1. CX74001 Rx ASIC Pin-Out (Top View)

Data Sheet

Skyworks

Doc. No. 101134A

Proprietary Information and Specifications are Subject to Change

March 5, 2002

12 3 4 5 6 7...23

中文翻译

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与CX74001相关器件

型号	品牌	获取价格	描述	数据表
CX74001-12	SKYWORKS	获取价格	RF and Baseband Circuit, BICMOS, 7 X 7 MM, LGA-48
CX74002	ETC	获取价格	Silicon Germanium CDMA Transmit/Dual PLL RFlC
CX74005	SKYWORKS	获取价格	VGA + I/Q Demodulator Rx ASIC for Portable Phone Applications
CX74016	SKYWORKS	获取价格	RF and Baseband Circuit, 10 X 10 MM, LGA-72
CX74017	SKYWORKS	获取价格	On the Direct Conversion Receiver
CX74036	CONEXANT	获取价格	IS-136 Receive RF IC for TDMA and AMPS Applications
CX74037	CONEXANT	获取价格	Transmit RF IC for TDMA or AMPS Applications
CX74038	SKYWORKS	获取价格	2.6 GHz/800 MHz Dual Fractional-N/lnteger-N Frequency Synthesizer
CX74038-12	SKYWORKS	获取价格	2.6 GHz/800 MHz Dual Fractional-N/lnteger-N Frequency Synthesizer
CX74038-71	SKYWORKS	获取价格	PLL Frequency Synthesizer, CQCC24, 4.50 X 3.50 MM, 1 MM HEIGHT, CSP-24

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