CX74005

更新时间： 2024-02-26 06:12:45

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移动电话
页数	文件大小	规格书
14页	350K
描述
VGA + I/Q Demodulator Rx ASIC for Portable Phone Applications

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CX74005 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
零件包装代码：	LGA	包装说明：	QCCN, LCC32,.2SQ,20
针数：	32	Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01	风险等级：	5.48
JESD-30 代码：	S-XQCC-N32	JESD-609代码：	e0
长度：	5 mm	功能数量：	1
端子数量：	32	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	封装等效代码：	LCC32,.2SQ,20
封装形状：	SQUARE	封装形式：	CHIP CARRIER
电源：	3.3 V	认证状态：	Not Qualified
座面最大高度：	1.3 mm	子类别：	Other Telecom ICs
标称供电电压：	3 V	表面贴装：	YES
技术：	BIPOLAR	电信集成电路类型：	RF AND BASEBAND CIRCUIT
温度等级：	COMMERCIAL EXTENDED	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD	宽度：	5 mm
Base Number Matches：	1

CX74005 数据手册

CX74005

VGA + I/Q Demodulator Rx ASIC for Portable Phone Applications

The CX74005 Application-Specific Integrated Circuit (ASIC) is a Variable Gain

Amplifier (VGA) and I/Q demodulator, intended for use in Code Division Multiple

Access (CDMA) portable phones in both cellular and Personal Communications

System (PCS) bands. As a trimode IC, it can be used in CDMA mode or Advanced

Mobile Phone System (AMPS) mode.

Features

• Supports CDMA/AMPS/PCS1900 modes

• Three battery cell operation

(2.7 V < VCC < 3.3 V).

• IF inputs and I/Q outputs

• On-chip 100 to 640 MHz oscillators

• Low power operation: <25 mA

• 32-pin Land Grid Array (LGA) 5 x 5 mm package

The device incorporates a VGA and the In-Phase and Quadrature (I/Q)

demodulator stages. The intermediate frequencies (IF) are combined through

separate buffers at the input of the VGA depending on the selected mode. The

VGA has a gain control range greater than 90 dB.

Applications

There are two Very High Frequency (VHF) oscillators that operate with external

tank circuits. They provide signals to the Local Oscillator (LO) for the I/Q

demodulator in the cellular and PCS bands.

• Tri-mode handsets

• CDMA and AMPS modes in the cellular band:

− AMPS

− CDMA-US

− CDMA-Japan

• CDMA mode in the PCS band:

− PCS-US

− PCS-Korea

The noise figure, gain, and third order Input Intercept Point (IIP3) of the CX74005

are optimized to meet the system requirements for AMPS and CDMA modes as per

TIA/EIA-98-B, ANSI J-STD-018 (PCS), CDMA2000. Employing silicon bipolar

technology, the ASIC is designed for high performance, a high level of integration

and low cost.

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

CX74005 is shown in Figure 2.

GND

FM/CDMA

VGA_AMPS

CELL/PCS

VCO_VCC

VGA_PCS_IN+

VCO_GND

VGA_PCS_IN-

CELL_TANK1-

VGA_CDMA_IN+

CELL_TANK1+

VGA_CDMA_IN-

IF_VCC

PCS_TANK-

VGA_GC

CNXT044

Figure 1. Rx ASIC Pinout – 32-Pin LGA Package

(Top View)

Data Sheet

Conexant - Preliminary

Proprietary Information and Specifications Are Subject to Change

Doc. No. 101252A

March 13, 2001

12 3 4 5 6 7...14

中文翻译

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与CX74005相关器件

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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
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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
CX74040	ETC	获取价格	Transmitter for WCDMA and UMTS Applications\|Handset RF ICs:WCDMA
CX74041	ETC	获取价格	CX74041 Receiver for WCDMA. UMTS. and PCS\|Handset RF ICs:WCDMA
CX74059	ETC	获取价格	CX74059 Receiver for CDMA. AMPS. and PCS\|Handset RF ICs:CDMA / CDMA2000

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