Specification	LMV221SDX/NOPB

Accuracy	0.5 dB
Current - Supply	10 mA
Frequency [Max]	3.5 GHz
Frequency [Min]	50 MHz
Input Range [Max]	5 dBm
Input Range [Min]	-45 dBm
Mounting Type	Surface Mount
RF Type	GPRS, EDGE, W-CDMA, TDMA, GSM, Cellular, CDMA2000, CDMA
Supplier Device Package	6-WSON (2.2x2.5)
Voltage - Supply [Max]	3.3 V
Voltage - Supply [Min]	2.7 V

LMV221 Series

Part	Current - Supply	Frequency [Max]	Frequency [Min]	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Input Range [Max]	Input Range [Min]	Accuracy	RF Type	For Use With/Related Products	Supplied Contents
Texas Instruments LMV221SDX/NOPB	10 mA	3.5 GHz	50 MHz	Surface Mount	2.7 V	3.3 V	6-WSON (2.2x2.5)	5 dBm	-45 dBm	0.5 dB	CDMA CDMA2000 Cellular EDGE GPRS GSM TDMA W-CDMA
Texas Instruments LMV221EVAL/NOPB		3.5 GHz	50 MHz									LMV221	Board(s)
Texas Instruments LMV221SD/NOPB	10 mA	3.5 GHz	50 MHz	Surface Mount	2.7 V	3.3 V	6-WSON (2.2x2.5)	5 dBm	-45 dBm	0.5 dB	CDMA CDMA2000 Cellular EDGE GPRS GSM TDMA W-CDMA
Texas Instruments LMV221EVAL		3.5 GHz	50 MHz									LMV221	Board(s)

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	4500	$ 1.75
Texas Instruments	LARGE T&R	1	$ 2.63
		100	$ 2.30
		250	$ 1.61
		1000	$ 1.30

Description

General part information

LMV221 Series

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.

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 RSand CS.

shows a detector with an additional feedback low pass filter. Resistor RPis optional and lowers the trans-impedance gain (RTRANS). The filter frequency is set with CP//CTRANSand RP//RTRANS.

Documents

Technical documentation and resources

Power Management Guide 2018 (Rev. R)

Selection guide

LMV221EVM EU Declaration of Conformity (DoC)

Certificate

LMV221 50-MHz to 3.5-GHz 40-dB Logarithmic Power Detector for CDMA and WCDMA datasheet (Rev. D)

Data sheet

Evaluation Board for the LMV221 Logarithmic Power Detector (Rev. A)

User guide