Datasheet > LMV221SD/NOPB

LMV221SD/NOPB

更新时间： 2024-11-22 11:09:31

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
48页	2490K
描述
用于 CDMA 和 WCDMA 的 50MHz 至 3.5GHz 40dB 对数功率检测器 \| NGF \| 6 \| -40 to 85

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LMV221

SNWS018D –DECEMBER 2006–REVISED JUNE 2016

LMV221 50-MHz to 3.5-GHz 40-dB Logarithmic Power Detector for CDMA and WCDMA

1 Features

3 Description

The LMV221 is a 40-dB RF power detector intended

for use in CDMA and WCDMA applications. The

device has an RF frequency range from 50 MHz to

3.5 GHz. It provides an accurate temperature and

supply-compensated output voltage that relates

linearly to the RF input power in dBm. The circuit

operates with a single supply from 2.7 V to 3.3 V.

•

2.7-V to 3.3-V Supply Voltage

40-dB Linear in dB Power Detection Range

0.3-V to 2-V Output Voltage Range

Shutdown

Multi-Band Operation from 50 MHz to 3.5 GHz

0.5-dB Accurate Temperature Compensation

External Configurable Output Filter Bandwidth

The LMV221 has an RF power detection range from

−45 dBm to −5 dBm and is ideally suited for direct

use in combination with a 30-dB directional coupler.

Additional low-pass filtering of the output signal can

be achieved by means of an external resistor and

capacitor. shows a detector with an additional output

low pass filter. The filter frequency is set with R_Sand

C_S.

2.5 mm × 2.2 mm × 0.8 mm 6-pin WSON

Package

2 Applications

•

UMTS/CDMA/WCDMA RF Power Control

GSM/GPRS RF Power Control

PA Modules

shows a detector with an additional feedback low

pass filter. Resistor R_Pis optional and lowers the

trans-impedance gain (R_TRANS). The filter frequency is

IEEE 802.11b, g (WLAN)

set with C_P//C_TRANSand R_P//R_TRANS

The device is active for Enable = High, otherwise it is

in a low power consumption shutdown mode. To save

power and prevent discharge of an external filter

capacitance, the output (OUT) is high-impedance

during shutdown.

Device Information⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LMV221

WSON (6)

2.50 mm × 2.20 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

space

Typical Application: Output RC Low Pass Filter

Typical Application: Feedback (R)C Low Pass Filter

COUPLER

ANTENNA

50 W

VDD

R_S

RFIN

OUT

RFIN

OUT

C_S

ADC

LMV221

R_P

C_P

ADC

LMV221

REF

GND

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...48

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LMV221SD/NOPB 替代型号

型号	品牌	替代类型	描述	数据表
LMV221SDX/NOPB	TI	完全替代	用于 CDMA 和 WCDMA 的 50MHz 至 3.5GHz 40dB 对数功率检测器

与LMV221SD/NOPB相关器件

型号	品牌	获取价格	描述	数据表
LMV221SDX	NSC	获取价格	50 MHz to 3.5 GHz 40 dB Logarithmic Power Detector for
LMV221SDX/NOPB	TI	获取价格	用于 CDMA 和 WCDMA 的 50MHz 至 3.5GHz 40dB 对数功率检测器
LMV225	NSC	获取价格	RF Power Detector for CDMA and WCDMA
LMV225	TI	获取价格	LMV225/LMV226/LMV228 RF Power Detector for CDMA and WCDMA
LMV225_14	TI	获取价格	RF Power Detector for CDMA and WCDMA
LMV225SD	TI	获取价格	LMV225/LMV226/LMV228 RF Power Detector for CDMA and WCDMA
LMV225SD	NSC	获取价格	RF Power Detector for CDMA and WCDMA
LMV225SD/NOPB	NSC	获取价格	IC TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, DSO6, 2.20 X 2.50 MM, 0.80 MM HEIGHT, LEAD
LMV225SD/NOPB	TI	获取价格	RF Power Detector for CDMA and WCDMA in micro SMD 6-WSON -40 to 85
LMV225SDX	NSC	获取价格	RF Power Detector for CDMA and WCDMA

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