lmh2110tmx National Semiconductor Corporation, lmh2110tmx Datasheet
lmh2110tmx
Manufacturer Part Number
lmh2110tmx
Description
8 Ghz Logarithmic Rms Power Detector With 45 Db Dynamic Range
Manufacturer
National Semiconductor Corporation
Datasheet
1.LMH2110TMX.pdf
(4 pages)
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© 2010 National Semiconductor Corporation
8 GHz Logarithmic RMS Power Detector with 45 dB
Dynamic Range
General Description
The LMH2110 is a 45 dB Logarithmic RMS power detector
particularly suited for accurate power measurement of mod-
ulated RF signals that exhibit large peak-to-average ratios,
i.e. large variations of the signal envelope. Such signals are
encountered in W-CDMA and LTE cell phones. The RMS
measurement topology inherently ensures a modulation in-
sensitive measurement.
The device has an RF frequency range from 50 MHz to 8 GHz.
It provides an accurate, temperature and supply insensitive,
output voltage that relates linearly to the RF input power in
dBm. The LMH2110's excellent conformance to a logarithmic
response enables an easy integration by using slope and in-
tercept only, reducing calibration effort significantly. The de-
vice operates with a single supply from 2.7V to 5V. The
LMH2110 has an RF power detection range from -40 dBm to
5 dBm and is ideally suited for use in combination with a di-
rectional coupler. Alternatively a resistive divider can be used
as well.
The device is active for EN = High, otherwise it is in a low
power consumption shutdown mode. To save power and pre-
vent discharge of an external filter capacitance, the output
(OUT) is high-impedance during shutdown.
The LMH2110 power detector is offered in a tiny 6-bump mi-
croSMD package.
“Notice: This document is not a datasheet. For more in-
formation regarding this product or to order samples
please contact your local National Semiconductor sales
office or visit http://www.national.com/support/dir.html.
Typical Application
300648
PRODUCT BRIEF
LMH2110
Features
■
■
■
■
■
■
■
■
■
■
Applications
■
■
Logarithmic root mean square response
45 dB linear-in-dB power detection range
Multi-band operation from 50 MHz to 8 GHz
LOG conformance better than ±0.5 dB
Highly temperature insensitive, ±0.25 dB
Modulation independent response, 0.08 dB
Minimal Slope and Intercept variation
Shutdown functionality
Wide supply range from 2.7V to 5V
Tiny 6-bump microSMD package
Multi Mode, Multi band RF power control
— GSM/EDGE
— CDMA/CDMA2000
— W-CDMA
— OFDMA
— LTE
Infrastructure RF Power Control
30064804
January 7, 2010
www.national.com
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lmh2110tmx Summary of contents
Page 1
... This document is not a datasheet. For more in- formation regarding this product or to order samples please contact your local National Semiconductor sales office or visit http://www.national.com/support/dir.html. Typical Application © 2010 National Semiconductor Corporation LMH2110 PRODUCT BRIEF Features ■ Logarithmic root mean square response ■ ...
Page 2
... Output A2 OUT Ordering Information Package Part Number LMH2110TM 6–Bump microSMD LMH2110TMX www.national.com 6-Bump mircoSMD 30064805 Top View Positive Supply Voltage. Power Ground. Power Ground. May be left floating in case grounding is not feasible. The device is enabled for EN = High, and in shutdown mode for EN = Low. EN should be < ...
Page 3
Physical Dimensions inches (millimeters) unless otherwise noted X1 = 0.840 ± 0.030 mm 1.240 ± 0.030 mm 0.600 ± 0.075 mm 6-Bump microSMD NS Package Number TMD06BBA 3 www.national.com ...
Page 4
... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...